Inoculation response of mycorrhizas on morphology and physiological behaviour of trifoliate orange (Poncirus trifoliata) roots under salt stress

文献类型： 外文期刊

第一作者： Wang, Peng

作者： Wang, Peng;Srivastava, A. K.;Zhang, Yi-Can;Wu, Qiang-Sheng;Srivastava, A. K.;Wu, Qiang-Sheng

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关键词： Citrus;Mycorrhiza;Polyamine;Salt stress;SOD

期刊名称：INDIAN JOURNAL OF AGRICULTURAL SCIENCES （ 影响因子：0.371； 五年影响因子：0.427 ）

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收录情况： SCI

摘要： Citrus is highly sensitive to salt stress, and little efforts have been successful microbiologically to mitigate such abiotic stress. In this background, trifoliate orange [Poncirus trifoliata (L.) Raf.] seedlings were inoculated with Diversisporaversiformis and exposed to 100 mM NaCl treatment for 85 days under controlled conditions. The NaCl application, though, strongly inhibited root mycorrhizal colonization in seedlings, but mycorrhizal inoculation considerably increased the root projected area and number of second- and third-order lateral roots under 100 mMNaCl treatment. Mycorrhizal-inoculated seedlings showed significantly higher soluble protein concentration, ornithine decarboxylase, arginine decarboxylase, and superoxide dismutase activity in leaves and roots, irrespective of NaCl concentration. While mycorrhizal seedlings displayed significantly lower polyamine oxidase activity and diamine oxidase activity in leaves and roots, irrespective of NaCl concentration. These results, thus, suggested that mycorrhizal plants were physiologically activated through mycorrhizal inoculation to downplay the adverse effect of salt stress.

分类号： S

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