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Conference Paper: Evolution of the circadian clock mechanism in prokaryotes

TitleEvolution of the circadian clock mechanism in prokaryotes
Authors
KeywordsCircadian System
Cyanobacteria
Evolution
Geological History
Issue Date2006
Citation
Israel Journal Of Ecology And Evolution, 2006, v. 52 n. 3-4, p. 343-357 How to Cite?
AbstractThe circadian system of prokaryotes is probably the oldest among the circadian systems of living organisms. The genes comprising the system are very different in their evolutionary histories. The reconstruction of macroevolution of the circadian genes in cyanobacteria suggests that there are probably at least two types of circadian systems, based either on the three kai genes (kaiA, kaiB, and kaiC) or on kaiB and kaiC. When referred to the recently published results about a genomic timescale of prokaryote evolution, the origin of kaiB and sasA corresponds to the appearance of anoxygenic photosynthesis, while the origin of the kaiBC operon corresponds to the time when oxygenic photosynthesis evolved. The results of the studies performed so far suggest that major steps in macroevolution of the circadian system in cyanobacteria have been related to global changes in the environment and to keystone advances in biological evolution. This macroevolution has involved selection, multiple lateral transfers, gene duplications, and fusions as its primary driving forces. The proposed scenario of the circadian system's macroevolution is far from complete and will be updated as new genomic and sequence data are accumulated.
Persistent Identifierhttp://hdl.handle.net/10722/179595
ISSN
2007 Impact Factor: 0.609
2015 SCImago Journal Rankings: 0.277
References

 

DC FieldValueLanguage
dc.contributor.authorDvornyk, Ven_US
dc.date.accessioned2012-12-19T10:00:05Z-
dc.date.available2012-12-19T10:00:05Z-
dc.date.issued2006en_US
dc.identifier.citationIsrael Journal Of Ecology And Evolution, 2006, v. 52 n. 3-4, p. 343-357en_US
dc.identifier.issn0021-2210en_US
dc.identifier.urihttp://hdl.handle.net/10722/179595-
dc.description.abstractThe circadian system of prokaryotes is probably the oldest among the circadian systems of living organisms. The genes comprising the system are very different in their evolutionary histories. The reconstruction of macroevolution of the circadian genes in cyanobacteria suggests that there are probably at least two types of circadian systems, based either on the three kai genes (kaiA, kaiB, and kaiC) or on kaiB and kaiC. When referred to the recently published results about a genomic timescale of prokaryote evolution, the origin of kaiB and sasA corresponds to the appearance of anoxygenic photosynthesis, while the origin of the kaiBC operon corresponds to the time when oxygenic photosynthesis evolved. The results of the studies performed so far suggest that major steps in macroevolution of the circadian system in cyanobacteria have been related to global changes in the environment and to keystone advances in biological evolution. This macroevolution has involved selection, multiple lateral transfers, gene duplications, and fusions as its primary driving forces. The proposed scenario of the circadian system's macroevolution is far from complete and will be updated as new genomic and sequence data are accumulated.en_US
dc.languageengen_US
dc.relation.ispartofIsrael Journal of Ecology and Evolutionen_US
dc.subjectCircadian Systemen_US
dc.subjectCyanobacteriaen_US
dc.subjectEvolutionen_US
dc.subjectGeological Historyen_US
dc.titleEvolution of the circadian clock mechanism in prokaryotesen_US
dc.typeConference_Paperen_US
dc.identifier.emailDvornyk, V: dvornyk@hku.hken_US
dc.identifier.authorityDvornyk, V=rp00693en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-35548988010en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-35548988010&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume52en_US
dc.identifier.issue3-4en_US
dc.identifier.spage343en_US
dc.identifier.epage357en_US
dc.identifier.scopusauthoridDvornyk, V=6701789786en_US

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