RRC ID 57714
著者 West NJ, Schönhuber WA, Fuller NJ, Amann RI, Rippka R, Post AF, Scanlan DJ.
タイトル Closely related Prochlorococcus genotypes show remarkably different depth distributions in two oceanic regions as revealed by in situ hybridization using 16S rRNA-targeted oligonucleotides.
ジャーナル Microbiology (Reading)
Abstract An in situ hybridization method was applied to the identification of marine cyanobacteria assignable to the genus Prochlorococcus using horseradish-peroxidase-labelled 16S rRNA-targeted oligonucleotide probes in combination with tyramide signal amplification (TSA). With this method very bright signals were obtained, in contrast to hybridizations with oligonucleotides monolabelled with fluorochromes, which failed to give positive signals. Genotype-specific oligonucleotides for high light (HL)- and low light (LL)-adapted members of this genus were identified by 16S rRNA sequence analyses and their specificities confirmed in whole-cell hybridizations with cultured strains of Prochlorococcus marinus Chisholm et al., 1992, Prochlorococcus sp. and Synechococcus sp. In situ hybridization of these genotype-specific probes to field samples from stratified water bodies collected in the North Atlantic Ocean and the Red Sea allowed a rapid assessment of the abundance and spatial distribution of HL- and LL-adapted Prochlorococcus. In both oceanic regions the LL-adapted Prochlorococcus populations were localized in deeper water whereas the HL-adapted Prochlorococcus populations were not only distinct in each region but also exhibited strikingly different depth distributions, HLI being confined to shallow water in the North Atlantic, in contrast to HLII, which was present throughout the water column in the Red Sea.
巻・号 147(Pt 7)
ページ 1731-1744
公開日 2001-7-1
DOI 10.1099/00221287-147-7-1731
PMID 11429451
MeSH Colony Count, Microbial Cyanobacteria / classification* Cyanobacteria / genetics* Cyanobacteria / physiology DNA, Ribosomal / analysis Ecology Flow Cytometry Genes, rRNA Genotype In Situ Hybridization, Fluorescence* Molecular Sequence Data Oligonucleotide Probes / genetics* Phylogeny RNA, Ribosomal, 16S / genetics* Seawater / microbiology* Sequence Analysis, DNA
IF 2.138
引用数 134
リソース情報
藻類 NIES-2885