Genetic diversity within populations of cyanobacteria assessed by analysis of single filaments

Hayes, P. K., Barker, G. L. A., Batley, J., Beard, S. J., Handley, B. A., Vacharapiyasophon, P. and Walsby, A. E. (2002) Genetic diversity within populations of cyanobacteria assessed by analysis of single filaments. Antonie Van Leeuwenhoek, 81 1-4: 197-202. doi:10.1023/A:1020510516829


Author Hayes, P. K.
Barker, G. L. A.
Batley, J.
Beard, S. J.
Handley, B. A.
Vacharapiyasophon, P.
Walsby, A. E.
Title Genetic diversity within populations of cyanobacteria assessed by analysis of single filaments
Journal name Antonie Van Leeuwenhoek   Check publisher's open access policy
ISSN 0003-6072
1572-9699
Publication date 2002-12-01
Year available 2002
Sub-type Article (original research)
DOI 10.1023/A:1020510516829
Open Access Status Not yet assessed
Volume 81
Issue 1-4
Start page 197
End page 202
Total pages 6
Place of publication Netherlands
Publisher Springer
Language eng
Abstract We have developed a technique for determining the genetic structure of populations of filamentous cyanobacteria. The sequence diversity at specific gene loci is first characterised in a range of clonal cultures; subsequent analysis involves individual trichomes collected directly from natural populations. This technique has been used to examine the population genetic structure of Nodularia in the Baltic Sea and Planktothrix in Lake Zurich. For Nodularia, studies utilising four polymorphic loci reveal that even though there is a degree of linkage disequilibrium, horizontal transfer of genetic information has been sufficient to generate many of the possible allelic combinations. Analyses reveal both spatial and temporal variation in population genetic structure. Other studies of both Nodularia and Planktothrix have shown a correlation between particular alleles at the gvpC locus and the critical pressure of the gas vesicles that accumulate within the cell. We are now investigating how the natural selection of different gas vesicle phenotypes, imposed by changes in the depth of the upper mixed layer of the water column, affects the relative success of individual cyanobacteria possessing different gvpC alleles.
Keyword Microbiology
cyanobacteria
gas vesicles
Nodularia
Planktothrix
population genetics
Gas Vesicles
Baltic-sea
Nodularia Cyanobacteria
Planktothrix-rubescens
Lake-zurich
Linkage Disequilibrium
Outer-surface
Protein
Gvpc
Advantage
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Agriculture and Food Sciences
 
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Created: Thu, 20 Sep 2007, 01:42:31 EST