气候变化领域集成服务门户(CCPortal): Non-structural carbohydrates mediate seasonal water stress across Amazon forests

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DOI	10.1038/s41467-021-22378-8
	Non-structural carbohydrates mediate seasonal water stress across Amazon forests
	Signori-Müller C.; Oliveira R.S.; Barros F.V.; Tavares J.V.; Gilpin M.; Diniz F.C.; Zevallos M.J.M.; Yupayccana C.A.S.; Acosta M.; Bacca J.; Chino R.S.C.; Cuellar G.M.A.; Cumapa E.R.M.; Martinez F.; Mullisaca F.M.P.; Nina A.; Sanchez J.M.B.; da Silva L.F.; Tello L.; Tintaya J.S.; Ugarteche M.T.M.; Baker T.R.; Bittencourt P.R.L.; Borma L.S.; Brum M.; Castro W.; Coronado E.N.H.; Cosio E.G.; Feldpausch T.R.; Fonseca L.A.M.; Gloor E.; Llampazo G.F.; Malhi Y.; Mendoza A.M.; Moscoso V.C.; Araujo-Murakami A.; Phillips O.L.; Salinas N.; Silveira M.; Talbot J.; Vasquez R.; Mencuccini M.; Galbraith D.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	Non-structural carbohydrates (NSC) are major substrates for plant metabolism and have been implicated in mediating drought-induced tree mortality. Despite their significance, NSC dynamics in tropical forests remain little studied. We present leaf and branch NSC data for 82 Amazon canopy tree species in six sites spanning a broad precipitation gradient. During the wet season, total NSC (NSCT) concentrations in both organs were remarkably similar across communities. However, NSCT and its soluble sugar (SS) and starch components varied much more across sites during the dry season. Notably, the proportion of leaf NSCT in the form of SS (SS:NSCT) increased greatly in the dry season in almost all species in the driest sites, implying an important role of SS in mediating water stress in these sites. This adjustment of leaf NSC balance was not observed in tree species less-adapted to water deficit, even under exceptionally dry conditions. Thus, leaf carbon metabolism may help to explain floristic sorting across water availability gradients in Amazonia and enable better prediction of forest responses to future climate change. © 2021, The Author(s).
语种	英语
scopus关键词	carbohydrate; carbohydrate; water; carbohydrate; climate change; concentration (composition); crassulacean acid metabolism; drought; dry season; forest ecosystem; metabolism; precipitation (climatology); seasonal variation; tree; water availability; water stress; Amazonas (Brazil); Article; canopy; carbon metabolism; climate change; concentration ratio; controlled study; dry season; leaf water potential; plant metabolism; precipitation; predictive value; rainy season; seasonal variation; tropical rain forest; water availability; water stress; Bolivia; Brazil; carbohydrate metabolism; classification; drought; forest; geography; metabolism; Peru; plant leaf; season; tree; tropic climate; Amazonia; Bolivia; Brazil; Carbohydrate Metabolism; Carbohydrates; Climate Change; Droughts; Forests; Geography; Peru; Plant Leaves; Seasons; Sugars; Trees; Tropical Climate; Water
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250711
作者单位	Department of Plant Biology, Institute of Biology, Programa de Pós Graduação em Biologia Vegetal, University of Campinas, Campinas, Brazil; School of Geography, University of Leeds, Leeds, United Kingdom; Department of Plant Biology, Institute of Biology, University of Campinas, Campinas, Brazil; Geography, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom; Department of Plant Biology, Institute of Biology, Programa de Pós Graduação em Ecologia, University of Campinas, Campinas, Brazil; Universidad Nacional de San Antonio Abad del Cusco, Cusco, Peru; Pontificia Universidad Católica del Perú, Lima, Peru; Programa de Pós-Graduação em Ecologia e Manejo de Recursos Naturais, Universidade Federal do Acre, Rio Branco, Brazil; Museo de Historia Natural Noel Kempff Mercado, Universidad Autonoma Gabriel Rene Moreno, Santa Cruz, Bolivia; Earth System Science Centre, National Institute for Space Research, São José dos Campos, Brazil; Department of Ecology and Evolutionary Biolo...
推荐引用方式 GB/T 7714	Signori-Müller C.,Oliveira R.S.,Barros F.V.,et al. Non-structural carbohydrates mediate seasonal water stress across Amazon forests[J],2021,12(1).
APA	Signori-Müller C..,Oliveira R.S..,Barros F.V..,Tavares J.V..,Gilpin M..,...&Galbraith D..(2021).Non-structural carbohydrates mediate seasonal water stress across Amazon forests.Nature Communications,12(1).
MLA	Signori-Müller C.,et al."Non-structural carbohydrates mediate seasonal water stress across Amazon forests".Nature Communications 12.1(2021).