首页 | 本学科首页   官方微博 | 高级检索  
     检索      

硅对盐胁迫下杨树幼苗生长和膜脂过氧化的影响
引用本文:沈艳华,徐锡增,方升佐,杨万霞,尚旭岚.硅对盐胁迫下杨树幼苗生长和膜脂过氧化的影响[J].福建林学院学报,2009,29(1).
作者姓名:沈艳华  徐锡增  方升佐  杨万霞  尚旭岚
作者单位:南京林业大学森林资源与环境学院,江苏,南京,210037
基金项目:国家科技支撑项目,高等学校博士学科点专项科研基金 
摘    要:研究了杨树南林-95杨(Populus×euram ericana cv. NL-95)在不同盐胁迫下加硅处理对幼苗生长和活性氧代谢的影响。结果表明:未加硅情况下,随着盐浓度增加和胁迫时间的延长,幼苗生长减缓,叶细胞的膜脂过氧化程度明显加剧,叶片丙二醛(MDA)含量显著增加,细胞膜透性变大,而过氧化物酶(POD)、过氧化氢酶(CAT)的活性均有不同程度的下降。盐胁迫下施硅处理缓解了盐胁迫对杨树幼苗生长的抑制作用,维持了杨树叶片细胞膜的稳定性和完整性,幼苗叶MDA含量降低,POD和CAT活性提高。笔者认为盐胁迫下施硅在一定程度上缓解了盐分对杨树的毒害胁迫作用。

关 键 词:  丙二醛  过氧化物酶  过氧化氢酶  杨树  盐胁迫

Effect of silicon on growth and membrane lipid peroxidation of poplar seedlings under salt stress
SHEN Yan-hua,XU Xi-zeng,FANG Sheng-zuo,YANG Wan-xia,SHANG Xu-lan.Effect of silicon on growth and membrane lipid peroxidation of poplar seedlings under salt stress[J].Journal of Fujian College of Forestry,2009,29(1).
Authors:SHEN Yan-hua  XU Xi-zeng  FANG Sheng-zuo  YANG Wan-xia  SHANG Xu-lan
Institution:College of Forestry Resource Environment;Nanjing Forestry University;Nanjing;Jiangsu 210037;China
Abstract:The effects of silicon on growth and active oxygen metabolism of poplar seedling under different salt stress were studied.The results showed that with the increasing external NaCl concentration and prolonging treatment time,both the growth of poplar seedling and the activities of peroxidase(POD) and catalase(CAT) were declined,while the degree of membrane lipid peroxidation in leaf cells and the content of malondaldhyde(MDA) and relative permeability(RP) of plasma membrane were dramatically increased.Howeve...
Keywords:silicon  malondaldhyde  peroxidase  catalase  poplar  salt stress  
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号