Arid
DOI10.1007/s11046-012-9592-1
Microcolonial Fungi on Rocks: A Life in Constant Drought?
Zakharova, Kristina1; Tesei, Donatella1; Marzban, Gorji1; Dijksterhuis, Jan2; Wyatt, Timon2; Sterflinger, Katja1
通讯作者Sterflinger, Katja
来源期刊MYCOPATHOLOGIA
ISSN0301-486X
EISSN1573-0832
出版年2013
卷号175期号:5-6页码:537-547
英文摘要

Black microcolonial fungi (MCF) and black yeasts are among the most stress-resistant eukaryotic organisms known on Earth. They mainly inhabit bare rock surfaces in hot and cold deserts of all regions of the Earth, but some of them have a close phylogenetic relation to human pathogenic black fungi which makes them important model organisms also with respect to clinical mycology. The environment of those fungi is especially characterized by extreme changes from humidity to long periods of desiccation and extreme temperature differences. A key to the understanding of MCF ecology is the question about metabolic activity versus dormancy in the natural environments. In this study, the time lag from the desiccated state to rehydration and full metabolic activity and growth was measured and defined in accordance with simulated environmental conditions. The ability to survive after desiccation and the speed of rehydration as well as changes of the whole cell protein pattern are demonstrated. Whereas both mesophilic strains-Exophiala jeanselmei and Knufia perforans (=Coniosporium perforans)-show a clear reaction toward desiccation by production of small proteins, Cryomyces antarcticus-the extremotolerant MCF-does not show any response to desiccation but seems just to down-regulate its metabolism. Data on intracellular sugar suggest that both trehalose and mannitol might play a cell protective role in those fungi.


英文关键词Black yeast Anhydrobiosis Two-dimensional gel electrophoresis Protein profiling Trehalose
类型Article
语种英语
国家Austria ; Netherlands
收录类别SCI-E
WOS记录号WOS:000319768900019
WOS关键词PROTEIN EXPRESSION ; BLACK FUNGI ; DESICCATION ; STRESS ; TOLERANCE ; DESERT ; TEMPERATURE ; GERMINATION ; RESPONSES ; SURVIVAL
WOS类目Mycology
WOS研究方向Mycology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/178957
作者单位1.Univ Nat Resources & Life Sci Vienna, Dept Biotechnol, A-1190 Vienna, Austria;
2.CBS Fungal Biodivers Ctr, NL-3584 CT Utrecht, Netherlands
推荐引用方式
GB/T 7714
Zakharova, Kristina,Tesei, Donatella,Marzban, Gorji,et al. Microcolonial Fungi on Rocks: A Life in Constant Drought?[J],2013,175(5-6):537-547.
APA Zakharova, Kristina,Tesei, Donatella,Marzban, Gorji,Dijksterhuis, Jan,Wyatt, Timon,&Sterflinger, Katja.(2013).Microcolonial Fungi on Rocks: A Life in Constant Drought?.MYCOPATHOLOGIA,175(5-6),537-547.
MLA Zakharova, Kristina,et al."Microcolonial Fungi on Rocks: A Life in Constant Drought?".MYCOPATHOLOGIA 175.5-6(2013):537-547.
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