Abstract：
:Next Generation Sequencing (NGS), using the Illumina® metabarcoding system, showed differences between biofilm communities on three degraded siliceous stone church façades in central Rio de Janeiro. Two church biofilms (on granite and augen gneiss) were dominated by Actinobacteria; the third (granite), surrounded by trees and further from intense vehicular traffic, by Gammaproteobacteria. Yeast-like forms of Basidiomycetes and Ascomycetes were major fungi on all facades, but 22.8% of Operational Taxonomic Units could not be assigned to any fungal taxon after DNA amplification with ITS primers and analysis with the UNITE database, indicating the need for more fungal NGS studies. The pipeline used in analysis of the V4 region of rRNA bacterial gene sequences influenced the taxa detected, with two major classes and many genera identified only by the pipeline using the Greengenes, and not the Silva, database. Principal Components Analysis separated façade biofilms into the appropriate three groups and indicated greater dissimilarity of the tree-surrounded church biofilm from the others, confirmed by Jaccard Similarity coefficients, suggesting that local environment influences community composition more than stone type. NGS allows rapid and detailed analysis of microbiomes, but results must be carefully assessed and must not be used as the sole indication of community composition.
journal_name
Curr Microbioljournal_title
Current microbiologyauthors
Ogawa A,Celikkol-Aydin S,Gaylarde C,Baptista-Neto JA,Beech Idoi
10.1007/s00284-017-1257-3subject
Has Abstractpub_date
2017-07-01 00:00:00pages
848-853issue
7eissn
0343-8651issn
1432-0991pii
10.1007/s00284-017-1257-3journal_volume
74pub_type
杂志文章abstract：:This study was taken up with a view to generate basic information on spore hardiness to ethanol in various Bacillus species and related genera, and to assess the effectiveness of different levels of ethanol as a bacterial disinfectant. Predominantly spore-bearing cultures of five Bacillus spp. (B. pumilus, B. subtilis...
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