Interannual dynamics of stemwood nonstructural carbohydrates in temperate forest trees surrounding drought

作     者：Meghan J.Blumstein Morgan E.Furze Meghan J.Blumstein;Morgan E.Furze

作者机构：Department of Organismic and Evolutionary BiologyHarvard University26 Oxford StCambridgeMA 02138USA Civil and Environmental EngineeringMassachusetts Institute of Technology77 Massachusetts AveRoom 1-290CambridgeMA 02139USA Department of Botany and Plant PathologyDepartment of Forestry and Natural ResourcesPurdue University915 W State StreetWest LafayetteIN 47907USA 

出 版 物：《Journal of Forestry Research》 (林业研究（英文版）)

年 卷 期：2023年第34卷第1期

页      面：77-86页

核心收录：

学科分类：07[理学] 0713[理学-生态学] 

基　　金：the National Science Foundation’s Graduate Research Fellowship (Grant Nos.DGE-1144152 and DGE-1745303) the Garden Club of New Jersey 

主　　题：Drought Nonstructural carbohydrates Starch metabolism Forest trees 

摘      要：Interactions between water and carbon dynamics underlie drought-related tree *** whole-tree water relations have been shown to play a key role in the response to and recovery from drought,the role of nonstructural carbohydrates(NSC) and how their storage and allocation changes surrounding drought events deserves further attention and is critical for understanding tree ***,we quantified in situ NSC responses of temperate forest trees to the 2016 drought in the northeastern United *** and starch concentrations were measured in the stemwood of five tree species from 2014 to 2019,which allowed us to monitor NSCs in relation to climatic conditions before,during,and after the natural *** found that immediately following the drought,measured stemwood NSC concentrations ***,NSC concentrations rebounded quickly within three ***,trees allocated proportionally more to starch than to sugars following the 2016 *** winter 2017,starch comprised 45% of total stemwood stores,whereas starch made up only 1-2% in other ***,we modeled and assessed the climatic drivers of total NSC concentrations in the *** in total NSC concentrations was significantly predicted by the previous year’s temperature,precipitation,and standardized precipitation-evapotranspiration index(SPEI),with stemwood concentrations decreasing following hotter,drier periods and increasing following cooler,wetter ***,our work provides insight into the climatic drivers of NSC storage and highlights the important role that a tree’s carbon economy may play in its response and recovery to environmental stress.