Cargando…

Spectres of Clock Evolution: Past, Present, and Yet to Come

Circadian clocks are phylogenetically widespread biological oscillators that allow organisms to entrain to environmental cycles and use their steady-state phase relationship to anticipate predictable daily phenomena – such as the light-dark transitions of a day – and prepare accordingly. Present fro...

Descripción completa

Detalles Bibliográficos
Autores principales: Jabbur, Maria Luísa, Johnson, Carl Hirschie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8874327/
https://www.ncbi.nlm.nih.gov/pubmed/35222066
http://dx.doi.org/10.3389/fphys.2021.815847
_version_ 1784657660552937472
author Jabbur, Maria Luísa
Johnson, Carl Hirschie
author_facet Jabbur, Maria Luísa
Johnson, Carl Hirschie
author_sort Jabbur, Maria Luísa
collection PubMed
description Circadian clocks are phylogenetically widespread biological oscillators that allow organisms to entrain to environmental cycles and use their steady-state phase relationship to anticipate predictable daily phenomena – such as the light-dark transitions of a day – and prepare accordingly. Present from cyanobacteria to mammals, circadian clocks are evolutionarily ancient and are thought to increase the fitness of the organisms that possess them by allowing for better resource usage and/or proper internal temporal order. Here, we review literature with respect to the ecology and evolution of circadian clocks, with a special focus on cyanobacteria as model organisms. We first discuss what can be inferred about future clock evolution in response to climate change, based on data from latitudinal clines and domestication. We then address our current understanding of the role that circadian clocks might be contributing to the adaptive fitness of cyanobacteria at the present time. Lastly, we discuss what is currently known about the oldest known circadian clock, and the early Earth conditions that could have led to its evolution.
format Online
Article
Text
id pubmed-8874327
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-88743272022-02-26 Spectres of Clock Evolution: Past, Present, and Yet to Come Jabbur, Maria Luísa Johnson, Carl Hirschie Front Physiol Physiology Circadian clocks are phylogenetically widespread biological oscillators that allow organisms to entrain to environmental cycles and use their steady-state phase relationship to anticipate predictable daily phenomena – such as the light-dark transitions of a day – and prepare accordingly. Present from cyanobacteria to mammals, circadian clocks are evolutionarily ancient and are thought to increase the fitness of the organisms that possess them by allowing for better resource usage and/or proper internal temporal order. Here, we review literature with respect to the ecology and evolution of circadian clocks, with a special focus on cyanobacteria as model organisms. We first discuss what can be inferred about future clock evolution in response to climate change, based on data from latitudinal clines and domestication. We then address our current understanding of the role that circadian clocks might be contributing to the adaptive fitness of cyanobacteria at the present time. Lastly, we discuss what is currently known about the oldest known circadian clock, and the early Earth conditions that could have led to its evolution. Frontiers Media S.A. 2022-02-11 /pmc/articles/PMC8874327/ /pubmed/35222066 http://dx.doi.org/10.3389/fphys.2021.815847 Text en Copyright © 2022 Jabbur and Johnson. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Physiology
Jabbur, Maria Luísa
Johnson, Carl Hirschie
Spectres of Clock Evolution: Past, Present, and Yet to Come
title Spectres of Clock Evolution: Past, Present, and Yet to Come
title_full Spectres of Clock Evolution: Past, Present, and Yet to Come
title_fullStr Spectres of Clock Evolution: Past, Present, and Yet to Come
title_full_unstemmed Spectres of Clock Evolution: Past, Present, and Yet to Come
title_short Spectres of Clock Evolution: Past, Present, and Yet to Come
title_sort spectres of clock evolution: past, present, and yet to come
topic Physiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8874327/
https://www.ncbi.nlm.nih.gov/pubmed/35222066
http://dx.doi.org/10.3389/fphys.2021.815847
work_keys_str_mv AT jabburmarialuisa spectresofclockevolutionpastpresentandyettocome
AT johnsoncarlhirschie spectresofclockevolutionpastpresentandyettocome