Genotypic diversity within a natural coastal bacterioplankton population.

Journal Article (Journal Article)

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.

Full Text

Duke Authors

Cited Authors

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

Published Date

  • February 2005

Published In

Volume / Issue

  • 307 / 5713

Start / End Page

  • 1311 - 1313

PubMed ID

  • 15731455

Electronic International Standard Serial Number (EISSN)

  • 1095-9203

International Standard Serial Number (ISSN)

  • 0036-8075

Digital Object Identifier (DOI)

  • 10.1126/science.1106028


  • eng