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Rapid response of the carbon balance strategy in Robinia pseudoacacia and Amorpha fruticosa to recurrent drought
Yan, Weiming1; Zhong, Yangquanwei2; Shangguan, Zhouping1; Shangguan, ZP (reprint author), Northwest A&F Univ, Xinong Rd 26, Yangling 712100, Shaanxi, Peoples R China.
SubtypeArticle
2017
Source PublicationENVIRONMENTAL AND EXPERIMENTAL BOTANY
ISSN0098-8472
description.correspondentemailshangguan@ms.iswc.ac.cn
Volume138Pages:46-56
AbstractDrought 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.
KeywordDrought Cycles Physiological Responses Rewatered Soil Respiration Non-structural Carbohydrates
Subject AreaPlant Sciences ; Environmental Sciences & Ecology
DOI10.1016/j.envexpbot.2017.03.009
URL查看原文
Indexed BySCI
Publication PlaceOXFORD
Language英语
WOS IDWOS:000404498500005
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Funding OrganizationNational 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]
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/7978
Collection水保所科研产出--SCI_2017--SCI
Corresponding AuthorShangguan, ZP (reprint author), Northwest A&F Univ, Xinong Rd 26, Yangling 712100, Shaanxi, Peoples R China.
Affiliation1.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
Recommended Citation
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.
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