Advanced   Register
XTBG OpenIR  > 植物生理生态研究组  > 期刊论文

title: Evidence for the role of cyclic electron flow in photoprotection for oxygen-evolving complex
author: Huang, Wei;  Yang, Ying-Jie;  Hu, Hong;  et al
Issued Date: 2016
Abstract: Cyclic electron flow (CEF) alleviates PSII photo-inhibition under high light by at least two different mechanisms: one is liked to thermal energy dissipation (qE) and the other one is independent of qE. However, the latter mechanism is unclear. Because the photodamage to PSII primarily occurred at the oxygen-evolving complex (OEC), and the stability of OEC is dependent on proton gradient across thylakoid membrane (Delta pH), we hypothesize that the CEF-dependent generation of Delta pH can alleviate photodamage to OEC. To test this hypothesis, we determined the effects of antimycin A (AA), methyl viologen (MV), chloramphenicol (CM), nigericin (Nig) on PSII activity and the stability of OEC for leaves of a light-demanding tropical tree species Erythrophleum guineense by the analysis of OKJIP chlorophyll a fluorescence transient. After high light treatment, the stronger decrease in F-v/F-m, in the AA-, CM-, MV-, and Nig-treated samples was accompanied with larger photo damage of OEC. The AA-treated samples significantly showed lower CEF activity than the H2O-treated samples. Although the AA-treated leaves significantly showed stronger PSII photo-inhibition and photo-damage of OEC compared to the H2O-treated leaves, the value of non photochemical quenching did not differ between them. Therefore, CEF activity was partly inhibited in the AA-treated samples, and the stronger PSII photo-inhibition in the AA-treated leaves was independent of qE. Taking together, we propose a hypothesis that CEF-dependent generation of Delta pH under high light plays an important role in photoprotection for the OEC activity.
Source: JOURNAL OF PLANT PHYSIOLOGY
Appears in Collections:植物生理生态研究组_期刊论文

Files in This Item:

File SizeFormat
Evidence for the role of cyclic electron flow in photoprotection for oxygen-evolving complex.pdf1283KbAdobe PDFView  Download


全文许可: Creative Commons 署名-非商业性使用-相同方式共享 3.0

Recommended Citation:
Huang, Wei,Yang, Ying-Jie,Hu, Hong,et al. Evidence For The Role Of Cyclic Electron Flow In Photoprotection For Oxygen-evolving Complex[J]. Journal Of Plant Physiology,2016,194(X):54-60.

SCI Citaion Data:
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Huang, Wei]'s Articles
 [Yang, Ying-Jie]'s Articles
 [Hu, Hong]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Huang, Wei]‘s Articles
 [Yang, Ying-Jie]‘s Articles
 [Hu, Hong]‘s Articles
Scirus search
 Similar articles in Scirus
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Powered by CSpace