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Patterns of nucleotide diversity of the ldpA circadian gene in closely related species of cyanobacteria from extreme cold deserts

In the circadian system of cyanobacteria, the ldpA gene is a component of the input to the clock. We comparatively analyzed nucleotide polymorphism of this gene in populations of two closely related species of cyanobacteria (denoted as Synechococcus species S1 and S2, respectively) from extreme cold... Full description

Journal Title: Applied and environmental microbiology March 2013, Vol.79(5), pp.1516-22
Main Author: Ng, Ka Wai
Other Authors: Pointing, Stephen B , Dvornyk, Volodymyr
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: E-ISSN: 1098-5336 ; PMID: 23263969 Version:1 ; DOI: 10.1128/AEM.03439-12
Link: http://pubmed.gov/23263969
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recordid: medline23263969
title: Patterns of nucleotide diversity of the ldpA circadian gene in closely related species of cyanobacteria from extreme cold deserts
format: Article
creator:
  • Ng, Ka Wai
  • Pointing, Stephen B
  • Dvornyk, Volodymyr
subjects:
  • Genetic Variation
  • Circadian Rhythm Signaling Peptides and Proteins -- Genetics
  • Cyanobacteria -- Genetics
ispartof: Applied and environmental microbiology, March 2013, Vol.79(5), pp.1516-22
description: In the circadian system of cyanobacteria, the ldpA gene is a component of the input to the clock. We comparatively analyzed nucleotide polymorphism of this gene in populations of two closely related species of cyanobacteria (denoted as Synechococcus species S1 and S2, respectively) from extreme cold deserts in Antarctica, the Canadian Arctic, and Tibet. Although both species manifested similarly high haplotype diversities (0.990 and 0.809, respectively), the nucleotide diversity differed significantly (0.0091 in S1 and 0.0037 in S2). The populations of species S2 were more differentiated (F(ST) = 0.2242) compared to those of species S1 (F(ST) between 0.0296 and 0.1188). An analysis of positive selection with several tests yielded highly significant values (P < 0.01) for both species. On the other hand, these results may be somewhat compromised by fluctuating population sizes of the species. The apparent selection pressure coupled with the pronounced demographic factors, such as population...
language: eng
source:
identifier: E-ISSN: 1098-5336 ; PMID: 23263969 Version:1 ; DOI: 10.1128/AEM.03439-12
fulltext: fulltext
issn:
  • 10985336
  • 1098-5336
url: Link


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titlePatterns of nucleotide diversity of the ldpA circadian gene in closely related species of cyanobacteria from extreme cold deserts
creatorNg, Ka Wai ; Pointing, Stephen B ; Dvornyk, Volodymyr
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subjectGenetic Variation ; Circadian Rhythm Signaling Peptides and Proteins -- Genetics ; Cyanobacteria -- Genetics
descriptionIn the circadian system of cyanobacteria, the ldpA gene is a component of the input to the clock. We comparatively analyzed nucleotide polymorphism of this gene in populations of two closely related species of cyanobacteria (denoted as Synechococcus species S1 and S2, respectively) from extreme cold deserts in Antarctica, the Canadian Arctic, and Tibet. Although both species manifested similarly high haplotype diversities (0.990 and 0.809, respectively), the nucleotide diversity differed significantly (0.0091 in S1 and 0.0037 in S2). The populations of species S2 were more differentiated (F(ST) = 0.2242) compared to those of species S1 (F(ST) between 0.0296 and 0.1188). An analysis of positive selection with several tests yielded highly significant values (P < 0.01) for both species. On the other hand, these results may be somewhat compromised by fluctuating population sizes of the species. The apparent selection pressure coupled with the pronounced demographic factors, such as population...
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titlePatterns of nucleotide diversity of the ldpA circadian gene in closely related species of cyanobacteria from extreme cold deserts
descriptionIn the circadian system of cyanobacteria, the ldpA gene is a component of the input to the clock. We comparatively analyzed nucleotide polymorphism of this gene in populations of two closely related species of cyanobacteria (denoted as Synechococcus species S1 and S2, respectively) from extreme cold deserts in Antarctica, the Canadian Arctic, and Tibet. Although both species manifested similarly high haplotype diversities (0.990 and 0.809, respectively), the nucleotide diversity differed significantly (0.0091 in S1 and 0.0037 in S2). The populations of species S2 were more differentiated (F(ST) = 0.2242) compared to those of species S1 (F(ST) between 0.0296 and 0.1188). An analysis of positive selection with several tests yielded highly significant values (P < 0.01) for both species. On the other hand, these results may be somewhat compromised by fluctuating population sizes of the species. The apparent selection pressure coupled with the pronounced demographic factors, such as population...
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abstractIn the circadian system of cyanobacteria, the ldpA gene is a component of the input to the clock. We comparatively analyzed nucleotide polymorphism of this gene in populations of two closely related species of cyanobacteria (denoted as Synechococcus species S1 and S2, respectively) from extreme cold deserts in Antarctica, the Canadian Arctic, and Tibet. Although both species manifested similarly high haplotype diversities (0.990 and 0.809, respectively), the nucleotide diversity differed significantly (0.0091 in S1 and 0.0037 in S2). The populations of species S2 were more differentiated (F(ST) = 0.2242) compared to those of species S1 (F(ST) between 0.0296 and 0.1188). An analysis of positive selection with several tests yielded highly significant values (P < 0.01) for both species. On the other hand, these results may be somewhat compromised by fluctuating population sizes of the species. The apparent selection pressure coupled with the pronounced demographic factors, such as population...
doi10.1128/AEM.03439-12
pmid23263969
date2013-03-01