摘要
在光照和黑暗条件下 ,对低温胁迫玉米幼苗叶片中超氧自由基 (O2 —· )产生速率、超氧化物歧化酶 (SOD)、过氧化氢酶 (CAT)、过氧化物酶 (POD)动态变化过程的研究结果表明 ,不同强度低温胁迫后 ,O2—·产生速率增加 ;保护酶SOD、CAT活性下降 ,POD活性升高。同一低温胁迫下光照处理后的O2—·产生速率、SOD、CAT、POD活性与黑暗处理相比差异达到极显著水平。
Changes of activated oxygen O 2 —·,activity of enzymes involving cell defense in leaves of maize seedling after effects of low temperature and light were studied. The results showed that the generation rate of activated oxygen O 2 —·increased; the activities of SOD and CAT decreased and POD increased under different low temperature stress; many notable distinguishes in facts such as generation of activated oxygen O 2 —·and changes of the activities of SOD, CAT, POD had been found between light and dark after the same low temperature stress.
出处
《植物研究》
CAS
CSCD
北大核心
2004年第4期456-459,共4页
Bulletin of Botanical Research
