Karrikinolide alleviates salt stress in wheat by regulating the redox and K+/Na+ homeostasis

doi:10.1016/j.plaphy.2021.09.023

	Karrikinolide alleviates salt stress in wheat by regulating the redox and K+/Na+ homeostasis
	Shah, Faheem Afzal 1; Ni, Jun 1; Tang, Caiguo 1; Chen, Xue 1; Kan, Wenjie 1; Wu, Lifang 1,2
刊名	PLANT PHYSIOLOGY AND BIOCHEMISTRY
	2021-10-01
卷号	167
关键词	Karrikinolide Salt stress tolerance K+/Na+ homeostasis Redox homeostasis Wheat
ISSN号	0981-9428
DOI	10.1016/j.plaphy.2021.09.023
通讯作者	Wu, Lifang(lfwu@ipp.ac.cn)
英文摘要	Karrikinolide (KAR(1)), identified in biochars, has gained research attention because of its significant role in seed germination, seedling development, root development, and abiotic stresses. However, KAR(1) regulation of salt stress in wheat is elusive. This study investigated the physiological mechanism involved in KAR(1) alleviation of salt stress in wheat. The results showed KAR(1) boosted seed germination percentage under salinity stress via stimulating the relative expression of genes regulating gibberellins biosynthesis and decreasing the expression levels of abscisic acid biosynthesis and signaling genes. As seen in seed germination, exogenous supplementation of KAR(1) dramatically mitigated the salt stress also in wheat seedling, resulting in increased root and shoot growth as measured in biomass as compared to salt stress alone. Salt stress significantly induced the endogenous hydrogen peroxide and malondialdehyde levels, whereas KAR(1) strictly counterbalanced them. Under salt stress, KAR(1) supplementation showed significant induction in reduced glutathione (GSH) and reduction in oxidized glutathione (GSSG) content, which improved GSH/GSSG ratio in wheat seedlings. Exogenous supplementation of KAR(1) significantly promoted the activities of enzymatic antioxidants in wheat seedlings exposed to salt stress. KAR(1) induced the relative expression of genes regulating the biosynthesis of antioxidants in wheat seedlings under salinity. Moreover, KAR(1) induced the expression level of K+/Na+ homeostasis genes, reduced Na+ concentration, and induced K+ concentration in wheat seedling under salt stress. The results suggest that KAR(1) supplementation maintained the redox and K+/Na+ homeostasis in wheat seedling under salinity, which might be a crucial part of physiological mechanisms in KAR(1) induced tolerance to salt stress. In conclusion, we exposed the protective role of KAR(1) against salt stress in wheat.
资助项目	Anhui Natural Science Foundation[1908085QC141] ; key program of the 13th five-year plan, CASHIPS[KP-2019-21] ; President Foundation of Hefei Institutes of Physical Science of Chinese Academy of Sciences[YZJJZX202013] ; President Foundation of Hefei Institutes of Physical Science of Chinese Academy of Sciences[YZJJ2020QN29]
WOS关键词	ARABIDOPSIS SEED-GERMINATION ; ANTIOXIDANT ACTIVITY ; NA+/H+ ANTIPORTERS ; OXIDATIVE STRESS ; GENE-EXPRESSION ; K+ HOMEOSTASIS ; ABSCISIC-ACID ; TOLERANCE ; SALINITY ; GROWTH
WOS研究方向	Plant Sciences
语种	英语
出版者	ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
WOS记录号	WOS:000703775900084
资助机构	Anhui Natural Science Foundation ; key program of the 13th five-year plan, CASHIPS ; President Foundation of Hefei Institutes of Physical Science of Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/125559]
专题	中国科学院合肥物质科学研究院
通讯作者	Wu, Lifang
作者单位	1.Chinese Acad Sci, Hefei Inst Phys Sci, Key Lab High Magnet Field & Ion Beam Phys Biol, Hefei, Peoples R China 2.Zhongke Hefei Intelligent Agr Valley Co Ltd, Hefei, Peoples R China
推荐引用方式 GB/T 7714	Shah, Faheem Afzal,Ni, Jun,Tang, Caiguo,et al. Karrikinolide alleviates salt stress in wheat by regulating the redox and K+/Na+ homeostasis[J]. PLANT PHYSIOLOGY AND BIOCHEMISTRY,2021,167.
APA	Shah, Faheem Afzal,Ni, Jun,Tang, Caiguo,Chen, Xue,Kan, Wenjie,&Wu, Lifang.(2021).Karrikinolide alleviates salt stress in wheat by regulating the redox and K+/Na+ homeostasis.PLANT PHYSIOLOGY AND BIOCHEMISTRY,167.
MLA	Shah, Faheem Afzal,et al."Karrikinolide alleviates salt stress in wheat by regulating the redox and K+/Na+ homeostasis".PLANT PHYSIOLOGY AND BIOCHEMISTRY 167(2021).