Trade-offs between xylem water and carbohydrate storage among 24 coexisting subtropical understory shrub species spanning a spectrum of isohydry

doi:10.1093/treephys/tpaa138

	Trade-offs between xylem water and carbohydrate storage among 24 coexisting subtropical understory shrub species spanning a spectrum of isohydry
	Jiang, Peipei 1,3; Meinzer, Frederick C.2; Fu, Xiaoli 1; Kou, Liang 1; Dai, Xiaoqin 1; Wang, Huimin 1
刊名	TREE PHYSIOLOGY
	2021-03-01
卷号	41 期号:3 页码:403-415
关键词	hydraulic capacitance isohydry leaf water potential nonstructural carbohydrates photosynthesis
ISSN号	0829-318X
DOI	10.1093/treephys/tpaa138
通讯作者	Fu, Xiaoli(fuxl@igsnrr.ac.cn) ; Wang, Huimin(wanghm@igsnrr.ac.cn)
英文摘要	Hydraulic capacitance and carbohydrate storage are two drought adaptation strategies of woody angiosperms. However, we currently lack information on their associations and how they are associated with species' degree of isohydry. We measured total stem xylem nonstructural carbohydrate (NSC) concentration in the dry and wet seasons, xylem hydraulic capacitance, native leaf water potentials, pressure-volume curve parameters and photosynthetic performance in 24 woody understory species differing in their degree of isohydry. We found a trade-off between xylem water and carbohydrate storage both in storage capacitance and along a spectrum of isohydry. Species with higher hydraulic capacitance had lower native NSC storage. The less isohydric species tended to show greater NSC depletion in the dry season and have more drought-tolerant leaves. In contrast, the more isohydric species had higher hydraulic capacitance, which may enhance their drought avoidance capacity. In these species, leaf flushing in the wet season and higher photosynthetic rates in the dry season resulted in accumulation rather than depletion of NSC in the dry season. Our results provide new insights into the mechanisms through which xylem storage functions determine co-occurring species' drought adaptation strategies and improve our capacity to predict community assembly processes under drought.
资助项目	National Natural Science Foundations of China[41830646] ; National Natural Science Foundations of China[31730014] ; National Natural Science Foundations of China[41671224]
WOS研究方向	Forestry
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000637330800005
资助机构	National Natural Science Foundations of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/161774]
专题	中国科学院地理科学与资源研究所
通讯作者	Fu, Xiaoli; Wang, Huimin
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Qianyanzhou Ecol Res Stn, Beijing 100101, Peoples R China 2.US Forest Serv, USDA, Pacific Northwest Res Stn, 3200 SW Jefferson Way, Corvallis, OR 97331 USA 3.Shandong Normal Univ, Coll Life Sci, Key Lab Plant Stress Res, Jinan 250014, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Peipei,Meinzer, Frederick C.,Fu, Xiaoli,et al. Trade-offs between xylem water and carbohydrate storage among 24 coexisting subtropical understory shrub species spanning a spectrum of isohydry[J]. TREE PHYSIOLOGY,2021,41(3):403-415.
APA	Jiang, Peipei,Meinzer, Frederick C.,Fu, Xiaoli,Kou, Liang,Dai, Xiaoqin,&Wang, Huimin.(2021).Trade-offs between xylem water and carbohydrate storage among 24 coexisting subtropical understory shrub species spanning a spectrum of isohydry.TREE PHYSIOLOGY,41(3),403-415.
MLA	Jiang, Peipei,et al."Trade-offs between xylem water and carbohydrate storage among 24 coexisting subtropical understory shrub species spanning a spectrum of isohydry".TREE PHYSIOLOGY 41.3(2021):403-415.