Glycinebetaine protects the D1/D2/Cytb559 complex of photosystem II against photo-induced and heat-induced inactivation

被引：106

作者：

Allakhverdiev, SI

Hayashi, H

Nishiyama, Y

Ivanov, AG

Aliev, JA

Klimov, VV

Murata, N

Carpentier, R ^{[1
]}

机构：

[1] Univ Quebec Trois Rivieres, Grp Rech Energie & Informat Biomol, Trois Rivieres, PQ GA9 5H7, Canada

[2] Natl Inst Basic Biol, Dept Regulat Biol, Okazaki, Aichi 4448585, Japan

[3] Russian Acad Sci, Inst Basic Biol Problems, Pushchino 142292, Moscow Region, Russia

[4] Ehime Univ, Dept Chem, Matsuyama, Ehime 790, Japan

[5] Bulgarian Acad Sci, Inst Biophys, BU-1113 Sofia, Bulgaria

[6] Azerbaijan Acad Sci, Inst Bot, Baku 370073, Azerbaijan

来源：

JOURNAL OF PLANT PHYSIOLOGY | 2003年 / 160卷 / 01期

关键词：

D1/D2/Cytb559; complex; glycinebetaine; heat stress; photoinactivation;

D O I：

10.1078/0176-1617-00845

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The presence of 1.0 mol/L glycinebetaine during isolation of D1/D2/Cytb559 reaction centre (RC) complexes from photosystem 11 (PSII) membrane fragments preserved the photochemical activity, monitored as the light-induced reduction of pheophytin and electron transport from diphenylcarbazide to 2,6-dichlorophenol-indophenol. Glycinebetaine also protected the D1/D2/Cytb559 complexes against strong light-induced damage to the photochemical reactions and the irreversible bleaching of beta-carotene and chlorophyll. The presence of glycinebetaine also enhanced thermotolerance of the D1/D2/Cytb559 complexes isolated in the presence of 1.0 mol/L betaine with an increase in the temperature for 50 % inactivation from 29degreesC to 35degreesC. The results indicate an increased supramolecular structural stability in the presence of glycinebetaine.

引用

页码：41 / 49

页数：9

共 41 条

[1]

ALLAKHVERDIEV SI, 1993, PHOTOSYNTHETICA, V28, P281

[2]

ALLAKHVERDIEV SI, 1989, BIOL MEMBRANY, V6, P1147

[3] Evidence for the involvement of cyclic electron transport in the protection of photosystem II against photoinhibition: Influence of a new phenolic compound [J].