Cyclic electron flow plays an important role in protection of spinach leaves under high temperature stress

被引：22

作者：

Agrawal, D. ^{[1
]}

Allakhverdiev, S. I. ^{[2
,3
,4
]}

Jajoo, A. ^{[1
]}

机构：

[1] Devi Ahilya Univ, Sch Life Sci, Indore, Madhya Pradesh, India

[2] Russian Acad Sci, KA Timiryazev Plant Physiol Inst, Ul Timiryazevskaya 49, Moscow 127550, Russia

[3] Russian Acad Sci, Inst Basic Biol Problems, Pushchino 142290, Moscow Oblast, Russia

[4] Moscow MV Lomonosov State Univ, Fac Biol, Dept Plant Physiol, Moscow 119234, Russia

来源：

RUSSIAN JOURNAL OF PLANT PHYSIOLOGY | 2016年 / 63卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

Spinacia oleracea; chlorophyll fluorescence; cyclic electron flow; energy dissipation; high temperature; quantum yield; photosystem I (PSI); photosystem II (PSII); CHLOROPHYLL FLUORESCENCE; PHOTOSYSTEM-II; HEAT-STRESS; LIGHT; PHOTOSYNTHESIS; RESPONSES; RUBISCO; EXCESS; WHEAT;

D O I：

10.1134/S1021443716020023

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Heat stress is one of the major abiotic stresses and affects plant productivity in a negative manner. Photosynthetic processes are largely influenced by heat stress. In spinach (Spinacia oleracea L.) leaves at 40A degrees C the decrease in PSII activity was mainly due to the decreased efficiency to capture excitation energy, increased yield of regulatory energy dissipation mechanism Y(NPQ), and decreased quantum yield Y(II). According to the results below 45A degrees C PSI is stable and protected while at a higher temperature stability of PSI was reduced and protection was not sufficient. Therefore, we conclude that cyclic electron flow plays an important role in protecting PSI from heat stress.

引用

页码：210 / 215

页数：6

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