干旱区生态环境知识资源中心(Arid): Harvesting water from unsaturated atmospheres: deliquescence of salt secreted onto leaf surfaces drives reverse sap flow in a dominant arid climate mangrove, Avicennia marina

Arid

DOI	10.1111/nph.17461
	Harvesting water from unsaturated atmospheres: deliquescence of salt secreted onto leaf surfaces drives reverse sap flow in a dominant arid climate mangrove, Avicennia marina
	Coopman, Rafael E.; Nguyen, Hoa T.; Mencuccini, Maurizio; Oliveira, Rafael S.; Sack, Lawren; Lovelock, Catherine E.; Ball, Marilyn C.
通讯作者	Coopman, RE (corresponding author), Australian Natl Univ, Res Sch Biol, Plant Sci Div, Acton, ACT 2601, Australia. ; Coopman, RE (corresponding author), Univ Austral Chile, Fac Ciencias Forestales & Recursos Nat, Inst Conservac Biodiversidad & Terr, Ecophysiol Lab Forest Conservat, Campus Isla Teja,Casilla 567, Valdivia, Chile.
来源期刊	NEW PHYTOLOGIST
ISSN	0028-646X
EISSN	1469-8137
出版年	2021
英文摘要	The mangrove Avicennia marina adjusts internal salt concentrations by foliar salt secretion. Deliquescence of accumulated salt causes leaf wetting that may provide a water source for salt-secreting plants in arid coastal wetlands where high nocturnal humidity can usually support deliquescence whereas rainfall events are rare. We tested the hypotheses that salt deliquescence on leaf surfaces can drive top-down rehydration, and that such absorption of moisture from unsaturated atmospheres makes a functional contribution to dry season shoot water balances. Sap flow and water relations were monitored to assess the uptake of atmospheric water by branches during shoot wetting events under natural and manipulated microclimatic conditions. Reverse sap flow rates increased with increasing relative humidity from 70% to 89%, consistent with function of salt deliquescence in harvesting moisture from unsaturated atmospheres. Top-down rehydration elevated branch water potentials above those possible from root water uptake, subsidising transpiration rates and reducing branch vulnerability to hydraulic failure in the subsequent photoperiod. Absorption of atmospheric moisture harvested through deliquescence of salt on leaf surfaces enhances water balances of Avicennia marina growing in hypersaline wetlands under arid climatic conditions. Top-down rehydration from these frequent, low intensity wetting events contributes to prevention of carbon starvation and hydraulic failure during drought.
英文关键词	deliquescence foliar water uptake hydraulic safety low intensity leaf wetting reverse sap flow salt secretion water storage capacitance
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000660636000001
WOS关键词	SEMPERVIRENS D. DON ; RADIAL TRANSFER ; PLANT CUTICLES ; LEAVES ; ABSORPTION ; STORAGE ; DESERT ; PHLOEM ; XYLEM ; EXPRESSION
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
来源机构	University of California, Los Angeles
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352411
作者单位	[Coopman, Rafael E.; Nguyen, Hoa T.; Ball, Marilyn C.] Australian Natl Univ, Res Sch Biol, Plant Sci Div, Acton, ACT 2601, Australia; [Coopman, Rafael E.] Univ Austral Chile, Fac Ciencias Forestales & Recursos Nat, Inst Conservac Biodiversidad & Terr, Ecophysiol Lab Forest Conservat, Campus Isla Teja,Casilla 567, Valdivia, Chile; [Nguyen, Hoa T.] Vietnam Natl Univ Agr, Fac Agron, Dept Bot, Hanoi 131000, Vietnam; [Mencuccini, Maurizio] Univ Autonoma Barcelona, CREAF, Barcelona 08193, Spain; [Oliveira, Rafael S.] Univ Estadual Campinas, Inst Biol, Dept Plant Biol, UNICAMP, CP6109, Campinas, SP, Brazil; [Sack, Lawren] Univ Calif Los Angeles, Dept Ecol & Evolut, 621 Charles E Young Dr South, South Los Angeles, CA 90095 USA; [Lovelock, Catherine E.] Univ Queensland, Sch Biol Sci, St Lucia, Qld 4072, Australia
推荐引用方式 GB/T 7714	Coopman, Rafael E.,Nguyen, Hoa T.,Mencuccini, Maurizio,et al. Harvesting water from unsaturated atmospheres: deliquescence of salt secreted onto leaf surfaces drives reverse sap flow in a dominant arid climate mangrove, Avicennia marina[J]. University of California, Los Angeles,2021.
APA	Coopman, Rafael E..,Nguyen, Hoa T..,Mencuccini, Maurizio.,Oliveira, Rafael S..,Sack, Lawren.,...&Ball, Marilyn C..(2021).Harvesting water from unsaturated atmospheres: deliquescence of salt secreted onto leaf surfaces drives reverse sap flow in a dominant arid climate mangrove, Avicennia marina.NEW PHYTOLOGIST.
MLA	Coopman, Rafael E.,et al."Harvesting water from unsaturated atmospheres: deliquescence of salt secreted onto leaf surfaces drives reverse sap flow in a dominant arid climate mangrove, Avicennia marina".NEW PHYTOLOGIST (2021).