[1]王振兴,艾 军,杨义明,等.不同温度对五味子叶片光系统 Ⅱ 活性的影响[J].北方园艺,2014,38(14):160-163.
　WANG Zhen-xing,AI Jun,YANG Yi-ming,et al.Effect of Different Temperature Treatments on Photosystem Ⅱ in Leaves of Schisandra chinensis (Turcz.) Baill.[J].Northern Horticulture,2014,38(14):160-163.
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不同温度对五味子叶片光系统 Ⅱ 活性的影响

《北方园艺》[ISSN:1001-0009/CN:23-1247/S] 卷: 第38卷 期数: 2014年14期 页码: 160-163 栏目: 出版日期: 2014-07-30
Title:
Effect of Different Temperature Treatments on Photosystem Ⅱ in Leaves of Schisandra chinensis (Turcz.) Baill.
文章编号:
1001-0009(2014)14-0160-04
作者:
王振兴; 艾 军; 杨义明; 范书田; 秦红艳; 刘迎雪
中国农业科学院 特产研究所,吉林 长春 130112
Author(s):
WANG Zhen-xing; AI Jun; YANG Yi-ming; FAN Shu-tian; QIN Hong-yan; LIU Ying-xue
Institute of Special Wild Economic Animal and Plant Science,Chinese Academy of Agricultural Sciences,Changchun,Jilin 130112
关键词:
五味子; 高温胁迫; 光系统II
Keywords:
Schisandra chinensis (Turcz.) Baill.; heat stress; photosystem Ⅱ
分类号:
R 282.710.5
文献标志码:
A
摘要:
以五味子品种“嫣红”为试材，采用植物效率仪Pocket-PEA研究了热胁迫处理对光系统活性的影响。结果表明：随着温度的升高，原初最大光化学效率（Fv/Fm）和叶片捕获的激子将电子传递到电子传递链中QA-下游电子受体的概率（ψ0）在35~40℃的范围内并没有明显变化，当温度升高到44℃和48℃时，则显著下降，ψ0的下降说明电子传递链受体侧受到了严重的抑制。随着温度升高，相对可变荧光在K点和J点的值（Vk和Vi）逐渐上升，但在44℃和48℃较对照呈显著上升。随着热胁迫时间的延长，Vk和Vi逐渐升高，胁迫5 min后在K点和J点呈现双峰曲线，随胁迫时间延长Vk虽逐渐升高，但K点的峰逐渐消失，J点的峰则逐渐凸显。说明高温引起电子传递链供体侧和受体侧受到伤害，但供体侧对高温更加敏感。
Abstract:
The effect of heat stress on photosynthetic activities of photosystem in leaves of Schisandra chinensis (Turcz.) Baill.‘Yanhong’ was studied by a portable fluorometer (PEA-Plant Efficiency Analyser).The results showed that Fv/Fm and ?ψ0 had not significantly changed at 35~40℃,but at 44℃ and 48℃ there was a significant decrease.It indicated that the acceptor side was inhibited severely.With the increasing of temperature,the relative variable fluorescence Vk and Vj increased gradually and became significantly higher at 44℃ and 48℃.When time of heat stress increased from 5 min to 40 min,Vk and Vj increased gradually,bimodal curve was observed at K point and J point after heat stress was kept in 5 min.Although Vk increased gradually as heat stress time prolonged,K point disappeared gradually and J peak became more prominent.Above all,both the donor side and the acceptor side of PS Ⅱ were damaged,especially the donor side,were more sensitive to heat stress.

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备注/Memo

第一作者简介：王振兴（1982-），男，硕士，研究实习员，研究方向为植物生理学研究。E-mail:zhenxinghd@yahoo.com.cn.

责任作者：艾军（1968-），男，研究员，硕士生导师，研究方向为果树生理生化研究。E-mail:aijun1005@163.com.
基金项目：吉林省科技厅科技成果转化补助资助项目（20125074）；吉林省科技厅科技成果转化计划资助项目（20130305050）；吉林省科技厅科技成果转化计划资助项目（20130305049）。
收稿日期：2014-04-08

更新日期/Last Update: 2014-08-07