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	Variation in Populus euphratica foliar carbon isotope composition and osmotic solute for different groundwater depths in an arid region of China
	Si, Jianhua; Feng, Qi; Yu, Tengfei; Zhao, Chunyan; Li, Wei
刊名	ENVIRONMENTAL MONITORING AND ASSESSMENT
	2015-11-01
卷号	187期号:11页码:15
关键词	Water use efficiency Stable carbon isotope Osmotic solutes Groundwater depth Populus euphratica
ISSN号	0167-6369
DOI	10.1007/s10661-015-4890-y
通讯作者	Si, Jianhua(jianhuas@lzb.ac.cn)
英文摘要	Water use efficiency (WUE) is an important trait associated with plant acclimation caused by water deficits, and delta C-13 is a good surrogate of WUE under conditions of water deficits. Water deficiency also enhances the accumulation of compatible solutes in the leaves. In this study, variations in foliar delta C-13 values and main osmotic solutes were investigated. Those included total soluble sugar (TSS), sucrose, free proline, glycine betaine (GB), and inorganic ionic (K+, Ca2+, and Cl-) content of Populus euphratica for different groundwater depths in a Ejina desert riparian forest, China. Results indicated that foliar delta C-13 values in the P. euphratica for different groundwater depths ranged from -29.14 +/- 0.06 to -25.84 +/- 0.04%. Foliar delta C-13 signatures became richer as groundwater levels declined. TSS, sucrose, free proline, GB, and K+ were accumulated in P. euphratica foliage with developing plant growth and increasing groundwater depth. Ca2+ and Cl- content increased under stronger P. euphratica transpiration rates for shallower groundwater depths (1-2.5 m) and decreased for deeper groundwater depths (greater than 3.0 m). Moreover, correlations between delta C-13, osmotic solutes, and groundwater depths showed that the primary osmotic solutes were TSS, sucrose, proline, GB, and K+. Correlations also showed that delta C-13 was not only a useful measure for P. euphratica-integrated WUE but also could be used as an indicator reflecting some physiological osmotic indexes.
收录类别	SCI
WOS关键词	WATER-USE EFFICIENCY ; DESICCATION TOLERANCE ; PLANT-RESPONSES ; SALT TOLERANCE ; GAS-EXCHANGE ; STRESS ; PROLINE ; DISCRIMINATION ; ADJUSTMENT ; ACCUMULATION
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000363964000047
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2557185
专题	寒区旱区环境与工程研究所
通讯作者	Si, Jianhua
作者单位	Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Si, Jianhua,Feng, Qi,Yu, Tengfei,et al. Variation in Populus euphratica foliar carbon isotope composition and osmotic solute for different groundwater depths in an arid region of China[J]. ENVIRONMENTAL MONITORING AND ASSESSMENT,2015,187(11):15.
APA	Si, Jianhua,Feng, Qi,Yu, Tengfei,Zhao, Chunyan,&Li, Wei.(2015).Variation in Populus euphratica foliar carbon isotope composition and osmotic solute for different groundwater depths in an arid region of China.ENVIRONMENTAL MONITORING AND ASSESSMENT,187(11),15.
MLA	Si, Jianhua,et al."Variation in Populus euphratica foliar carbon isotope composition and osmotic solute for different groundwater depths in an arid region of China".ENVIRONMENTAL MONITORING AND ASSESSMENT 187.11(2015):15.

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