生态学杂志2012，Vol.31Issue(5)：1064-1069,6.
大气CO2浓度升高对毛竹叶片膜脂过氧化和抗氧化系统的影响
Effects of elevated atmospheric CO2 on membrane lipid peroxidation and anti-oxidation system of Phyllostachys edulis leaves
摘要
Abstract
In order to supply theoretical basis for the management of moso bamboo (Phyllostachys edulis) under the background of climate change, open-top chambers (OTCs) were employed to study the physiological responses of P. edulis to elevated atmospheric CO2 concentration. Three treatments were installed, i. e. , ambient 350 μmol CO2 · mol-1 (CK), 500 μmol CO2 · mol-1 (T1) , and 700 μmol CO2 · mol-1(T2), with the leaf photosynthetic pigments, membrane lipid peroxidation, and anti-oxidation system determined. There were no significant differences in the test physiological parameters between treatments CK and T1 in the initial 30 days, except that the CAT activity in treatment T1 had a significant decrease. With the increasing time of treating with 500 μmol CO2 · mol-1, the effects on the membrane lipid peroxidation and anti-oxidation system appeared gradually, and after 90 days, the test physiological indicators except soluble sugar content changed significantly. In treatment T2, the membrane lipid peroxidation and anti-oxidation system were more affected than in treatment T1. In the initial 30 days, the soluble sugar content and the anti-oxidation enzyme activities changed obviously; and after 90 days, all the test physiological parameters had significant change. It was concluded that elevated atmospheric CO2 concentration could enhance the antioxidant capacity of P. edulis to a certain extent, but the excessive accumulation of photosynthetic products could induce the carbohydrate source-pool imbalance and the feedback inhibition of Rubisco regeneration.关键词
毛竹/CO2浓度/光合色素/膜脂过氧化/抗氧化系统Key words
Phyllostachys edulis/ CO2 concentration/ photosynthetic pigment/ membrane lipid peroxidation/ anti-oxidation system.分类
生物科学引用本文复制引用
庄明浩,李迎春,郭子武,杨清平,李应,樊艳荣,陈双林..大气CO2浓度升高对毛竹叶片膜脂过氧化和抗氧化系统的影响[J].生态学杂志,2012,31(5):1064-1069,6.基金项目
国家公益性行业(林业)科研专项(201004008)、中央级公益性科研院所基本科研业务费专项资金(RISF6915)和浙江省省院合作项目(2010SY01)资助. （林业）
