l 处理对小麦根造成了氧化损伤, 并且抑制了小麦根的生长。外源 Put 处理的小麦根中 TBARS 含量比盐单独处理时减少了 15.8%, 电解质渗透率也降低了 5% 左右。进一步研究发现 Put 处理减轻了小麦根中 150mMNaCl 诱导的膜脂过氧化程度,主要是由于外源 Put 处理使小麦根中抗氧化酶(SOD 、 APX 、 POD) 的活性升高, 还原型谷胱甘肽(GSH) 的含量升高; 渗透调节物质脯氨酸和可溶性糖在细胞中积累;Na~+/K~+ 比值降低;O_2 的产生减少。... 【英文摘要】 Salt stress is one of the most serious factors limiting the productivity ofa gricultural crops.Polyamines play an important role in the plant response t o adverse environmental conditions.To clarify the involvement of exogenou s Put in the salt stress response,the content of TBARS,electrolyte leakag e,the accumulation and scavenging of ROS,Na~+/K~+ ratio,and the activiti es of DAO and PAO were investigated in wheat(T.aestivm L.)roots which t reated with exogenous Put under salt stress.The results demonstra... 【 DOI 】 CNKI:CDMD:2.2008.163069
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