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D-Alanine Metabolism in M. loti

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Rhizobium, Bradyrhizobium, Mesorhizobium, Sinorhizobium and Azorhizobium-known as Rhizobia-are Gram-negative, nitrogen-fixing bacteria of agronomic importance because they perform nitrogen-fixing symbiosis with leguminous plants. Nodule formation and the subsequent nitrogen-fixation result from a series of interactions controlled by the exchange of molecular signals between symbiotic bacteria and host plants followed by expression of genes from both symbiotic partners. Mesorhizobium loti is able to form determinant-type globular nodules and perform nitrogen-fixation on several Lotus species (Ref.1 & 2). The cell wall of these Gram-negative bacteria constitutes a multifaceted fabric that is essential for survival, shape, and integrity. Macromolecular assemblies of cross-linked peptidoglycan, polyanionic TAs (Teichoic Acids), and surface proteins function within this envelope. A key step in peptidoglycan layer assembly and deposition in [...]


1.Symbiotic phenotypes and translocated effector proteins of the Mesorhizobium loti strain R7A VirB/D4 type IV secretion system.
Hubber A, Vergunst AC, Sullivan JT, Hooykaas PJ, Ronson CW.
Mol Microbiol. 2004 Oct; 54(2):561-74.
2.The genome sequence of an anaerobic aromatic-degrading denitrifying bacterium, strain EbN1.
Rabus R, Kube M, Heider J, Beck A, Heitmann K, Widdel F, Reinhardt R.
Arch Microbiol. 2005 Jan; 183(1):27-36. Epub 2004 Nov 13.
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