Upregulation of mitochondrial alternative oxidase pathway protects photosynthetic apparatus against photodamage under chilling stress in Rumex K-1 leaves

doi:10.32615/ps.2020.060

IOCAS-IR

	Upregulation of mitochondrial alternative oxidase pathway protects photosynthetic apparatus against photodamage under chilling stress in Rumex K-1 leaves
	Cheng, D.1,2; Gao, H.2; Zhang, L.3
	2020
发表期刊	PHOTOSYNTHETICA
ISSN	0300-3604
卷号	58 期号:5 页码:1116-1121
通讯作者	Zhang, L.(819296624@qq.com)
摘要	This study aimed to clarify the role of mitochondrial alternative oxidase (AOX) pathway upregulation in photoprotection under chilling stress in Rumex K-1 leaves. Malate-oxaloacetate shuttle.s activity and AOX pathway.s capacity were synchronously enhanced with light intensity increase both in control and chilling-treated leaves. Besides, the AOX pathway was upregulated more significantly when irradiated by light in chilling-treated leaves than that of control. These results suggested that excess reducing equivalents generated by photosynthesis were exported from chloroplasts and oxidized by the AOX pathway at a potentially higher rate in chilling-treated leaves than in control, which avoided the overaccumulation of excess reducing equivalents under light conditions. Also, inhibition of the AOX pathway led to more severe accumulation of hydrogen peroxide in chilling-treated leaves than that in control. Therefore, the mitochondrial AOX pathway was specifically upregulated and employed for sinking excess reducing equivalents produced by photosynthesis, which protected photosynthetic apparatus from photodamage under chilling stress in Rumex K-1 leaves.
关键词	abiotic stress photosynthesis respiratory metabolism
DOI	10.32615/ps.2020.060
收录类别	SCI
语种	英语
资助项目	State Key Laboratory of Crop Biology[2017KF05]
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:000598123800006
出版者	ACAD SCIENCES CZECH REPUBLIC, INST EXPERIMENTAL BOTANY
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/169394
专题	中国科学院海洋研究所
通讯作者	Zhang, L.
作者单位	1.Qingdao Agr Univ, Coll Landscape Architecture & Forestry, Qingdao, Shandong, Peoples R China 2.Shandong Agr Univ, Coll Life Sci, State Key Lab Crop Biol, Tai An, Shandong, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Qingdao, Shandong, Peoples R China
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Cheng, D.,Gao, H.,Zhang, L.. Upregulation of mitochondrial alternative oxidase pathway protects photosynthetic apparatus against photodamage under chilling stress in Rumex K-1 leaves[J]. PHOTOSYNTHETICA,2020,58(5):1116-1121.
APA	Cheng, D.,Gao, H.,&Zhang, L..(2020).Upregulation of mitochondrial alternative oxidase pathway protects photosynthetic apparatus against photodamage under chilling stress in Rumex K-1 leaves.PHOTOSYNTHETICA,58(5),1116-1121.
MLA	Cheng, D.,et al."Upregulation of mitochondrial alternative oxidase pathway protects photosynthetic apparatus against photodamage under chilling stress in Rumex K-1 leaves".PHOTOSYNTHETICA 58.5(2020):1116-1121.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Photosynthetica_phs-（1249KB）	期刊论文	出版稿	限制开放	CC BY-NC-SA	浏览