Stable symbiotic nitrogen fixation under water-deficit field conditions by a stress-tolerant alfalfa microsymbiont and its complete genome sequence : Short communication

We here characterized the stress-tolerant alfalfa microsymbiont Sinorhizobium meliloti B401. B401-treated plants showed high nitrogen fixation rates under humid and semiarid environments. The production of glycine betaine in isolated bacteroids positively correlated with low precipitation levels, suggesting that this compound acts as a critical osmoprotectant under field conditions. Genome analysis revealed that strain B401 contains alternative pathways for the biosynthesis and uptake of glycine betaine and its precursors. Such genomic information will offer substantial insight into the environmental physiology of this biotechnologically valuable nitrogen-fixing bacterium.

Bibliographic Details

Main Authors:	Jozefkowicz, Cintia, Brambilla, Silvina Maricel, Frare, Romina Alejandra, Stritzler, Margarita, Piccinetti, Carlos Fabian, Puente, Mariana Laura, Berini, Carolina Andrea, Reyes Perez, Pedro Jose, Soto, Gabriela Cinthia, Ayub, Nicolás Daniel
Format:	info:eu-repo/semantics/article biblioteca
Language:	eng
Published:	2017-12
Subjects:	Medicago Sativa, Fijación del Nitrógeno, Déficit de Humedad en el Suelo, Simbiontico, Secuencia Nucleotídica, Nitrogen Fixation, Soil Water Deficit, Symbionts, Nucleotide Sequence, Alfalfa, Secuencia Genómica,
Online Access:	http://hdl.handle.net/20.500.12123/1974 https://www.sciencedirect.com/science/article/pii/S0168165617317029 https://doi.org/10.1016/j.jbiotec.2017.10.007
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