| 多蒴灰藓对强紫外线照射的生理响应 |
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| 引用本文： | 沈蕾,杨武,郭水良,曹同.多蒴灰藓对强紫外线照射的生理响应[J].热带亚热带植物学报,2011,19(2):120-126. |
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| 作者姓名： | 沈蕾 杨武 郭水良 曹同 |
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| 作者单位： | 1. 上海师范大学生命与环境科学学院,上海,200234
2. 浙江师范大学化学与生命科学学院,浙江,金华,321004 |
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| 基金项目： | Supported by the Science and Technology Commission of Shanghai Municipality(08390513800); Leading Academic Discipline Project of Shanghai Municipal Education Commission(J50401) |
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| 摘 要： | 将多蒴灰藓(Hypnum fertile)置于紫外辐射下照光3周，研究了紫外辐射对多蒴灰藓的损害及其生理响应。结果表明： 与对照(自然环境)相比，多蒴灰藓的叶绿素和类胡萝卜素含量均随紫外辐射时间的延长而减少，MDA含量却明显增加，SOD、POD和CAT活性也相应增加；增加紫外辐射量会引起多蒴灰藓的氧化胁迫，其能通过增加抗氧化酶的活性来减轻这种胁迫。
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| 关 键 词： | 多蒴灰藓 叶绿素 类胡萝卜素 抗氧化酶 紫外辐射 |
| 收稿时间： | 2010/7/17 0:00:00 |
| 修稿时间： | 2011/1/11 0:00:00 |
Physiological Responses to Enhanced UV-B Radiation of Hypnum fertile |
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| SHEN Lei,YANG Wu,GUO Shui-liang and CAO Tong.Physiological Responses to Enhanced UV-B Radiation of Hypnum fertile[J].Journal of Tropical and Subtropical Botany,2011,19(2):120-126. |
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| Authors: | SHEN Lei YANG Wu GUO Shui-liang and CAO Tong |
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| Institution: | College of Life and Environmental Sciences, Shanghai Normal University,College of Chemistry and Life Sciences, Zhejiang Normal University,College of Life and Environmental Sciences, Shanghai Normal University,College of Life and Environmental Sciences, Shanghai Normal University |
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| Abstract: | The damages of Hypnum fertile(Bryopsida: Musci) and its physiological responses were studied under enhanced UV-B radiation for 3 weeks.The doses of biologically effective UV-B irradiation were 6.93 kJ m-2d-1(ambient UV-B radiation) and 9.01 kJ m-2d-1(enhanced UV-B radiation,about 30% higher than ambient UV-B radiation),respectively.The results showed that the contents of chlorophyll and carotenoid of H.fertile both decreased with time under enhanced UV-B radiation,whereas MDA content significantly increased... |
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| Keywords: | Hypnum fertile Chlorophyll Carotenoid Antioxidant enzymes UV-B radiation |
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