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Microbes Infect. 2004 Nov;6(13):1235-9.

Why are most rhizobia beneficial to their plant hosts, rather than parasitic?

Author information

  • 1Agronomy and Range Science, University of California, 1 Shields Avenue, Davis, CA 95616, USA. rfdenison@ucdavis.edu

Abstract

Multiple strains per plant and root-to-root (not seed-borne) transmission should favor rhizobia that invest in their own reproduction, rather than symbiotic N2 fixation, as analogous factors may favor pathogen virulence. But legumes can select for greater mutualism, controlling nodule O2 supply and reducing reproduction of rhizobia that fix less N2.

PMID:
15488744
DOI:
10.1016/j.micinf.2004.08.005
[PubMed - indexed for MEDLINE]
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