Arid
DOI10.1007/s00425-011-1475-z
Passive water control at the surface of a superhydrophobic lichen
Hamlett, Christopher A. E.1; Shirtcliffe, Neil James1; Pyatt, F. Brian1; Newton, Michael I.1; McHale, Glen1; Koch, Kerstin2
通讯作者Shirtcliffe, Neil James
来源期刊PLANTA
ISSN0032-0935
EISSN1432-2048
出版年2011
卷号234期号:6页码:1267-1274
英文摘要

Some lichens have a super-hydrophobic upper surface, which repels water drops, keeping the surface dry but probably preventing water uptake. Spore ejection requires water and is most efficient just after rainfall. This study was carried out to investigate how super-hydrophobic lichens manage water uptake and repellence at their fruiting bodies, or podetia. Drops of water were placed onto separate podetia of Cladonia chlorophaea and observed using optical microscopy and cryo-scanning-electron microscopy (cryo-SEM) techniques to determine the structure of podetia and to visualise their interaction with water droplets. SEM and optical microscopy studies revealed that the surface of the podetia was constructed in a three-level structural hierarchy. By cryo-SEM of water-glycerol droplets placed on the upper part of the podetium, pinning of the droplet to specific, hydrophilic spots (pycnidia/apothecia) was observed. The results suggest a mechanism for water uptake, which is highly sophisticated, using surface wettability to generate a passive response to different types of precipitation in a manner similar to the Namib Desert beetle. This mechanism is likely to be found in other organisms as it offers passive but selective water control.


英文关键词Apothecium Cryo-SEM Lichens Soredium Super-hydrophobicity Water uptake
类型Article
语种英语
国家England ; Germany
收录类别SCI-E
WOS记录号WOS:000297545800015
WOS关键词FOREST
WOS类目Plant Sciences
WOS研究方向Plant Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/170061
作者单位1.Nottingham Trent Univ, Sch Sci & Technol, Nottingham NG11 8NS, England;
2.Rhine Waal Univ, Fac Life Sci, D-47533 Kleve, Germany
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GB/T 7714
Hamlett, Christopher A. E.,Shirtcliffe, Neil James,Pyatt, F. Brian,et al. Passive water control at the surface of a superhydrophobic lichen[J],2011,234(6):1267-1274.
APA Hamlett, Christopher A. E.,Shirtcliffe, Neil James,Pyatt, F. Brian,Newton, Michael I.,McHale, Glen,&Koch, Kerstin.(2011).Passive water control at the surface of a superhydrophobic lichen.PLANTA,234(6),1267-1274.
MLA Hamlett, Christopher A. E.,et al."Passive water control at the surface of a superhydrophobic lichen".PLANTA 234.6(2011):1267-1274.
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