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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1111/nph.17461
|2 doi
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|a pubmed24n1084.xml
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|a (DE-627)NLM325350442
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|a (NLM)33983649
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Coopman, Rafael E
|e verfasserin
|4 aut
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| 245 |
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|a Harvesting water from unsaturated atmospheres
|b deliquescence of salt secreted onto leaf surfaces drives reverse sap flow in a dominant arid climate mangrove, Avicennia marina
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 21.07.2021
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|a Date Revised 21.07.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2021 The Authors New Phytologist © 2021 New Phytologist Foundation.
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|a 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
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4 |
|a Journal Article
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|a Research Support, Non-U.S. Gov't
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4 |
|a deliquescence
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4 |
|a foliar water uptake
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| 650 |
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|a hydraulic safety
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| 650 |
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|a low intensity leaf wetting
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| 650 |
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|a reverse sap flow
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| 650 |
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4 |
|a salt secretion
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| 650 |
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4 |
|a water storage capacitance
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| 650 |
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|a Water
|2 NLM
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| 650 |
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7 |
|a 059QF0KO0R
|2 NLM
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| 700 |
1 |
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|a Nguyen, Hoa T
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Mencuccini, Maurizio
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Oliveira, Rafael S
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Sack, Lawren
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Lovelock, Catherine E
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ball, Marilyn C
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t The New phytologist
|d 1979
|g 231(2021), 4 vom: 01. Aug., Seite 1401-1414
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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| 773 |
1 |
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|g volume:231
|g year:2021
|g number:4
|g day:01
|g month:08
|g pages:1401-1414
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|u http://dx.doi.org/10.1111/nph.17461
|3 Volltext
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|d 231
|j 2021
|e 4
|b 01
|c 08
|h 1401-1414
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