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PMID: 15731455 Published · ppublish English Journal Article Research Support, U.S. Gov't, Non-P.H.S.

Genotypic diversity within a natural coastal bacterioplankton population.

Science (New York, N.Y.) ·Vol. 307 ·No. 5713 ·2005-02-25 ·Pages 1311-3

Thompson JR, Pacocha S, Pharino C, Klepac-Ceraj V, Hunt DE, Benoit J, Sarma-Rupavtarm R, Distel DL, Polz MF

Abstract

The genomic diversity and relative importance of distinct genotypes within natural bacterial populations have remained largely unknown. Here, we analyze the diversity and annual dynamics of a group of coastal bacterioplankton (greater than 99% 16S ribosomal RNA identity to Vibrio splendidus). We show that this group consists of at least a thousand distinct genotypes, each occurring at extremely low environmental concentrations (on average less than one cell per milliliter). Overall, the genomes show extensive allelic diversity and size variation. Individual genotypes rarely recurred in samples, and allelic distribution did not show spatial or temporal substructure. Ecological considerations suggest that much genotypic and possibly phenotypic variation within natural populations should be considered neutral.

MeSH Terms
Alleles Chaperonin 60/genetics Ecosystem Electrophoresis, Gel, Pulsed-Field Genetic Variation Genome, Bacterial Genotype Molecular Sequence Data Plankton/classification,genetics,growth & development,isolation & purification Polymerase Chain Reaction Ribotyping Seawater/microbiology Time Factors Vibrio/classification,genetics,isolation & purification
Chemicals
Chaperonin 60
Authors & Affiliations
9 authors, click to expand affiliations / ORCID
Thompson Janelle R
Department of Civil and Environmental Engineering, Massachusetts Institute of Technology (MIT), Cambridge, MA 02139, USA.
Pacocha Sarah
Pharino Chanathip
Klepac-Ceraj Vanja
Hunt Dana E
Benoit Jennifer
Sarma-Rupavtarm Ramahi
Distel Daniel L
Polz Martin F
Article Info
Journal
Science (New York, N.Y.)
Abbr.
Science
ISSN
1095-9203
Published
2005-02-25
Pages
1311-3
Language
English
Region
United States
NLM ID
0404511
Subset
IM
Databases
GENBANK
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