Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jaridenv.2016.01.005 |
Leaf epidermal water-absorbing scales and their absorption of unsaturated atmospheric water in Reaumuria soongorica, a desert plant from the northwest arid region of China | |
Wang, Xiaohua; Xiao, Honglang; Cheng, Yiben; Ren, Juan | |
通讯作者 | Wang, Xiaohua |
来源期刊 | JOURNAL OF ARID ENVIRONMENTS |
ISSN | 0140-1963 |
EISSN | 1095-922X |
出版年 | 2016 |
卷号 | 128页码:17-29 |
英文摘要 | This study found water-absorbing scales (WASs), which could absorb unsaturated atmospheric water (UAW), in the leaves of Reaumuria soongorica, a super-xerophytic desert plant. WASs were a complex cellular structure surmounted by four to seven valves that formed an inverted cone pore. The base of the cone comprised three or four flat, thin-walled, living cells. Under low humidity, the valves of WASs contracted, becoming nearly closed and leaving a small central opening, thus forming a more or less impermeable lid. Under high humidity, the valves of WASs absorbed UAW from the atmosphere and swelled, gradually expanding and forming a larger central opening. The basal cells raised the lid of the scale and allowed water to flow by capillary action over the cuticle. At a relative humidity of 75-95% with a wetting period of 3 h in duration, the valve opened fully, the central opening expanded to form a polygonal structure, and the water content of the leaves increased from 47.8% to 54.2%. An EDS analysis with a scanning electron microscope found more chloride, sulfate and potassium in the valves of WASs than in normal leaf epidermis. This chemical composition may facilitate the absorption of water from unsaturated air by WASs. (c) 2016 Elsevier Ltd. All rights reserved. |
英文关键词 | Water-absorbing scales Unsaturated atmospheric water Fluorescence tracer Drought environments |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000376806800004 |
WOS关键词 | SEMPERVIRENS D. DON ; FOLIAR UPTAKE ; ELEKTRONENMIKROSKOPISCHE UNTERSUCHUNGEN ; AEROSOL-PARTICLES ; FOG WATER ; SURFACE ; DEW ; LEAVES ; PHOTOSYNTHESIS ; DEHYDRATION |
WOS类目 | Ecology ; Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
来源机构 | 中国科学院西北生态环境资源研究院 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/194107 |
作者单位 | Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Div Hydrol Water Land Resources Cold & Arid Reg, Key Lab Ecohydrol & Inland River Basin, Lanzhou 730000, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Xiaohua,Xiao, Honglang,Cheng, Yiben,et al. Leaf epidermal water-absorbing scales and their absorption of unsaturated atmospheric water in Reaumuria soongorica, a desert plant from the northwest arid region of China[J]. 中国科学院西北生态环境资源研究院,2016,128:17-29. |
APA | Wang, Xiaohua,Xiao, Honglang,Cheng, Yiben,&Ren, Juan.(2016).Leaf epidermal water-absorbing scales and their absorption of unsaturated atmospheric water in Reaumuria soongorica, a desert plant from the northwest arid region of China.JOURNAL OF ARID ENVIRONMENTS,128,17-29. |
MLA | Wang, Xiaohua,et al."Leaf epidermal water-absorbing scales and their absorption of unsaturated atmospheric water in Reaumuria soongorica, a desert plant from the northwest arid region of China".JOURNAL OF ARID ENVIRONMENTS 128(2016):17-29. |
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