Effects of Exogenous Proline on Nitrate Reduction in Melon Seedlings under Salt Stress
YAN Zhi-Ming1,2, SUN Jin1, GUO Shi-Rong1
1. College of Horticulture, Nanjing Agricultural University /Key Laboratory of Southern Vegetable Crop Genetic Improvement, Ministry of Agriculture, Nanjing 210095, China;2. Jiangsu Polytechnic of Agriculture and Forestry, Jurong, Jiangsu 212400, China
Abstract：Nutrient solution hydroponics was adopted to study the effects of exogenous proline on nitrogen reduction in the leaves and roots of "xuemei" melon(Cucumis melo L.) seedlings under NaCl stress.The results shown that:(1)Salt stress increased the NH4+-N and soluble protein content in leaves and roots of melon seedlings;and decreased NO3--N content and nitrate reductase(NR) activity;and(2)Exogenous proline increased NO3--N and soluble protein content in leaves and roots of melon seedlings under salt stress;decreased NH4+-N content;and increased NR activities.These results indicated that exogenous proline could ease injury suffer when melon seedling experience salt stress relying on adjusting NR activity and nitrogen compounds contents.
颜志明;孙锦;郭世荣. 外源脯氨酸对盐胁迫下甜瓜幼苗硝酸还原的影响[J]. 植物科学学报, 2011, 29(1): 118-123.
YAN Zhi-Ming;SUN Jin;GUO Shi-Rong. Effects of Exogenous Proline on Nitrate Reduction in Melon Seedlings under Salt Stress. , 2011, 29(1): 118-123.
2011, Vol. 29 
