Enhancement of drought stress tolerance in crops by plant growth promoting rhizobacteria.
Microbiol Res
; 184: 13-24, 2016 Mar.
Article
em En
| MEDLINE
| ID: mdl-26856449
ABSTRACT
Drought is one of the major constraints on agricultural productivity worldwide and is likely to further increase. Several adaptations and mitigation strategies are required to cope with drought stress. Plant growth promoting rhizobacteria (PGPR) could play a significant role in alleviation of drought stress in plants. These beneficial microorganisms colonize the rhizosphere/endo-rhizosphere of plants and impart drought tolerance by producing exopolysaccharides (EPS), phytohormones, 1-aminocyclopropane- 1-carboxylate (ACC) deaminase, volatile compounds, inducing accumulation of osmolytes, antioxidants, upregulation or down regulation of stress responsive genes and alteration in root morphology in acquisition of drought tolerance. The term Induced Systemic Tolerance (IST) was coined for physical and chemical changes induced by microorganisms in plants which results in enhanced tolerance to drought stresses. In the present review we elaborate on the role of PGPR in helping plants to cope with drought stress.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Estresse Fisiológico
/
Substâncias de Crescimento
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Raízes de Plantas
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Produtos Agrícolas
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Secas
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Resistência à Doença
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Desenvolvimento Vegetal
Idioma:
En
Revista:
Microbiol Res
Assunto da revista:
MICROBIOLOGIA
/
SAUDE AMBIENTAL
Ano de publicação:
2016
Tipo de documento:
Article
País de afiliação:
Índia
País de publicação:
ALEMANHA
/
ALEMANIA
/
DE
/
DEUSTCHLAND
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GERMANY