干旱区生态环境知识资源中心(Arid): Elevated atmospheric CO2 concentration mitigates salt damages to safflower: Evidence from physiological and biochemical examinations

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DOI	10.1016/j.plaphy.2023.108242
	Elevated atmospheric CO2 concentration mitigates salt damages to safflower: Evidence from physiological and biochemical examinations
	Vaghar, M.; Eshghizadeh, H. R.; Ehsanzadeh, P.
通讯作者	Eshghizadeh, HR
来源期刊	PLANT PHYSIOLOGY AND BIOCHEMISTRY
ISSN	0981-9428
EISSN	1873-2690
出版年	2024
卷号	206
英文摘要	The physiological and biochemical responses of salt-stressed safflower to elevated CO2 remain inadequately known. This study investigated the interactive effects of high CO2 concentration (700 +/- 50 vs. 400 +/- 50 mu mol mol-1) and salinity stress levels (0.4, 6, and 12 dS m- 1, NaCl) on growth and physiological properties of four safflower (Carthamus tinctorius L.) genotypes, under open chamber conditions. Results showed that the effects of CO2 on biomass of shoot and grains depend on salt stress and plant genotype. Elevated CO2 conditions increased shoot dry weight under moderate salinity stress and decreased it under severe stress. The increased CO2 concentration also increased the safflower genotypes' relative water content and their K+/Na + concentrations. Also enriched CO2 increased total carotenoid levels in safflower genotypes and improved membrane stability index by reducing H2O2 levels. In addition, increased CO2 level led to an increase in seed oil content, under both saline and non-saline conditions. This effect was particularly pronounced under severe saline conditions. Under conditions of high CO2 and salinity, the Koseh genotype exhibited higher grain weight and seed oil content than other genotypes. This advantage is due to the higher relative water content, maximum quantum efficiency of photosystem II (Fv/Fm), and K+/Na+, as well as the lower Na+ and H2O2 concentrations. Results indicate that the high CO2 level mitigated the destructive effect of salinity on safflower growth by reducing Na + uptake and increasing the Fv/Fm, total soluble carbohydrates, and membrane stability index. This finding can be used in safflower breeding programs to develop cultivars that can thrive in arid regions with changing climatic conditions.
英文关键词	EnrichedCO2 Genotypic variability K plus /Na plus Membrane stability index Seed oil content
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:001132722400001
WOS关键词	CARTHAMUS-TINCTORIUS L. ; WATER-USE EFFICIENCY ; FATTY-ACID-COMPOSITION ; CHLOROPHYLL FLUORESCENCE ; OXIDATIVE STRESS ; TEMPERATURE INCREASE ; ANTIOXIDANT SYSTEMS ; SALINITY STRESS ; YIELD RESPONSE ; GRAIN-YIELD
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/2XILL650/405114
推荐引用方式 GB/T 7714	Vaghar, M.,Eshghizadeh, H. R.,Ehsanzadeh, P.. Elevated atmospheric CO2 concentration mitigates salt damages to safflower: Evidence from physiological and biochemical examinations[J],2024,206.
APA	Vaghar, M.,Eshghizadeh, H. R.,&Ehsanzadeh, P..(2024).Elevated atmospheric CO2 concentration mitigates salt damages to safflower: Evidence from physiological and biochemical examinations.PLANT PHYSIOLOGY AND BIOCHEMISTRY,206.
MLA	Vaghar, M.,et al."Elevated atmospheric CO2 concentration mitigates salt damages to safflower: Evidence from physiological and biochemical examinations".PLANT PHYSIOLOGY AND BIOCHEMISTRY 206(2024).