干旱区生态环境知识资源中心(Arid): Dew water-uptake pathways in Negev desert plants: a study using stable isotope tracers

Arid

DOI	10.1007/s00442-021-04940-9
	Dew water-uptake pathways in Negev desert plants: a study using stable isotope tracers
	Hill, Amber J.; Dawson, Todd E.; Dody, Avraham; Rachmilevitch, Shimon
通讯作者	Hill, AJ (corresponding author), Ben Gurion Univ Negev, Jacob Blaustein Inst Desert Res, Sede Boqer Campus Midreshet Ben Gurion, IL-84990 Beer Sheva, Israel.
来源期刊	OECOLOGIA
ISSN	0029-8549
EISSN	1432-1939
出版年	2021
卷号	196 期号:2 页码:353-361
英文摘要	Dew is an important water resource for plants in most deserts. The mechanism that allows desert plants to use dew water was studied using an isotopic water tracer approach. Most plants use water directly from the soil; the roots transfer the water to the rest of the plant, where it is required for all metabolic functions. However, many plants can also take up water into their leaves and stems. Examining the dew water uptake pathways in desert plants can lend insight on another all water-use pathways examination. We determined where and how dew water enters plants in the water limited Negev desert. Highly depleted isotopic water was sprayed on three different dominant plant species of the Negev desert-Artemesia sieberi, Salsola inermis and Haloxylon scoparium-and its entry into the plant was followed. Water was sprayed onto the soil only, or on the leaves/stems only (with soil covered to prevent water entry via root uptake). Thereafter, the isotopic composition of water in the roots and stems were measured at various time points. The results show that each plant species used the dew water to a different extent, and we obtained evidence of foliar uptake capacity of dew water that varied depending on the microenvironmental conditions. A. sieberi took up the greatest amount of dew water through both stems and roots, S. inermis took up dew water mainly from the roots, and H. scoparium showed the least dew capture overall.
英文关键词	Stable oxygen and hydrogen isotopes Foliar water uptake Root water uptake Desert plants
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000651662000001
WOS关键词	SEMPERVIRENS D. DON ; FOLIAR UPTAKE ; CARBON FLUXES ; FOG WATER ; ABSORPTION ; FOREST ; PRECIPITATION ; TRICHOMES ; RESPONSES ; PATTERNS
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
来源机构	Ben-Gurion University of the Negev ; University of California, Berkeley
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351235
作者单位	[Hill, Amber J.; Rachmilevitch, Shimon] Ben Gurion Univ Negev, Jacob Blaustein Inst Desert Res, Sede Boqer Campus Midreshet Ben Gurion, IL-84990 Beer Sheva, Israel; [Dawson, Todd E.] Univ Calif Berkeley, Ctr Stable Isotope Biogeochem, Berkeley, CA 94720 USA; [Dawson, Todd E.] Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA; [Dody, Avraham] Ben Gurion Univ Negev, Geog & Environm Developing Dept, Beer Sheva, Israel
推荐引用方式 GB/T 7714	Hill, Amber J.,Dawson, Todd E.,Dody, Avraham,et al. Dew water-uptake pathways in Negev desert plants: a study using stable isotope tracers[J]. Ben-Gurion University of the Negev, University of California, Berkeley,2021,196(2):353-361.
APA	Hill, Amber J.,Dawson, Todd E.,Dody, Avraham,&Rachmilevitch, Shimon.(2021).Dew water-uptake pathways in Negev desert plants: a study using stable isotope tracers.OECOLOGIA,196(2),353-361.
MLA	Hill, Amber J.,et al."Dew water-uptake pathways in Negev desert plants: a study using stable isotope tracers".OECOLOGIA 196.2(2021):353-361.