Vertical distribution and phylogenetic characterization of marine planktonic Archaea in the Santa Barbara Channel.

Applied and Environmental Microbiology
R MassanaE F DeLong

Abstract

Newly described phylogenetic lineages within the domain Archaea have recently been found to be significant components of marine picoplankton assemblages. To better understand the ecology of these microorganisms, we investigated the relative abundance, distribution, and phylogenetic composition of Archaea in the Santa Barbara Channel. Significant amounts of archaeal rRNA and rDNA (genes coding for rRNA) were detected in all samples analyzed. The relative abundance of archaeal rRNA as measured by quantitative oligonucleotide hybridization experiments was low in surface waters but reached higher values (20 to 30% of prokaryotic rRNA) at depths below 100 m. Probes were developed for the two major groups of marine Archaea detected. rRNA originating from the euryarchaeal group (group II) was most abundant in surface waters, whereas rRNA from the crenarchaeal group (group I) dominated at depth. Clone libraries of PCR-amplified archaeal rRNA genes were constructed with samples from 0 and 200 m deep. Screening of libraries by hybridization with specific oligonucleotide probes, as well as subsequent sequencing of the cloned genes, indicated that virtually all archaeal rDNA clones recovered belonged to one of the two groups. The recovery ...Continue Reading

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Citations

May 11, 1999·Nature·K U HinrichsE F DeLong
May 2, 2000·Applied and Environmental Microbiology·R MassanaC Pedrós-Alió
Jul 8, 2000·Molecular Ecology·J García-Martínez, F Rodríguez-Valera
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Oct 9, 2002·Environmental Microbiology·Achim QuaiserChrista Schleper
Jun 29, 2002·Applied and Environmental Microbiology·Katja Dominik, Manfred G Höfle
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Jan 1, 2015·Microorganisms·María Sofía UrbietaEdgardo Rubén Donati

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