Rapid response of the carbon balance strategy in Robinia pseudoacacia and Amorpha fruticosa to recurrent drought

doi:10.1016/j.envexpbot.2017.03.009

ISWC OpenIR > 水保所科研产出--SCI > 2017--SCI

	Rapid response of the carbon balance strategy in Robinia pseudoacacia and Amorpha fruticosa to recurrent drought
	Yan, Weiming 1; Zhong, Yangquanwei 2; Shangguan, Zhouping 1; Shangguan, ZP (reprint author), Northwest A&F Univ, Xinong Rd 26, Yangling 712100, Shaanxi, Peoples R China.
文章类型	Article
	2017
发表期刊	ENVIRONMENTAL AND EXPERIMENTAL BOTANY
ISSN	0098-8472
通讯作者邮箱	shangguan@ms.iswc.ac.cn
卷号	138 页码:46-56
摘要	Drought is becoming more severe and frequent in some regions due to climate change, which leads to carbon imbalance in plants and has gained significant attention. However, it remains unclear how the carbon balance responds to recurrent drought and recovery. To understand the carbon balance response to recurrent drought, we monitored dynamic changes in the physiological traits of two species during cycles of drought and recovery, Amorpha fruticosa and Robinia pseudoacacia, which are planted widely on the Loess Plateau. We found that the two species performed similarly in response to drought; both showed growth cessation and a reduction of carbon assimilation and respiration under cycles of drought and recovery. The soil water content (SWC) at the stress point of the fluorescence parameters was lower than those of gas exchange and water potential, which were higher in the second drought than in the first drought, except aboveground respiration, which may enhance the risk of drought-related mortality. After rewatered, leaf photosynthesis recovered fully and root respiration increased; however, the aboveground carbon flux of the plants did not fully recover due to leaf shedding. In addition, drought caused a decrease in the stem diameter, which impeded phloem function and carbon translocation and redistribution, resulting in a decrease in non-structural carbohydrates in local plant tissues under drought in both species. Furthermore, A. fruticosa showed higher total non-structural carbohydrates. Our results suggest that plants that had experienced drought were more sensitive when faced with subsequent drought, and recurrent drought enhanced the risk of mortality in plants. (C) 2017 Published by Elsevier B.V.
关键词	Drought Cycles Physiological Responses Rewatered Soil Respiration Non-structural Carbohydrates
学科领域	Plant Sciences ; Environmental Sciences & Ecology
DOI	10.1016/j.envexpbot.2017.03.009
URL	查看原文
收录类别	SCI
出版地	OXFORD
语种	英语
WOS记录号	WOS:000404498500005
出版者	PERGAMON-ELSEVIER SCIENCE LTD
项目资助者	National Natural Science Foundation of China [41390463]; National Key Research and Development Program of China [2016YFC0501605] ; National Natural Science Foundation of China [41390463]; National Key Research and Development Program of China [2016YFC0501605]
引用统计
文献类型	期刊论文
条目标识符	sbir.nwafu.edu.cn/handle/361005/7978
专题	水保所科研产出--SCI_2017--SCI
通讯作者	Shangguan, ZP (reprint author), Northwest A&F Univ, Xinong Rd 26, Yangling 712100, Shaanxi, Peoples R China.
作者单位	1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Northwestern Polytech Univ, Key Lab Space Biosci & Biotechnol, Ctr Ecol & Environm Sci, Xian 710072, Peoples R China
推荐引用方式 GB/T 7714	Yan, Weiming,Zhong, Yangquanwei,Shangguan, Zhouping,et al. Rapid response of the carbon balance strategy in Robinia pseudoacacia and Amorpha fruticosa to recurrent drought[J]. ENVIRONMENTAL AND EXPERIMENTAL BOTANY,2017,138:46-56.
APA	Yan, Weiming,Zhong, Yangquanwei,Shangguan, Zhouping,&Shangguan, ZP .(2017).Rapid response of the carbon balance strategy in Robinia pseudoacacia and Amorpha fruticosa to recurrent drought.ENVIRONMENTAL AND EXPERIMENTAL BOTANY,138,46-56.
MLA	Yan, Weiming,et al."Rapid response of the carbon balance strategy in Robinia pseudoacacia and Amorpha fruticosa to recurrent drought".ENVIRONMENTAL AND EXPERIMENTAL BOTANY 138(2017):46-56.