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Mycosporine‐glutamicol‐glucoside: a natural UV‐absorbing secondary metabolite of rock‐inhabiting microcolonial fungi
Author(s) -
Volkmann Marc,
Whitehead Kenia,
Rütters Heike,
Rullkötter Jürgen,
Gorbushina Anna A.
Publication year - 2003
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.997
Subject(s) - chemistry , glucoside , mass spectrometry , chromatography , secondary metabolite , metabolite , tandem mass spectrometry , botany , biochemistry , biology , medicine , alternative medicine , pathology , gene
Microcolonial ascomycetes are known to inhabit bare rock surfaces in cold and hot deserts and thus are habitually exposed to high levels of solar radiation. Several of these stress‐tolerant fungal isolates, cultivated in the laboratory under daylight illumination, were studied for the presence of effective UV‐radiation protection substances. Liquid chromatography/mass spectrometry (LC/MS) and liquid chromatography/tandem mass spectrometry (LC/MS/MS) analyses allowed for efficient separation and structure clarification of two mycosporines. It was demonstrated that both mycosporine‐glutami c ol‐glucoside and mycosporine‐glutami n ol‐glucoside are natural and constitutive secondary metabolites of microcolonial fungi. The function and relation of these substances in the fungal cell are discussed. Copyright © 2003 John Wiley & Sons, Ltd.