Abstract Lipids are among the organic substances that can work as biosignatures, indicating life in an environment. We present experimental investigation concerning analysis of lipids from a microbial source deposited on Mars Global Simulant (MGS-1) regolith by geomatrix-assisted laser desorption/ionization-mass spectrometry (GALDI-MS). Our results indicate intact cells black yeast strain be de...

Onychomycosis is usually caused by dermatophytes, although also other filamentous and yeast-like fungi are associated with nail invasion. Chaetomium is an environmental genus of ascomycetes exhibiting a certain degree of extremotolerance. We report the first case of onychomycosis in a 46-year-old woman in China caused by Chaetomium globosum. The patient showed yellowish black discoloration with...

A screening of 2300 samples of faeces from humans with and without underlying disease revealed that the black yeast Exophiala dermatitidis is present at a frequency of 5.2 per thousand (n=12). Eight individuals positive for the fungus had diarrhoea at the moment of its isolation, out of 11 where relevant information was available. Judging from repeated isolation over several weeks in one patien...