Anke Becker

Prediction of Sinorhizobium melilotisRNA genes and experimental detection in strain 2011 (2008)

Valverde, Claudio, Livny, Jonathan, Schlüter, Jan-Philip, Reinkensmeier, Jan, Becker, Anke, Parisi, Gustavo

Abstract Background Small non-coding RNAs (sRNAs) have emerged as ubiquitous regulatory elements in bacteria and other life domains. However, few sRNAs have been identified outside several...

Perceiving molecular evolution processes in Escherichia coliby comprehensive metabolite and gene expression profiling (2008)

Vijayendran, Chandran, Barsch, Aiko, Friehs, Karl, Niehaus, Karsten, Becker, Anke, Flaschel, Erwin

Abstract Background Evolutionary changes that are due to different environmental conditions can be examined based on the various molecular aspects that constitute a cell, namely transcript, protein,...

Large-scale genetic variation of the symbiosis-required megaplasmid pSymA revealed by comparative genomic analysis of Sinorhizobium melilotinatural strains (2005)

Giuntini, Elisa, Mengoni, Alessio, De Filippo, Carlotta, Cavalieri, Duccio, Aubin-Horth, Nadia, Landry, Christian R, ...

Abstract Background Sinorhizobium meliloti is a soil bacterium that forms nitrogen-fixing nodules on the roots of leguminous plants such as alfalfa ( Medicago sativa ). This species occupies...

BioMed Central (2005)

Bmc Genomics, Elisa Giuntini, Alessio Mengoni, Duccio Cavalieri, Nadia Aubin-horth, Christian R L, ...

Research article Large-scale genetic variation of the symbiosis-required megaplasmid pSymA revealed by comparative genomic analysis of Sinorhizobium meliloti natural strains

Analysis of the chromosome sequence of the legume symbiont Sinorhizobium meliloti strain 1021

Capela, Delphine, Barloy-Hubler, Frédérique, Gouzy, Jérôme, Bothe, Gordana, Ampe, Frédéric, Batut, Jacques, ...

Sinorhizobium meliloti is an α-proteobacterium that forms agronomically important N2-fixing root nodules in legumes. We report here the complete sequence of the largest constituent of its genome, a...

The complete sequence of the 1,683-kb pSymB megaplasmid from the N2-fixing endosymbiont Sinorhizobium meliloti

Finan, Turlough M., Weidner, Stefan, Wong, Kim, Buhrmester, Jens, Chain, Patrick, Vorhölter, Frank J., ...

Analysis of the 1,683,333-nt sequence of the pSymB megaplasmid from the symbiotic N2-fixing bacterium Sinorhizobium meliloti revealed that the replicon has a high gene density with a total of 1,570...

New Mobilizable Vectors Suitable for Gene Replacement in Gram-Negative Bacteria and Their Use in Mapping of the 3′ End of the Xanthomonas campestris pv. campestris gum Operon

Katzen, Federico, Becker, Anke, Ielmini, M. Verónica, Oddo, Cristian G., Ielpi, Luis

We describe useful vectors to select double-crossover events directly in site-directed marker exchange mutagenesis in gram-negative bacteria. These vectors contain the gusA marker gene, providing...

The Molecular Weight Distribution of Succinoglycan Produced by Sinorhizobium meliloti Is Influenced by Specific Tyrosine Phosphorylation and ATPase Activity of the Cytoplasmic Domain of the ExoP Protein

Niemeyer, Dagmar, Becker, Anke

It is thought that in the gram-negative soil bacterium Sinorhizobium meliloti the protein ExoP is involved in biosynthesis of the acidic exopolysaccharide succinoglycan (EPS I). The amounts and...

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

Becker, Anke, Pühler, Alfred

The production of the acidic exopolysaccharide succinoglycan (EPS I) by Rhizobium meliloti exoP* mutants expressing an ExoP protein lacking its C-terminal cytoplasmic domain and by mutants...

Xanthomonas campestris pv. campestris gum Mutants: Effects on Xanthan Biosynthesis and Plant Virulence

Katzen, Federico, Ferreiro, Diego U., Oddo, Cristian G., Ielmini, M. Verónica, Becker, Anke, Pühler, Alfred, ...

Xanthan is an industrially important exopolysaccharide produced by the phytopathogenic, gram-negative bacterium Xanthomonas campestris pv. campestris. It is composed of polymerized pentasaccharide...

Striking Complexity of Lipopolysaccharide Defects in a Collection of Sinorhizobium meliloti Mutants

Campbell, Gordon R. O., Sharypova, Larissa A., Scheidle, Heiko, Jones, Kathryn M., Niehaus, Karsten, Becker, Anke, ...

Although the role that lipopolysaccharide (LPS) plays in the symbiosis between Sinorhizobium meliloti and alfalfa has been studied for over a decade, its function in this process remains...

The Sinorhizobium meliloti fur Gene Regulates, with Dependence on Mn(II), Transcription of the sitABCD Operon, Encoding a Metal-Type Transporter

Chao, Tzu-Chiao, Becker, Anke, Buhrmester, Jens, Pühler, Alfred, Weidner, Stefan

Sinorhizobium meliloti is an alpha-proteobacterium able to induce nitrogen-fixing nodules on roots of specific legumes. In order to propagate in the soil and for successful symbiotic interaction the...

The LuxR Homolog ExpR, in Combination with the Sin Quorum Sensing System, Plays a Central Role in Sinorhizobium meliloti Gene Expression†

Hoang, Hanh H., Becker, Anke, González, Juan E.

Quorum sensing, a population density-dependent mechanism for bacterial communication and gene regulation, plays a crucial role in the symbiosis between alfalfa and its symbiont Sinorhizobium...

Sinorhizobium meliloti ExoR and ExoS Proteins Regulate both Succinoglycan and Flagellum Production

Yao, Shi-Yi, Luo, Li, Har, Katherine J., Becker, Anke, Rüberg, Silvia, Yu, Guan-Qiao, ...

The production of the Sinorhizobium meliloti exopolysaccharide, succinoglycan, is required for the formation of infection threads inside root hairs, a critical step during the nodulation of alfalfa...

Expression Profiling in Medicago truncatula Identifies More Than 750 Genes Differentially Expressed during Nodulation, Including Many Potential Regulators of the Symbiotic Program1[w]

El Yahyaoui, Fikri, Küster, Helge, Amor, Besma Ben, Hohnjec, Natalija, Pühler, Alfred, Becker, Anke, ...

In this study, we describe a large-scale expression-profiling approach to identify genes differentially regulated during the symbiotic interaction between the model legume Medicago truncatula and the...

Two New Sinorhizobium meliloti LysR-Type Transcriptional Regulators Required for Nodulation

Luo, Li, Yao, Shi-Yi, Becker, Anke, Rüberg, Silvia, Yu, Guan-Qiao, Zhu, Jia-Bi, ...

The establishment of an effective nitrogen-fixing symbiosis between Sinorhizobium meliloti and its legume host alfalfa (Medicago sativa) depends on the timely expression of nodulation genes that are...

Overlaps in the Transcriptional Profiles of Medicago truncatula Roots Inoculated with Two Different Glomus Fungi Provide Insights into the Genetic Program Activated during Arbuscular Mycorrhiza1[w]

Hohnjec, Natalija, Vieweg, Martin F., Pühler, Alfred, Becker, Anke, Küster, Helge

Arbuscular mycorrhiza (AM) is a widespread symbiotic association between plants and fungal microsymbionts that supports plant development under nutrient-limiting and various stress conditions. In...

Construction of a Large Signature-Tagged Mini-Tn5 Transposon Library and Its Application to Mutagenesis of Sinorhizobium meliloti†

Pobigaylo, Nataliya, Wetter, Danijel, Szymczak, Silke, Schiller , Ulf, Kurtz, Stefan, Meyer, Folker, ...

Sinorhizobium meliloti genome sequence determination has provided the basis for different approaches of functional genomics for this symbiotic nitrogen-fixing alpha-proteobacterium. One of these...

Analysis of the chromosome sequence of the legume symbiont Sinorhizobium meliloti strain 1021

Capela, Delphine, Barloy-Hubler, Frédérique, Gouzy, Jérôme, Bothe, Gordana, Ampe, Frédéric, Batut, Jacques, ...

Sinorhizobium meliloti is an α-proteobacterium that forms agronomically important N2-fixing root nodules in legumes. We report here the complete sequence of the largest constituent of its genome, a...

The complete sequence of the 1,683-kb pSymB megaplasmid from the N2-fixing endosymbiont Sinorhizobium meliloti

Finan, Turlough M., Weidner, Stefan, Wong, Kim, Buhrmester, Jens, Chain, Patrick, Vorhölter, Frank J., ...

Analysis of the 1,683,333-nt sequence of the pSymB megaplasmid from the symbiotic N2-fixing bacterium Sinorhizobium meliloti revealed that the replicon has a high gene density with a total of 1,570...

New Mobilizable Vectors Suitable for Gene Replacement in Gram-Negative Bacteria and Their Use in Mapping of the 3′ End of the Xanthomonas campestris pv. campestris gum Operon

Katzen, Federico, Becker, Anke, Ielmini, M. Verónica, Oddo, Cristian G., Ielpi, Luis

We describe useful vectors to select double-crossover events directly in site-directed marker exchange mutagenesis in gram-negative bacteria. These vectors contain the gusA marker gene, providing...

The Molecular Weight Distribution of Succinoglycan Produced by Sinorhizobium meliloti Is Influenced by Specific Tyrosine Phosphorylation and ATPase Activity of the Cytoplasmic Domain of the ExoP Protein

Niemeyer, Dagmar, Becker, Anke

It is thought that in the gram-negative soil bacterium Sinorhizobium meliloti the protein ExoP is involved in biosynthesis of the acidic exopolysaccharide succinoglycan (EPS I). The amounts and...

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

Becker, Anke, Pühler, Alfred

The production of the acidic exopolysaccharide succinoglycan (EPS I) by Rhizobium meliloti exoP* mutants expressing an ExoP protein lacking its C-terminal cytoplasmic domain and by mutants...

Xanthomonas campestris pv. campestris gum Mutants: Effects on Xanthan Biosynthesis and Plant Virulence

Katzen, Federico, Ferreiro, Diego U., Oddo, Cristian G., Ielmini, M. Verónica, Becker, Anke, Pühler, Alfred, ...

Xanthan is an industrially important exopolysaccharide produced by the phytopathogenic, gram-negative bacterium Xanthomonas campestris pv. campestris. It is composed of polymerized pentasaccharide...

Striking Complexity of Lipopolysaccharide Defects in a Collection of Sinorhizobium meliloti Mutants

Campbell, Gordon R. O., Sharypova, Larissa A., Scheidle, Heiko, Jones, Kathryn M., Niehaus, Karsten, Becker, Anke, ...

Although the role that lipopolysaccharide (LPS) plays in the symbiosis between Sinorhizobium meliloti and alfalfa has been studied for over a decade, its function in this process remains...

The Sinorhizobium meliloti fur Gene Regulates, with Dependence on Mn(II), Transcription of the sitABCD Operon, Encoding a Metal-Type Transporter

Chao, Tzu-Chiao, Becker, Anke, Buhrmester, Jens, Pühler, Alfred, Weidner, Stefan

Sinorhizobium meliloti is an alpha-proteobacterium able to induce nitrogen-fixing nodules on roots of specific legumes. In order to propagate in the soil and for successful symbiotic interaction the...

The LuxR Homolog ExpR, in Combination with the Sin Quorum Sensing System, Plays a Central Role in Sinorhizobium meliloti Gene Expression†

Hoang, Hanh H., Becker, Anke, González, Juan E.

Quorum sensing, a population density-dependent mechanism for bacterial communication and gene regulation, plays a crucial role in the symbiosis between alfalfa and its symbiont Sinorhizobium...

Sinorhizobium meliloti ExoR and ExoS Proteins Regulate both Succinoglycan and Flagellum Production

Yao, Shi-Yi, Luo, Li, Har, Katherine J., Becker, Anke, Rüberg, Silvia, Yu, Guan-Qiao, ...

The production of the Sinorhizobium meliloti exopolysaccharide, succinoglycan, is required for the formation of infection threads inside root hairs, a critical step during the nodulation of alfalfa...

Expression Profiling in Medicago truncatula Identifies More Than 750 Genes Differentially Expressed during Nodulation, Including Many Potential Regulators of the Symbiotic Program1[w]

El Yahyaoui, Fikri, Küster, Helge, Amor, Besma Ben, Hohnjec, Natalija, Pühler, Alfred, Becker, Anke, ...

In this study, we describe a large-scale expression-profiling approach to identify genes differentially regulated during the symbiotic interaction between the model legume Medicago truncatula and the...

Overlaps in the Transcriptional Profiles of Medicago truncatula Roots Inoculated with Two Different Glomus Fungi Provide Insights into the Genetic Program Activated during Arbuscular Mycorrhiza1[w]

Hohnjec, Natalija, Vieweg, Martin F., Pühler, Alfred, Becker, Anke, Küster, Helge

Arbuscular mycorrhiza (AM) is a widespread symbiotic association between plants and fungal microsymbionts that supports plant development under nutrient-limiting and various stress conditions. In...

Two New Sinorhizobium meliloti LysR-Type Transcriptional Regulators Required for Nodulation

Luo, Li, Yao, Shi-Yi, Becker, Anke, Rüberg, Silvia, Yu, Guan-Qiao, Zhu, Jia-Bi, ...

The establishment of an effective nitrogen-fixing symbiosis between Sinorhizobium meliloti and its legume host alfalfa (Medicago sativa) depends on the timely expression of nodulation genes that are...

Construction of a Large Signature-Tagged Mini-Tn5 Transposon Library and Its Application to Mutagenesis of Sinorhizobium meliloti†

Pobigaylo, Nataliya, Wetter, Danijel, Szymczak, Silke, Schiller , Ulf, Kurtz, Stefan, Meyer, Folker, ...

Sinorhizobium meliloti genome sequence determination has provided the basis for different approaches of functional genomics for this symbiotic nitrogen-fixing alpha-proteobacterium. One of these...

Transcriptome Profiling Reveals the Importance of Plasmid pSymB for Osmoadaptation of Sinorhizobium meliloti▿ †

Domínguez-Ferreras, Ana , Pérez-Arnedo, Rebeca, Becker, Anke, Olivares, José, Soto, María J., Sanjuán, Juan

In this work, DNA microarrays were used to investigate genome-wide transcriptional responses of Sinorhizobium meliloti to a sudden increase in external osmolarity elicited by addition of either NaCl...

Effector-Stimulated Single Molecule Protein-DNA Interactions of a Quorum-Sensing System in Sinorhizobium meliloti

Bartels, Frank Wilco, McIntosh, Matthew, Fuhrmann, Alexander, Metzendorf, Christoph, Plattner, Patrik, Sewald, Norbert, ...

Intercellular communication by means of small signal molecules coordinates gene expression among bacteria. This population density-dependent regulation is known as quorum sensing. The symbiotic...

Fine-Tuning of Galactoglucan Biosynthesis in Sinorhizobium meliloti by Differential WggR (ExpG)-, PhoB-, and MucR-Dependent Regulation of Two Promoters ▿

Bahlawane, Christelle, Baumgarth, Birgit, Serrania, Javier, Rüberg, Silvia, Becker, Anke

Depending on the phosphate concentration encountered in the environment Sinorhizobium meliloti 2011 synthesizes two different exopolysaccharides (EPS). Galactoglucan (EPS II) is produced under...

Competitive and Cooperative Effects in Quorum-Sensing-Regulated Galactoglucan Biosynthesis in Sinorhizobium meliloti▿

McIntosh, Matthew, Krol, Elizaveta, Becker, Anke

The symbiotic nitrogen-fixing bacterium Sinorhizobium meliloti possesses the Sin quorum-sensing system based on N-acyl homoserine lactones (AHLs) as signal molecules. The Sin system consists of SinI,...

Perceiving molecular evolution processes in Escherichia coli by comprehensive metabolite and gene expression profiling

Vijayendran, Chandran, Barsch, Aiko, Friehs, Karl, Niehaus, Karsten, Becker, Anke, Flaschel, Erwin

Transcript and metabolite abundance changes were analyzed in evolved and ancestor strains of Escherichia coli in three different evolutionary conditions

Transcript Profiling Reveals New Insights into the Acclimation of the Mesophilic Fresh-Water Cyanobacterium Synechococcus elongatus PCC 7942 to Iron Starvation1[W]

Nodop, Anke, Pietsch, Daniel, Höcker, Ralf, Becker, Anke, Pistorius, Elfriede K., Forchhammer, Karl, ...

The regulatory network for acclimation of the obligate photoautotrophic fresh water cyanobacterium Synechococcus elongatus PCC 7942 to iron (Fe) limitation was studied by transcript profiling with an...