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Conservation and Diversification of Circadian Rhythmicity Between a Model Crassulacean Acid Metabolism Plant Kalanchoë fedtschenkoi and a Model C(3) Photosynthesis Plant Arabidopsis thaliana

Crassulacean acid metabolism (CAM) improves photosynthetic efficiency under limited water availability relative to C(3) photosynthesis. It is widely accepted that CAM plants have evolved from C(3) plants and it is hypothesized that CAM is under the control of the internal circadian clock. However, t...

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Autores principales: Moseley, Robert C., Mewalal, Ritesh, Motta, Francis, Tuskan, Gerald A., Haase, Steve, Yang, Xiaohan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6279919/
https://www.ncbi.nlm.nih.gov/pubmed/30546378
http://dx.doi.org/10.3389/fpls.2018.01757
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author Moseley, Robert C.
Mewalal, Ritesh
Motta, Francis
Tuskan, Gerald A.
Haase, Steve
Yang, Xiaohan
author_facet Moseley, Robert C.
Mewalal, Ritesh
Motta, Francis
Tuskan, Gerald A.
Haase, Steve
Yang, Xiaohan
author_sort Moseley, Robert C.
collection PubMed
description Crassulacean acid metabolism (CAM) improves photosynthetic efficiency under limited water availability relative to C(3) photosynthesis. It is widely accepted that CAM plants have evolved from C(3) plants and it is hypothesized that CAM is under the control of the internal circadian clock. However, the role that the circadian clock plays in the evolution of CAM is not well understood. To identify the molecular basis of circadian control over CAM evolution, rhythmic gene sets were identified in a CAM model plant species (Kalanchoë fedtschenkoi) and a C(3) model plant species (Arabidopsis thaliana) through analysis of diel time-course gene expression data using multiple periodicity detection algorithms. Based on protein sequences, ortholog groups were constructed containing genes from each of these two species. The ortholog groups were categorized into five gene sets based on conservation and diversification of rhythmic gene expression. Interestingly, minimal functional overlap was observed when comparing the rhythmic gene sets of each species. Specifcally, metabolic processes were enriched in the gene set under circadian control in K. fedtschenkoi and numerous genes were found to have retained or gained rhythmic expression in K. fedtsechenkoi. Additonally, several rhythmic orthologs, including CAM-related orthologs, displayed phase shifts between species. Results of this analysis point to several mechanisms by which the circadian clock plays a role in the evolution of CAM. These genes provide a set of testable hypotheses for future experiments.
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spelling pubmed-62799192018-12-13 Conservation and Diversification of Circadian Rhythmicity Between a Model Crassulacean Acid Metabolism Plant Kalanchoë fedtschenkoi and a Model C(3) Photosynthesis Plant Arabidopsis thaliana Moseley, Robert C. Mewalal, Ritesh Motta, Francis Tuskan, Gerald A. Haase, Steve Yang, Xiaohan Front Plant Sci Plant Science Crassulacean acid metabolism (CAM) improves photosynthetic efficiency under limited water availability relative to C(3) photosynthesis. It is widely accepted that CAM plants have evolved from C(3) plants and it is hypothesized that CAM is under the control of the internal circadian clock. However, the role that the circadian clock plays in the evolution of CAM is not well understood. To identify the molecular basis of circadian control over CAM evolution, rhythmic gene sets were identified in a CAM model plant species (Kalanchoë fedtschenkoi) and a C(3) model plant species (Arabidopsis thaliana) through analysis of diel time-course gene expression data using multiple periodicity detection algorithms. Based on protein sequences, ortholog groups were constructed containing genes from each of these two species. The ortholog groups were categorized into five gene sets based on conservation and diversification of rhythmic gene expression. Interestingly, minimal functional overlap was observed when comparing the rhythmic gene sets of each species. Specifcally, metabolic processes were enriched in the gene set under circadian control in K. fedtschenkoi and numerous genes were found to have retained or gained rhythmic expression in K. fedtsechenkoi. Additonally, several rhythmic orthologs, including CAM-related orthologs, displayed phase shifts between species. Results of this analysis point to several mechanisms by which the circadian clock plays a role in the evolution of CAM. These genes provide a set of testable hypotheses for future experiments. Frontiers Media S.A. 2018-11-28 /pmc/articles/PMC6279919/ /pubmed/30546378 http://dx.doi.org/10.3389/fpls.2018.01757 Text en Copyright © 2018 Moseley, Mewalal, Motta, Tuskan, Haase and Yang. http://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 Plant Science
Moseley, Robert C.
Mewalal, Ritesh
Motta, Francis
Tuskan, Gerald A.
Haase, Steve
Yang, Xiaohan
Conservation and Diversification of Circadian Rhythmicity Between a Model Crassulacean Acid Metabolism Plant Kalanchoë fedtschenkoi and a Model C(3) Photosynthesis Plant Arabidopsis thaliana
title Conservation and Diversification of Circadian Rhythmicity Between a Model Crassulacean Acid Metabolism Plant Kalanchoë fedtschenkoi and a Model C(3) Photosynthesis Plant Arabidopsis thaliana
title_full Conservation and Diversification of Circadian Rhythmicity Between a Model Crassulacean Acid Metabolism Plant Kalanchoë fedtschenkoi and a Model C(3) Photosynthesis Plant Arabidopsis thaliana
title_fullStr Conservation and Diversification of Circadian Rhythmicity Between a Model Crassulacean Acid Metabolism Plant Kalanchoë fedtschenkoi and a Model C(3) Photosynthesis Plant Arabidopsis thaliana
title_full_unstemmed Conservation and Diversification of Circadian Rhythmicity Between a Model Crassulacean Acid Metabolism Plant Kalanchoë fedtschenkoi and a Model C(3) Photosynthesis Plant Arabidopsis thaliana
title_short Conservation and Diversification of Circadian Rhythmicity Between a Model Crassulacean Acid Metabolism Plant Kalanchoë fedtschenkoi and a Model C(3) Photosynthesis Plant Arabidopsis thaliana
title_sort conservation and diversification of circadian rhythmicity between a model crassulacean acid metabolism plant kalanchoë fedtschenkoi and a model c(3) photosynthesis plant arabidopsis thaliana
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6279919/
https://www.ncbi.nlm.nih.gov/pubmed/30546378
http://dx.doi.org/10.3389/fpls.2018.01757
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