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Large-scale phylogenetic analyses reveal multiple gains of actinorhizal nitrogen-fixing symbioses in angiosperms associated with climate change

Nitrogen is fundamental to all life forms and is also one of the most limiting of nutrients for plant growth. Several clades of angiosperms have developed symbiotic relationships with actinorhizal bacteria that fix atmospheric nitrogen and increase access to this nutrient. However, the evolutionary...

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Autores principales: Li, Hong-Lei, Wang, Wei, Mortimer, Peter E., Li, Rui-Qi, Li, De-Zhu, Hyde, Kevin D., Xu, Jian-Chu, Soltis, Douglas E., Chen, Zhi-Duan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4650596/
https://www.ncbi.nlm.nih.gov/pubmed/26354898
http://dx.doi.org/10.1038/srep14023
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author Li, Hong-Lei
Wang, Wei
Mortimer, Peter E.
Li, Rui-Qi
Li, De-Zhu
Hyde, Kevin D.
Xu, Jian-Chu
Soltis, Douglas E.
Chen, Zhi-Duan
author_facet Li, Hong-Lei
Wang, Wei
Mortimer, Peter E.
Li, Rui-Qi
Li, De-Zhu
Hyde, Kevin D.
Xu, Jian-Chu
Soltis, Douglas E.
Chen, Zhi-Duan
author_sort Li, Hong-Lei
collection PubMed
description Nitrogen is fundamental to all life forms and is also one of the most limiting of nutrients for plant growth. Several clades of angiosperms have developed symbiotic relationships with actinorhizal bacteria that fix atmospheric nitrogen and increase access to this nutrient. However, the evolutionary patterns of actinorhizal nitrogen-fixing symbioses remain unclear to date. Furthermore the underlying environmental pressures that led to the gain of symbiotic actinorhizal nitrogen fixation have never been investigated. Here, we present the most comprehensive genus-level phylogenetic analysis of the nitrogen-fixing angiosperms based on three plastid loci. We found that actinorhizal nitrogen-fixing species are distributed in nine distinct lineages. By dating the branching events, we determined that seven actinorhizal nitrogen-fixing lineages originated during the Late Cretaceous, and two more emerged during the Eocene. We put forward a hypothesis that multiple gains of actinorhizal nitrogen-fixing symbioses in angiosperms may have been associated with increased global temperatures and high levels of atmospheric carbon dioxide during these two time periods, as well as the availability of open habitats with high light conditions. Our nearly complete genus-level time-tree for the nitrogen-fixing clade is a significant advance in understanding the evolutionary and ecological background of this important symbiosis between plants and bacteria.
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spelling pubmed-46505962015-11-24 Large-scale phylogenetic analyses reveal multiple gains of actinorhizal nitrogen-fixing symbioses in angiosperms associated with climate change Li, Hong-Lei Wang, Wei Mortimer, Peter E. Li, Rui-Qi Li, De-Zhu Hyde, Kevin D. Xu, Jian-Chu Soltis, Douglas E. Chen, Zhi-Duan Sci Rep Article Nitrogen is fundamental to all life forms and is also one of the most limiting of nutrients for plant growth. Several clades of angiosperms have developed symbiotic relationships with actinorhizal bacteria that fix atmospheric nitrogen and increase access to this nutrient. However, the evolutionary patterns of actinorhizal nitrogen-fixing symbioses remain unclear to date. Furthermore the underlying environmental pressures that led to the gain of symbiotic actinorhizal nitrogen fixation have never been investigated. Here, we present the most comprehensive genus-level phylogenetic analysis of the nitrogen-fixing angiosperms based on three plastid loci. We found that actinorhizal nitrogen-fixing species are distributed in nine distinct lineages. By dating the branching events, we determined that seven actinorhizal nitrogen-fixing lineages originated during the Late Cretaceous, and two more emerged during the Eocene. We put forward a hypothesis that multiple gains of actinorhizal nitrogen-fixing symbioses in angiosperms may have been associated with increased global temperatures and high levels of atmospheric carbon dioxide during these two time periods, as well as the availability of open habitats with high light conditions. Our nearly complete genus-level time-tree for the nitrogen-fixing clade is a significant advance in understanding the evolutionary and ecological background of this important symbiosis between plants and bacteria. Nature Publishing Group 2015-09-10 /pmc/articles/PMC4650596/ /pubmed/26354898 http://dx.doi.org/10.1038/srep14023 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Li, Hong-Lei
Wang, Wei
Mortimer, Peter E.
Li, Rui-Qi
Li, De-Zhu
Hyde, Kevin D.
Xu, Jian-Chu
Soltis, Douglas E.
Chen, Zhi-Duan
Large-scale phylogenetic analyses reveal multiple gains of actinorhizal nitrogen-fixing symbioses in angiosperms associated with climate change
title Large-scale phylogenetic analyses reveal multiple gains of actinorhizal nitrogen-fixing symbioses in angiosperms associated with climate change
title_full Large-scale phylogenetic analyses reveal multiple gains of actinorhizal nitrogen-fixing symbioses in angiosperms associated with climate change
title_fullStr Large-scale phylogenetic analyses reveal multiple gains of actinorhizal nitrogen-fixing symbioses in angiosperms associated with climate change
title_full_unstemmed Large-scale phylogenetic analyses reveal multiple gains of actinorhizal nitrogen-fixing symbioses in angiosperms associated with climate change
title_short Large-scale phylogenetic analyses reveal multiple gains of actinorhizal nitrogen-fixing symbioses in angiosperms associated with climate change
title_sort large-scale phylogenetic analyses reveal multiple gains of actinorhizal nitrogen-fixing symbioses in angiosperms associated with climate change
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4650596/
https://www.ncbi.nlm.nih.gov/pubmed/26354898
http://dx.doi.org/10.1038/srep14023
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