气候变化领域集成服务门户(CCPortal): Ecophysiological responses to drought stress in Populus euphratica

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DOI	10.3724/SP.J.1226.2021.20025
	Ecophysiological responses to drought stress in Populus euphratica
	Zhao, ChunYan; Si, JianHua; Feng, Qi; Yu, TengFei; Luo, Huan; Qin, Jie
发表日期	2021
ISSN	1674-3822
起始页码	326
结束页码	336
卷号	13 期号:4
英文摘要	Ecophysiological responses to drought stress of Populus euphratica in Alashan Desert Eco-hydrology Experimental Research Station were investigated. Results show that under mild and moderate drought stress, stomatal length, aperture, area and density is likely to decrease in the early days, but afterwards this is likely to recovery with treatment over the passage of treatment time. Under severe drought stress, these properties appear to decline continuously. However, after 45 days of drought-stress treatment, the decline is not as noticeable as before, indicating that Populus euphratica could possibly reduce water evaporation by shutting down the stoma, leading to an improvement in its water use efficiency with better survival under drought stress conditions. The leaf area first decreases, and then increases under mild and moderate drought stress conditions, with the average values under different degree of stress found to be approximately 129.52, 120.08, 116.63 and 107.28 cm(2), respectively. Under moderate stress conditions, the leaf water potential appears to show a continuous decline where the average values under different degree of stress are found to be -1.27, -1.85, -4.29 and -4.80 MPa, respectively. In terms of proline content, the results demonstrate that this factor appears to increase significantly under moderate and severe drought stress conditions. Especially under severe drought stress condition, the content is found to be more than 700 mu g/g. Ranging over average values of 14.64 and 15.90 nmol/g under moderate and severe drought stress, respectively, Malondialdehyde content is found to increase quite rapidly under moderate and severe drought stress conditions at first, which then appears to decrease gradually with the treatment over time.
英文关键词	stomatal morphology; drought stress; Malondialdehyde; proline; Populus euphratica
WOS研究方向	Physical Geography
WOS类目	Geography, Physical
WOS关键词	LEAF GAS-EXCHANGE ; STOMATAL CONDUCTANCE ; PROLINE ; ADAPTATION ; TOLERANCE ; AREA ; ACCUMULATION ; GROWTH
WOS记录号	WOS:000686566700005
来源期刊	SCIENCES IN COLD AND ARID REGIONS
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239433
作者单位	[Zhao, ChunYan; Si, JianHua; Feng, Qi; Yu, TengFei; Luo, Huan; Qin, Jie] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, 320 West Dong Gang Rd, Lanzhou 730000, Gansu, Peoples R China; [Zhao, ChunYan; Si, JianHua; Feng, Qi; Yu, TengFei] Chinese Acad Sci, Key Lab Ecohydrol Inland River Basin, Lanzhou 730000, Gansu, Peoples R China; [Luo, Huan; Qin, Jie] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhao, ChunYan,Si, JianHua,Feng, Qi,et al. Ecophysiological responses to drought stress in Populus euphratica[J]. 中国科学院西北生态环境资源研究院,2021,13(4).
APA	Zhao, ChunYan,Si, JianHua,Feng, Qi,Yu, TengFei,Luo, Huan,&Qin, Jie.(2021).Ecophysiological responses to drought stress in Populus euphratica.SCIENCES IN COLD AND ARID REGIONS,13(4).
MLA	Zhao, ChunYan,et al."Ecophysiological responses to drought stress in Populus euphratica".SCIENCES IN COLD AND ARID REGIONS 13.4(2021).