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Resource Segmentation: A New Dimension of the Segmentation Hypothesis in Drought Adaptive Strategies and Its Links to Tree Growth Performance

文献类型：期刊论文

作者Yue, Chen2,3; Wang, Huimin2,3; Meinzer, Frederick C.4; Dai, Xiaoqin2,3; Meng, Shengwang2,3; Shao, Hui2,3; Kou, Liang2,3; Gao, Decai2,3; Chen, Fusheng1; Fu, Xiaoli1,2,3
刊名PLANT CELL AND ENVIRONMENT
出版日期2025-01-20
关键词carbohydrate storage drought adaptation hydraulic capacitance intraspecific variation leaf anatomy twig anatomy
ISSN号0140-7791
DOI10.1111/pce.15396
产权排序1
文献子类Article ; Early Access
英文摘要The segmentation hypothesis, a framework for understanding plant drought adaptive strategy, has long been based on hydraulic resistance and vulnerability. Storage of water and carbohydrate resources is another critical function and shapes plant drought adaption and fitness together with hydraulic efficiency and vulnerability. However, patterns and implications of the interdependency of stored water and carbohydrate resources in the context of the segmentation hypothesis are poorly understood. We measured resource pools (relative water content [RWC] soluble sugar [SS] and starch [S]) and anatomical features of leaves and supporting twigs for 36 trees in a subtropical population during the dry season when the Budyko's aridity index was 0.362. For each tree, we rank-transformed the RWC (RWCrank), SS (SSrank), and S (Srank) and characterised the resource segmentation within organs using Ln(RWCrank/SSrank) and Ln(RWCrank/Srank). We also assessed the resource segmentation between organs using the difference in resource pools between leaves and twigs (RWCleaf-twig, SSleaf-twig, and Sleaf-twig). Resource segmentation was much more effective than the organ-level resource pool alone in predicting intraspecific variation of tree growth rates. Fast-growing individuals were mainly characterised by lower leaf Ln(RWCrank/SSrank), higher twig Ln(RWCrank/SSrank), and lower SSleaf-twig. The resource segmentation strategy of fast-growing individuals was associated with anatomical attributes that facilitate phloem SS loading and unloading and thus water supply upstream. Our results highlight that resource segmentation is an important dimension of plant drought adaptive strategies and enables better prediction of tree growth vigour than resource pool attributes individually.
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WOS关键词LEAF HYDRAULIC CONDUCTANCE ; WATER-STORAGE CAPACITY ; NONSTRUCTURAL CARBON ; FOREST TREES ; CARBOHYDRATE DYNAMICS ; STOMATAL CONDUCTANCE ; PLANT HYDRAULICS ; XYLEM TENSION ; CO2 EFFLUX ; DRY-SEASON
WOS研究方向Plant Sciences
语种英语
WOS记录号WOS:001399674500001
出版者WILEY
源URL[http://ir.igsnrr.ac.cn/handle/311030/211381]  
专题千烟洲站森林生态系统研究中心_外文论文
通讯作者Fu, Xiaoli
作者单位1.Jiangxi Agr Univ, Coll Forestry, Jiangxi Prov Key Lab Silviculture, Nanchang, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Qianyanzhou Ecol Res Stn, Beijing, Peoples R China;
3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China;
4.USDA Forest Serv, Pacific Northwest Res Stn, Corvallis, OR USA;
推荐引用方式
GB/T 7714		 Yue, Chen,Wang, Huimin,Meinzer, Frederick C.,et al. Resource Segmentation: A New Dimension of the Segmentation Hypothesis in Drought Adaptive Strategies and Its Links to Tree Growth Performance[J]. PLANT CELL AND ENVIRONMENT,2025.
APA Yue, Chen.,Wang, Huimin.,Meinzer, Frederick C..,Dai, Xiaoqin.,Meng, Shengwang.,...&Fu, Xiaoli.(2025).Resource Segmentation: A New Dimension of the Segmentation Hypothesis in Drought Adaptive Strategies and Its Links to Tree Growth Performance.PLANT CELL AND ENVIRONMENT.
MLA Yue, Chen,et al."Resource Segmentation: A New Dimension of the Segmentation Hypothesis in Drought Adaptive Strategies and Its Links to Tree Growth Performance".PLANT CELL AND ENVIRONMENT (2025).

入库方式： OAI收割

来源：地理科学与资源研究所

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