Contrasting dynamics of leaf potential and gas exchange during progressive drought cycles and recovery in Amorpha fruticosa and Robinia pseudoacacia

doi:10.1016/j.revpalbo.2017.08.002

	Contrasting dynamics of leaf potential and gas exchange during progressive drought cycles and recovery in Amorpha fruticosa and Robinia pseudoacacia
	Yan, Weiming ; Zheng, Shuxia 1; Zhong, Yangquanwei ; Shangguan, Zhouping
	2017
发表期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
卷号	7
摘要	Leaf gas exchange is closely associated with water relations; however, less attention has been given to this relationship over successive drought events. Dynamic changes in gas exchange and water potential in the seedlings of two woody species, Amorpha fruticosa and Robinia pseudoacacia, were monitored during recurrent drought. The pre-dawn leaf water potential declined in parallel with gas exchange in both species, and sharp declines in gas exchange occurred with decreasing water potential. A significant correlation between pre-dawn water potential and gas exchange was observed in both species and showed a right shift in R. pseudoacacia in the second drought. The results suggested that stomatal closure in early drought was mediated mainly by elevated foliar abscisic acid (ABA) in R. pseudoacacia, while a shift from ABA-regulated to leaf-water-potential-driven stomatal closure was observed in A. fruticosa. After re-watering, the pre-dawn water potential recovered quickly, whereas stomatal conductance did not fully recover from drought in R. pseudoacacia, which affected the ability to tightly control transpiration post-drought. The dynamics of recovery from drought suggest that stomatal behavior post-drought may be restricted mainly by hydraulic factors, but non-hydraulic factors may also be involved in R. pseudoacacia.
学科领域	Plant Sciences ; Paleontology
DOI	10.1016/j.revpalbo.2017.08.002
收录类别	SCI
语种	英语
WOS关键词	WATER RELATIONS ; PHYSIOLOGICAL-RESPONSES ; PHOTOSYNTHESIS ; STRESS ; CARBON ; HYDRAULICS ; ROOT ; LIMITATIONS ; MORTALITY ; SEEDLINGS
WOS记录号	WOS:000417671300006
出版者	NATURE PUBLISHING GROUP
文献子类	Article
出版地	LONDON
资助机构	National Key Research and Development Program of China [2016YFC0501605] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41390463] ; National Key Technology RD ProgramNational Key Technology R&D Program [2015BAC01B03] ; Postdoctoral Innovation Talent Support Program [BX201700200] ; Open Foundation of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau [A314021402-1705]
作者邮箱	shangguan@ms.iswc.ac.cn
作品OA属性	Green Submitted
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/22324
专题	植被与环境变化国家重点实验室
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.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Yan, Weiming,Zheng, Shuxia,Zhong, Yangquanwei,et al. Contrasting dynamics of leaf potential and gas exchange during progressive drought cycles and recovery in Amorpha fruticosa and Robinia pseudoacacia[J]. SCIENTIFIC REPORTS,2017,7.
APA	Yan, Weiming,Zheng, Shuxia,Zhong, Yangquanwei,&Shangguan, Zhouping.(2017).Contrasting dynamics of leaf potential and gas exchange during progressive drought cycles and recovery in Amorpha fruticosa and Robinia pseudoacacia.SCIENTIFIC REPORTS,7.
MLA	Yan, Weiming,et al."Contrasting dynamics of leaf potential and gas exchange during progressive drought cycles and recovery in Amorpha fruticosa and Robinia pseudoacacia".SCIENTIFIC REPORTS 7(2017).

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