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

CORC > 海洋研究所 > 中国科学院海洋研究所

	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.1; Zhang, L.3
刊名	PHOTOSYNTHETICA
	2020
卷号	58 期号:5 页码:1116-1121
关键词	abiotic stress photosynthesis respiratory metabolism
ISSN号	0300-3604
DOI	10.32615/ps.2020.060
通讯作者	Zhang, L.(819296624@qq.com)
英文摘要	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.
资助项目	State Key Laboratory of Crop Biology[2017KF05]
WOS研究方向	Plant Sciences
语种	英语
出版者	ACAD SCIENCES CZECH REPUBLIC, INST EXPERIMENTAL BOTANY
WOS记录号	WOS:000598123800006
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/169393]
专题	中国科学院海洋研究所
通讯作者	Zhang, L.
作者单位	1.Shandong Agr Univ, Coll Life Sci, State Key Lab Crop Biol, Tai An, Shandong, Peoples R China 2.Qingdao Agr Univ, Coll Landscape Architecture & Forestry, Qingdao, Shandong, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Qingdao, Shandong, Peoples R China
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.