Exogenous application of gibberellic acid and ascorbic acid improved tolerance of okra seedlings to NaCl stress

• Autorzy: Wang Y.-H. , Zhang G. , Chen Y. , Gao J. , Sun Y.-R. , Sun M.-F. , Chen J.-P.
• Języki publikacji: EN

Abstrakty

EN

Accumulation of salts in soils has become a serious environmental threat for plant growth and causes considerable loss in yield. Okra Abelmoschus esculentus L. is an important crop and sensitive to saline stress. In the present study, to explore methods for growing okra in salty area, exogenous gibberellic acid (GA₃) and ascorbic acid (AsA) were foliage applied on okra seedling under NaCl stress. The results showed that treatment with 100 mM NaCl decreased shoot length, root length, fresh weight, dry weight, contents of chlorophyll pigments and nutrient elements, enhanced levels of electrolyte leakage, H₂O₂, lipid peroxidation and activities of antioxidant enzymes. Treatments with 0.1 mM GA₃ and/or 0.1 mM AsA could alleviated harmful effects of saline stress on okra seedlings by improving growth indicators, increasing contents of chlorophyll and carotenoids, stimulating activities of antioxidant enzymes and decreasing electrolyte leakage, H₂O₂ content and lipid peroxidation. Moreover, concentrations of K, Ca, Mg and Fe in leaves and roots as well as levels of osmo-protectants (proline and soluble protein) increased in response to treatment with GA₃ + AsA in NaCl-stressed okra seedling. Overall, foliar application of GA₃ and/or AsA demonstrated benefits to okra seedlings in salty environments. Combined application of GA₃ and AsA was more effective than sole use of GA₃ or AsA alone.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2019
• Tom: 41
• Numer: 06
• Opis fizyczny: Article 93 [10p.], fig.,ref.

Twórcy

autor

Wang Y.-H.

• Institute of Agricultural Sciences of Jiangsu Coastal Area, Observation and Experimental Station of Saline Land of Costal Area, Ministry of Agriculture, Yancheng, China

autor

Zhang G.

• Shenzhen GenProMetab Biotechnology Company Limited, Shenzhen, China

autor

Chen Y.

• Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, Yangzhou University, Yangzhou, China

autor

Gao J.

• Institute of Agricultural Sciences of Jiangsu Coastal Area, Observation and Experimental Station of Saline Land of Costal Area, Ministry of Agriculture, Yancheng, China

autor

Sun Y.-R.

• Institute of Agricultural Sciences of Jiangsu Coastal Area, Observation and Experimental Station of Saline Land of Costal Area, Ministry of Agriculture, Yancheng, China

autor

Sun M.-F.

• Institute of Agricultural Sciences of Jiangsu Coastal Area, Observation and Experimental Station of Saline Land of Costal Area, Ministry of Agriculture, Yancheng, China

autor

Chen J.-P.

• Institute of Agricultural Sciences of Jiangsu Coastal Area, Observation and Experimental Station of Saline Land of Costal Area, Ministry of Agriculture, Yancheng, China

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Identyfikatory

DOI

10.1007/s11738-019-2869-y