植物研究2009，Vol.29Issue(4)：428-432,5.
镉胁迫对旱柳光合作用和内肽酶变化的影响
Influences of Cadmium Stress on Photosynthesis and Endopeptidase Activities in Salix matsudana
摘要
Abstract
Salix matsudana was grown in hydroponic culture for 14 d with CdCl_2(0, 5, 25, 50 μmol · L~(-1)) , the effects of Cd on photosynthetic performance and endopetidase activites of S. matsudana were investigated through analyzing chlorophyll, Rubisco, PEPC free amino acid and endopetidase. Total chlorophyll, chlorophyll a and b were decreased in Cd-treated plant, Rubisco activity was reduced with Cd levels in the medium, PEPC activity in roots and leaves showed an decline under Cd treatment, free amino acids in roots remained no significant change, but free amino acids in leaves were increased depending upon concentration of Cd; endopeptidase in roots was hindered at different dose of Cd, however, endopetidase in leaves increased at higher dose of Cd compared to control. The results showed that the effects of Cd on photosynthesis of S. matsudana were related to decrease in photosynthetic pigments, up-regulation of endopeptidase in leaves and inhibition of CO_2 carboxylation.关键词
旱柳/镉/光合作用/游离氨基酸/内肽酶Key words
Salix matsudana Koidz./ Cd/ photosynthesis/ free amino acid/ endopeptidase分类
农业科技引用本文复制引用
杨卫东,陈益泰,王树凤..镉胁迫对旱柳光合作用和内肽酶变化的影响[J].植物研究,2009,29(4):428-432,5.基金项目
浙江省科技厅重大项目(2006C12065)资助 （2006C12065）
