Differences in genetic diversity and reproductive performance of a moss, a leafy liverwort, and a thalloid liverwort from forests of contrasting ages
Wyatt, Robert ; Cronberg, Nils LU
and Odrzykoski, Ireneusz J.
(2023)
In Bryologist
126(1).
p.129-138
- Abstract
- Two competing predictions regarding highly dispersible clonal plants, such as bryophytes, expect levels of genetic diversity to either increase or decrease over time following a disturbance that opens habitat for colonization. Following up on previous research that found higher levels of genetic variation in bryophytes from relatively undisturbed forest sites, we examined unisexual, haploid species of a moss (Plagiomnium ciliare), a leafy liverwort (Porella platyphylloidea), and a thalloid liverwort (Conocephalum conicum sensu lato) from the Mountains, Piedmont, and Coastal Plain of the southeastern United States. In terms of time since last disturbance, sites were ranked Mountains > Piedmont > Coastal Plain. Measures of genetic... (More)
- Two competing predictions regarding highly dispersible clonal plants, such as bryophytes, expect levels of genetic diversity to either increase or decrease over time following a disturbance that opens habitat for colonization. Following up on previous research that found higher levels of genetic variation in bryophytes from relatively undisturbed forest sites, we examined unisexual, haploid species of a moss (Plagiomnium ciliare), a leafy liverwort (Porella platyphylloidea), and a thalloid liverwort (Conocephalum conicum sensu lato) from the Mountains, Piedmont, and Coastal Plain of the southeastern United States. In terms of time since last disturbance, sites were ranked Mountains > Piedmont > Coastal Plain. Measures of genetic variation, including percentage of loci polymorphic, mean number of alleles per locus, mean expected heterozygosity, and number of multilocus genotypes, all fit the prediction that genetic diversity should increase over time. We also examined several components of reproductive success expected to influence levels of genetic variation, including colony size, colony mixing, sex expression, phenotypic sex ratio, and sporophyte production (percentage of females producing sporophytes). Most, but not all, of our predictions for populations of varying time since last disturbance were fulfilled, although other ecological differences related to soil, climate, and vegetation are also likely to influence reproductive success. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/5ddca384-4667-4acc-baa2-6cdee74ee9ef
- author
- Wyatt, Robert
; Cronberg, Nils
LU
and Odrzykoski, Ireneusz J.
- organization
- publishing date
- 2023
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- bryophyte, reproduction, genetic variation, population genetics, sex ratio, recruitment, sex expression
- in
- Bryologist
- volume
- 126
- issue
- 1
- pages
- 129 - 138
- publisher
- AMER BRYOLOGICAL LICHENOLOGICAL SOCIETY INC
- external identifiers
-
- scopus:85150190191
- ISSN
- 1938-4378
- DOI
- 10.1639/0007-2745-126.1.129
- language
- English
- LU publication?
- yes
- id
- 5ddca384-4667-4acc-baa2-6cdee74ee9ef
- date added to LUP
- 2023-03-31 15:05:05
- date last changed
- 2024-05-27 14:44:34
@article{5ddca384-4667-4acc-baa2-6cdee74ee9ef,
abstract = {{Two competing predictions regarding highly dispersible clonal plants, such as bryophytes, expect levels of genetic diversity to either increase or decrease over time following a disturbance that opens habitat for colonization. Following up on previous research that found higher levels of genetic variation in bryophytes from relatively undisturbed forest sites, we examined unisexual, haploid species of a moss (Plagiomnium ciliare), a leafy liverwort (Porella platyphylloidea), and a thalloid liverwort (Conocephalum conicum sensu lato) from the Mountains, Piedmont, and Coastal Plain of the southeastern United States. In terms of time since last disturbance, sites were ranked Mountains > Piedmont > Coastal Plain. Measures of genetic variation, including percentage of loci polymorphic, mean number of alleles per locus, mean expected heterozygosity, and number of multilocus genotypes, all fit the prediction that genetic diversity should increase over time. We also examined several components of reproductive success expected to influence levels of genetic variation, including colony size, colony mixing, sex expression, phenotypic sex ratio, and sporophyte production (percentage of females producing sporophytes). Most, but not all, of our predictions for populations of varying time since last disturbance were fulfilled, although other ecological differences related to soil, climate, and vegetation are also likely to influence reproductive success.}},
author = {{Wyatt, Robert and Cronberg, Nils and Odrzykoski, Ireneusz J.}},
issn = {{1938-4378}},
keywords = {{bryophyte; reproduction; genetic variation; population genetics; sex ratio; recruitment; sex expression}},
language = {{eng}},
number = {{1}},
pages = {{129--138}},
publisher = {{AMER BRYOLOGICAL LICHENOLOGICAL SOCIETY INC}},
series = {{Bryologist}},
title = {{Differences in genetic diversity and reproductive performance of a moss, a leafy liverwort, and a thalloid liverwort from forests of contrasting ages}},
url = {{http://dx.doi.org/10.1639/0007-2745-126.1.129}},
doi = {{10.1639/0007-2745-126.1.129}},
volume = {{126}},
year = {{2023}},
}