Polyploids broadly generate novel haplotypes from trans-specific variation in Arabidopsis arenosa and Arabidopsis lyrata.
Polyploidy, the result of whole genome duplication (WGD), is widespread across the tree of life and is often associated with speciation and adaptability. It is thought that adaptation in autopolyploids (within-species polyploids) may be facilitated by increased access to genetic variation. This vari...
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2024-12-01
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| Series: | PLoS Genetics |
| Online Access: | https://doi.org/10.1371/journal.pgen.1011521 |
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| author | Magdalena Bohutínská Eliška Petříková Tom R Booker Cristina Vives Cobo Jakub Vlček Gabriela Šrámková Alžběta Poupětová Jakub Hojka Karol Marhold Levi Yant Filip Kolář Roswitha Schmickl |
| author_facet | Magdalena Bohutínská Eliška Petříková Tom R Booker Cristina Vives Cobo Jakub Vlček Gabriela Šrámková Alžběta Poupětová Jakub Hojka Karol Marhold Levi Yant Filip Kolář Roswitha Schmickl |
| author_sort | Magdalena Bohutínská |
| collection | DOAJ |
| description | Polyploidy, the result of whole genome duplication (WGD), is widespread across the tree of life and is often associated with speciation and adaptability. It is thought that adaptation in autopolyploids (within-species polyploids) may be facilitated by increased access to genetic variation. This variation may be sourced from gene flow with sister diploids and new access to other tetraploid lineages, as well as from increased mutational targets provided by doubled DNA content. Here, we deconstruct in detail the origins of haplotypes displaying the strongest selection signals in established, successful autopolyploids, Arabidopsis lyrata and Arabidopsis arenosa. We see strong signatures of selection in 17 genes implied in meiosis, cell cycle, and transcription across all four autotetraploid lineages present in our expanded sampling of 983 sequenced genomes. Most prominent in our results is the finding that the tetraploid-characteristic haplotypes with the most robust signals of selection were completely absent in all diploid sisters. In contrast, the fine-scaled variant 'mosaics' in the tetraploids originated from highly diverse evolutionary sources. These include widespread novel reassortments of trans-specific polymorphism from diploids, new mutations, and tetraploid-specific inter-species hybridization-a pattern that is in line with the broad-scale acquisition and reshuffling of potentially adaptive variation in tetraploids. |
| format | Article |
| id | doaj-art-e894c5483e4844ef8a415006c306eb41 |
| institution | DOAJ |
| issn | 1553-7390 1553-7404 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS Genetics |
| spelling | doaj-art-e894c5483e4844ef8a415006c306eb412025-08-20T02:59:38ZengPublic Library of Science (PLoS)PLoS Genetics1553-73901553-74042024-12-012012e101152110.1371/journal.pgen.1011521Polyploids broadly generate novel haplotypes from trans-specific variation in Arabidopsis arenosa and Arabidopsis lyrata.Magdalena BohutínskáEliška PetříkováTom R BookerCristina Vives CoboJakub VlčekGabriela ŠrámkováAlžběta PoupětováJakub HojkaKarol MarholdLevi YantFilip KolářRoswitha SchmicklPolyploidy, the result of whole genome duplication (WGD), is widespread across the tree of life and is often associated with speciation and adaptability. It is thought that adaptation in autopolyploids (within-species polyploids) may be facilitated by increased access to genetic variation. This variation may be sourced from gene flow with sister diploids and new access to other tetraploid lineages, as well as from increased mutational targets provided by doubled DNA content. Here, we deconstruct in detail the origins of haplotypes displaying the strongest selection signals in established, successful autopolyploids, Arabidopsis lyrata and Arabidopsis arenosa. We see strong signatures of selection in 17 genes implied in meiosis, cell cycle, and transcription across all four autotetraploid lineages present in our expanded sampling of 983 sequenced genomes. Most prominent in our results is the finding that the tetraploid-characteristic haplotypes with the most robust signals of selection were completely absent in all diploid sisters. In contrast, the fine-scaled variant 'mosaics' in the tetraploids originated from highly diverse evolutionary sources. These include widespread novel reassortments of trans-specific polymorphism from diploids, new mutations, and tetraploid-specific inter-species hybridization-a pattern that is in line with the broad-scale acquisition and reshuffling of potentially adaptive variation in tetraploids.https://doi.org/10.1371/journal.pgen.1011521 |
| spellingShingle | Magdalena Bohutínská Eliška Petříková Tom R Booker Cristina Vives Cobo Jakub Vlček Gabriela Šrámková Alžběta Poupětová Jakub Hojka Karol Marhold Levi Yant Filip Kolář Roswitha Schmickl Polyploids broadly generate novel haplotypes from trans-specific variation in Arabidopsis arenosa and Arabidopsis lyrata. PLoS Genetics |
| title | Polyploids broadly generate novel haplotypes from trans-specific variation in Arabidopsis arenosa and Arabidopsis lyrata. |
| title_full | Polyploids broadly generate novel haplotypes from trans-specific variation in Arabidopsis arenosa and Arabidopsis lyrata. |
| title_fullStr | Polyploids broadly generate novel haplotypes from trans-specific variation in Arabidopsis arenosa and Arabidopsis lyrata. |
| title_full_unstemmed | Polyploids broadly generate novel haplotypes from trans-specific variation in Arabidopsis arenosa and Arabidopsis lyrata. |
| title_short | Polyploids broadly generate novel haplotypes from trans-specific variation in Arabidopsis arenosa and Arabidopsis lyrata. |
| title_sort | polyploids broadly generate novel haplotypes from trans specific variation in arabidopsis arenosa and arabidopsis lyrata |
| url | https://doi.org/10.1371/journal.pgen.1011521 |
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