Biodiversity of streptomycetes isolated from a succession sequence at a post-mining site and their evidence in Miocene lacustrine sediment

0350141 - BC 2011 RIV DE eng J - Článek v odborném periodiku
Chroňáková, Alica - Krištůfek, Václav - Tichý, Martin - Elhottová, Dana
Biodiversity of streptomycetes isolated from a succession sequence at a post-mining site and their evidence in Miocene lacustrine sediment.
Microbiological Research. Roč. 165, č. 7 (2010), s. 594-608. ISSN 0944-5013. E-ISSN 1618-0623
Grant CEP: GA AV ČR IAA600660607; GA ČR GA526/03/1259; GA MŠMT LC06066; GA MŠMT 2B06154
Grant ostatní: GAJU(CZ) 54/2004/P-BF
Výzkumný záměr: CEZ:AV0Z60660521; CEZ:AV0Z50200510
Klíčová slova: actinomycetes * antibiotics * primary succession
Kód oboru RIV: EH - Ekologie - společenstva
Impakt faktor: 1.958, rok: 2010

The genetic diversity of streptomycetes in colliery spoil heaps (Sokolov), Czech Republic) was investigated by restriction pattern analysis of 165-internal transcribed spacer rDNA and 165 sequences. We sampled freshly excavated Miocene sediment (17-19-million-year-old) and four sites of primary succession (initial, early, middle, and late stages; aged 1-44 years) on the same sediment. Active bacteria were present even in fresh Miocene sediment, and the relative proportion of actinomycetes among total bacterial and their genetic diversity increased significantly with the age of the sampling site. The replacement of pioneer species by late succession species during succession was observed. Plate assays of Streptomyces strains revealed 27% antibiotic-producing strains. Screening for nonribosomal peptide synthases and type I polyketide synthases systems suggested that 90% and 55% streptomycetes, respectively, are putative producers of biologically active compounds.
Trvalý link: http://hdl.handle.net/11104/0190221