Journal
JOURNAL OF BIOTECHNOLOGY
Volume 106, Issue 2-3, Pages 169-178Publisher
ELSEVIER
DOI: 10.1016/j.jbiotec.2003.07.010
Keywords
nitrogen-fixing grass endophytes; Kallar grass; root colonization; diazosomes
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The availability of nitrogen often limits plant growth in terrestrial ecosystems. The only biological reaction counterbalancing the loss of N from soils or ecosystems is biological nitrogen fixation, the enzymatic reduction of N-2 to ammonia. Some gramineous crops such as certain Brazilian sugar cane cultivars or Kallar grass can derive a substantial part of the plant nitrogen from biological nitrogen fixation. Our research on grass-associated diazotrophs focuses on endophytic bacteria, microorganisms that multiply and spread inside plants without causing damage of the host plants or conferring an ecological threat to the plant. This review summarizes the current knowledge on the diazotrophic endophyte Azoarcus sp. BH72, which is capable of colonizing the interior of rice roots, one of the globally most important crops. (C) 2003 Elsevier B.V. All rights reserved.
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