Antioxidant Function of Alternative Oxidase in Mitochondria of Winter Wheat during Cold Hardening

被引：0

作者：

Grabel'nykh, O. I. ^{[1
]}

Pobezhimova, T. P. ^{[1
]}

Pavlovskaya, N. S. ^{[1
]}

Koroleva, N. A. ^{[1
]}

Borovik, O. A. ^{[2
]}

Lyubushkina, I. V. ^{[1
]}

Voinikov, V. K. ^{[1
]}

机构：

[1] Russian Acad Sci, Siberian Inst Plant Physiol & Biochem, Siberian Branch, Irkutsk 664033 33, Russia

[2] Irkutsk State Univ, Irkutsk 664003, Russia

来源：

BIOLOGICHESKIE MEMBRANY | 2011年 / 28卷 / 04期

关键词：

CYANIDE-INSENSITIVE RESPIRATION; FREE FATTY-ACIDS; UNCOUPLING-PROTEIN; PLANT-MITOCHONDRIA; ELECTRON-TRANSPORT; GROWTH TEMPERATURE; OXIDATIVE STRESS; GENE-EXPRESSION; CAPACITY; PATHWAY;

D O I：

暂无

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

The activity of alternative oxidase (AOX) and generation of reactive oxygen species (ROS) in mitochondria of winter wheat Triticum aestivum L. isolated from seedlings subjected to one (7-day exposure to 2-3 degrees C) and two (7-day exposure to 2-3 degrees C and 2-day exposure to -2 degrees C) phases of a cold hardening has been studied. The antioxidant role of AOX in the first phase of the cold hardening has been determined with inhibitors of respiratory chain. Exposure to low temperature was shown to lead to inhibition of cytochrome pathway in mitochondria, increase of ROS content and alternative pathway. Decrease in succinate-and antimycine A-induced ROS generation was found during two phases of cold hardening. This fact may point out to functioning of uncoupling proteins under these conditions. Thus, antioxidant function of AOX during the first phase of cold hardening may be an important component of the cold adaptation mechanism in winter crops. The data suggest that ROS and free fatty acids may be signal molecules regulating the activity of two energy-dissipation systems (AOX and uncoupling proteins).

引用

页码：274 / 283

页数：10

共 24 条

[21] Mitochondrial energy-dissipating systems (alternative oxidase, uncoupling proteins, and external NADH dehydrogenase) are involved in development of frost-resistance of winter wheat seedlings [J].

O. I. Grabelnych ;

O. A. Borovik ;

E. L. Tauson ;

T. P. Pobezhimova ;

A. I. Katyshev ;

N. S. Pavlovskaya ;

N. A. Koroleva ;

I. V. Lyubushkina ;

V. Yu. Bashmakov ;

V. N. Popov ;

G. B. Borovskii ;

V. K. Voinikov .

Biochemistry (Moscow), 2014, 79 :506-519

[22] Photosynthetic, antioxidant activities, and osmoregulatory responses in winter wheat differ during the stress and recovery periods under heat, drought, and combined stress [J].

Ru, Chen ;

Hu, Xiaotao ;

Chen, Dianyu ;

Wang, Wene ;

Zhen, Jingbo .

PLANT SCIENCE, 2023, 327

[23] Transcriptome sequencing reveals mechanism of improved antioxidant capacity and maintained postharvest quality of winter jujube during cold storage after salicylic acid treatment [J].

Sang, Yueying ;

Liu, Yuxing ;

Tang, Yisong ;

Yang, Wanting ;

Guo, Minrui ;

Chen, Guogang .

POSTHARVEST BIOLOGY AND TECHNOLOGY, 2022, 189

[24] Effects of Cold Stress on Skin Color, Immuno-Antioxidant Function, Muscle Compositions, and Intestinal Microbiota of Red Tilapia During Overwintering [J].

Yang, Hao-ran ;

Munyaradzia, Herbert Brightmore ;

Zhu, Wen-bin ;

Dong, Zai-jie ;

Wang, Lan-mei .

AQUACULTURE RESEARCH, 2025, 2025 (01)

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