SciELO - Scientific Electronic Library Online

 
vol.43 issue2Interspecific variation of the bacterial community structure in the phyllosphere of the three major plant components of mangrove forestsComparison of thermotolerant coliforms and Escherichia coli densities in freshwater bodies author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Brazilian Journal of Microbiology

Print version ISSN 1517-8382

Abstract

ETTO, R. M. et al. Prokaryotic communities of acidic peatlands from the southern Brazilian Atlantic Forest. Braz. J. Microbiol. [online]. 2012, vol.43, n.2, pp. 661-674. ISSN 1517-8382.  http://dx.doi.org/10.1590/S1517-83822012000200031.

The acidic peatlands of southern Brazil are ecosystems essential for the maintenance of the Atlantic Forest, one of the 25 hot-spots of biodiversity in the world. In this work, we investigated the composition of prokaryotic communities in four histosols of three acidic peatland regions by constructing small-subunit (SSU) rRNA gene libraries and sequencing. SSU rRNA gene sequence analysis showed the prevalence of Acidobacteria (38.8%) and Proteobacteria (27.4%) of the Bacteria domain and Miscellaneous (58%) and Terrestrial (24%) groups of Crenarchaeota of the Archaea domain. As observed in other ecosystems, archaeal communities showed lower richness than bacterial communities. We also found a limited number of Euryarchaeota and of known methanotrophic bacteria in the clone libraries.

Keywords : acidic peatland; prokaryotic communities; SSU rRNA gene; microbial ecology.

        · text in English     · pdf in English