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Circadian cycles are the dominant transcriptional rhythm in the intertidal mussel Mytilus californianus.

Residents in the marine intertidal, the zone where terrestrial and marine habitats converge, inhabit an environment that is subject to both the 24-h day and night daily rhythm of the terrestrial earth and also the 12.4-h ebb and flow of the tidal cycle. Here, we investigate the relative contribution... Full description

Journal Title: Proceedings of the National Academy of Sciences of the United States of America September 20, 2011, Vol.108(38), pp.16110-16115
Main Author: Connor, Kwasi M
Other Authors: Gracey, Andrew Y
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: E-ISSN: 1091-6490 ; DOI: 10.1073/pnas.1111076108
Link: http://search.proquest.com/docview/893722657/?pq-origsite=primo
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title: Circadian cycles are the dominant transcriptional rhythm in the intertidal mussel Mytilus californianus.
format: Article
creator:
  • Connor, Kwasi M
  • Gracey, Andrew Y
subjects:
  • Animals–Genetics
  • Biological Clocks–Physiology
  • California–Genetics
  • Circadian Rhythm–Genetics
  • Cluster Analysis–Genetics
  • Ecosystem–Genetics
  • Gene Expression Profiling–Genetics
  • Gene Expression Regulation–Genetics
  • Geography–Genetics
  • Molecular Sequence Data–Genetics
  • Mytilus–Genetics
  • Oligonucleotide Array Sequence Analysis–Genetics
  • Periodicity–Genetics
  • Reverse Transcriptase Polymerase Chain Reaction–Genetics
  • Transcriptome–Genetics
ispartof: Proceedings of the National Academy of Sciences of the United States of America, September 20, 2011, Vol.108(38), pp.16110-16115
description: Residents in the marine intertidal, the zone where terrestrial and marine habitats converge, inhabit an environment that is subject to both the 24-h day and night daily rhythm of the terrestrial earth and also the 12.4-h ebb and flow of the tidal cycle. Here, we investigate the relative contribution of the daily and tidal cycle on the physiology of intertidal mussels, Mytilus californianus, by monitoring rhythms of gene expression in both simulated and natural tidal environments. We report that > 40% of the transcriptome exhibits rhythmic gene expression, and that depending on the specific tidal conditions, between 80% and 90% of the rhythmic transcripts follow a circadian expression pattern with a period of 24 to 26 h. Consistent with the dominant effect of the circadian cycle we show that the expression of clock genes oscillates with a 24-h period. Our data indicate that the circadian 24-h cycle is the dominant driver of rhythmic gene expression in this intertidal inhabitant despite the profound environmental and physiological changes associated with aerial exposure during tidal emergence.
language: eng
source:
identifier: E-ISSN: 1091-6490 ; DOI: 10.1073/pnas.1111076108
fulltext: fulltext
issn:
  • 10916490
  • 1091-6490
url: Link


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titleCircadian cycles are the dominant transcriptional rhythm in the intertidal mussel Mytilus californianus.
creatorConnor, Kwasi M ; Gracey, Andrew Y
contributorConnor, Kwasi M (correspondence author) ; Connor, Kwasi M (record owner)
ispartofProceedings of the National Academy of Sciences of the United States of America, September 20, 2011, Vol.108(38), pp.16110-16115
identifierE-ISSN: 1091-6490 ; DOI: 10.1073/pnas.1111076108
subjectAnimals–Genetics ; Biological Clocks–Physiology ; California–Genetics ; Circadian Rhythm–Genetics ; Cluster Analysis–Genetics ; Ecosystem–Genetics ; Gene Expression Profiling–Genetics ; Gene Expression Regulation–Genetics ; Geography–Genetics ; Molecular Sequence Data–Genetics ; Mytilus–Genetics ; Oligonucleotide Array Sequence Analysis–Genetics ; Periodicity–Genetics ; Reverse Transcriptase Polymerase Chain Reaction–Genetics ; Transcriptome–Genetics
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Residents in the marine intertidal, the zone where terrestrial and marine habitats converge, inhabit an environment that is subject to both the 24-h day and night daily rhythm of the terrestrial earth and also the 12.4-h ebb and flow of the tidal cycle. Here, we investigate the relative contribution of the daily and tidal cycle on the physiology of intertidal mussels, Mytilus californianus, by monitoring rhythms of gene expression in both simulated and natural tidal environments. We report that > 40% of the transcriptome exhibits rhythmic gene expression, and that depending on the specific tidal conditions, between 80% and 90% of the rhythmic transcripts follow a circadian expression pattern with a period of 24 to 26 h. Consistent with the dominant effect of the circadian cycle we show that the expression of clock genes oscillates with a 24-h period. Our data indicate that the circadian 24-h cycle is the dominant driver of rhythmic gene expression in this intertidal inhabitant despite the profound environmental and physiological changes associated with aerial exposure during tidal emergence.

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