Impact of persistent barrier to gene flow and catastrophic events on red algae evolutionary history along the Chilean coast
Historical vicariance events, linked to the existence of stable physical barriers to gene flow, generate concordant genetic breaks in co-distributed species while stochastic processes (e.g., costal uplift) could cause species-specific genetic breaks as a result of local strong demographic bottleneck...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2024-03-01
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| Series: | Frontiers in Genetics |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fgene.2024.1336427/full |
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| author | Oscar R. Huanel Oscar R. Huanel Oscar R. Huanel Alejandro E. Montecinos Francisco Sepúlveda-Espinoza Marie-Laure Guillemin Marie-Laure Guillemin Marie-Laure Guillemin Marie-Laure Guillemin |
| author_facet | Oscar R. Huanel Oscar R. Huanel Oscar R. Huanel Alejandro E. Montecinos Francisco Sepúlveda-Espinoza Marie-Laure Guillemin Marie-Laure Guillemin Marie-Laure Guillemin Marie-Laure Guillemin |
| author_sort | Oscar R. Huanel |
| collection | DOAJ |
| description | Historical vicariance events, linked to the existence of stable physical barriers to gene flow, generate concordant genetic breaks in co-distributed species while stochastic processes (e.g., costal uplift) could cause species-specific genetic breaks as a result of local strong demographic bottlenecks or extinction. In Chile, previous studies show that the area of the 30°S-33°S could correspond to a stable barrier to gene flow that have affected the genetic structure of various algae and marine invertebrates. Here we sequenced two organellar genes (COI and rbcL) in four taxonomically accepted co-distributed red seaweeds species characterized by a low dispersal potential: Mazzaella laminarioides, M. membranacea, Asterfilopsis disciplinalis, and Ahnfeltiopsis vermicularis. Our results revealed the existence of ten strongly differentiated linages in the taxa studied. Strong genetic breaks, concordant in both space and time (divergence estimated to have occurred some 2.9–12.4 million years ago), were observed between taxa distributed across the 33°S. Conversely, in the Central/South part of the Chilean coast, the localization of the genetic breaks/sub-structure observed varied widely (36°S, 38°S, 39°S, and 40°S). These results suggest that a major historical vicariance event has modeled the genetic structure of several Chilean marine organisms in the north of the Chilean coast during the mid-Miocene, while more recent stochastic events and genetic drift could be the driving forces of genetic divergence/structuration in the central-southern part of the coast. |
| first_indexed | 2024-04-25T01:42:38Z |
| format | Article |
| id | doaj.art-e685d6191dd4494c89e7ad347b9f5190 |
| institution | Directory Open Access Journal |
| issn | 1664-8021 |
| language | English |
| last_indexed | 2024-04-25T01:42:38Z |
| publishDate | 2024-03-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Genetics |
| spelling | doaj.art-e685d6191dd4494c89e7ad347b9f51902024-03-08T04:45:59ZengFrontiers Media S.A.Frontiers in Genetics1664-80212024-03-011510.3389/fgene.2024.13364271336427Impact of persistent barrier to gene flow and catastrophic events on red algae evolutionary history along the Chilean coastOscar R. Huanel0Oscar R. Huanel1Oscar R. Huanel2Alejandro E. Montecinos3Francisco Sepúlveda-Espinoza4Marie-Laure Guillemin5Marie-Laure Guillemin6Marie-Laure Guillemin7Marie-Laure Guillemin8Núcleo Milenio MASH, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, ChileIRL 3614 Evolutionary Biology and Ecology of Algae, Centre National de la Recherche Scientifique (CNRS), Sorbonne Université, Pontificia Universidad Católica de Chile, Universidad Austral de Chile, Station Biologique, Roscoff, FranceGEMA Center for Genomics, Ecology and Environment, Universidad Mayor, Santiago, ChileInstituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, ChileInstituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, ChileIRL 3614 Evolutionary Biology and Ecology of Algae, Centre National de la Recherche Scientifique (CNRS), Sorbonne Université, Pontificia Universidad Católica de Chile, Universidad Austral de Chile, Station Biologique, Roscoff, FranceInstituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, ChileNúcleo Milenio MASH, Instituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, ChileCentro FONDAP de Investigación de Ecosistemas Marinos de Altas Latitudes (IDEAL), Valdivia, ChileHistorical vicariance events, linked to the existence of stable physical barriers to gene flow, generate concordant genetic breaks in co-distributed species while stochastic processes (e.g., costal uplift) could cause species-specific genetic breaks as a result of local strong demographic bottlenecks or extinction. In Chile, previous studies show that the area of the 30°S-33°S could correspond to a stable barrier to gene flow that have affected the genetic structure of various algae and marine invertebrates. Here we sequenced two organellar genes (COI and rbcL) in four taxonomically accepted co-distributed red seaweeds species characterized by a low dispersal potential: Mazzaella laminarioides, M. membranacea, Asterfilopsis disciplinalis, and Ahnfeltiopsis vermicularis. Our results revealed the existence of ten strongly differentiated linages in the taxa studied. Strong genetic breaks, concordant in both space and time (divergence estimated to have occurred some 2.9–12.4 million years ago), were observed between taxa distributed across the 33°S. Conversely, in the Central/South part of the Chilean coast, the localization of the genetic breaks/sub-structure observed varied widely (36°S, 38°S, 39°S, and 40°S). These results suggest that a major historical vicariance event has modeled the genetic structure of several Chilean marine organisms in the north of the Chilean coast during the mid-Miocene, while more recent stochastic events and genetic drift could be the driving forces of genetic divergence/structuration in the central-southern part of the coast.https://www.frontiersin.org/articles/10.3389/fgene.2024.1336427/fullcomparative phylogeographysoutheast pacificrhodophytacoastal upliftactual and historical barriers to gene flow |
| spellingShingle | Oscar R. Huanel Oscar R. Huanel Oscar R. Huanel Alejandro E. Montecinos Francisco Sepúlveda-Espinoza Marie-Laure Guillemin Marie-Laure Guillemin Marie-Laure Guillemin Marie-Laure Guillemin Impact of persistent barrier to gene flow and catastrophic events on red algae evolutionary history along the Chilean coast Frontiers in Genetics comparative phylogeography southeast pacific rhodophyta coastal uplift actual and historical barriers to gene flow |
| title | Impact of persistent barrier to gene flow and catastrophic events on red algae evolutionary history along the Chilean coast |
| title_full | Impact of persistent barrier to gene flow and catastrophic events on red algae evolutionary history along the Chilean coast |
| title_fullStr | Impact of persistent barrier to gene flow and catastrophic events on red algae evolutionary history along the Chilean coast |
| title_full_unstemmed | Impact of persistent barrier to gene flow and catastrophic events on red algae evolutionary history along the Chilean coast |
| title_short | Impact of persistent barrier to gene flow and catastrophic events on red algae evolutionary history along the Chilean coast |
| title_sort | impact of persistent barrier to gene flow and catastrophic events on red algae evolutionary history along the chilean coast |
| topic | comparative phylogeography southeast pacific rhodophyta coastal uplift actual and historical barriers to gene flow |
| url | https://www.frontiersin.org/articles/10.3389/fgene.2024.1336427/full |
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