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Author Hallmann, Christine ♦ Rüdrich, Jörg ♦ Enseleit, Matthias ♦ Friedl, Thomas ♦ Hoppert, Michael
Source Paperity
Content type Text
Publisher Springer Berlin Heidelberg
File Format PDF ♦ HTM / HTML
Copyright Year ©2011
Subject Keyword Geology ♦ Hydrology/water resources ♦ Geochemistry ♦ Environmental science and engineering ♦ Terrestrial pollution ♦ Biogeosciences
Abstract In the presented case study, ascomycete fungi and green algae on a marble monument were identified by comparisons of the 18S rRNA gene sequences, which were obtained from DNA either from environmental samples or from enrichment cultures. The organisms were found to be responsible for either black or green surface coverings on different areas of the monument surface. Most fungi were related to plant-inhabiting genera, corresponding to a heavy soiling of the marble surface with honeydew. Whereas green algae of the genera Stichococcus, Chloroidium and Apatococcus were found to be dominant in all samples, isolates of two additional genera were recovered only from enrichment cultures. A reference strain of Apatococcus lobatus and an isolate of Prasiolopsis sp. were investigated with respect to putative surface adhesive structures of the cell envelope. The Prasiolopsis cell walls were covered with a thin adhesive exopolysaccharide layer involved in biofilm formation.
ISSN 18666280
Learning Resource Type Article
Publisher Date 2011-08-01
e-ISSN 18666299
Journal Environmental Earth Sciences
Volume Number 63
Issue Number 7-8