Identification of tenuazonic acid as a novel type of natural photosystem II inhibitor binding in QB-site of Chlamydomonas reinhardtii

被引:99
作者
Chen, Shiguo [1 ]
Xu, Xiaoming [1 ]
Dai, Xinbin [1 ]
Yang, Chunlong [1 ]
Qiang, Sheng [1 ]
机构
[1] Nanjing Agr Univ, W Res Lab, Nanjing 210095, Peoples R China
来源
BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS | 2007年 / 1767卷 / 04期
关键词
tenuazonic acid; photosystem II inhibitor; JIP-test; binding niche; psbA mutant; resistance;
D O I
10.1016/j.bbabio.2007.02.007
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Tenuazonic acid (TeA) is a natural phytotoxin produced by Alternaria alternata, the causal agent of brown leaf spot disease of Eupatorium adenophorum. Results from chlorophyll fluorescence revealed TeA can block electron flow from Q(A) to Q(B) at photosystem II acceptor side. Based on studies with D1-mutants of Chlamydomonas reinhardtii, the No. 256 amino acid plays a key role in TeA binding to the Q(B)-niche. The results of competitive replacement with [C-14]atrazine combined with JIP-test and D1-mutant showed that TeA should be considered as a new type of photosystem II inhibitor because it has a different binding behavior within Q(B)-niche from other known photosystem II inhibitors. Bioassay of TeA and its analogues indicated 3-acyl-5-alkyltetramic and even tetramic acid compounds may represent a new structural framework for photosynthetic inhibitors. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:306 / 318
页数:13
相关论文
共 71 条
[1]  
An C., 2003, THESIS NANJING AGR U
[2]  
[Anonymous], 2004, ANAL CHLOROPHYLL FLU, DOI DOI 10.1007/978-1-4020-3218-9_12
[3]   EVIDENCE FOR DIFFERENT BINDING-SITES ON THE 33-KDA PROTEIN FOR DCMU, ATRAZINE AND QB [J].
ASTIER, C ;
BOUSSAC, A ;
ETIENNE, AL .
FEBS LETTERS, 1984, 167 (02) :321-326
[4]  
BACON K, 2001, PHOTOSYNTHESIS PHOTO, P301
[5]   Comparative analyses of three-dimensional models of bacterial reaction centers [J].
Camara-Artigas, A ;
Allen, JP .
PHOTOSYNTHESIS RESEARCH, 2004, 81 (03) :227-237
[6]  
CHELKOWSKI J, 1999, ALTERNARIA BIOL PLAN, P449
[7]   Effect of a nonhost-selective toxin from Alternaria alternata on chloroplast-electron transfer activity in Eupatorium adenophorum [J].
Chen, S ;
Dai, X ;
Qiang, S ;
Tang, Y .
PLANT PATHOLOGY, 2005, 54 (05) :671-677
[8]  
CONNO ZM, 1999, WEED RES, V39, P15
[9]  
Coombs J., 1986, TECHNIQUES BIOPRODUC, P142
[10]   Simultaneous determination of tenuazonic and cyclopiazonic acids in tomato products [J].
da Motta, S ;
Soares, LMV .
FOOD CHEMISTRY, 2000, 71 (01) :111-116