摘要
低浓度的胆固醇处理水稻种子 ,可增强冷害水稻幼苗的超氧化物歧化酶 (SOD)和过氧化氢酶 (CAT)活性 ,降低丙二醛 (MDA)含量 ,提高可溶性蛋白总量中的热稳定蛋白含量 ,但过氧化物酶 (POD)活性变化不明显。亚细胞组分测定表明 ,ATP主要存在于叶绿体和线粒体中 ,胆固醇对低温下叶绿体的保护作用尤为明显。
Under low temperature conditions, seeds of hybrid rice Ⅱyou 6078 were treated with cholesterol at low concentrations. Results showed that cholesterol enhanced SOD and CAT activities, raised heat stable protein content and decreased MDA content. There was no obvious change in POD activity. ATP was mainly located in chloroplastid and mitochondria. The protection to chloroplastid of cholesterol was more effective than that to mitochondria and cytosol.
出处
《中国水稻科学》
CAS
CSCD
北大核心
2002年第3期285-287,共3页
Chinese Journal of Rice Science
基金
国家自然科学基金资助项目 (3 9670 44 1)
农业部"九五"重点项目 (95农 -17-0 1)
重庆市应用基础研究资助项目 [渝科委计 (1998) 2 8]
