干旱区生态环境知识资源中心(Arid): Physiological and Metabolic Changes of Safflower (Carthamus tinctorius L.) Cultivars in Response to Terminal Heat Stress

Arid

DOI	10.1007/s00344-023-10911-6
	Physiological and Metabolic Changes of Safflower (Carthamus tinctorius L.) Cultivars in Response to Terminal Heat Stress
	Salehi, Farshad; Rahnama, Afrasyab; Meskarbashee, Moosa; Khanlou, Khosro Mehdi; Ghorbanpour, Mansour
通讯作者	Rahnama, A
来源期刊	JOURNAL OF PLANT GROWTH REGULATION
ISSN	0721-7595
EISSN	1435-8107
出版年	2023
卷号	42 期号:10 页码:6585-6600
英文摘要	Crop productivity in tropical areas is threatened primarily by high temperatures during reproductive phase which causes a drastic change in physiological and biochemical behavior of the major crops. In the present study, two field experiments were conducted during 2017-18 and 2018-19 growing seasons. Four safflower cultivars, namely, Goldasht, Faraman, Sofeh, and Parnian, were grown under normal, moderate, and severe terminal heat stress (THS) conditions. Sowing date with desired temperature was considered as control, delayed, and late sowing dates were considered as moderate and severe THS, respectively, so that the flowering and grain filling periods of cultivars were exposed to heat stress. H2O2 concentration and malondialdehyde (MDA) contents were increased in response to moderate and severe THS for all cultivars except for Goldasht in 2017-2018, indicating heat stress-induced oxidative stress. The highest MDA contents (27.3 and 17 mmol g(-1)Fw(-1)) were found in Sofeh under severe THS during 2017-2018 and 2018-2019, respectively. Moreover, the scavenging activity of DPPH radicals and activity of antioxidant enzymes including superoxide dismutase (SOD), peroxidase (POD), ascorbate peroxidise (APX), catalase (CAT), glutathione reductase (GR), and Glutathione S-transferase (GST) were increased in response to moderate and severe THS. Free amino acids accumulation including gamma-aminobutyric acid, lysine, leucine, isoleucine, taurine, and tyrosine was observed in response to THS. Further, we found that Faraman accumulated higher contents of fructose, xylose, and galactose in fraction under THS, whereas xylose content was significantly higher in Sofeh as compared to the other carbohydrates. By comparison, Faraman and Goldasht were most tolerant to heat stress due to significant increase in DPPH value, phenol and carbohydrate contents, free amino acid contents, and higher antioxidant activity compared to the other cultivars. Totally, these results underlay the enhanced tolerance to heat stress of the safflower cultivars, and changes in these traits in delayed and late sowing dates clarify that the perspective of oilseed crops cultivation in arid region is probably related to their potential adaptation to climate change.
英文关键词	Antioxidant defense Free amino acids Heat stress Physiological responses ROS scavenging
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000916000600001
WOS关键词	HIGH-TEMPERATURE STRESS ; OXIDATIVE STRESS ; DROUGHT STRESS ; SUPEROXIDE-DISMUTASE ; ENZYME-ACTIVITY ; TOLERANCE ; ACCUMULATION ; ANTIOXIDANTS ; PERFORMANCE ; MECHANISMS
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/2XILL650/397515
推荐引用方式 GB/T 7714	Salehi, Farshad,Rahnama, Afrasyab,Meskarbashee, Moosa,et al. Physiological and Metabolic Changes of Safflower (Carthamus tinctorius L.) Cultivars in Response to Terminal Heat Stress[J],2023,42(10):6585-6600.
APA	Salehi, Farshad,Rahnama, Afrasyab,Meskarbashee, Moosa,Khanlou, Khosro Mehdi,&Ghorbanpour, Mansour.(2023).Physiological and Metabolic Changes of Safflower (Carthamus tinctorius L.) Cultivars in Response to Terminal Heat Stress.JOURNAL OF PLANT GROWTH REGULATION,42(10),6585-6600.
MLA	Salehi, Farshad,et al."Physiological and Metabolic Changes of Safflower (Carthamus tinctorius L.) Cultivars in Response to Terminal Heat Stress".JOURNAL OF PLANT GROWTH REGULATION 42.10(2023):6585-6600.