Genetic Diversity and Population Structure in Bryophyte With Facultative Nannandry
Among plants, gender dimorphism occurs in about 10% of all angiosperms and more than 50% of all moss taxa, with dwarf males (DM) found exclusively in some unisexual mosses. In this study, we explore the role of male dwarfism as a reproductive strategy in the widespread acrocarpous moss Dicranum scop...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2021-04-01
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| Series: | Frontiers in Plant Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2021.517547/full |
| _version_ | 1819146773090795520 |
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| author | Annick S. Lang Thies Gehrmann Nils Cronberg |
| author_facet | Annick S. Lang Thies Gehrmann Nils Cronberg |
| author_sort | Annick S. Lang |
| collection | DOAJ |
| description | Among plants, gender dimorphism occurs in about 10% of all angiosperms and more than 50% of all moss taxa, with dwarf males (DM) found exclusively in some unisexual mosses. In this study, we explore the role of male dwarfism as a reproductive strategy in the widespread acrocarpous moss Dicranum scoparium, which has facultative male dwarfism, having both dwarf males (DMs) and normal-sized males (NMs). We retrieved 119 SNP markers from transcriptomes which were used to genotype 403 samples from 11 sites at seven localities in southern Sweden. Our aims were to compare the genetic variability and genetic structure of sexually reproducing populations at different geographic levels (cushion, site, and locality) and compare in particular the relative contribution of females, dwarf males and normal-sized males to the observed genetic diversity. The numbers of DMs differed strongly between sites, but when present, they usually outnumbered both females and NMs. Low genetic differentiation was found at locality level. Genetic differentiation was strongest between cushions for females and NMs and within cushions for DMs indicating small scale structuring and sometimes inbreeding. NMs were more clonal than either DMs or females. Genetic diversity was similar between females and DMs, but lower for NMs. Two haplotypes were shared between females and DMs and one haplotype was shared between a DM and a NM. In conclusion, our results show that DMs and NMs play different roles in reproduction, inbreeding may occur at cushion level, but gene flow is high enough to prevent substantial genetic drift. |
| first_indexed | 2024-12-22T13:19:15Z |
| format | Article |
| id | doaj.art-88f59a5f4f0148eb86d0680cea825f8a |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-12-22T13:19:15Z |
| publishDate | 2021-04-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-88f59a5f4f0148eb86d0680cea825f8a2022-12-21T18:24:30ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2021-04-011210.3389/fpls.2021.517547517547Genetic Diversity and Population Structure in Bryophyte With Facultative NannandryAnnick S. Lang0Thies Gehrmann1Nils Cronberg2Department of Biology, Lund University, Lund, SwedenBiomedical Data Sciences, Leiden University Medical Center, Leiden, NetherlandsDepartment of Biology, Lund University, Lund, SwedenAmong plants, gender dimorphism occurs in about 10% of all angiosperms and more than 50% of all moss taxa, with dwarf males (DM) found exclusively in some unisexual mosses. In this study, we explore the role of male dwarfism as a reproductive strategy in the widespread acrocarpous moss Dicranum scoparium, which has facultative male dwarfism, having both dwarf males (DMs) and normal-sized males (NMs). We retrieved 119 SNP markers from transcriptomes which were used to genotype 403 samples from 11 sites at seven localities in southern Sweden. Our aims were to compare the genetic variability and genetic structure of sexually reproducing populations at different geographic levels (cushion, site, and locality) and compare in particular the relative contribution of females, dwarf males and normal-sized males to the observed genetic diversity. The numbers of DMs differed strongly between sites, but when present, they usually outnumbered both females and NMs. Low genetic differentiation was found at locality level. Genetic differentiation was strongest between cushions for females and NMs and within cushions for DMs indicating small scale structuring and sometimes inbreeding. NMs were more clonal than either DMs or females. Genetic diversity was similar between females and DMs, but lower for NMs. Two haplotypes were shared between females and DMs and one haplotype was shared between a DM and a NM. In conclusion, our results show that DMs and NMs play different roles in reproduction, inbreeding may occur at cushion level, but gene flow is high enough to prevent substantial genetic drift.https://www.frontiersin.org/articles/10.3389/fpls.2021.517547/fullSNPsexual reproductiongenetic variationspore dispersalnannandrymoss (Musci) |
| spellingShingle | Annick S. Lang Thies Gehrmann Nils Cronberg Genetic Diversity and Population Structure in Bryophyte With Facultative Nannandry Frontiers in Plant Science SNP sexual reproduction genetic variation spore dispersal nannandry moss (Musci) |
| title | Genetic Diversity and Population Structure in Bryophyte With Facultative Nannandry |
| title_full | Genetic Diversity and Population Structure in Bryophyte With Facultative Nannandry |
| title_fullStr | Genetic Diversity and Population Structure in Bryophyte With Facultative Nannandry |
| title_full_unstemmed | Genetic Diversity and Population Structure in Bryophyte With Facultative Nannandry |
| title_short | Genetic Diversity and Population Structure in Bryophyte With Facultative Nannandry |
| title_sort | genetic diversity and population structure in bryophyte with facultative nannandry |
| topic | SNP sexual reproduction genetic variation spore dispersal nannandry moss (Musci) |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2021.517547/full |
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