Biological nitrogen fixation in non-legume plants.
Ann Bot
; 111(5): 743-67, 2013 May.
Article
em En
| MEDLINE
| ID: mdl-23478942
ABSTRACT
BACKGROUND:
Nitrogen is an essential nutrient in plant growth. The ability of a plant to supply all or part of its requirements from biological nitrogen fixation (BNF) thanks to interactions with endosymbiotic, associative and endophytic symbionts, confers a great competitive advantage over non-nitrogen-fixing plants. SCOPE Because BNF in legumes is well documented, this review focuses on BNF in non-legume plants. Despite the phylogenic and ecological diversity among diazotrophic bacteria and their hosts, tightly regulated communication is always necessary between the microorganisms and the host plant to achieve a successful interaction. Ongoing research efforts to improve knowledge of the molecular mechanisms underlying these original relationships and some common strategies leading to a successful relationship between the nitrogen-fixing microorganisms and their hosts are presented.CONCLUSIONS:
Understanding the molecular mechanism of BNF outside the legume-rhizobium symbiosis could have important agronomic implications and enable the use of N-fertilizers to be reduced or even avoided. Indeed, in the short term, improved understanding could lead to more sustainable exploitation of the biodiversity of nitrogen-fixing organisms and, in the longer term, to the transfer of endosymbiotic nitrogen-fixation capacities to major non-legume crops.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Produtos Agrícolas
/
Fixação de Nitrogênio
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article
País de afiliação:
França