干旱区生态环境知识资源中心(Arid): High concentrations of sodium and chloride ions have opposing effects on the growth of the xerophyte Pugionium cornutum under saline conditions

Arid

DOI	10.1002/jpln.202000148
	High concentrations of sodium and chloride ions have opposing effects on the growth of the xerophyte Pugionium cornutum under saline conditions
	Cui, Yan-Nong; Wang, Fang-Zhen; Yuan, Jian-Zhen; Guo, Huan; Wang, Suo-Min; Ma, Qing
通讯作者	Ma, Q
来源期刊	JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE
ISSN	1436-8730
EISSN	1522-2624
英文摘要	Background: The research on plant salt tolerance has mainly focused on Na+, but Cl- has been relatively neglected. Previous studies have found that the xerophyte Pugionium cornutum, an important forage grass in the arid and semi-arid regions of northwestern China, could synergistically accumulate high quintiles of Na+ and Cl- in its shoots under NaCl treatments. However, the separate effects of these ions on the adaptation of P. cornutum to saline conditions have not been investigated. Aims: In this study, the response of P. cornutum to Na+ and Cl- was analyzed. Methods: Four-week-old seedlings were treated with additional 50 mM NaCl, Na+-specific solution containing 50 mM Na+ with a mix of NO3 - , H-2 PO4 - , and SO4 2- as counter anions, and Cl--specific solution containing 50 mM Cl- with a mix of K+, Ca2+, and Mg2+ as counter cations. Results: Compared with the normal growth condition irrigated with Hoagland solution, the Na+-specific solution severely impaired the growth and photosynthesis of P. cornutum due to the high accumulation of Na+ in shoots and the deterioration of tissue K+ homeostasis; while the Cl--specific solution significantly increased shoot fresh and dry biomass. The Cl--specific solution could also increase the turgor pressure in leaves for enhancing osmotic adjustment, which should be mainly attributed to the large accumulation of Cl-, since the concentrations of other ions, including K+, Mg2+, Ca2+, H-2 PO4 - , and SO4 2- , in tissues under Cl--specific treatment were maintained at the same levels as those observed under the normal condition. Conclusions: P. cornutum displays an excellent tolerance to moderate Cl- but not to Na+, and the large accumulation of Cl- should play a positive role in stimulating the growth of P. cornutum under salt stress.
英文关键词	chloride osmotic adjustment salt tolerance sodium xerophytic plant
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000588413700001
WOS关键词	CL-IONS ; FREE PROLINE ; STRESS ; SALT ; NA+ ; NITRATE ; PLANTS ; IDENTIFICATION ; SENSITIVITY ; HOMEOSTASIS
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS研究方向	Agriculture ; Plant Sciences
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/328469
作者单位	[Cui, Yan-Nong; Wang, Fang-Zhen; Yuan, Jian-Zhen; Guo, Huan; Wang, Suo-Min; Ma, Qing] Lanzhou Univ, Coll Pastoral Agr Sci & Technol, Minist Agr & Rural Affairs, State Key Lab Grassland Agroecosyst,Key Lab Grass, Lanzhou 730020, Peoples R China
推荐引用方式 GB/T 7714	Cui, Yan-Nong,Wang, Fang-Zhen,Yuan, Jian-Zhen,et al. High concentrations of sodium and chloride ions have opposing effects on the growth of the xerophyte Pugionium cornutum under saline conditions[J]. 兰州大学.
APA	Cui, Yan-Nong,Wang, Fang-Zhen,Yuan, Jian-Zhen,Guo, Huan,Wang, Suo-Min,&Ma, Qing.
MLA	Cui, Yan-Nong,et al."High concentrations of sodium and chloride ions have opposing effects on the growth of the xerophyte Pugionium cornutum under saline conditions".JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE