[1]纪营雪,王风贺,张 帆,等.H2O2胁迫下菱角叶片的叶绿素荧光特性研究[J].南京师范大学学报(工程技术版),2013,13(03):067-72.
 Ji Yingxue,Wang Fenghe,Zhang Fan,et al.Research on Chlorophyll Fluorescence Characteristics of Trapa Bicornis Leaves Under the Stress of H2O2[J].Journal of Nanjing Normal University(Engineering and Technology),2013,13(03):067-72.
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H2O2胁迫下菱角叶片的叶绿素荧光特性研究
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南京师范大学学报(工程技术版)[ISSN:1006-6977/CN:61-1281/TN]

卷:
13卷
期数:
2013年03期
页码:
067-72
栏目:
出版日期:
2013-09-30

文章信息/Info

Title:
Research on Chlorophyll Fluorescence Characteristics of Trapa Bicornis Leaves Under the Stress of H2O2
作者:
纪营雪12王风贺2张 帆12段伦超2王国祥2顾中铸1
(1.南京师范大学能源与机械工程学院,江苏 南京 210042) (2.南京师范大学环境科学与工程系,江苏 南京 210023)
Author(s):
Ji Yingxue12Wang Fenghe2Zhang Fan12Duan Lunchao2Wang Guoxiang2Gu Zhongzhu1
(1.School of Energy and Mechanical Engineering,Nanjing Normal University,Nanjing 210042,China) (2.Department of Environmental Science and Engineering,Nanjing Normal University,Nanjing 210023,China)
关键词:
H2O2菱角叶片叶绿素荧光特性参数光合作用
Keywords:
H2O2trapa bicornis leavesChlorophyll fluorescence characteristic parametersphotosynthesis
分类号:
S601; X524
文献标志码:
A
摘要:
采用叶绿素荧光动力学技术,研究了H2O2胁迫对菱角叶片光合作用的影响.通过对48 h内菱角叶片最大光化学量子产量(Fv/Fm)、表观光合电子传递速率(ETR)、光合有效辐射强度(PAR)以及光化学淬灭系数(qP)和非光化学淬灭系数(NPQ)等参数的研究,结果表明,H2O2的胁迫抑制了菱角的光合作用,并且抑制的程度与H2O2的浓度及胁迫时间有关.随着H2O2浓度的增加,Fv/Fm总体呈下降趋势,Fm、qP下降,F0上升,表明植物光系统Ⅱ反应中心被破坏,且浓度越高,破坏作用越明显.经高浓度H2O2(≥6 mg/L)处理的菱角叶片24 h内即出现死亡.低浓度H2O2(≤4 mg/L)处理的叶片则在48 h后出现死亡.部分数据异常变化则与H2O2在水体中的分解特性有关.
Abstract:
Using the technology of chlorophyll fluorescence kinetics,the paper studies the negative effect of H2O2 on the photosynthesis of trapa bicornis leaves.According to the measurements and analyses of the maximum photochemical quantum yield(Fv/Fm),the apparent photosynthetic electron transfer rate(ETR),the photosynthetic active radiation intensity(PAR),the quenching photochemical coefficient(qP)and the non-quenching photochemical coefficient(NPQ)of trapa bicornis leaves under the action of H2O2 with different concentrations for 48 h,the results indicates that H2O2 can influence the photosynthesis of trapa bicornis leaves,and that the degree of inhibition is related to the concentration of H2O2 and the contact time between them.With the increase in the concentration of H2O2,Fv/Fm overall shows a descending trend,Fm,qP drops while F0 rises,which indicate that the reaction center of light systemII in the plant has been destroyed,and that the higher the concentration is,the more serious it will be.The trapa bicornis leaves treated by H2O2 with high concentration(≥6 mg/L)appear dead within 24 h while those treated by H2O2 with low concentration(≤4 mg/L)appear dead within 48 h.The abnormal changes of some data are related to the decomposition properties of H2O2 in the water.

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备注/Memo

备注/Memo:
收稿日期:2013-05-12.
基金项目:国家水体污染控制与治理重大专项(2012ZX07101-008-02)、江苏省太湖水环境治理科研项目(TH2011207)、江苏省建设系统科技项目(JS2011JH25)、江苏省普通高校研究生科研创新计划项目(CXLX13_388).
通讯联系人:王风贺,博士,副教授,研究方向:水污染控制与修复.E-mail:wangfenghe@njnu.edu.cn
更新日期/Last Update: 2013-09-30