首页 | 本学科首页   官方微博 | 高级检索  
   检索      

低温下钙对黄瓜幼苗抗氧化酶活性及POD同工酶谱的影响
引用本文:李晓明,陈劲枫,逯明辉,陈龙正,娄群峰.低温下钙对黄瓜幼苗抗氧化酶活性及POD同工酶谱的影响[J].西北植物学报,2006,26(2):241-246.
作者姓名:李晓明  陈劲枫  逯明辉  陈龙正  娄群峰
作者单位:南京农业大学,园艺学院,作物遗传与种质创新国家重点实验室,南京,210095
基金项目:国家“863”项目(2004AA241120),国家自然科学基金项目(30470120),农业部蔬菜遗传与生理重点实验室资助项目
摘    要:以耐冷性存在明显差异的栽培黄瓜‘长春密刺’和‘北京截头’为材料,研究了冷胁迫下C a2 、钙离子螯合剂(EGTA)和钙调素拮抗剂(CPZ)对低温胁迫黄瓜幼苗叶片3种抗氧化酶活性及POD同工酶的影响.对保护酶活性的研究结果表明:C aC l2、EGTA和CPZ处理均能引起3种抗氧化酶活性变化,但变化幅度因材料而异.胁迫处理中C a2 能提高2种材料的叶片抗氧化酶活性,减少其在低温逆境中的下降幅度,而EGTA和CPZ处理降低了2种材料的抗氧化酶活性,加大了低温逆境中的下降幅度.POD同工酶研究发现,C aC l2延缓冷胁迫中同工酶条带的丢失,EGTA和CPZ处理则使同工酶条带丢失提前,但材料不同对酶条带丢失时间也有影响.

关 键 词:黄瓜  低温胁迫  Ca2    抗氧化酶  同工酶
文章编号:1000-4025(2006)02-0241-06
收稿时间:2005-10-25
修稿时间:2005-10-252005-12-21

Calcium Effects on Anti-oxidative Enzyme Activities and POD Isoenzyme Spectrum
LI Xiao-ming,CHEN Jin-feng,LU Ming-hui,CHEN Long-zheng,LOU Qun-feng.Calcium Effects on Anti-oxidative Enzyme Activities and POD Isoenzyme Spectrum[J].Acta Botanica Boreali-Occidentalia Sinica,2006,26(2):241-246.
Authors:LI Xiao-ming  CHEN Jin-feng  LU Ming-hui  CHEN Long-zheng  LOU Qun-feng
Institution:National Key Laboratory for Crop Genetics and Germplasm Enhancement ,College of Horticulture,Nanjing Agricultural University, Nanjing 210095,China
Abstract:'Changchun mici' and 'Beijingjietou',two cucumber varieties remarkably differing in cold tolerance,were used to study the effects of Ca~(2 ),EGTA,a Ca~(2 ) chelator,CPZ,a Calmodulin antagonist,on the activities of three anti-oxidative enzymes and POD isoenzymmes in the leaves of young cucumber seedlings suffering low-temperature stress.The results about the activities of the anti-oxidative enzymes indicated that all the treatments with CaCl_2,EGTA and CPZ could cause the activities of the three enzymes to vary depending on the varieties.In the stress treatments,Ca~(2 ) was capable of increasing the activities of the anti-oxidative enzymes in the two varieties and thus decreasing the activity decrements of the enzymes but EGTA and CPZ were capable of lowering the activities of the anti-oxidative enzymes in the two varieties and thus enlarging the activity decrements of the enzymes.The results about POD isoenzymes indicated that under chilling stress,CaCl_2 could delay the loss of the spectral bands of the isoenzyme and EGTA and CPZ advanced the loss of the spectral bands of the isoenzyme but when did the loss of the spectral band occurred depended on the varieties.
Keywords:cucumber  low temperature  anti-oxidative enzyme  isoenzyme
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《西北植物学报》浏览原始摘要信息
点击此处可从《西北植物学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号