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Molybdenum Affects Photosynthesis and Ionic Homeostasis of Chinese Cabbage under Salinity Stress

文献类型： 外文期刊

作者： Zhang, Mu 2 ; Hu, Chengxiao 1 ; Sun, Xuecheng 1 ; Zhao, Xiaohu 1 ; Tan, Qiling 1 ; Zhang, Ying 1 ; Li, Na 3 ;

作者机构： 1.Huazhong Agr Univ, Microelement Res Ctr, Wuhan 430070, Peoples R China

2.Guangdong Acad Agr Sci, Inst Agr Resources & Environm, Guangzhou, Guangdong, Peoples R China

3.Henan Acad Agr Sci, Res Ctr Agr Qual Stand & Testing Tech, Zhengzhou, Peoples R China

关键词： ionic homeostasis;salt stress;Chinese cabbage (Brassica campestris L. ssp. Pekinensis);photosynthesis;molybdenum

期刊名称：COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS （ 影响因子：1.327； 五年影响因子：1.315 ）

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收录情况： SCI

摘要： A pot trial was conducted to clarify the effects of molybdenum (Mo) on photosynthesis and ionic homeostasis of Chinese cabbage under salinity stress. Mo was applied at three levels (0, 0.15, 0.3 mg kg(-1)). Ten days after sowing, 500 ml of 0.8% of NaCl solution was added to half of the plants for each treatment every 10th day for three consecutive times. The results revealed that fresh weight was significantly increased by application of Mo under salt stress; contents of chlorophyll a, chlorophyll b, carotene, and total chlorophyll were all raised by application of Mo; photosynthesis rate was enhanced by nonstomatal factors by application of Mo; and the ratios of potassium/sodium ions (K+/Na+), calcium/sodium ions (Ca2+/Na+), and magnesium/sodium ions (Mg2+/Na+) were all increased by application of Mo under salt stress. The study suggests that the application of Mo enhances salinity stress tolerance in Chinese cabbage by increasing the photosynthesis rate and the ionic homeostasis adjustment.

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