Exogenously applied poly-γ-glutamic acid alleviates salt stress in wheat seedlings by modulating ion balance and the antioxidant system.
Environ Sci Pollut Res Int
; 24(7): 6592-6598, 2017 Mar.
Article
em En
| MEDLINE
| ID: mdl-28078521
ABSTRACT
Salt stress is a main abiotic stress that limits agricultural productivity in many parts of the world. To investigate whether poly-γ-glutamic acid (γ-PGA) can alleviate the negative effects of salt stress on wheat, a foliar application of 400 mg/L γ-PGA was applied to wheat seedlings, which were then subjected to 150 mM NaCl. Our results showed that after application of γ-PGA, the plant height, the plant weight, and the antioxidant enzymes including superoxide dismutase, peroxidase, and catalase were significantly increased compared with the treatment of 150 mM NaCl alone. Meanwhile, γ-PGA application also resulted in high accumulation of K+ and decreased storage of Na+ in wheat leaves. These results suggest that γ-PGA treatment may improve salt tolerance of wheat by diminishing ionic imbalances and enhancing antioxidant capacity. Our results indicate that exogenous γ-PGA could alleviate the damage caused by salt stress.
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Base de dados:
MEDLINE
Assunto principal:
Ácido Poliglutâmico
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Solo
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Estresse Fisiológico
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Triticum
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Tolerância ao Sal
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article