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Peer-reviewed Research Articles and Reviews

Bettenworth V, van Vliet S, Turkowyd B, Bamberger A, Wendt H, McIntosh M, Steinchen W, Endesfelder U, Becker A (2022) Frequency modulation of a bacterial quorum sensing response. Nat commun.

Stecker D, Hoffmann T, Link H, Commichau FM, Bremer E (2022) L-proline synthesis mutants of Bacillus subtilis overcome osmotic sensitivity by genetically adapting L-arginine metabolism. Front. Microbiol. Frontiers in Microbiology. doi: 10.3389

Bremer E, Hoffmann T, Dempwolff F, Bedrunka P, Bange G (2022) The many faces of the unusual biofilm activator RemA. BioEssays doi:10.1002/bies.202200009. Review

Michel AM, Borrero-de Acuna J, Molinari G, Ünal CM, Will S, Derksen E, Barthels S, Bartram W, Schrader M, Rohde M, Zhang H, Hoffmann T, Neumann-Schaal M, Bremer E, Jahn D (2022) Cellular adaptation of Clostridioides difficile to high salinity encompasses a compatible solute-responsive change in cell morphology. Environmental Microbiology 24 (3) 1499-1517

Kuzmich S, Blumenkamp P, Meier D, Szadkowski D, Goesmann A, Becker A, Søgaard-Andersen L (2022) The CRP-like transcriptional regulator MrpC curbs c-di-GMP and 3’, 3’ cGAMP nucleotide levels during development in Myxococcus xanthus. mBio 13: e00044-22.

Tamara Hoffmann, Devid Mrusek, Patricia Bedrunka, Fabiana Burchert, Christopher-Nils Mais, Daniel B. Kearns, Florian Altegoer, Erhard Bremer & Gert Bange (2021) Structural and functional characterization of the bacterial biofilm activator RemA. Nat Commun. 2021; 12: 5707

Williams MA, Aliashkevich A, Krol E, Kuru E, Bouchier J, Rittichier J, Brun Y, VanNieuwenhze M, Becker A, Cava F, Brown PJB (2021) Unipolar peptidoglycan synthesis in the Rhizobiales requires an essential class A penicillin-binding protein. mBio 12: e0234621

Pérez-Giménez J, Iturralde E, Torres Tejerizo G, Quelas J, Krol E, Borassi C, Becker A, Estévez J, Lodeiro A (2021) A stringent response-defective Bradyrhizobium diazoefficiens does not activate the type-3-secretion system, elicits early plant defense, and circumvents NH4NO3-induced inhibition of nodulation. Appl Environ Microbiol 87: e02989-20.

Albicoro FJ, Draghi WO, Martini MC, Salas ME, Tejerizo GAT, Lozano MJ, López JL, Vacca C, Cafiero JH, Pistorio M, Bednarz H, Meier D, Lagares A, Niehaus K, Becker A, Papa MFD (2021) The Two-Component System ActJK is involved in acid stress tolerance and symbiosis in Sinorhizobium meliloti. J Biotechnol 329: 80-91.

Casas-Pastor D, Müller RR, Jaenicke S, Brinkrolf K, Becker A, Buttner MJ, Gross CA, Mascher T, Goesmann A, Fritz G (2021) Expansion and re-classification of the extracytoplasmic function (ECF) σ factor family. Nucl Acids Res 49:986-1005.

Krol E, Stuckenschneider L, Kästle Silva JM, Graumann PL, Becker A. (2021) Stable inheritance of Sinorhizobium meliloti cell growth polarity requires an FtsN-like protein and an amidase. Nat Commun. 12(1):545.

Korfhage N, Mühling M, Ringshandl S, Becker A, Schmeck B, Freisleben B (2020) Detection and segmentation of morphologically complex eukaryotic cells in fluorescence microscopy images via Feature Pyramid Fusion. PLoS Comput Biol 16: e1008179.

Krol E, Schäper S, Becker A (2020) Cyclic di-GMP signaling controlling the free-living lifestyle of alpha-proteobacterial rhizobia. Biol Chem 401: 1335-1348. Review

Krol E, Yau H.C.L., Lechner M, Schäper S, Bange G, Vollmer W, Becker A (2020) Tol-Pal System and Rgs Proteins Interact to Promote Unipolar Growth and Cell Division in Sinorhizobium meliloti. mBio 11:e00306-20

Schwarz M, Welzel M, Kabdullayeva T, Becker A, Freisleben B, Heider D. (2020) MESA: automated assessment of synthetic DNA fragments and simulation of DNA synthesis, storage, sequencing, and PCR errors. Bioinformatics 36: 3322-3326

Meier D, Casas-Pastor D, Fritz G, Becker A (2020) Gene regulation by extracytoplasmic function (ECF) σ factors in alpha-rhizobia. Advances in Botanical Research, Vol. 94

Carillo M, Wagner M, Petit F, Dransfeld A, Becker A, Erb T (2019) Design and control of extrachromosomal elements in Methylorubrum extorquens AM1. ACS Synth Biol 8: 2451-2456.

Jung A, Raßbach A, Pulpetta RI, van Teeseling MCF, Heinrich K, Sobetzko P, Serrania J, Becker A, Thanbichler M (2019) Two-step chromosome segregation in the stalked budding bacterium Hyphomonas neptunium. Nat Comm 10:3290 .

An SQ, Potnis N, Dow M, Vorhölter FJ, He YQ, Becker A, Teper D, Li Y, Wang N, Bleris L, Tang JL (2019) Mechanistic insights into host adaptation, virulence and epidemiology of the phytopathogen Xanthomonas. FEMS Microbiol Rev pii: fuz024. Review

Bettenworth V, Steinfeld B, Duin H, Petersen K, Streit WR, Bischofs I, Becker A (2019) Phenotypic Heterogeneity in Bacterial Quorum Sensing Systems. J Mol Biol 431:4530-4546 Review

Kindinger F, Nies J, Becker A, Zhu T, Li S-Mi (2019) Genomic locus of a Penicillium crustosum pigment as integration site for secondary metabolite gene expression. ACS Chem Biol 14: 1227-1234.

López JL, Lozano MJ, Lagares A (Jr), Fabre ML, Draghi WO, Del Papa MF, Pistorio M, Becker A, Wibberg D, Schlüter A, Pühler A, Blom J, Goesmann A, and Lagares A (2019) Codon usage heterogeneity in the multipartite prokaryote genome: Selection-based coding bias associated to gene location, expression level, and ancestry. mBio 10: e00505-19.

Schäper S, Wendt H, Bamberger J, Sieber V, Schmid J, Becker A (2019) A bifunctional UDP-sugar 4-epimerase supports biosynthesis of multiple cell surface polysaccharides in Sinorhizobium meliloti. J Bacteriol 201: e00801-18.

Schäper S, Yau H, Krol E, Skotnicka D, Heimerl T, Gray J, Kaever V, Søgaard-Andersen L, Vollmer W, Becker A (2018) Seven-transmembrane receptor protein RgsP and cell wall-binding protein RgsM promote unipolar growth in Rhizobiales. PLOS Genetics 14: e1007594.

Bettenworth V, McIntosh M, Becker A, Eckhardt B (2018) Front-propagation in bacterial inter-colony communication. Chaos 28: 106316.

Checcucci A, diCenzo GC, Ghini V, Bazzicalupo M, Becker A, Decorosi F, Döhlemann J, Fagorzi C, Finan TM, Fondi M, Luchinat C, Turano P, Vignolini T, Viti C, Mengoni A (2018) Creation and Characterization of a Genomically Hybrid Strain in the Nitrogen-Fixing Symbiotic Bacterium Sinorhizobium meliloti. ACS Synth Biol 7: 2365-2378.

Brenzinger S, Pecina A, Mrusek D, Mann P, Völse K, Wimmi S, Ruppert U, Becker A, Ringgaard S, Bange G, Thormann KM (2018) ZomB is essential for flagellar motor reversals in Shewanella putrefaciens and Vibrio parahaemolyticus. Mol Microbiol 109: 694-709.

Ludueña LM, Anzuay MS, Angelini JG, McIntosh M, Becker A, Rupp O, Goesmann A, Blom J, Fabra A, Taurian T (2018) Genome sequence of the endophytic strain Enterobacter sp. J49, a potential biofertilizer for peanut and maize. Genomics 111: 913-920.

Luduena LM, Anzuay MS, Angelini JG, McIntosh M, Becker A, Rupp O, Goesmann A, Blom J, Fabra A, Taurian T (2018) Strain Serratia sp S119: A potential biofertilizer for peanut and maize and a model bacterium to study phosphate solubilization mechanisms. Appl Soil Ecol 126:107-112.

Robledo M, Schlüter JP, Loehr LO, Linne U, Albaum S, Jiménez-Zurdo JI, Becker A (2018) An sRNA and cold shock protein homolog-based feedforward loop post-transcriptionally controls cell cycle master regulator CtrA. Front Microbiol 9:763.

Hattab G, Wiesmann V, Becker A, Munzer T, Nattkemper TW (2018) A novel methodology for characterizing cell sub-populations in automated time-lapse microscopy. Front Bioeng Biotechnol 6: 17.

Jofré E, Liaudat JP, Medeot D, Becker A (2017) Monitoring succinoglycan production in single Sinorhizobium meliloti cells by Calcofluor white M2R staining and time-lapse microscopy. Carbohydr Polym 181:918-922.

Schäper S, Steinchen W, Krol E, Altegoer F, Skotnicka D, Søgaard-Andersen L, Bange G, Becker A (2017) AraC-like transcriptional activator CuxR binds c‑di‑GMP by a PilZ-like mechanism to regulate extracellular polysaccharide production. Proc Natl Acad Sci USA 114: E4822-E4831.

Salas ME, Lozano MJ, Lopez JL, Draghi W, Serrania J, Torres Tejerizo GA, Albicoro FJ, Nilsson JF, Pistorio M, del Papa MF, Parisi G, Becker A, Lagares A (2017) Specificity traits consistent with legume-rhizobia coevolution displayed by Sinorhizobium meliloti rhizosphere colonization. Environ Microbiol 19: 3423-3438.

Hattab G, Schlüter J-P, Becker A, Nattkemper TW (2017) ViCAR: An adaptive and landmark-free registration of time lapse image data from microfluidics experiments. Frontiers in Genetics 8: 69.

Döhlemann J, Wagner M, Happel C, Carrillo M, Sobetzko P, Erb TJ, Thanbichler M, Becker A (2017) A family of single copy repABC-type shuttle vectors stably maintained in the alpha-proteobacterium Sinorhizobium meliloti. ACS Synth Biol 6: 968-984.

Robledo M, Peregrina A, Millán V, García-Tomsig NI, Torres-Quesada O, Mateos PF, Becker A, Jiménez-Zurdo JI (2017) A conserved α-proteobacterial small RNA contributes to osmoadaptation and symbiotic efficiency of rhizobia on legume roots. Environ Microbiol 19: 2661-2680.

Ampattu BJ, Hagmann L, Liang C, Dittrich M, Schlüter A, Blom J, Krol E, Goesmann A, Becker A, Dandekar T, Müller T, Schoen C (2017) Transcriptomic buffering of cryptic genetic variation contributes to meningococcal virulence. BMC Genomics 18: 282.

Serrania J, Johner T, Rupp O, Goesmann A, Becker A (2017) Massive parallel insertion site sequencing of an arrayed Sinorhizobium meliloti signature-tagged mini-Tn5 transposon mutant library. J Biotechnol: pii: S0168-1656(17)30082-2.

Lagares A (Jr.) Borella GC, Linne U, Becker A, Valverde C (2017) Regulation of polyhydroxybutyrate accumulation in Sinorhizobium meliloti by the 1 trans-encoded small RNA MmgR. J Bacteriol 199: pii: e00776-16.

Baumgardt K, Melior H, Madhugiri R, Thalmann S, Schikora A, McIntosh M, Becker A, Evguenieva-Hackenberg E (2017) RNase E and RNase J are needed for S‑adenosylmethionine homeostasis in Sinorhizobium meliloti. Microbiology SGM 163: 570-583.

Saramago M, Peregrina A, Robledo M, Matos RG, Hilker R, Serrania J, Becker A, Arraiano CM, Jiménez-Zurdo JI (2017) Sinorhizobium meliloti YbeY is an endoribonuclease with unprecedented catalytic features, acting as silencing enzyme in riboregulation. Nucl Acids Res 45: 1371-1391.

Fan B, Li YL, Mariappan A, Becker A, Wu XQ, Borriss R (2016) New SigD-regulated genes identified in the rhizobacterium Bacillus amyloliquefaciens FZB42. Biol Open 5: 1776-1783.

Krol E, Klaner C, Gnau P, Kaever V, Essen LO, Becker A (2016) Cyclic mononucleotide- and Clr-dependent gene regulation in Sinorhizobium meliloti. Microbiology SGM 162: 1840-1856.

Döhlemann J, Brennecke M, Becker A (2016) Cloning-free genome engineering in Sinorhizobium meliloti advances applications of Cre/loxP site-specific recombination 233: 1. J Biotechnol 60-170.

Lacanna E, Bigosch C, Kaever V, Boehm A, Becker A (2016) Evidence for Escherichia coli diguanylate cyclase DgcZ interlinking surface sensing and adhesion via multiple regulatory routes. J Bacteriol 198: 2524-2535.

Babski J, Haas KA, Näther-Schindler D, Pfeiffer F, Förstner KU, Hammelmann M, Hilker R, Becker A, Sharma C, Marchfelder A, Soppa J (2016) Genome-wide identification of transcriptional start sites in the haloarchaeon Haloferax volcanii based on differential RNA-Seq (dRNA-Seq). BMC Genomics 17: 629.

Frage B, Döhlemann J, Robledo M, Lucena D, Sobetzko P, Graumann PL, Becker A (2016) Spatiotemporal choreography of chromosome and megaplasmids in the Sinorhizobium meliloti cell cycle. Mol Microbiol 100:808-823.

Penttinen P, Greco D, Muntyan V, Terefework Z, De Lajudie P, Roumiantseva M, Becker A, Auvinen P, Lindström K (2016) Divergent genes in potential inoculant Sinorhizobium strains are related to DNA replication, recombination and repair. Journal of Basic Microbiology 56:680-685.

Medeot DB, Rivero MR, Cendoya E, Contreras-Moreira B, Rossi FA, Fischer SE, Becker A, Jofré E (2016) Sinorhizobium meliloti low molecular weight phosphotyrosine phosphatase SMc02309 modifies activity of the UDP-glucose pyrophosphorylase ExoN involved in succinoglycan biosynthesis. Microbiology SGM 162: 552-563.

Schäper S, Krol E, Skotnicka D, Kaever V, Hilker R, Søgaard-Andersen L, Becker A (2016) Cyclic di-GMP regulates multiple cellular functions in the symbiotic α‑proteobacterium Sinorhizobium meliloti. J Bacteriol 198: 521-535.

Robledo M, Jiménez-Zurdo JI, Becker A (2016) Antisense transcription of symbiotic genes in Sinorhizobium meliloti. Symbiosis 67: 55.

Robledo M, Frage B, Wright PR, Becker A (2015) A stress-induced small RNA modulates alpha-rhizobial cell cycle progression. PLoS Genetics 11: e1005153.

Maier L-K, Benz J, Fischer S, Allstetter M, Jaschinski K, Hilker R, Becker A, Allers T, Soppa J, Marchfelder A (2015) Deletion of the Sm1 encoding motif in the lsm gene result in distinct changes in the transcriptome and enhanced swarming activity of Haloferax cells. Biochimie 117:129-137.

Vinardell J-M, Acosta-Jurado S, Zehner S, Göttfert M, Becker A, Baena I, Blom J, Crespo-Rivas JC, Goesmann A, Jaenicke S, Krol E, McIntosh M, Margaret I, Pérez-Montaño F, Schneiker-Bekel S, Serrania J, Szczepanowski R, Buendía AM, Lloret J, Bonilla I, Pühler A, Ruiz-Sainz J-E, Weidner S (2015). The Sinorhizobium fredii HH103 genome: a comparative analysis with S. fredii strains differing in their symbiotic behaviour with soybean. Mol Plant Microbe Interact 28: 811-824.

Schlüter J-P, Czuppon P, Schauer O, Pfaffelhuber P, McIntosh M,
Becker A (2015) Classification of phenotypic subpopulations in isogenic bacterial cultures by triple promoter probing at single cell level. J Biotechnol 198: 3-14.

Becker A (2015) Challenges and perspectives in combinatorial assembly of novel exopolysaccharide biosynthesis pathways. In: Schmid J (ed.), Microbiotechnology: Ecotoxicology and Bioremediation. Front. Microbiol 6: 687. Review

Charoenpanich P, Soto MJ, Becker A, McIntosh M (2015) Quorum sensing restrains growth and is rapidly inactivated during domestication of Sinorhizobium meliloti. Environ Microbiol Rep 7: 373-382.

Krol E, Becker A (2014) Rhizobial homologs of long-chain fatty acid transporter FadL facilitate perception of long chain N-acyl-homoserine lactone signals. Proc Natl Acad Sci USA 111: 10702-10707.

Dugé de Bernonville T, Noël LD, SanCristobal M, Danoun S, Becker A, Soreau P, Arlat M, Lauber E (2014) Transcriptional reprogramming and phenotypical changes associated with growth of Xanthomonas campestris pv. campestris in cabbage xylem sap. Microbiology 89: 527-541.

Torres-Quesada O, Reinkensmeier J, Schlüter J-P, Robledo M, Peregrina A, Giegerich R, Toro N, Becker A, Jiménez-Zurdo JI (2014) Genome-wide profiling of Hfq-binding RNAs uncovers extensive post-transcriptional rewiring of major stress response and symbiotic regulons in Sinorhizobium meliloti. RNA Biol 11: 563-579.

Baumgardt K, Charoenpanich P, McIntosh M, Schikora A, Stein E, Thalmann S, Kogel K-H, Klug G, Becker A, Evguenieva-Hackenberg E (2014) RNase E affects the expression of the acyl-homoserine lactone synthase gene sinI in Sinorhizobium meliloti. J Bacteriol 196:1435-1447.

Becker A, Overlöper A, Schlüter J-P, Reinkensmeier R, Robledo M, Giegerich R, Narberhaus F, Evguenieva-Hackenberg E (2014) Riboregulation in plant-associated alpha-proteobacteria. RNA Biol 11: 550-562. Review

McIntosh M, Czuppon P, Best K, Becker A, Pfaffelhuber P (2013) Modeling quorum sensing in Sinorhizobium meliloti. International Journal of Biomathematics and Biostatistics 2(1):59-74.

Schmidtke C, Abendroth U, Brock J, Serrania J, Becker A, Bonas U (2013) Small RNA sX13: a multifaceted virulence factor of the plant pathogen Xanthomonas. PLOS Pathogens 9: e1003626.

Pini F, Frage B, Ferri L, De Nisco NJ, Moapatra S, Taddei L, Firoavanti A, Dewitte F, Galardini M, Brilli M, Villeret V, Bazzicalupo M, Mengoni A, Walker GC, Becker A, Biondi EG (2013) The essential DivJ/CbrA kinase and PleC phosphatase system controls DivK phosphorylation and symbiosis in Sinorhizobium meliloti. Mol Microbiol 90: 54-71.

Carvalhais LC, Dennis PG, Fan B, Fedoseyenko D, Kierul K, Becker A, von Wiren N, Borriss R (2013) Linking plant nutritional status to plant-microbe interactions. PLoS One 8: e68555.

Charoenpanich P, Meyer S, Becker A, McIntosh M (2013) Temporal expression program of quorum sensing-based transcription regulation in Sinorhizobium meliloti. J Bacteriol 195: 3224-3236.

Schlüter JP, Reinkensmeier J, Barnett MJ, Lang C, Krol E, Giegerich R, Long SR, Becker A (2013) Global mapping of transcription start sites and promoter motifs in the symbiotic α-proteobacterium Sinorhizobium meliloti 1021. BMC Genomics 14: 156.

Weidner S, Baumgarth B, Göttfert M, Jaenicke S, Pühler A, Schneiker-Bekel S, Serrania J, Szczepanowski R, Becker A (2013) Genome Sequence of Sinorhizobium meliloti Rm41. GenomeA 1: e00013-12.

Jiménez-Zurdo JI, Valverde C, Becker A (2013) Insights into the non-coding RNome of nitrogen-fixing endosymbiotic α-proteobacteria. Mol Plant Microbe Interact 26: 160-167. Review

Becker A, Pobigaylo N (2013) Construction of signature-tagged mutant libraries and its application to plant-symbiotic bacteria. In: de Bruijn F (ed.). Molecular Microbial Ecology of the Rhizosphere. Chapter 86, pp. 921-928. Wiley/Blackwell. Review

Sobrero P, Schlüter JP, Lanner U, Schlosser A, Becker A, Valverde C (2012) Quantitative proteomic analysis of the Hfq-regulon in Sinorhizobium meliloti 2011. PLoS One 7: e48494.

Shidore T, Dinse T, Öhrlein J, Becker A, Reinhold-Hurek B (2012) Transcriptomic analysis of responses to exudates reveal genes required for rhizosphere competence of the endophyte Azoarcus sp. strain BH72. Environ Microbiol 14: 2775-2787.

Fan B, Carvalhais LC, Becker A, Fedoseyenko D, von Wirén N, Borriss R (2012) Transcriptomic profiling of Bacillus amyloliquefaciens FZB42 in response to maize root exudates. BMC Microbiol 12: 116.

Flügel M, Becker A, Gartemann K-H, Eichenlaub R (2012) Analysis of the interaction of Clavibacter michiganensis subsp. michiganensis with its host plant tomato by genome-wide expression profiling. J Biotechnol 160: 42-54.

Agrawal-Singh S, Isken F, Agelopoulos K, Klein HU, Thoennissen NH, Koehler G, Hascher A, Bäumer N, Berdel WE, Thiede C, Ehninger G, Becker A, Schlenke P, Wang Y, McClelland M, Krug U, Koschmieder S, Büchner T, Yu DY, Singh SV, Hansen K, Serve H, Dugas M, Müller-Tidow C (2012) Genome-wide analysis of histone H3 acetylation patterns in AML identifies PRDX2 as an epigenetically silenced tumor suppressor gene. Blood 119: 2346-2357.

Weidner S, Becker A, Bonilla I, Jaenicke S, Lloret J, Margaret I, Pühler A, Ruiz-Sainz JE, Schneiker-Bekel S, Szczepanowski R, Vinardell JM, Zehner S, Göttfert M (2012) Genome sequence of the soybean symbiont Sinorhizobium fredii HH103. J Bacteriol 194: 1617.

Hauberg-Lotte L, Scharf C, Völker U, Becker A, Reinhold-Hurek B (2012) Characterization of population-density regulated gene and protein expression of the grass endophyte Azoarcus sp. BH72. PLoS ONE 7(1): e30421.

Reinkensmeier J, Schlüter J-P, Giegerich R, Becker A (2011) Conservation and occurrence of trans-encoded sRNAs in the Rhizobiales. Genes 2(4): 925-956.

Schatschneider S, Vorhölter FJ, Rückert C, Becker A, Eisenreich W, Pühler A, Niehaus K (2011) Genome-enabled determination of amino acid biosynthesis in Xanthomonas campestris pv. campestris and identification of biosynthetic pathways for alanine, glycine, and isoleucine by 13C isotopologue profiling. Mol Genet Genomics 286:247-259.

Mayer L, Tondo Vendruscolo C, Padilha da Silva W, Vorhölter F-J, Becker A, Pühler A (2011) Insights into the genome of the phytopathogen Xanthomonas arboricola pv. pruni 109 by comparative genomic hybridization. J Biotechnol 155: 40-49.

Krol E, Becker A (2011) ppGpp in Sinorhizobium meliloti: biosynthesis in response to sudden nutritional downshifts and modulation of the transcriptome. Mol Microbiol 81: 1233–1254.

Joseph B, Schwarz RF, Linke B, Blom J, Becker A, Claus H, Goesmann A, Frosch M, Müller T, Vogel U, Schoen C (2011) Virulence Evolution of the Human Pathogen Neisseria meningitidis by Recombination in the Core and Accessory Genome. PLoS ONE 6(4): e18441.

Sabirova J, Becker A, Lünsdorf H, Nicaud L-M, Timmis KN, Golyshin PN (2011) Trancsriptional profiling of the marine oil-1 degrading bacterium Alcanivorax borkumensis during growth on n-alkanes. FEMS Microbiol Lett 319: 160-168.

Venkatesh AG, Herth S, Becker A, Reiss G (2011) Orientation-defined alignment and immobilization of DNA between specific surfaces. Nanotechnology 22: 145301.

Tickenbrock L, Klein H-U, Trento C, Hascher A, Göllner S, Bäumer N, Kuss R, Agrawal S, Bug G, Serve H, Thiede C, Ehninger G, zur Stadt U, McClelland M, Wang Y, Becker A, Koschmieder S, Berdel WE, Dugas M, Müller-Tidow C (2011) Increased HDAC1 deposition at hematopoietic promoters in AML and its association with patient survival. Leuk Res 35: 620-625.

Martin CW, Tauchen A, Becker A, Nattkemper TW (2011) A Normalized Tree Index for identification of correlated clinical parameters in microarray experiments. Journal of Biomedical Informatics 4: 2.

Krol E, Blom J, Winnebald J, Berhörster A, Barnett MJ, Capela D, Goesmann A, Baumbach J, Becker A (2011) RhizoRegNet – a database of rhizobial transcription factors and regulatory networks. J Biotechnol 140(1-2): 45-50.

Borriss R, Chen XH, Rueckert C, Blom J, Becker A, Baumgarth B, Fan B, Pukall R, Schumann P, Spröer C, Junge H, Vater J, Pühler A, Klenk H-P (2011) Relationship of Bacillus amyloliquefaciens clades associated 1 with strains DSM 7T and FZB42: a proposal for Bacillus amyloliquefaciens subsp. amyloliquefaciens subsp. nov. and Bacillus amyloliquefaciens subsp. plantarum subsp. nov. based on their discriminating complete genome sequences. Int J Syst Evol Microbiol 61:1786-1801.

Margaret I, Becker A, Blom J, Bonilla I, Goesmann A, Göttfert M, Lloret J, Mittard-Runte V, Pühler A, Rückert C, Ruiz-Sainz JE, Vinardell JM, Weidner A (2011) Symbiotic properties and first analyses of the genomic sequence of the fast growing model strain Sinorhizobium fredii HH103 nodulating soybean. J Biotechnol 155: 11-19.

Bordes P, Lavatine L, Phok K, Barriot R, Boulanger A, Castanié-Cornet MP, Becker A, Arlat M, Gutierrez C (2011) Insights into the extracytoplasmic stress response of Xanthomonas campestris pv. campestris : Role and regulation of σE-dependent activity. J Bacteriol 193: 246-264.

Joseph B, Schneiker-Bekel S, Schramm-Glück A, Blom J, Claus H, Linke B, Schwarz R, Becker A, Goesmann A, Frosch M, Schoen C (2010) Comparative genome biology of a serogroup B carriage and disease strain supports a polygenic nature of meningococcal virulence. J Bacteriol 192: 5363–5377.

Greif D, Pobigaylo N, Frage B, Becker A, Regtmeier J, Anselmetti D (2010) Space- and time-resolved protein dynamics in single bacterial cells observed on a microfluidics chip. J Biotechnol 149: 280-288.

Müller-Tidow C, Klein H-U, Hascher A, Isken F, Tickenbrock L, Thoennissen N, Agrawal-Singh S, Tschanter P, Disselhoff C, Wang Y, Becker A, Thiede C, Ehninger G, zur Stadt U, Koschmieder S, Seidl M, Müller FU, Schmitz W, Schlenke P, McClelland M, Berdel WE, Dugas D, Serve H (2010) Profiling of histone H3 lysine 9 trimethylation levels predicts transcription factor activity and survival in acute myeloid leukemia. Blood 116: 3564-3571.

Schlüter J-P, Reinkensmeier J, Daschkey S, Evguenieva-Hackenberg E, Janssen S, Jänicke S, Becker JD, Giegerich R, Becker A (2010) A genome-wide survey of sRNAs in the symbiotic nitrogen-fixing alpha-proteobacterium Sinorhizobium meliloti. BMC Genomics 11: 245.

McIntosh M, Meyer S, Becker A (2009) Novel Sinorhizobium meliloti quorum sensing positive and negative regulatory feedback mechanisms respond to phosphate availability. Mol Microbiol 74: 1238-1256.

Voss B, Hölscher M, Baumgarth B, Kalbfleisch A, Kaya C, Hess WR, Becker A, Evguenieva-Hackenberg E (2009) Expression of small RNAs in Rhizobiales and protection of a small RNA and its degradation products by Hfq in Sinorhizobium meliloti. Biochem Biophys Res Comm 390: 331-336.

Jofré E, Becker A (2009) In Sinorhizobium meliloti production of succinoglycan polymer is affected by SMb21506 and requires the N-terminal domain of ExoP. Mol Plant-Microbe Interact 22: 1656-1668.

Wollschläger K, Gaus K, Körnig A, Eckel R, Wilking SD, McIntosh M, Majer Z, Becker A, Ros R, Anselmetti D, Sewald S (2009) Single molecule experiments to elucidate the minimal requirement for DNA recognition by transcription factor epitopes. Small 5: 484-495.

Becker A, Barnett MJ, Capela D, Dondrup M, Kamp P-B, Krol E, Linke B, Rüberg S, Runte K, Schroeder BK, Weidner S, Yurgel S, Batut J, Long SR, Pühler A, Finan TM, Goesmann A (2009) A portal for rhizobial genomes: RhizoGATE integrates a S. meliloti genome annotation update with postgenome data. J Biotechnol 140: 45-50.

Krol E, Becker A (2009) Surface polysaccharides as fitness factors of nitrogen-fixing plant-associated bacteria. In: Ullrich M (ed.). Bacterial Polysaccharides: Current Innovations and Future Trends. Horizon Press. pp. 189-211. Review

Becker A (2009) Functional Genomics of Rhizobia. In: Pawlowski K (ed.). Prokaryotic Symbionts in Plants (Microbiology Monographs, Volume 8). Springer, Heidelberg, Germany. pp. 71-100. Review

Becker A, Vorhölter F-J (2008) Xanthan biosynthesis by Xanthomonas bacteria – an overview of the current biochemical and genomic data. In: Rehm BHA (ed.). Microbial production of biopolymers and polymer precursors: Applications and perspectives. Caister Academic Press, Norfolk, UK. pp. 1-11. Review

Valverde C, Livny J, Schlüter J-P, Reinkensmeier J, Becker A, Parisi G (2008) Prediction of Sinorhizobium meliloti sRNA genes and experimental detection in strain 2011. BMC Genomics 9: 416.

Bahlawane C, McIntosh M, Krol E, Becker A (2008) Sinorhizobium meliloti regulator MucR couples exopolysaccharide synthesis and motility. Mol Plant-Microbe Interact 21: 1498-1509.

McIntosh M, Krol E, Becker A (2008) Competitive and co-operative effects in quorum sensing regulated galactoglucan biosynthesis in Sinorhizobium meliloti. J Bacteriol 190: 5308–5317.

Stiens M, Becker A, Bekel T, Gödde V, Goesmann A, Niehaus K, Schneiker-Bekel S, Selbitschka W, Weidner S, Schlüter A, Pühler A (2008) Comparative genomic analysis and ultrafast pyrosequencing revealed remarkable differences between the Sinorhizobium meliloti genomes of the model strain Rm1021 and the field isolate SM11. J Biotechnol 136(1-2): 31-37.

Serrania J, Vorhölter F-J, Niehaus K, Pühler A, Becker A (2008) Identification of Xanthomonas campestris pv. campestris galactose utilization genes from transcriptome data. J Biotechnol 135: 309-317.

Cosme AM, Becker A, Santos MR, Sharypova LA, Santos PM, Moreira LM (2008) The outer membrane protein TolC from Sinorhizobium meliloti affects protein secretion, polysaccharide biosynthesis, antimicrobial resistance and symbiosis. Mol Plant-Microbe Interact 21: 947-957.

Bahlawane C, Baumgarth B, Serrania J, Rüberg S, Becker A (2008) Fine-tuning of galactoglucan biosynthesis in Sinorhizobium meliloti by differential ExpG- (WggR‑), PhoB-, and MucR-dependent regulation of two promoters. J Bacteriol 190: 3456-3466.

Nodop A, Pietsch D, Becker A, Pistorius EK, Forchhammer K, Michel K-P (2008) Transcript profiling reveals new insights into the acclimation of the mesophilic fresh-water cyanobacterium Synechococcus elongatus PCC 7942 to iron starvation. Plant Physiol 147:747-763.

Schriek S, Aguirre-von-Wobeser E, Nodop A, Becker A, Ibelings BW, Bok J, Staiger D, Matthijs HC, Pistorius EK, Michel KP (2008) Transcript-profiling indicates that the absence of PsbO affects the coordination of C and N metabolism in Synechocystis sp. PCC 6803. Physiol Plant 133: 525-543.

Vijayendran C, Barsch A, Niehaus K, Becker A, Flaschel E (2008) Perceiving molecular evolution processes in Escherichia coli by comprehensive metabolite and gene expression profiling. Genome Biology 9:R72, doi:10.1186/gb-2008-9-4-r72

Vorhölter FJ, Schneiker S, Goesmann A, Krause L, Bekel T, Kaiser O, Linke B, Patschkowski T, Rückert C, Schmid J, Sidhu VK, Sieber V, Tauch A, Watt SA, Weisshaar B, Becker A, Niehaus K, Pühler A (2008) The genome of Xanthomonas campestris pv. campestris B100 and its use for the reconstruction of metabolic pathways involved in xanthan biosynthesis. J Biotechnol 134: 33-45.

Pobigaylo N, Szymczak S, Nattkemper TW, Becker A (2008) Identification of genes relevant to symbiosis and competitiveness in Sinorhizobium meliloti using signature-tagged mutants. Mol Plant-Microbe Interact 21: 219-231.

Anselmetti D, Bartels FW, Becker A, Decker B, Eckel R, McIntosh M, Mattay J, Plattner P, Ros R, Schäfer C, Sewald N (2008) Reverse Engineering of an Affinity-Switchable Molecular Interaction Characterized by AFM Single Molecule Force Spectroscopy. Langmuir 24: 1365-1370. Review

Küster H, Becker A (2008) Microarrays as tools to decipher transcriptomes in symbiotic interactions. In: Kahl G, Meksem K (eds.). The Handbook of Plant Functional Genomics. Wiley-VCH. pp. 137-162. Review

Nyamsuren O, Firnhaber C, Hohnjec N, Becker A, Küster H, Krajinski F (2007) Suppression of the pathogen-inducible Medicago truncatula putative protease-inhibitor MtTi2 does not influence root infection by Aphanomyces euteiches but results in transcriptional changes from wild type roots. Plant Sci 173: 84-95.

Bartels FW, McIntosh M, Metzendorf C, Plattner P, Sewald N, Anselmetti D, Ros R, Becker A (2007) Effector-stimulated single molecule protein-DNA interactions of a quorum-sensing system in Sinorhizobium meliloti. Biophys J 92: 4391-4400.

Perrine-Walker FM, Gartner E, Hocart CH, Becker A, Rolfe BG (2007) Rhizobium-initiated rice growth inhibition caused by nitric oxide accumulation. Mol Plant-Microbe Interact 20: 283-292.

Küster H, Becker A, Firnhaber C, Hohnjec N, Manthey K, Perlick AM, Bekel T, Dondrup M, Henckel K, Goesmann A, Meyer F, Wipf D, Requena N, Hildebrandt U, Hampp R, Nehls U, Krajinski F, Franken P, Pühler A (2007) Development of bioinformatic tools to support EST-sequencing, in silico- and microarray-based transcriptome profiling in mycorrhizal symbioses. Phytochemistry 68: 19-32. Review

Martini J, Hellmich W, Greif D, Becker A, Merkle T, Ros R, Ros A, Tönsing K, Anselmetti D (2007) Systems Nanobiology: From Quantitative Single Molecule Biophysics to Microfluidic-Based Single Cell Analysis. Subcell Biochem 43: 301-321. Review

Yao Z, Tian Z, Dai X, Becker A, Li J, Yan H, Xiao Y, Zhu J, Yu G, Rüberg S, Wang Y, Zou H (2006) Complementation analyses of Sinorhizobium meliloti nifA mutant with different originated nifA genes. Chinese Science Bulletin 51: 2748-2754.

Tian Z, Zou H, Li J, Zhang Y, Liu Y, Yu G, Zhu J, Rüberg S, Becker A, Wang Y (2006) Transcriptome analysis of Sinorhizobium meliloti nodule bacteria in nifA mutant background. Chinese Science Bulletin 51: 2079-2086.

Tian Z, Mao X, Su W, Li J, Becker A, Wang Y-P (2006) Exogenous cAMP upregulates the expression of glnII and glnK-amtB genes in Sinorhizobium meliloti 1021. Chinese Science Bulletin 51: 1982-1985.

Sharypova LA, Chataigne G, Fraysse N, Becker A, Poinsot V (2006) Overproduction and increased molecular weight account for the symbiotic activity of the rkpZ-modified K polysaccharide from Sinorhizobium meliloti Rm1021. Glycobiology 16: 1181-93.

Domínguez-Ferreras A, Pérez-Arnedo R, Becker A, Olivares J, Soto MJ, Sanjuán J (2006) Transcriptome profiling reveals the importance of plasmid pSymB for osmoadaptation of Sinorhizobium meliloti. J Bacteriol 188: 7617-7625.

Brune I, Becker A, Paarmann D, Albersmeier A, Kalinowski J, Pühler A, Tauch A (2006) Under the influence of the active deodorant ingredient 4-hydroxy-3-methoxybenzyl alcohol, the skin bacterium Corynebacterium jeikeium moderately responds with differential gene expression. J Biotechnol 127: 21-33.

Buitink J, Guisle I, Le Meur N, Ly Vu B, Wuillème S, Leger J, Becker A, Küster H, Leprince O (2006) Transcriptome profiling uncovers metabolic and regulatory processes occuring during the transition from dessication-sensitive to dessication-tolerant stages in Medicago truncatula seeds. Plant J 47: 735-750.

Pobigaylo N, Wetter D, Szymczak S, Schiller U, Kurtz S, Meyer F, Nattkemper TW, Becker A (2006) Construction of a large sequence signature-tagged miniTn5 transposon library and its application to mutagenesis of Sinorhizobium meliloti. Appl Environ Microbiol 72: 4329-4337.

Plattner HP, Metzendorf C, McIntosh M, Bartels FW, Anselmetti D, Ross R, Becker A, Sewald N (2006) Synthesis of modified N-acylhomoserinelactones. J Pept Sci 12: 207.

Sewald N, Wilking SD, Eckel R, Albu S, Wollschlager K, Gaus K, Becker A, Bartels FW, Ros R, Anselmetti D (2006) Probing DNA-peptide interaction forces at the single-molecule level. J Pept Sci 12(12): 836-842. Review

Giuntini E, Mengoni A, De Filippo C, Cavalieri D, Aubin-Horth N, Landry CR, Becker A, Bazzicalupo M (2005) Large-scale genetic variation of the symbiosis-required megaplasmid pSymA revealed by comparative genomic analysis of Sinorhizobium meliloti natural strains. BMC Genomics 6: 158.

Luo L, Yao S-Y, Becker A, Rüberg S, Yu Q-Q, Zhu J-B, Cheng HP (2005) Identification of two new Sinorhizobium meliloti LysR-like transcriptional regulators required in nodulation. J Bacteriol 187: 4562-4572.

Eckel R, Wilking SD, Becker A, Sewald N, Ros R, Anselmetti D (2005) Single molecule experiments in synthetic biology: An approach to the affinity ranking of DNA-binding peptides (p NA). Angew Chem Int Ed 44: 3921-3924.

Hohnjec N, Vieweg MF, Pühler A, Becker A, Küster H (2005) Overlaps in the transcriptional profiles of Medicago truncatula roots inoculated with two different Glomus spec. fungi provide insights into the genetic program activated during arbuscular mycorrhiza. Plant Physiol 137: 1283-1301.

Baumgarth B, Bartels FW, Rüberg S, Anselmetti A, Becker A, Ros R (2005) Detailed studies of the binding mechanism of the Sinorhizobium meliloti transcriptional activator ExpG to DNA. Microbiology 151: 259-268.

Moreira LM, Hoffmann K, Albano H, Becker A, Niehaus K, Sá-Correia I (2005) Functional analysis of the gellan genes gelC and gelE from Sphingomonas elodea ATCC 31461 encoding two separate polypeptides homologous to the activator and to the kinase domains of phosphotyrosine autokinases. J Mol Microbiol Biotechnol 8: 43-57.

Onishchuk OP, Sharypova LA, Kurchak ON, Becker A, Simarov BV (2005) Identification of Sinorhizobium meliloti genes influencing synthesis of surface polysaccharides and competitiveness. Genetika 41:1617-1623.

Becker A, Fraysse N, Sharypova LA (2005) Recent advances in studies on structure and symbiosis-related function of rhizobial K-antigens and lipopolysaccharides. Mol Plant-Microbe Interact 18: 899-905. Review

Reiss G, Brückl H, Huetten A, Schotter J, Brzeska M, Panhorst M, Sudfeld D, Becker A, Kamp PB, Pühler A, Wojczykowski K, Jutzi P (2005) Magnetoresistive Sensors and Magnetic Nanoparticles for Biotechnology. J Mater Res 20: 3294. Review

Brückl H, Panhorst M, Schotter J, Kamp PB, Becker A (2005) Magnetic particles as markers and carriers of biomolecules. IEE Proc Nanobiotechnol 152: 41-46. Review

Becker A, de Bruijn FJ (2005) Transcriptomics in Sinorhizobium meliloti. In: Palacios R, Newton WE (eds.). Genomes and Genomics of Nitrogen-fixing Organisms. Springer, Dordrecht, The Netherlands. pp. 169-181. Review

Brückl H, Brzeska M, Brinkmann D, Schotter J, Reiss G, Schepper W, Kamp PB, Becker A (2004) Magnetoresistive logic and biochip. J Magn Magn Mater 282: 219-224.

Puskás L, Nagy Z, Kelemen JZ, Rüberg S, Bodogai M, Becker A, Dusha I (2004) Wide-range transcriptional modulating effect of ntrR under microaerobiosis in Sinorhizobium meliloti. Mol Gen Genomics 272: 275-289.

El Yahyaoui F, Küster H, Ben Amor B, Hohnjec N, Pühler A, Becker A, Gouzy J, Vernié T, Gough C, Niebel A, Godiard L, Gamas P (2004) Expression profiling in Medicago truncatula identifies more than 900 genes differentially expressed during nodulation, including many potential regulators of the symbiotic program. Plant Physiol 136: 3159-3176.

Yao S-Y, Luo L, Har KJ, Becker A, Rüberg S, Yu G-Q, Zhu JB, Cheng H-P (2004) The Sinorhizobium meliloti ExoR and ExoS proteins regulate both succinoglycan and flagella production. J Bacteriol 186: 6042-6049.

Krol E, Becker A (2004) Global transcriptional analysis of phosphate stress responses in Sinorhizobium meliloti strains 1021 and 2011. Mol Gen Genomics 272: 1-17.

Grunwald U, Nyamsuren O, Tamasloukht M, Lapopin L, Becker A, Mann P, Gianinazzi-Pearson V, Krajinski F, Franken P (2004) Identification of mycorrhiza-regulated genes with arbuscule development-related expression profile. Plant Mol Biol 55: 553-566.

Ros R, Eckel R, Bartels F, Sischka A, Baumgarth B, Wilking SD, Pühler A, Sewald N, Becker A, Anselmetti D (2004) Single molecule force spectroscopy on ligand-DNA complexes: From molecular binding mechanisms to biosensor applications. J Biotechnol 112: 5-12.

Brzeska M, Panhorst M, Kamp PB, Schotter J, Reiss G, Pühler A, Becker A, Brückl H (2004) Detection and manipulation of biomolecules by magnetic carriers. J Biotechnol 112: 25-33.

Hoang HH, Becker A, González JE (2004) The LuxR homolog ExpR, in combination with the Sin quorum sensing system, plays a central role in Sinorhizobium meliloti gene expression. J Bacteriol 186: 5460-5472.

Quester I, Becker A (2004) Four promoters subject to regulation by ExoR and PhoB direct transcription of the Sinorhizobium meliloti exoYFQ operon involved in biosynthesis of succinoglycan. J Mol Microbiol Biotechnol 7: 115-132.

Chao T-C, Becker A, Buhrmester J, Pühler A, Weidner S (2004) The Sinorhizobium meliloti fur gene regulates in dependence of Mn(II) the transcription of the sitABCD operon encoding a metal type transporter. J Bacteriol 186: 3609-3620.

Becker A, Bergès H, Krol E, Bruand C, Rüberg S, Capela D, Lauber E, Meilhoc E, Ampe A, de Bruijn FJ, Fourment J, Francez-Charlot A, Kahn D, Küster H, Liebe C, Pühler A, Weidner S, Batut J (2004) Global changes in gene expression in Sinorhizobium meliloti 1021 under microoxic and symbiotic conditions. Mol Plant-Microbe Interact 17: 292-303.

Küster H, Hohnjec N, Krajinski F, El Yahyaoui F, Manthey K, Gouzy J, Dondrup M, Meyer F, Kalinowski J, Brechenmacher L, van Tuinen D, Gianinazzi-Pearson V, Pühler A, Gamas P, Becker A (2004) Construction and validation of comprehensive cDNA-based macro- and microarrays to explore root nodule endosymbioses in the model legume Medicago truncatula. J Biotechnol 108: 95-113.

Schotter J, Kamp PB, Becker A, Pühler A, Reiss, G, Brückl H (2004) Comparison of a prototype magnetoresistive biosensor to standard fluorescent DNA-detection. Biosensors and Bioelectronics 19: 1149-1156.

Becker A (2004) Design of microarrays for genome-wide expression profiling. In: Kowalchuk GA, de Bruijn FJ, Head IM, Akkermans ADL, van Elsas JD (eds.). Molecular Microbial Ecology Manual, 2nd edition. Kluwer Academic Publishers, Dordrecht. The Netherlands. pp. 1543-1562. Review

Pühler A, Arlat M, Becker A, Göttfert M, Morrissey JP, O’Gara F (2004) What can bacterial genome research teach us about bacteria-plant interactions? Curr Opp Plant Biol 7: 137-147. Review

Bartels F, Baumgarth B, Anselmetti D, Ros R, Becker A (2003) Specific binding of the regulatory protein ExpG to promoter regions of the galactoglucan biosynthesis gene cluster of Sinorhizobium meliloti - A combined molecular biology and force spectroscopy investigation. J Struct Biol 143: 145-152.

Rüberg S, Tian ZX, Krol E, Linke B, Meyer F, Wang Y, Pühler A, Weidner S, Becker A (2003) Construction and validation of a DNA microarray for genome-wide expression profiling in Sinorhizobium meliloti. J Biotechnol 106: 255-268.

Hüser AT, Becker A, Brune I, Dondrup M, Kalinowski J, Plassmeier J, Pühler A, Wiegräbe I, Tauch A (2003) Development of a Corynebacterium glutamicum DNA microarray and validation by genome-wide expression profiling during growth with propionate as carbon source. J Biotechnol 106: 269-286.

Sharypova LA, Niehaus K, Scheidle H, Holst O, Becker A (2003) Sinorhizobium meliloti acpXL mutant lacks the C28 hydroxylated fatty acid moiety of lipid A and does not express smooth LPS. J Biol Chem 278: 12946-12954.

Campbell G, Scheidle H, Sharypova LA, Jones K, Niehaus K, Becker A, and Walker GC (2003) Striking complexity of lipopolysaccharide defects in a collection of Sinorhizobium meliloti mutants. J Bacteriol 185: 3853-3862.

Schotter J, Kamp PB, Becker A, Pühler A, Brinkmann D, Schepper W, Brückl H, Reiss G (2002) A Biochip based on magnetoresistive sensors. IEEE Trans Mag 38: 3365-3367.

Becker A, Rüberg S, Baumgarth B, Bertram-Drogatz PA, Quester I, Pühler A (2002) Regulation of succinoglycan and galactoglucan biosynthesis in Sinorhizobium meliloti. J Mol Microbiol Biotech 4: 187-190. Review

Niemeyer D, Becker A (2001) The molecular weight distribution of succinoglycan produced by Sinorhizobium meliloti is influenced by specific phosphorylation and ATPase activity of the cytoplasmic domain of the ExoP protein. J Bacteriol 183: 5163-5170.

Schröter K, Flaschel E, Pühler A, Becker A (2001) Xanthomonas campestris pv. campestris secretes the endoglucanases ENGXCA and ENGXCB: construction of an endoglucanase deficient mutant for industrial xanthan production. Appl Microbiol Biotech 55: 727-733.

Galibert F, Finan TM, Long SR, Pühler A, Abola P, Ampe F, Barloy-Hubler F, Barnett MJ, Becker A, Boistard P, Bothe G, Boutry M, Bowser L, Buhrmester J, Cadieu E, Capela D, Chain P, Cowie A, Davis RW, Dréano S, Federspiel NA, Fisher RF, Gloux S, Godrie T, Goffeau A, Golding B, Gouzy J, Gurjal M, Hernandez-Lucas I, Hong A, Huizar L, Hyman RW, Jones T, Kahn D, Kahn ML, Kalman S, Keating D, Kiss E, Komp C, Lelaure V, Masuy D, Palm C, Peck MC, Pohl T, Portetelle D, Purnelle B, Ramsperger U, Surzycki R, Thébault P, Vandenbol M, Vorhölter F-J, Weidner S, Wells DH, Wong K, Yeh K-C, Batut J (2001) The composite genome of the legume symbiont Sinorhizobium meliloti. Science 293: 668-672.

Capela D, Barloy-Hubler F, Gouzy J, Bothe G, Ampe F, Batut J, Boistard P, Becker A, Boutry M, Cadieu E, Dréano S, Gloux S, Godire T, Goffeau A, Kahn D, Lelaure V, Masuy D, Pohl T, Portelle D, Pühler A, Purnelle B, Ramsperger U, Thébault P, Vandenbol M, Weidner S, Galibert F (2001) Analysis of the chromosome sequence of the legume symbiont Sinorhizobium meliloti. Proc Natl Acad Sci USA 98: 9877-9882.

Finan TM, Weidner S, Chain P, Becker A, Wong K, Cowie A, Buhrmester J, Vorhölter F-J, Golding B, Pühler A (2001) The complete sequence of the Sinorhizobium meliloti pSymB megaplasmid. Proc Natl Acad Sci USA 98: 9889-9894.

Moreira LM, Becker JD, Pühler A, Becker A (2000) The Sinorhizobium meliloti ExpE1 protein secreted by a type I secretion system involving ExpD1 and ExpD2 is required for biosynthesis or secretion of the exopolysaccharide galactoglucan. Microbiology 146: 2237-2248.

Becker A, Niehaus K, Pühler A (2000) The role of rhizobial extracellular polysaccharides (EPS) in the Sinorhizobium meliloti – alfalfa symbiosis. In: Triplett E (ed.). Nitrogen Fixation in Prokaryotes: Molecular and Cellular Biology. Horizon Scientific Press. pp. 433-447. Review

Sharypova LA, Yurgel SN, Keller M, Simarov BV, Pühler A, Becker A (1999) The eff-482 locus of Sinorhizobium meliloti CXM1-105 that influences symbiotic effectiveness consists of three genes encoding an endoglycanase, a transcriptional regulator and an adenylate cyclase. Mol Gen Genet 261: 1032-1044.

Rüberg S, Pühler A, Becker A (1999) Biosynthesis of the exopolysaccharide galactoglucan in Sinorhizobium meliloti is subject to a complex control by the phosphate-dependent regulator PhoB and the proteins ExpG and MucR. Microbiology 145: 603-611.

Katzen F, Becker A, Ielmini MV, Oddo CG, Ielpi L (1999) New mobilizable vectors suitable for gene replacement in Gram-negative bacteria and its use to map the 3' end of the Xanthomonas campestris pv. campestris gum operon. Appl Environ Microbiol 65: 278-282.

Katzen F, Ferreiro DU, Oddo CG, Ielmini V, Becker A, Pühler A, Ielpi L (1998) Xanthomonas campestris pv. campestris gum mutants: effects on xanthan biosynthesis and plant virulence. J Bacteriol 180: 1607-1617.

Becker A, Pühler A (1998) Specific amino acid substitutions in the proline-rich motif of the Rhizobium meliloti ExoP protein result in enhanced production of low-molecular-weight succinoglycan at the expense of high-molecular-weight succinoglycan. J Bacteriol 180: 395-399.

Bertram-Drogatz PA, Quester I, Becker A, Pühler A (1998) The Sinorhizobium meliloti MucR protein, which is essential for the production of high-molecular-weight succinoglycan exopolysaccharide, binds to short DNA regions upstream of exoH and exoY. Mol Gen Genet 257: 433-441.

Becker A, Katzen F, Pühler A, Ielpi L (1998) Xanthan gum biosynthesis and application: a biochemical-genetic perspective. Appl Microbiol Biotechnol 50: 145-152. Review

Niehaus K, Becker A (1998) The role of microbial surface polysaccharides in the Rhizobium-legume interaction. In: Biswas BB, Das HK (eds.). Subcellular Biochemistry, Vol. 29: Plant-Microbe Interactions. Plenum Press, New York, USA. pp. 73-115. Review

Becker A, Pühler A (1998) Production of exopolysaccharides. In: Spaink HP, Kondorosi A, Hooykaas PJJ (eds.). The Rhizobiaceae. Molecular Biology of Model Plant-Associated Bacteria. Kluwer Academic Publishers, Dordrecht, The Netherlands. pp. 97-118. Review

Katzen F, Ielmini V, Oddo CG, Ferreiro DU, Becker A, Pühler A, Ielpi L (1998) Biosynthesis of xanthan. In: Steinbüchel A (ed.). Biochemical Principles and Mechanisms of Biosynthesis and Biodegradation of Polymers. Wiley-VCH-Verlag, Weinheim, Germany. pp. 152-160. Review

Becker A, Rüberg S, Quester I, Bertram-Drogatz PA, Schlößer H, Moreira LM, Sharypova L, Pühler A (1998) Genetics of succinoglycan and galactoglucan biosynthesis in Sinorhizobium meliloti. In: Steinbüchel A (ed.). Biochemical Principles and Mechanisms of Biosynthesis and Biodegradation of Polymers. Wiley-VCH-Verlag, Weinheim, Germany. pp. 113-121. Review

Jacq C, Alt-Mörbe J, Andre B, Arnold W, Bahr A, Ballesta JPG, Bargues M, Baron L, Becker A, et al. (1997) The nucleotide sequence of Saccharomyces cerevisiae chromosome IV. Nature 387 (suppl.): 75‑78.

Bertram-Drogatz PA, Rüberg S, Becker A, Pühler A (1997) The regulatory protein MucR binds to a short DNA region located upstream of the mucR coding region in Rhizobium meliloti. Mol Gen Genet 254: 529-538.

Becker A, Rüberg S, Küster H, Roxlau AA, Keller M, Ivashina T, Cheng H-P, Walker GC, Pühler A (1997) The 32-kb exp gene cluster of Rhizobium meliloti directing the biosynthesis of galactoglucan: genetic organization and properties of the encoded gene products. J Bacteriol 179: 1375-1384.

Katzen F, Becker A, Zorreguieta A, Pühler A, Ielpi L (1996) Promoter analysis of the Xanthomonas campestris pv. campestris gum operon directing the biosynthesis of the xanthan polysaccharide. J Bacteriol 178: 4313-4318.

Becker A, Küster H, Niehaus K, Pühler A (1995) Extension of the Rhizobium meliloti succinoglycan biosynthesis gene cluster: identification of the exsA gene encoding an ABC transporter protein, and the exsB gene which probably codes for a regulator of succinoglycan biosynthesis. Mol Gen Genet 249: 487-497.

Becker A, Schmidt M, Jäger W, Pühler A (1995) New gentamicin resistance and lacZ promoter-probe cassettes suitable for insertion mutagenesis and generation of transcriptional fusions. Gene 162: 37-39.

Becker A, Niehaus K, Pühler A (1995) Low molecular weight succinoglycan is predominantly produced by Rhizobium meliloti strains carrying a mutated ExoP protein characterized by a periplasmic N-terminal and a missing C-terminal domain. Mol Microbiol 16: 191-203.

Arnold W, Becker A, Keller M, Roxlau A, Pühler A (1994) The role of Rhizobium meliloti surface polysaccharides in the infection of Medicago sativa nodules. Endocytobiosis & Cell Res 10: 17-28. Review

Becker A, Kleickmann A, Küster H, Keller M, Arnold W, Pühler A (1993) Analysis of the Rhizobium meliloti genes exoU, exoV, exoW, exoT and exoI involved in exopolysaccharide biosynthesis and nodule invasion: exoU and exoW probably encode glucosyltransferases. Mol Plant-Microbe Interact 6: 735-744.

Becker A, Kleickmann A, Keller M, Arnold W, Pühler A (1993) Identification and analysis of the Rhizobium meliloti exoAMONP genes involved in exopolysaccharide biosynthesis and mapping of promoters located on the exoHKLAMONP fragment. Mol Gen Genet 241: 367-379.

Becker A, Kleickmann A, Arnold W, Pühler A (1993) Analysis of the Rhizobium meliloti exoH/exoK/exoL fragment: ExoK shows homology to excreted endo-β-1,3-1,4-glucanases and ExoH resembles membrane proteins. Mol Gen Genet 238: 145-154.

Arnold W, Keller M, Becker A, Roxlau A, Niehaus K, Quandt J, Weng W-M, Pühler A (1992) The surface polysaccharides of Rhizobium meliloti and their role in forming N2-fixing alfalfa nodules. Review