| 钙对热激诱导黄瓜幼苗抗冷性的影响 |
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| 引用本文： | 陈登科,马成仓,豆胜.钙对热激诱导黄瓜幼苗抗冷性的影响[J].天津师范大学学报(自然科学版),2007,27(3):37-39,47. |
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| 作者姓名： | 陈登科 马成仓 豆胜 |
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| 作者单位： | 天津师范大学,化学与生命科学学院,天津,300387 |
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| 基金项目： | 国家重点基础研究发展计划(973计划);天津师范大学校科研和教改项目 |
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| 摘 要： | 用CaCl2和钙的螯合剂ZGTA浸种，研究了热激诱导黄瓜幼苗抗冷性过程中的钙效应.结果表明：热激处理能够提高冷胁迫条件下黄瓜幼苗的主要抗氧化酶SOD，POD和CAT活性，降低膜脂过氧化产物丙二醛的含量和质膜透性，因而增强了黄瓜幼苗的抗冷性；钙处理可增强热激诱导这一效应，但由钙的螯合剂EGTA处理的效果则相反，这说明钙参与了热激诱导黄瓜幼苗抗冷性的调控.
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| 关 键 词： | 黄瓜幼苗 热激 抗冷性 钙 |
| 文章编号： | 1671-1114（2007）03-0037-03 |
| 收稿时间： | 2006-12-12 |
| 修稿时间： | 2006-12-12 |
Effect of Calcium on Heat-shock Induced Chilling Resistance in Cucumber Seedlings |
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| CHEN Deng-ke,MA Cheng-cang,DOU Sheng.Effect of Calcium on Heat-shock Induced Chilling Resistance in Cucumber Seedlings[J].Journal of Tianjin Normal University(Natural Science Edition),2007,27(3):37-39,47. |
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| Authors: | CHEN Deng-ke MA Cheng-cang DOU Sheng |
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| Institution: | College of Chemistry and Life Science, Tianjin Normal University, Tianjin 300387, China |
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| Abstract: | The cucumber seeds were soaked with CaCl2 solution and EGTA(Ca2 chelator),the effect of calcium on heat-shock induced chilling resistance in cucumber seedlings was studied.The results showed that heat-shock pretreatment could enhance the activity of superoxide dismutase(SOD),peroxidase(POD) and catalase(CAT),and reduce the content of malon-diadehyde (product of membrane lipid peroxidation) and cytomembrane permeability in cucumber seedlings during chilling stress.Therefore heat-shock pretreatment could improve the chilling resistance of cucumber seedlings.Ca2 treatment could increase the heat-shock-induced effect,but the EGTA(Ca2 chelator) treatment had opposite effect.From the facts above,it is obvious that Ca2 is involved in the heat-shock-induced chilling resistance of the cucumber seedlings. |
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| Keywords: | cucumber seedling heat-shock chilling resistance Ca2 |
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