Timescale lessons of <em>Durinskia baltica</em> (Kryptoperidiniaceae, Dinophyta) from freshwater through a molecular phylogeny
Background: The evolutionary pattern of dinophytes is complex and requires comprehensive taxonomic studies addressing the species' development and morphology, ecology, evolution, and genetics. Questions: How recent was the transition of D. baltica from Mexico to freshwater based on a calibrat...
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| Format: | Article |
| Language: | English |
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Sociedad Botánica de México, A. C.
2023-07-01
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| Series: | Botanical Sciences |
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| Online Access: | https://www.botanicalsciences.com.mx/index.php/botanicalSciences/article/view/3259 |
| _version_ | 1827908230411452416 |
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| author | Beatriz Lira Rosaluz Tavera Eberto Novelo |
| author_facet | Beatriz Lira Rosaluz Tavera Eberto Novelo |
| author_sort | Beatriz Lira |
| collection | DOAJ |
| description | Background: The evolutionary pattern of dinophytes is complex and requires comprehensive taxonomic studies addressing the species' development and morphology, ecology, evolution, and genetics.
Questions: How recent was the transition of D. baltica from Mexico to freshwater based on a calibrated phylogeny tree of the Kryptoperidiniaceae?
Studied species and data description: Durinskia baltica, Kryptoperidiniaceae and the known fossil record of dinotoms (endosymbiont diatom-host dinophytes).
Study sites and dates: Xochimilco, Mexico City. 2010 to 2019.
Methods: Phylogenies were constructed with Bayesian inferences and host sequences were calibrated with a relaxed clock method.
Results: We obtained genetic sequences of the 18S rDNA sector in the host and the rbcL sector in the endosymbiont. The Nitzschia-type endosymbiont is genetically distinct from endosymbionts of other dinotomes with the same diatom type. In contrast, considering the known freshwater species of Durinskia, the genetic relationship between hosts is robust and of recent origin. The antiquity of the Mexican sequence coincides with the geological origin of the Xochimilco basin, suggesting particularities in the evolutionary history of dinotomes linked to the geographic regions they inhabit.
Conclusions: Our evolutionary scenario with a calibrated phylogeny indicates that the transition of Durinskia baltica to freshwater in the Xochimilco basin is geologically contextualized. The historical environmental change of Lake Xochimilco with respect to salinity corresponds with an initial colonization of D. baltica in a brackish environment and its subsequent adaptation to freshwater.
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| first_indexed | 2024-03-13T01:20:00Z |
| format | Article |
| id | doaj.art-01280c4932504142a57ee44f4d575138 |
| institution | Directory Open Access Journal |
| issn | 2007-4298 2007-4476 |
| language | English |
| last_indexed | 2024-03-13T01:20:00Z |
| publishDate | 2023-07-01 |
| publisher | Sociedad Botánica de México, A. C. |
| record_format | Article |
| series | Botanical Sciences |
| spelling | doaj.art-01280c4932504142a57ee44f4d5751382023-07-05T02:52:49ZengSociedad Botánica de México, A. C.Botanical Sciences2007-42982007-44762023-07-01100110.17129/botsci.3259Timescale lessons of <em>Durinskia baltica</em> (Kryptoperidiniaceae, Dinophyta) from freshwater through a molecular phylogenyBeatriz Lira0Rosaluz Tavera1Eberto Novelo2Department of Ecology and Natural Resources, Sciences School, National Autonomous University of Mexico, Mexico CityDepartment of Ecology and Natural Resources, Sciences School, National Autonomous University of Mexico, Mexico CityDepartment of Comparative Biology, Sciences School, National Autonomous University of Mexico, Mexico CityBackground: The evolutionary pattern of dinophytes is complex and requires comprehensive taxonomic studies addressing the species' development and morphology, ecology, evolution, and genetics. Questions: How recent was the transition of D. baltica from Mexico to freshwater based on a calibrated phylogeny tree of the Kryptoperidiniaceae? Studied species and data description: Durinskia baltica, Kryptoperidiniaceae and the known fossil record of dinotoms (endosymbiont diatom-host dinophytes). Study sites and dates: Xochimilco, Mexico City. 2010 to 2019. Methods: Phylogenies were constructed with Bayesian inferences and host sequences were calibrated with a relaxed clock method. Results: We obtained genetic sequences of the 18S rDNA sector in the host and the rbcL sector in the endosymbiont. The Nitzschia-type endosymbiont is genetically distinct from endosymbionts of other dinotomes with the same diatom type. In contrast, considering the known freshwater species of Durinskia, the genetic relationship between hosts is robust and of recent origin. The antiquity of the Mexican sequence coincides with the geological origin of the Xochimilco basin, suggesting particularities in the evolutionary history of dinotomes linked to the geographic regions they inhabit. Conclusions: Our evolutionary scenario with a calibrated phylogeny indicates that the transition of Durinskia baltica to freshwater in the Xochimilco basin is geologically contextualized. The historical environmental change of Lake Xochimilco with respect to salinity corresponds with an initial colonization of D. baltica in a brackish environment and its subsequent adaptation to freshwater. https://www.botanicalsciences.com.mx/index.php/botanicalSciences/article/view/3259Algaedinophytesdinotomsrelaxed clocktaxonomy |
| spellingShingle | Beatriz Lira Rosaluz Tavera Eberto Novelo Timescale lessons of <em>Durinskia baltica</em> (Kryptoperidiniaceae, Dinophyta) from freshwater through a molecular phylogeny Botanical Sciences Algae dinophytes dinotoms relaxed clock taxonomy |
| title | Timescale lessons of <em>Durinskia baltica</em> (Kryptoperidiniaceae, Dinophyta) from freshwater through a molecular phylogeny |
| title_full | Timescale lessons of <em>Durinskia baltica</em> (Kryptoperidiniaceae, Dinophyta) from freshwater through a molecular phylogeny |
| title_fullStr | Timescale lessons of <em>Durinskia baltica</em> (Kryptoperidiniaceae, Dinophyta) from freshwater through a molecular phylogeny |
| title_full_unstemmed | Timescale lessons of <em>Durinskia baltica</em> (Kryptoperidiniaceae, Dinophyta) from freshwater through a molecular phylogeny |
| title_short | Timescale lessons of <em>Durinskia baltica</em> (Kryptoperidiniaceae, Dinophyta) from freshwater through a molecular phylogeny |
| title_sort | timescale lessons of em durinskia baltica em kryptoperidiniaceae dinophyta from freshwater through a molecular phylogeny |
| topic | Algae dinophytes dinotoms relaxed clock taxonomy |
| url | https://www.botanicalsciences.com.mx/index.php/botanicalSciences/article/view/3259 |
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