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《Journal of Shihezi University(Natural Science)》 2017-04
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Effect of exogenous NADPH on growth and physiological indexes of stress resistance of processing tomato seedlings under salt stress

Chen Xianjun;Shen Bingru;Diao Ming;Sun Yanyun;Liu Huiying;Department of Horticulture,College of Agronomy,Shihezi University;Xinjiang Production and Construction Corps Key Laboratory of Special Fruits and Vegetables Cultivation Physiology and Germplasm Resources Utilization;  
By spraying tomato leaves with 5, 10 and 15 μmol/L NADPH(reduced form of nicotinamide-adenine dinucleotide phosphate) respectively, a hydroponic experiment was conducted to investigate the effects of exogenous NADPH on the growth and physiology indexes of resistance stress of the processing tomato(Solanum lycopersicum cv. Ligeer 87-5) seedlings under salt stress. The results showed that the application of three different concentration of NADPH could improve the growth characters of tomato seedlings under NaCl treatment process, and improve the root activity and peroxidase(POD), superoxide dismutase(SOD),catase(CAT) and glutathione peroxidase(GPX) activity. Especially under NaCl stress, the effect of spraying 10 μmol/L NADPH was best. These results indicated that exogenous NADPH alleviated salt-induced growth inhibition and enhanced salt-tolerance by promoting the osmotic adjustment capacity and the defense ability of antioxidant enzymes system, which could decrease membrane lipid peroxidation and protect the integrity of membrane structure in tomato seedlings under NaCl stress.
【Fund】: 国家自然科学基金项目(31360478 31160391);; 国家星火重点项目(2015GA891008);; 兵团国际合作项目(2014BC002)
【CateGory Index】: S641.2
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