Phylogenetic analysis of group i marine archaeal rrna sequences emphasizes the hidden diversity within the primary group archaea

Archaea form one of the three primary groups of extant life and are commonly associated with the extreme environments which many of their members inhabit. Currently, the Archaea are classified into two kingdoms, Crenarchaeota and Euryarchaeota, based on phylogenetic analysis of ribosomal RNA (rRNA)...

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Bibliographic Details
Published in:Proceedings of the Royal Society of London. Series B: Biological Sciences
Main Authors: McInerney, J. O., Mullarkey, M., Wernecke, M. E., Powel, R.
Format: Article in Journal/Newspaper
Language:unknown
Published: The Royal Society 1997
Subjects:
ribosomal-rna sequences
maximum-likelihood
DNA-sequences
evolutionary trees
bacteria
limits
North East Atlantic
Online Access:http://hdl.handle.net/10379/9529
https://doi.org/10.1098/rspb.1997.0231
Description
Summary:Archaea form one of the three primary groups of extant life and are commonly associated with the extreme environments which many of their members inhabit. Currently, the Archaea are classified into two kingdoms, Crenarchaeota and Euryarchaeota, based on phylogenetic analysis of ribosomal RNA (rRNA) sequences. Molecular techniques allowing the retrieval and analysis of rRNA sequences from diverse environments are increasing our knowledge of archaeal diversity. This report describes the presence of marine Archaea in north-east Atlantic waters. Quantitative estimates indicated that the marine Archaea constitute 8% of the total prokaryotic rRNA in Irish coastal waters. Phylogenetic analysis of the archaeal rRNA gene sequences revealed sufficient genetic diversity within Archaea to indicate that the current two-kingdom classification of Crenarchaeota and Euryarchaeota is restrictive.

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