干旱区生态环境知识资源中心(Arid): Embolism recovery strategies and nocturnal water loss across species influenced by biogeographic origin

Arid

DOI	10.1002/ece3.5126
	Embolism recovery strategies and nocturnal water loss across species influenced by biogeographic origin
	Zeppel, Melanie J. B.1; Anderegg, William R. L.2; Adams, Henry D.3; Hudson, Patrick 4; Cook, Alicia 5; Rumman, Rizwana 5; Eamus, Derek 5; Tissue, David T.6; Pacala, Stephen W.7
通讯作者	Zeppel, Melanie J. B.
来源期刊	ECOLOGY AND EVOLUTION
ISSN	2045-7758
出版年	2019
卷号	9 期号:9 页码:5348-5361
英文摘要	Drought-induced tree mortality is expected to increase in future climates with the potential for significant consequences to global carbon, water, and energy cycles. Xylem embolism can accumulate to lethal levels during drought, but species that can refill embolized xylem and recover hydraulic function may be able to avoid mortality. Yet the potential controls of embolism recovery, including cross-biome patterns and plant traits such as nonstructural carbohydrates (NSCs), hydraulic traits, and nocturnal stomatal conductance, are unknown. We exposed eight plant species, originating from mesic (tropical and temperate) and semi-arid environments, to drought under ambient and elevated CO2 levels, and assessed recovery from embolism following rewatering. We found a positive association between xylem recovery and NSCs, and, surprisingly, a positive relationship between xylem recovery and nocturnal stomatal conductance. Arid-zone species exhibited greater embolism recovery than mesic zone species. Our results indicate that nighttime stomatal conductance often assumed to be a wasteful use of water, may in fact be a key part of plant drought responses, and contribute to drought survival. Findings suggested distinct biome-specific responses that partially depended on species climate-of-origin precipitation or aridity index, which allowed some species to recover from xylem embolism. These findings provide improved understanding required to predict the response of diverse plant communities to drought. Our results provide a framework for predicting future vegetation shifts in response to climate change.
英文关键词	carbohydrate starvation drought-induced mortality embolism recovery embolism refilling hydraulic failure nocturnal stomatal conductance nonstructural carbohydrates xylem embolism
类型	Article
语种	英语
国家	Australia ; USA
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000467584200025
WOS关键词	LAURUS-NOBILIS ; STOMATAL CONDUCTANCE ; XYLEM EMBOLISMS ; CLIMATE-CHANGE ; DROUGHT ; CAVITATION ; WOOD ; CO2 ; TRANSPIRATION ; MECHANISMS
WOS类目	Ecology ; Evolutionary Biology
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215260
作者单位	1.Macquarie Univ, Dept Biol Sci, N Ryde, NSW, Australia; 2.Univ Utah, Sch Biol Sci, Salt Lake City, UT USA; 3.Oklahoma State Univ, Dept Plant Biol Ecol & Evolut, Stillwater, OK 74078 USA; 4.Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA; 5.Univ Technol Sydney, Sch Life Sci, Sydney, NSW, Australia; 6.Western Sydney Univ, Hawkesbury Inst Environm, Richmond, NSW, Australia; 7.Princeton Univ, Dept Ecol & Evolutionary Biol, Princeton, NJ 08544 USA
推荐引用方式 GB/T 7714	Zeppel, Melanie J. B.,Anderegg, William R. L.,Adams, Henry D.,et al. Embolism recovery strategies and nocturnal water loss across species influenced by biogeographic origin[J],2019,9(9):5348-5361.
APA	Zeppel, Melanie J. B..,Anderegg, William R. L..,Adams, Henry D..,Hudson, Patrick.,Cook, Alicia.,...&Pacala, Stephen W..(2019).Embolism recovery strategies and nocturnal water loss across species influenced by biogeographic origin.ECOLOGY AND EVOLUTION,9(9),5348-5361.
MLA	Zeppel, Melanie J. B.,et al."Embolism recovery strategies and nocturnal water loss across species influenced by biogeographic origin".ECOLOGY AND EVOLUTION 9.9(2019):5348-5361.