干旱区生态环境知识资源中心(Arid): Exogenous calcium application mediates K+ and Na+ homeostasis of different salt-tolerant rapeseed varieties under NaHCO3 stress

Arid

DOI	10.1007/s10725-023-01066-1
	Exogenous calcium application mediates K+ and Na+ homeostasis of different salt-tolerant rapeseed varieties under NaHCO3 stress
	Cao, Xiaoqiang; Sun, Lupeng; Wang, Weichao; Zhang, Fenghua
通讯作者	Zhang, FH
来源期刊	PLANT GROWTH REGULATION
ISSN	0167-6903
EISSN	1573-5087
出版年	2024
卷号	102 期号:2 页码:367-378
英文摘要	Brassica napus L. (rapeseed), an oil crop widely cropped in arid and semi-arid areas of Xinjiang, China, is susceptible to ion toxicity under saline-alkaline conditions. Exogenous Ca2+ application can improve crop stress tolerance, but its effect on the ion migration and accumulation of alkaline-stressed rapeseed is still unclear. Therefore, in this study, the effects of different concentrations of CaCl2 (CK, 0%, 0.25%, 0.5%, 1% and 2%) solution foliar on the ionic homeostasis of salt-tolerant rapeseed variety Huayouza 62 and salt-sensitive rapeseed variety Xiangyou 15 under NaHCO3 stress were studied. The results showed that NaHCO3 stress inhibited rapeseed Ca2+ uptake in stems and leaves, resulting in K+ and Na+ imbalance in various tissues, the plasma membrane permeability and MDA content were significantly increased. The Non-invasive Micro-Test technology (NMT) detection found that the influx of Na+ and the efflux of K+ and Ca2+ in Xiangyou 15 mesophyll cells were more significant than those in Huayouza 62 under NaHCO3 stress, and the growth and development were significantly inhibited. However, after foliar spraying concentration was 0.5% CaCl2 solution, the ion imbalance-induced membrane damage was significantly alleviated, the influx of Na+ and the efflux of K+ and Ca+ in mesophyll cells were inhibited, and the K+ and Na+ homeostasis was maintained in different tissues, this effect was particularly prominent in the stems and leaves of Huayouza 62 and roots of Xiangyou 15, and it promoted the growth and development of rapeseed seedlings. Therefore, foliar spraying with an appropriate concentration of Ca2+ could promote the K+ and Na+ homeostasis and improve salt tolerance of alkali-stressed rapeseed seedlings. This study will deepen our understanding of how exogenous Ca2+ application regulates alkaline-stressed rapeseed ionic homeostasis, and provide a method for improving the adaptability and growth of rapeseed in arid areas.
英文关键词	NaHCO3 stress Exogenous Ca2+ Ion accumulation Ion fluxes
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001081444200001
WOS关键词	MECHANISMS ; ROOT ; PEPPER ; BARLEY ; PLANTS ; CA2+
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405108
推荐引用方式 GB/T 7714	Cao, Xiaoqiang,Sun, Lupeng,Wang, Weichao,et al. Exogenous calcium application mediates K+ and Na+ homeostasis of different salt-tolerant rapeseed varieties under NaHCO3 stress[J],2024,102(2):367-378.
APA	Cao, Xiaoqiang,Sun, Lupeng,Wang, Weichao,&Zhang, Fenghua.(2024).Exogenous calcium application mediates K+ and Na+ homeostasis of different salt-tolerant rapeseed varieties under NaHCO3 stress.PLANT GROWTH REGULATION,102(2),367-378.
MLA	Cao, Xiaoqiang,et al."Exogenous calcium application mediates K+ and Na+ homeostasis of different salt-tolerant rapeseed varieties under NaHCO3 stress".PLANT GROWTH REGULATION 102.2(2024):367-378.