气候变化领域集成服务门户(CCPortal): More sensitive to drought of young tissues with weak water potential adjustment capacity in two desert shrubs

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DOI	10.1016/j.scitotenv.2021.148103
	More sensitive to drought of young tissues with weak water potential adjustment capacity in two desert shrubs
	Huo, Jianqiang; Shi, Yafei; Zhang, Hongxia; Hu, Rui; Huang, Lei; Zhao, Yang; Zhang, Zhishan
通讯作者	Zhao, Y ; Zhang, ZS (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Res & Expt Stn, 320 Donggang West Rd, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	0048-9697
EISSN	1879-1026
卷号	790
英文摘要	Water is the main limiting factor for survival and growth for desert plants, and plants can alleviate water deficits under drought by adjusting water potential (W). However, the water potential adjustment capacity and watersensitivity at the tissue level among shrub species remains unclear. The objective of this study was to evaluate water potential adjustment capacity and water-sensitivity of different tissues in Artemisia ordosica and Caragana korshinskii through calculating the water relation parameters from pressure-volume (P-V) curves. The present study found that the sensitivity coefficients, -1/i3 and -1/b, were gradually decreased with increasing degree of lignification in A. ordosica and C. korshinskii, suggesting that younger tissues with low lignification are more sensitive to water deficit. Additionally, the younger tissues with more negative osmotic potential at full turgor (W,, sat), water potential at turgor loss point (Wtlp), and lower the bulk modulus of elasticity (o), the relative water deficit at turgor loss point (RWDtlp), apoplastic water fraction (AWF) and total hydraulic capacitance (Ctotal), which indicated that younger tissues have stronger turgor adjustment capacity compared to osmotic adjustment capacity and them were more easily lose water during times of decreased water potential because of higher cell wall elasticity and weaker water storage capacity. Collectively, the present study highlighted that younger tissues are more sensitive to drought due to their weaker water potential adjustment capacity and pro- vided critical insight into water physiological mechanism or sensitivity of species to drought. (c) 2021 Elsevier B.V. All rights reserved.
关键词	TURGOR LOSS POINT CARAGANA-KORSHINSKII TENGGER DESERT OSMOTIC ADJUSTMENT WOODY-PLANTS SOIL-WATER TOLERANCE MORTALITY DYNAMICS PHOTOSYNTHESIS
英文关键词	Pressure-volume curve; Relationship between parameters; Water potential; Water relation parameters; Sensitivity
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000685026900013
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254306
作者单位	[Huo, Jianqiang; Shi, Yafei; Zhang, Hongxia; Hu, Rui; Huang, Lei; Zhao, Yang; Zhang, Zhishan] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Res & Expt Stn, 320 Donggang West Rd, Lanzhou 730000, Peoples R China; [Huo, Jianqiang; Shi, Yafei] Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Huo, Jianqiang,Shi, Yafei,Zhang, Hongxia,et al. More sensitive to drought of young tissues with weak water potential adjustment capacity in two desert shrubs[J]. 中国科学院西北生态环境资源研究院,2021,790.
APA	Huo, Jianqiang.,Shi, Yafei.,Zhang, Hongxia.,Hu, Rui.,Huang, Lei.,...&Zhang, Zhishan.(2021).More sensitive to drought of young tissues with weak water potential adjustment capacity in two desert shrubs.SCIENCE OF THE TOTAL ENVIRONMENT,790.
MLA	Huo, Jianqiang,et al."More sensitive to drought of young tissues with weak water potential adjustment capacity in two desert shrubs".SCIENCE OF THE TOTAL ENVIRONMENT 790(2021).