干旱区生态环境知识资源中心(Arid): Antecedent soil water content and vapor pressure deficit interactively control water potential in Larrea tridentata

Arid

DOI	10.1111/nph.15374
	Antecedent soil water content and vapor pressure deficit interactively control water potential in Larrea tridentata
	Guo, Jessica S.1,2; Ogle, Kiona 1,2,3
通讯作者	Guo, Jessica S.
来源期刊	NEW PHYTOLOGIST
ISSN	0028-646X
EISSN	1469-8137
出版年	2019
卷号	221 期号:1 页码:218-232
英文摘要	Plant water potential psi is regulated by stomatal responses to atmospheric moisture demand D and soil water availability W, but the timescales of influence and interactions between these drivers of plant psi are poorly understood. Here, we quantify the effects of antecedent D and W on plant psi in the desert shrub Larrea tridentata. Repeated measurements of plant baseline water potential psi(B) and diurnal water potential psi(D) were analyzed in a Bayesian framework to evaluate the influence of antecedent D and W at daily and subdaily timescales. Both psi(B) and psi(D) exhibited negative, 2- to 4-d lagged responses to daily-scale D; conversely, plant psi(D) responded almost instantaneously to subdaily D, though the direction of this response depended on antecedent moisture conditions. Plant psi(B) and psi(D) responded positively and immediately (no lag) to shallow W, which contrasts the negative, lagged (6-7 d) response to deep W. The changing sensitivity of psi(D) to subdaily D highlights shifting modes of plant psi regulation: D effects on psi(D) range from negative to neutral to positive depending on past conditions and time of day. Explicit consideration of antecedent conditions across multiple timescales can reveal important complexities in plant responses.
英文关键词	antecedent conditions atmospheric drought hysteresis Larrea tridentata (creosotebush) soil moisture stomatal regulation temporal lags water potential
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000451625800023
WOS关键词	MIDDAY STOMATAL CLOSURE ; DESERT SHRUB ; DROUGHT STRESS ; HYDRAULIC CONDUCTANCE ; EVAPORATIVE DEMAND ; CIRCADIAN-RHYTHMS ; CHIHUAHUAN DESERT ; RAINFALL EVENTS ; CARBON-DIOXIDE ; SONORAN DESERT
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/2XILL650/217776
作者单位	1.No Arizona Univ, Dept Biol Sci, Flagstaff, AZ 86011 USA; 2.No Arizona Univ, Ctr Ecosyst Sci & Soc, Flagstaff, AZ 86011 USA; 3.No Arizona Univ, Sch Informat Comp & Cyber Syst, Flagstaff, AZ 86011 USA
推荐引用方式 GB/T 7714	Guo, Jessica S.,Ogle, Kiona. Antecedent soil water content and vapor pressure deficit interactively control water potential in Larrea tridentata[J],2019,221(1):218-232.
APA	Guo, Jessica S.,&Ogle, Kiona.(2019).Antecedent soil water content and vapor pressure deficit interactively control water potential in Larrea tridentata.NEW PHYTOLOGIST,221(1),218-232.
MLA	Guo, Jessica S.,et al."Antecedent soil water content and vapor pressure deficit interactively control water potential in Larrea tridentata".NEW PHYTOLOGIST 221.1(2019):218-232.