干旱区生态环境知识资源中心(Arid): Drought priming reduces Calligonum mongolicum sensitivity to recurrent droughts via coordinated regulation of osmolytes, antioxidants, and hormones

Arid

DOI	10.1111/plb.13619
	Drought priming reduces Calligonum mongolicum sensitivity to recurrent droughts via coordinated regulation of osmolytes, antioxidants, and hormones
	Ullah, A.; Tariq, A.; Zeng, F.; Asghar, M. A.; Sardans, J.; Penuelas, J.
通讯作者	Tariq, A ; Zeng, F
来源期刊	PLANT BIOLOGY
ISSN	1435-8603
EISSN	1438-8677
出版年	2024
英文摘要	Pre-exposure of plants to abiotic stressors may induce stress memory and improve tolerance to subsequent stresses. center dot Here, 3-month-oldCalligonum mongolicum seedlings were exposed to drought(60 days) with (primed) or without (unprimed) early drought exposure of 50 days, to determine whether this enhances seedling resistance and investigate possible underlying mechanisms. center dot Compared to unprimed, primed seedlings had higher biomass, shoot relative water content (15% and 22%), chlorophylla, chlorophyllb, and carotenoids. They also hadmore superoxide anions (O-2( center dot)) and H(2)O(2 )scavenging mechanisms through higher activity of SOD, CAT, APX, and dehydroascorbate reductase in assimilating shoots and roots, resulting in less ROS and oxidative stress damage. Plants also had higher ABA and JA but lower SA, likely reflecting an adaptive response to subsequent stress. Primed seedlings accumulated more IAA and brass inosteroids, which may account for their better growth. Accumulation of glycine betaine, pro, and total amino acids inassimilating shoots and roots of primed seedlings led to reduced osmotic stress. Drivers of responses of non-primed and primed seedlings to drought varied. Responses of primed seedlings were primarily characterized by more photo syntheticpigments, increased oxidative scavenging of O-2( center dot)and H2O2, more phytohormones and osmolytes. center dot Early drought priming of drought stress memory inC. mongolicumseedlings may pro-vide a useful management approach to improve seedling establishment in vegetation restoration programs.
英文关键词	Arid land climate change drought priming physiological acclimation subsequent or recurrent stress xerophytes
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001159485800001
WOS关键词	STRESS MEMORY ; OXIDATIVE STRESS ; ABSCISIC-ACID ; PHYSIOLOGICAL-RESPONSES ; HYDROGEN-PEROXIDE ; TREE MORTALITY ; EXOGENOUS ABA ; TOLERANCE ; PLANTS ; RESISTANCE
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/2XILL650/405096
推荐引用方式 GB/T 7714	Ullah, A.,Tariq, A.,Zeng, F.,et al. Drought priming reduces Calligonum mongolicum sensitivity to recurrent droughts via coordinated regulation of osmolytes, antioxidants, and hormones[J],2024.
APA	Ullah, A.,Tariq, A.,Zeng, F.,Asghar, M. A.,Sardans, J.,&Penuelas, J..(2024).Drought priming reduces Calligonum mongolicum sensitivity to recurrent droughts via coordinated regulation of osmolytes, antioxidants, and hormones.PLANT BIOLOGY.
MLA	Ullah, A.,et al."Drought priming reduces Calligonum mongolicum sensitivity to recurrent droughts via coordinated regulation of osmolytes, antioxidants, and hormones".PLANT BIOLOGY (2024).