Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/326304
Type: Artigo
Title: Cloud Forest Trees With Higher Foliar Water Uptake Capacity And Anisohydric Behavior Are More Vulnerable To Drought And Climate Change
Author: Eller
Cleiton B.; Lima
Aline L.; Oliveira
Rafael S.
Abstract: Many tropical montane cloud forest (TMCF) trees are capable of foliar water uptake (FWU) during leaf-wetting events. In this study, we tested the hypothesis that maintenance of leaf turgor during periods of fog exposure and soil drought is related to species' FWU capacity. We conducted several experiments using apoplastic tracers, deuterium labeling and leaf immersion in water to evaluate differences in FWU among three common TMCF tree species. We also measured the effect of regular fog exposure on the leaf water potential of plants subjected to soil drought and used these data to model species' response to long-term drought. All species were able to absorb water through their leaf cuticles and/or trichomes, although the capacity to do so differed between species. During the drought experiment, the species with higher FWU capacity maintained leaf turgor for a longer period when exposed to fog, whereas the species with lower FWU exerted tighter stomatal regulation to maintain leaf turgor. Model results suggest that without fog, species with high FWU are more likely to lose turgor during seasonal droughts. We show that leaf-wetting events are essential for trees with high FWU, which tend to be more anisohydric, maintaining leaf turgor during seasonal droughts.
Subject: Apoplastic Tracers
Climate Change
Drought
Fog
Foliar Water Uptake (fwu)
Stomatal Regulation
Tropical Montane Cloud Forest (tmcf)
Turgor Loss Point
Editor: Wiley-Blackwell
Hoboken
Rights: fechado
Identifier DOI: 10.1111/nph.13952
Address: http://onlinelibrary-wiley-com.ez88.periodicos.capes.gov.br/doi/10.1111/nph.13952/full
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File SizeFormat 
000379213200013.pdf1.35 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.