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Demography and mati...
Demography and mating system shape the genome-wide impact of purifying selection in Arabis alpina
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- Laenen, Benjamin (författare)
- Stockholms universitet,Institutionen för ekologi, miljö och botanik,Science for Life Laboratory (SciLifeLab),Stockholm Univ, Sci Life Lab, Dept Ecol Environm & Plant Sci, SE-10691 Stockholm, Sweden.
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- Tedder, Andrew (författare)
- Stockholms universitet,Institutionen för ekologi, miljö och botanik,Science for Life Laboratory (SciLifeLab),Stockholm Univ, Sci Life Lab, Dept Ecol Environm & Plant Sci, SE-10691 Stockholm, Sweden.
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- Nowak, Michael D. (författare)
- Stockholms universitet,Institutionen för ekologi, miljö och botanik,Science for Life Laboratory (SciLifeLab),Stockholm Univ, Sci Life Lab, Dept Ecol Environm & Plant Sci, SE-10691 Stockholm, Sweden.
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- Toräng, Per (författare)
- Uppsala universitet,Växtekologi och evolution
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- Wunder, Jörg (författare)
- Max Planck Inst Plant Breeding Res, D-50829 Cologne, Germany.
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- Wötzel, Stefan (författare)
- Max Planck Inst Plant Breeding Res, D-50829 Cologne, Germany.
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- Steige, Kim A. (författare)
- Stockholms universitet,Institutionen för ekologi, miljö och botanik,Science for Life Laboratory (SciLifeLab),Stockholm Univ, Sci Life Lab, Dept Ecol Environm & Plant Sci, SE-10691 Stockholm, Sweden.;Univ Cologne, Inst Bot, Biozentrum, D-50674 Cologne, Germany.
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- Kourmpetis, Yiannis (författare)
- Wageningen Univ & Res Ctr, Biometris, NL-6700 AC Wageningen, Netherlands.;Nestle Inst Hlth Sci, CH-1015 Lausanne, Switzerland.
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- Odong, Thomas (författare)
- Wageningen Univ & Res Ctr, Biometris, NL-6700 AC Wageningen, Netherlands.
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- Drouzas, Andreas D. (författare)
- Aristotle Univ Thessaloniki, Sch Biol, Thessaloniki 54124, Greece.
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- Bink, Marco C. A. M. (författare)
- Wageningen Univ & Res Ctr, Biometris, NL-6700 AC Wageningen, Netherlands.;Hendrix Genet Res Technol & Serv, NL-5830 AC Boxmeer, Netherlands.
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- Ågren, Jon (författare)
- Uppsala universitet,Växtekologi och evolution
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- Coupland, George (författare)
- Max Planck Inst Plant Breeding Res, D-50829 Cologne, Germany.
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- Slotte, Tanja (författare)
- Stockholms universitet,Institutionen för ekologi, miljö och botanik,Science for Life Laboratory (SciLifeLab),Stockholm Univ, Sci Life Lab, Dept Ecol Environm & Plant Sci, SE-10691 Stockholm, Sweden.
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(creator_code:org_t)
- 2018-01-04
- 2018
- Engelska.
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Ingår i: Proceedings of the National Academy of Sciences of the United States of America. - : Proceedings of the National Academy of Sciences. - 0027-8424 .- 1091-6490. ; 115:4, s. 816-821
- Relaterad länk:
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https://www.pnas.org...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Plant mating systems have profound effects on levels and structuring of genetic variation and can affect the impact of natural selection. Although theory predicts that intermediate outcrossing rates may allow plants to prevent accumulation of deleterious alleles, few studies have empirically tested this prediction using genomic data. Here, we study the effect of mating system on purifying selection by conducting population-genomic analyses on whole-genome resequencing data from 38 European individuals of the arctic-alpine crucifer Arabis alpina. We find that outcrossing and mixed-mating populations maintain genetic diversity at similar levels, whereas highly self-fertilizing Scandinavian A. alpina show a strong reduction in genetic diversity, most likely as a result of a postglacial colonization bottleneck. We further find evidence for accumulation of genetic load in highly self-fertilizing populations, whereas the genome-wide impact of purifying selection does not differ greatly between mixed-mating and outcrossing populations. Our results demonstrate that intermediate levels of outcrossing may allow efficient selection against harmful alleles, whereas demographic effects can be important for relaxed purifying selection in highly selfing populations. Thus, mating system and demography shape the impact of purifying selection on genomic variation in A. alpina. These results are important for an improved understanding of the evolutionary consequences of mating system variation and the maintenance of mixed-mating strategies.
Ämnesord
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
Nyckelord
- self-fertilization
- demographic history
- bottleneck
- fitness effects
- genetic load
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Laenen, Benjamin
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Tedder, Andrew
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Nowak, Michael D ...
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Toräng, Per
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Wunder, Jörg
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Wötzel, Stefan
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visa fler...
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Steige, Kim A.
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Kourmpetis, Yian ...
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Odong, Thomas
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Drouzas, Andreas ...
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Bink, Marco C. A ...
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Ågren, Jon
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Coupland, George
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Slotte, Tanja
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Stockholms universitet
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