生态学杂志2009，Vol.28Issue(11)：2208-2212,5.
镍对高冰草幼苗生长及活性氧代谢的影响
Effects of Ni stress on Agropyron elongatum seedlings growth and reactive oxygen species metabolism
摘要
Abstract
Agropyron elongatum seedlings were exposed to different concentration Ni to study their growth and the changes in MDA and soluble protein contents and SOD, POD and CAT ac-tivities in their shoots and roots, and the photosynthetic pigment content in their leaves. Low con-centration (10 μmol·L~(-1)) Ni had no significant inhibitory effects on the seedlings growth, but the growth indices decreased significantly with increasing Ni concentration, being more markedly for roots than for shoots. The leaf photosynthetic pigment content had a decreasing trend with in-creasing Ni concentration, while the MDA content in shoots and roots had significant positive cor-relation with Ni concentration. The soluble protein content in roots increased with increasing Ni concentration. Under low concentration (10μmol·L~(-1)) Ni, the SOD, POD and CAT activities all increased, and the protective enzyme system was well-balanced. When the Ni concentration was increasing, the three enzyme activities were inhibited to different extents, and the balance of protective enzyme system was broken.关键词
高冰草/镍/光合色素/丙二醛/抗氧化酶Key words
Agropyron elongatum/ nickel/ photosynthetic pigment/ malonic dialdehyde (MDA) / antioxidative enzyme分类
农业科技引用本文复制引用
鲁艳,何明珠,赵昕,刘玉冰,谭会娟,李新荣..镍对高冰草幼苗生长及活性氧代谢的影响[J].生态学杂志,2009,28(11):2208-2212,5.基金项目
国家科技支撑计划项目(2007BAD46B03)和中国科学院"西部之光"计划资助项目. （2007BAD46B03）
