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

doi:10.1016/j.envexpbot.2017.03.009

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	Rapid response of the carbon balance strategy in Robinia pseudoacacia and Amorpha fruticosa to recurrent drought
	Shangguan, Zhouping 1; Shangguan, ZP (reprint author), Northwest A&F Univ, Xinong Rd 26, Yangling 712100, Shaanxi, Peoples R China.; Yan, Weiming 1; Zhong, Yangquanwei 2
刊名	ENVIRONMENTAL AND EXPERIMENTAL BOTANY
	2017
卷号	138 页码:46-56
关键词	Drought Cycles Physiological Responses Rewatered Soil Respiration Non-structural Carbohydrates
ISSN号	0098-8472
DOI	10.1016/j.envexpbot.2017.03.009
文献子类	Article
英文摘要	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.
学科主题	Plant Sciences ; Environmental Sciences & Ecology
URL标识	查看原文
出版地	OXFORD
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000404498500005
资助机构	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] ; 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]
内容类型	期刊论文
源URL	[http://ir.iswc.ac.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	Shangguan, Zhouping,Shangguan, ZP ,Yan, Weiming,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	Shangguan, Zhouping,Shangguan, ZP ,Yan, Weiming,&Zhong, Yangquanwei.(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	Shangguan, Zhouping,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.