PMID- 24327076 OWN - NLM STAT- MEDLINE DCOM- 20141013 LR - 20160512 IS - 1618-2650 (Electronic) IS - 1618-2642 (Linking) VI - 406 IP - 3 DP - 2014 Jan TI - Microbial communities analysis assessed by pyrosequencing--a new approach applied to conservation state studies of mural paintings. PG - 887-95 LID - 10.1007/s00216-013-7516-7 [doi] AB - The knowledge about the microbial communities present in mural paintings is of utmost importance to develop effective conservation and mitigation strategies. The present paper describes a methodological approach for the detailed characterisation of microorganisms thriving in mural paintings by combining culture-dependent methods that allow the identification of microorganisms capable of growing in the laboratory conditions and to obtain high cell densities for further studies, and culture independent methods, such as denaturing gradient gel electrophoresis (DGGE) and pyrosequencing. The coupled use of culture-dependent methods and DGGE does not give enough information to investigate the diversity and abundance of microorganisms present in wall paintings. Pyrosequencing, a novel molecular technique, used here for the first time in this area of research, allowed the identification of a large number of microorganisms, confirming some already identified by the cultivation-dependent methods such as fungi of the genera Penicillium and Cladosporium, but also providing a great contribution in the identification of several genera and species, not previously identified in these artworks, giving also a detailed overview of contaminants which was not possible with the other approaches. The results obtained on several mural painting samples show a strong relationship between the most deteriorated areas of the paintings and higher microbial contamination. FAU - Rosado, T AU - Rosado T AD - HERCULES Laboratory, Evora University, Largo Marques de Marialva 8, 7000-809, Evora, Portugal. FAU - Mirao, J AU - Mirao J FAU - Candeias, A AU - Candeias A FAU - Caldeira, A T AU - Caldeira AT LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131212 PL - Germany TA - Anal Bioanal Chem JT - Analytical and bioanalytical chemistry JID - 101134327 RN - 0 (Diphosphates) SB - IM MH - Bacterial Typing Techniques/*methods MH - Colony Count, Microbial MH - *DNA Contamination MH - Diphosphates/*chemistry MH - Microscopy, Electron, Scanning MH - *Paintings MH - Sequence Analysis, DNA/*methods EDAT- 2013/12/12 06:00 MHDA- 2014/10/14 06:00 CRDT- 2013/12/12 06:00 PHST- 2013/08/18 00:00 [received] PHST- 2013/11/16 00:00 [accepted] PHST- 2013/10/28 00:00 [revised] PHST- 2013/12/12 06:00 [entrez] PHST- 2013/12/12 06:00 [pubmed] PHST- 2014/10/14 06:00 [medline] AID - 10.1007/s00216-013-7516-7 [doi] PST - ppublish SO - Anal Bioanal Chem. 2014 Jan;406(3):887-95. doi: 10.1007/s00216-013-7516-7. Epub 2013 Dec 12.