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Genistein-Dependent Regulatory Circuits in Bradyrhizobium japonicum

  • K. Lang
  • A. Lindemann
  • F. Hauser
  • H. Hennecke
  • S. Zehner
  • M. Göttfert
Conference paper
Part of the Current Plant Science and Biotechnology in Agriculture book series (PSBA, volume 42)

The B. japonicum genome consists of a single circular chromosome (Kaneko et al., 2002). The regulation of genes directly involved in nodulation (nod) is well studied (Figure 1; Loh and Stacey, 2003). Genistein is a potent signal molecule of soybean. In B. japonicum, two regulatory systems are required for efficient symbiosis. NodD1, a LysR-type regulator, is a well-conserved activator protein in rhizobia. NodVW, belonging to the two-component regulatory family, are essential for the nodulation of several host plants (Göttfert et al., 1990). nwsB, if overexpressed, could repress the Nod phenotype of the nodW (Grob et al., 1993). nwsB is also involved in nodulation-density-dependent repression of nod genes (Loh et al., 2002). NolA and NodD2 mediate this effect (Loh et al., 2001).

Keywords

Biological Nitrogen Fixation BRADYRHIZOBIUM JAPONICUM Construct Reporter Gene Soybean Nodule Factor Synthesis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Springer Science + Business Media B.V. 2008

Authors and Affiliations

  • K. Lang
    • 1
  • A. Lindemann
    • 2
  • F. Hauser
    • 2
  • H. Hennecke
    • 2
  • S. Zehner
    • 1
  • M. Göttfert
    • 1
  1. 1.Institute of GeneticsTechnical University DresdenDresdenGermany
  2. 2.Institute of MicrobiologyETHZZürichSwitzerland

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