Knowledge Resource Center for Ecological Environment in Arid Area
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
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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). |
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