中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 植物研究所
  3. 中国科学院植物研究所
  4. 植被与环境变化国家重点实验室
Photoinactivation of Photosystem II in wild-type and chlorophyll b-less barley leaves: which mechanism dominates depends on experimental circumstances

文献类型：期刊论文

作者He, Jie; Yang, Wenquan2; Qin, Lin; Fan, Da-Yong; Chow, Wah Soon4
刊名PHOTOSYNTHESIS RESEARCH
出版日期2015
卷号126期号:2-3页码:399-407
关键词Chlorophyll fluorescence P700 Photosystem II Photoinactivation of Photosystem II Photoinhibition
ISSN号0166-8595
DOI10.1007/s11120-015-0167-0
文献子类Article
英文摘要Action spectra of photoinactivation of Photosystem II (PS II) in wild-type and chlorophyll b-less barley leaf segments were obtained. Photoinactivation of PS II was monitored by the delivery of electrons from PS II to PS I following single-turnover flashes superimposed on continuous far-red light, the time course of photoinactivation yielding a rate coefficient k (i). Susceptibility of PS II to photoinactivation was quantified as the ratio of k (i) to the moderate irradiance (I) of light at each selected wavelength. k (i)/I was very much higher in blue light than in red light. The experimental conditions permitted little excess light energy absorbed by chlorophyll (not utilized in photochemical conversion or dissipated in controlled photoprotection) that could lead to photoinactivation of PS II. Therefore, direct absorption of light by Mn in PS II, rather than by chlorophyll, was more likely to have initiated the much more severe photoinactivation in blue light than in red light. Mutant leaves were ca. 1.5-fold more susceptible to photoinactivation than the wild type. Neither the excess-energy mechanism nor the Mn mechanism can explain this difference. Instead, the much lower chlorophyll content of mutant leaves could have exerted an exacerbating effect, possibly partly due to less mutual shading of chloroplasts in the mutant leaves. In general, which mechanism dominates depends on the experimental conditions.
学科主题Plant Sciences
出版地DORDRECHT
电子版国际标准刊号1573-5079
WOS关键词OXYGEN-EVOLVING COMPLEX ; CAPSICUM-ANNUUM ; PROTEIN-DEGRADATION ; SINGLET OXYGEN ; LIGHT ENERGY ; IN-VIVO ; PHOTOINHIBITION ; FLUORESCENCE ; PHOTODAMAGE ; EXCITATION
WOS研究方向Science Citation Index Expanded (SCI-EXPANDED)
语种英语
WOS记录号WOS:000362006900019
出版者SPRINGER
资助机构Singapore Millennium Fund ; ARC [DP120100872] ; Chinese Academy of Sciences [KZCX2-XB3-09] ; National Natural Science Foundation [31070356]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/25797]  
专题植被与环境变化国家重点实验室
作者单位1.Australian Natl Univ, Div Plant Sci, Res Sch Biol, Canberra, ACT 2601, Australia
2.Nanyang Technol Univ, Natl Inst Educ, Nat Sci & Sci Educ, Singapore 637616, Singapore
3.Northwest A&F Univ, Coll Life Sci, Yangling 712100, Shaanxi, Peoples R China
4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式
GB/T 7714		 He, Jie,Yang, Wenquan,Qin, Lin,et al. Photoinactivation of Photosystem II in wild-type and chlorophyll b-less barley leaves: which mechanism dominates depends on experimental circumstances[J]. PHOTOSYNTHESIS RESEARCH,2015,126(2-3):399-407.
APA He, Jie,Yang, Wenquan,Qin, Lin,Fan, Da-Yong,&Chow, Wah Soon.(2015).Photoinactivation of Photosystem II in wild-type and chlorophyll b-less barley leaves: which mechanism dominates depends on experimental circumstances.PHOTOSYNTHESIS RESEARCH,126(2-3),399-407.
MLA He, Jie,et al."Photoinactivation of Photosystem II in wild-type and chlorophyll b-less barley leaves: which mechanism dominates depends on experimental circumstances".PHOTOSYNTHESIS RESEARCH 126.2-3(2015):399-407.

入库方式： OAI收割

来源：植物研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。