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  2. 地理科学与资源研究所
  3. 中国科学院地理科学与资源研究所
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The coordination of dehydration tolerance and avoidance in oaks is mediated by leaf habit across a precipitation gradient

文献类型：期刊论文

作者Liang, Xingyun2; Cui, Bo2,3; Wang, Xiaoyi2; Liu, Hui2; He, Pengcheng2; Yin, Deyi2; Tang, Weize4; Wang, Yangsiding2,3; Liao, Liangning2,3; Xia, Qiang2,3
刊名FUNCTIONAL ECOLOGY
出版日期2026-01-12
卷号N/A
关键词dehydration avoidance dehydration tolerance drought adaptation embolism resistance hydraulic traits precipitation gradient stomatal control water storage
ISSN号0269-8463
DOI10.1111/1365-2435.70253
产权排序3
文献子类Article ; Early Access
英文摘要Forests worldwide are increasingly impacted by drought due to climate change, prompting plants to adapt through dehydration tolerance (DT) and avoidance (DA), two distinct physiological strategies. However, how these strategies are coordinated in response to varying precipitation remains unclear. To address this gap, we investigated key hydraulic traits associated with DT and DA in 11 oaks (Quercus spp.) across a broad precipitation gradient (498-1793 mm year-1) in China. Specifically, we measured three DT traits: water potential at 50% loss of hydraulic conductivity (Psi P50), leaf turgor loss point water potential (Psi TLP) and wood density (WD), as well as four DA traits: water potential at stomatal closure (Psi close), minimum leaf conductance, branch capacitance and leaf-to-sapwood area ratio (AL:AS). When analysed collectively, most traits showed no significant relationship with precipitation or aridity. However, distinct patterns emerged when data were analysed by leaf habit. In evergreens, trait variation was largely and independently explained by mean annual precipitation (MAP), with stronger DT (lower Psi P50 and Psi TLP, higher WD) and enhanced DA (smaller AL:AS) under drier conditions. In contrast, deciduous species showed weaker DT (higher Psi P50) but stronger DA (higher Psi close and lower AL:AS) as precipitation decreased, with much variance driven by interactions between MAP and mean annual temperature (MAT). Notably, DT and DA traits were strongly correlated in evergreens but weakly associated in deciduous species. Our results show that evergreen oaks rely on both DT and DA strategies for drought adaptation, whereas deciduous species primarily depend on DA mechanisms. Considering DT alone is insufficient, and incorporating multiple DA strategies is essential for a mechanistic framework to understand forest responses. We highlight the need to integrate leaf habit and complementary drought strategies into predictive models and climate-resilient forest management practices.Read the free for this article on the Journal blog. (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(dehydration tolerance)(sic)(sic)(sic)(dehydration avoidance)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic). (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(498-1793 mm)(sic)(sic)(sic)(sic)(sic)11(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic)(sic)(sic)(sic)3(sic)(sic)(sic)(sic)(sic):(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)50%(sic)(sic)(sic)(sic)(Psi P50),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(Psi TLP),(sic)(sic)(sic)(sic)(WD),(sic)(sic)4(sic)(sic)(sic)(sic)(sic):(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(Psi close),(sic)(sic)(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(AL:AS). (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)((sic)(sic)(sic)Psi P50(sic)Psi TLP,(sic)(sic)(sic)WD)(sic)(sic)(sic)(sic)((sic)(sic)(sic)AL:AS),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)((sic)(sic)(sic)Psi P50),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)((sic)(sic)(sic)Psi close,(sic)(sic)(sic)AL:AS),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic). (sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic)(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).
URL标识查看原文
WOS关键词TURGOR LOSS POINT ; DROUGHT TOLERANCE ; WOOD DENSITY ; HYDRAULIC CONDUCTIVITY ; EMBOLISM RESISTANCE ; PLANT HYDRAULICS ; TREE MORTALITY ; TRAITS ; WATER ; VULNERABILITY
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:001659506100001
出版者WILEY
源URL[http://ir.igsnrr.ac.cn/handle/311030/219628]  
专题生态系统网络观测与模拟院重点实验室_外文论文
通讯作者Ye, Qing
作者单位1.Chinese Acad Forestry, Res Inst Trop Forestry, Hainan Jianfengling Forest Ecosyst Natl Field Sci, Guangzhou, Peoples R China
2.Chinese Acad Sci, Guangdong Prov Key Lab Appl Bot, Natl Forestry & Grassland Adm Plant Conservat & Ut, Key Lab,South China Bot Garden, Guangzhou, Peoples R China;
3.Univ Chinese Acad Sci, Beijing, Peoples R China;
4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China;
推荐引用方式
GB/T 7714		 Liang, Xingyun,Cui, Bo,Wang, Xiaoyi,et al. The coordination of dehydration tolerance and avoidance in oaks is mediated by leaf habit across a precipitation gradient[J]. FUNCTIONAL ECOLOGY,2026,N/A.
APA Liang, Xingyun.,Cui, Bo.,Wang, Xiaoyi.,Liu, Hui.,He, Pengcheng.,...&Ye, Qing.(2026).The coordination of dehydration tolerance and avoidance in oaks is mediated by leaf habit across a precipitation gradient.FUNCTIONAL ECOLOGY,N/A.
MLA Liang, Xingyun,et al."The coordination of dehydration tolerance and avoidance in oaks is mediated by leaf habit across a precipitation gradient".FUNCTIONAL ECOLOGY N/A(2026).

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