Symbiotic hydrogenase activity in Bradyrhizobium sp. (Vigna) increases nitrogen content in Vigna unguiculata plants

Appl Environ Microbiol. 2005 Nov;71(11):7536-8. doi: 10.1128/AEM.71.11.7536-7538.2005.

Abstract

Bradyrhizobium sp. (Lupinus) and Bradyrhizobium sp. (Vigna) mutants in which hydrogenase (hup) activity was affected were constructed and analyzed. Vigna unguiculata plants inoculated with the Bradyrhizobium sp. (Vigna) hup mutant showed reduced nitrogenase activity and also a significant decrease in nitrogen content, suggesting a relevant contribution of hydrogenase activity to plant yield.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bacterial Proteins / genetics
  • Bacterial Proteins / metabolism
  • Bradyrhizobium / enzymology*
  • Bradyrhizobium / genetics
  • Fabaceae / metabolism
  • Fabaceae / microbiology*
  • Gene Expression Regulation
  • Hydrogenase / genetics
  • Hydrogenase / metabolism*
  • Mutation
  • Nitrogen / metabolism*
  • Nitrogen Fixation
  • Symbiosis*
  • Up-Regulation*

Substances

  • Bacterial Proteins
  • Hydrogenase
  • Nitrogen