干旱区生态环境知识资源中心(Arid): Effect of salt stress on the photosynthetic characteristics and endogenous hormones, and: A comprehensive evaluation of salt tolerance in Reaumuria soongorica seedlings

Arid

DOI	10.1080/15592324.2022.2031782
	Effect of salt stress on the photosynthetic characteristics and endogenous hormones, and: A comprehensive evaluation of salt tolerance in Reaumuria soongorica seedlings
	Yan, Shipeng; Chong, Peifang; Zhao, Ming
通讯作者	Chong, PF (corresponding author)，Gansu Agr Univ, Coll Forestry, Lanzhou, Peoples R China.
来源期刊	PLANT SIGNALING & BEHAVIOR
ISSN	1559-2316
EISSN	1559-2324
出版年	2022-02
英文摘要	Salinity is a major limiting factor in desert ecosystems, where Reaumuria soongarica is a dominant species. It is crucial to study the growth and physiological response mechanisms of R. soongorica under salt stress for the protection and restoration of the desert ecosystems. However, the effects of salt concentration and stress duration on endogenous hormonal content and photosynthetic efficiency and salt injury index of R. soongorica leaves have not been reported. Currently, there is no systematic evaluation system to determine physiological adaptation strategies of R. soongorica seedlings in response to salt stress. In this study, simulation experiments were performed with NaCl solution mixed with soil. Enzyme-linked immunosorbent assay and LI-6800 portable photosynthesis analyzer were used to measure indole acetic acid (IAA), corn nucleoside hormone (ZR), abscisic acid (ABA), and photosynthesis-related parameters in leaves of R. soongorica seedlings at 0 (24-48 h after salt treatment), 3, 6, and 9 days. At the same time, growth indicators (salt injury index, root-to-shoot ratio), reactive oxygen species content, superoxide dismutase enzyme (SOD) activity, osmolyte content, membrane peroxidation, and leaf pigment content were measured at different salt concentrations and treatment times. Finally, principal component analysis and membership function method were used to comprehensively evaluate the salt tolerance of seedlings. The results showed that treatment with 200 mM NaCl for 3 days significantly increased SOD activity, the content of osmotic adjustment substances (proline, soluble protein), endogenous hormone content (ABA, ZR), root-to-shoot ratio, and Chla/Chlb values but decreased malondialdehyde content (MDA) in the leaves of R. soongorica seedlings. Leaf water content (LRWC), net photosynthetic rate (Pn), transpiration rate (Tr), water use efficiency (WUE), and IAA content in R. soongorica seedlings were lower than those in the control, when exposed to 400 and 500 mM NaCl solutions. Finally, the principal component analysis revealed endogenous hormone content and antioxidant enzyme activity to be useful for the comprehensive evaluation of salt tolerance in R. soongorica seedlings. The R. soongorica seedlings showed the strongest salt tolerance when exposed to 200 mM NaCl for 3 days. This study provides a theoretical foundation for gene mining and breeding of salt-tolerant species in the future.
英文关键词	Reaumuria soongorica salt stress growth and development photosynthetic characteristics endogenous hormones
类型	Article ; Early Access
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000759306300001
WOS关键词	STIMULATES GROWTH ; SALINITY STRESS ; ASCORBIC-ACID ; L. GENOTYPES ; RESPONSES ; PLANTS ; WATER ; ACCUMULATION ; CULTIVARS ; IMPACT
WOS类目	Biochemistry & Molecular Biology ; Plant Sciences
WOS研究方向	Biochemistry & Molecular Biology ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377238
作者单位	[Yan, Shipeng; Chong, Peifang] Gansu Agr Univ, Coll Forestry, Lanzhou, Peoples R China; [Zhao, Ming] Gansu Prov Acad, Qilian Water Resource Conservat Forests Res Inst, Zhangye, Peoples R China
推荐引用方式 GB/T 7714	Yan, Shipeng,Chong, Peifang,Zhao, Ming. Effect of salt stress on the photosynthetic characteristics and endogenous hormones, and: A comprehensive evaluation of salt tolerance in Reaumuria soongorica seedlings[J],2022.
APA	Yan, Shipeng,Chong, Peifang,&Zhao, Ming.(2022).Effect of salt stress on the photosynthetic characteristics and endogenous hormones, and: A comprehensive evaluation of salt tolerance in Reaumuria soongorica seedlings.PLANT SIGNALING & BEHAVIOR.
MLA	Yan, Shipeng,et al."Effect of salt stress on the photosynthetic characteristics and endogenous hormones, and: A comprehensive evaluation of salt tolerance in Reaumuria soongorica seedlings".PLANT SIGNALING & BEHAVIOR (2022).