The genistein stimulon of Bradyrhizobium japonicum.

Molecular Genetics and Genomics : MGG
Kathrin LangM Göttfert

Abstract

An initializing step in the rhizobia-legume symbiosis is the secretion of flavonoids by plants that leads to the expression of nodulation genes in rhizobia. Here we report the genome-wide transcriptional response of Bradyrhizobium japonicum to genistein, an isoflavone secreted by soybean. About 100 genes were induced in the wild type. This included all nod box-associated genes, the flagellar cluster and several genes that are likely to be involved in transport processes. To elucidate the role of known regulators, we analysed mutant strains. This revealed that the two-component response regulator NodW is essential for induction of almost all genistein-inducible genes, with the exception of 8 genes. The phenotype of the nodW mutant could be partially suppressed by overexpression of NwsB, which is also a two-component response regulator. These data indicate that genistein has a much broader function than mere induction of nod genes.

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Citations

Dec 17, 2009·Functional & Integrative Genomics·Luciana Ruano OliveiraMariangela Hungria
Jul 29, 2011·Genome Biology and Evolution·Florent LassalleXavier Nesme
Sep 2, 2011·Molecular Plant-microbe Interactions : MPMI·S B StockwellM L Guerinot
Jul 12, 2008·Molecular Plant-microbe Interactions : MPMI·Susanne ZehnerMichael Göttfert
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Dec 20, 2008·Journal of Biotechnology·Jana HempelThomas Patschkowski
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Nov 25, 2011·FEMS Microbiology Letters·Christos T FotiadisAnastasia P Tampakaki
May 24, 2016·International Journal of Molecular Sciences·Francisco J López-BaenaJosé M Vinardell
Apr 7, 2010·Molecular Plant-microbe Interactions : MPMI·Min WeiTakuji Ohwada
Nov 28, 2017·Molecular Plant-microbe Interactions : MPMI·Yuan Hui LiuWen Feng Chen
Feb 9, 2017·Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz·Leane LehmannSabine E Kulling

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