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The Rhizobium etli argC gene is essential for Arginine biosynthesis and nodulation of Phaseolus vulgaris (Articolo in rivista)

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The Rhizobium etli argC gene is essential for Arginine biosynthesis and nodulation of Phaseolus vulgaris (Articolo in rivista) (literal)

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Ferraioli S, Taté R, Caputo E, Lamberti A, Riccio A, Patriarca EJ (2001)
The Rhizobium etli argC gene is essential for Arginine biosynthesis and nodulation of Phaseolus vulgaris
in Molecular plant-microbe interactions
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The Rhizobium etli argC gene is essential for Arginine biosynthesis and nodulation of Phaseolus vulgaris (literal)

Abstract

A Tn5-induced mutant strain (CTNUX5) of Rhizobium etli unable to grow with ammonium as the sole nitrogen source was isolated and characterized. Sequence analysis showed that Tn5 is inserted into an argC-homologous gene. Unlike its wild-type parent (strain CE3), the mutant strain CTNUX5 had an absolute dependency on arginine to grow. The argC gene was cloned from the wild-type strain CE3, and the resulting plasmid, pAR207, after transformation was shown to relieve the arginine auxotrophy of strain CTNUX5. Unlike strain CE3 or CTNUX5-pAR207, strain CTNUX5 showed undetectable levels of N-acetyl-gamma-glutamylphosphate reductase activity. Unless arginine was added to the growth medium, strain CTNUX5 was unable to produce flavonoid-inducible lipo-chitin oligosaccharides (nodulation factors) and to induce nodules or nodulelike structures on the roots of Phaseolus vulgaris. (literal)

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