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Convergent molecular evolution of phosphoenolpyruvate carboxylase gene family in C(4) and crassulacean acid metabolism plants
Phosphoenolpyruvate carboxylase (PEPC), as the key enzyme in initial carbon fixation of C(4)and crassulacean acid mechanism (CAM) pathways, was thought to undergo convergent adaptive changes resulting in the convergent evolution of C(4) and CAM photosynthesis in vascular plants. However, the integra...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
PeerJ Inc.
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8784020/ https://www.ncbi.nlm.nih.gov/pubmed/35116203 http://dx.doi.org/10.7717/peerj.12828 |
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author | Shu, Jiang-Ping Yan, Yue-Hong Wang, Rui-Jiang |
author_facet | Shu, Jiang-Ping Yan, Yue-Hong Wang, Rui-Jiang |
author_sort | Shu, Jiang-Ping |
collection | PubMed |
description | Phosphoenolpyruvate carboxylase (PEPC), as the key enzyme in initial carbon fixation of C(4)and crassulacean acid mechanism (CAM) pathways, was thought to undergo convergent adaptive changes resulting in the convergent evolution of C(4) and CAM photosynthesis in vascular plants. However, the integral evolutionary history and convergence of PEPC in plants remain poorly understood. In the present study, we identified the members of PEPC gene family across green plants with seventeen genomic datasets, found ten conserved motifs and modeled three-dimensional protein structures of 90 plant-type PEPC genes. After reconstructing PEPC gene family tree and reconciled with species tree, we found PEPC genes underwent 71 gene duplication events and 16 gene loss events, which might result from whole-genome duplication events in plants. Based on the phylogenetic tree of the PEPC gene family, we detected four convergent evolution sites of PEPC in C(4) species but none in CAM species. The PEPC gene family was ubiquitous and highly conservative in green plants. After originating from gene duplication of ancestral C3-PEPC, C4-PEPC isoforms underwent convergent molecular substitution that might facilitate the convergent evolution of C(4) photosynthesis in Angiosperms. However, there was no evidence for convergent molecular evolution of PEPC genes between CAM plants. Our findings help to understand the origin and convergent evolution of C(4) and CAM plants and shed light on the adaptation of plants in dry, hot environments. |
format | Online Article Text |
id | pubmed-8784020 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | PeerJ Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-87840202022-02-02 Convergent molecular evolution of phosphoenolpyruvate carboxylase gene family in C(4) and crassulacean acid metabolism plants Shu, Jiang-Ping Yan, Yue-Hong Wang, Rui-Jiang PeerJ Agricultural Science Phosphoenolpyruvate carboxylase (PEPC), as the key enzyme in initial carbon fixation of C(4)and crassulacean acid mechanism (CAM) pathways, was thought to undergo convergent adaptive changes resulting in the convergent evolution of C(4) and CAM photosynthesis in vascular plants. However, the integral evolutionary history and convergence of PEPC in plants remain poorly understood. In the present study, we identified the members of PEPC gene family across green plants with seventeen genomic datasets, found ten conserved motifs and modeled three-dimensional protein structures of 90 plant-type PEPC genes. After reconstructing PEPC gene family tree and reconciled with species tree, we found PEPC genes underwent 71 gene duplication events and 16 gene loss events, which might result from whole-genome duplication events in plants. Based on the phylogenetic tree of the PEPC gene family, we detected four convergent evolution sites of PEPC in C(4) species but none in CAM species. The PEPC gene family was ubiquitous and highly conservative in green plants. After originating from gene duplication of ancestral C3-PEPC, C4-PEPC isoforms underwent convergent molecular substitution that might facilitate the convergent evolution of C(4) photosynthesis in Angiosperms. However, there was no evidence for convergent molecular evolution of PEPC genes between CAM plants. Our findings help to understand the origin and convergent evolution of C(4) and CAM plants and shed light on the adaptation of plants in dry, hot environments. PeerJ Inc. 2022-01-20 /pmc/articles/PMC8784020/ /pubmed/35116203 http://dx.doi.org/10.7717/peerj.12828 Text en ©2022 Shu et al. https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited. |
spellingShingle | Agricultural Science Shu, Jiang-Ping Yan, Yue-Hong Wang, Rui-Jiang Convergent molecular evolution of phosphoenolpyruvate carboxylase gene family in C(4) and crassulacean acid metabolism plants |
title | Convergent molecular evolution of phosphoenolpyruvate carboxylase gene family in C(4) and crassulacean acid metabolism plants |
title_full | Convergent molecular evolution of phosphoenolpyruvate carboxylase gene family in C(4) and crassulacean acid metabolism plants |
title_fullStr | Convergent molecular evolution of phosphoenolpyruvate carboxylase gene family in C(4) and crassulacean acid metabolism plants |
title_full_unstemmed | Convergent molecular evolution of phosphoenolpyruvate carboxylase gene family in C(4) and crassulacean acid metabolism plants |
title_short | Convergent molecular evolution of phosphoenolpyruvate carboxylase gene family in C(4) and crassulacean acid metabolism plants |
title_sort | convergent molecular evolution of phosphoenolpyruvate carboxylase gene family in c(4) and crassulacean acid metabolism plants |
topic | Agricultural Science |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8784020/ https://www.ncbi.nlm.nih.gov/pubmed/35116203 http://dx.doi.org/10.7717/peerj.12828 |
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