Regulation of 'nif' Gene Expression and Nitrogen Metabolism in 'Azospirillum'

Title
Regulation of 'nif' Gene Expression and Nitrogen Metabolism in 'Azospirillum'
Publication Date
1997
Author(s)
Elmerich, C
de Zamaroczy, M
Arsene, F
Pereg, Lily
Paquelin, A
Kaminski, A
Type of document
Journal Article
Language
en
Entity Type
Publication
Publisher
Elsevier Ltd
Place of publication
United Kingdom
DOI
10.1016/S0038-0717(96)00228-3
UNE publication id
une:13310
Abstract
The 'Azospirillum' genus comprises nitrogen-fixing bacteria which have been isolated from the roots of numerous grasses, including cereals, sugar cane and forage grasses. Among the five species known, 'Azospirillum brasilense' is the best documented in terms of genetics and regulation of nitrogen fixation and ammonia assimilation. Several key regulatory and structural genes have been characterized, including 'nifA', 'ntrBC', 'glnA', 'glnB' and 'rpoN'. Regulation of their expression has been studied at the free-living state and in association with wheat. A model of regulation is reported and the challenge of engineering nitrogen-fixing associations is also discussed.
Link
Citation
Soil Biology & Biochemistry, 29(5/6), p. 847-852
ISSN
1879-3428
0038-0717
Start page
847
End page
852

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