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Shaw, A. Jonathan; Piatkowski, Bryan; Duffy, Aaron M.; Aguero, Blanka; Imwattana, Karn; Nieto‐Lugilde, Marta; Healey, Adam; Weston, David J.; Patel, Megan N.; Schmutz, Jeremy; Grimwood, Jane; Yavitt, Joseph B.; Hassel, Kristian; Stenøien, Hans K.; Flatberg, Kjell‐Ivar; Bickford, Christopher P.; Hicks, Karen A.

Phylogenomic structure and speciation in an emerging model: the Sphagnum magellanicum complex (Bryophyta)

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  • Medientyp: E-Artikel
  • Titel: Phylogenomic structure and speciation in an emerging model: the Sphagnum magellanicum complex (Bryophyta)
  • Beteiligte: Shaw, A. Jonathan; Piatkowski, Bryan; Duffy, Aaron M.; Aguero, Blanka; Imwattana, Karn; Nieto‐Lugilde, Marta; Healey, Adam; Weston, David J.; Patel, Megan N.; Schmutz, Jeremy; Grimwood, Jane; Yavitt, Joseph B.; Hassel, Kristian; Stenøien, Hans K.; Flatberg, Kjell‐Ivar; Bickford, Christopher P.; Hicks, Karen A.
  • Erschienen: Wiley, 2022
  • Erschienen in: New Phytologist
  • Sprache: Englisch
  • DOI: 10.1111/nph.18429
  • ISSN: 0028-646X; 1469-8137
  • Entstehung:
  • Anmerkungen:
  • Beschreibung: <jats:title>Summary</jats:title><jats:p> <jats:list list-type="bullet"> <jats:list-item><jats:p><jats:italic>Sphagnum magellanicum</jats:italic> is one of two <jats:italic>Sphagnum</jats:italic> species for which a reference‐quality genome exists to facilitate research in ecological genomics.</jats:p></jats:list-item> <jats:list-item><jats:p>Phylogenetic and comparative genomic analyses were conducted based on resequencing data from 48 samples and RADseq analyses based on 187 samples.</jats:p></jats:list-item> <jats:list-item><jats:p>We report herein that there are four clades/species within the <jats:italic>S. magellanicum</jats:italic> complex in eastern North America and that the reference genome belongs to <jats:italic>Sphagnum divinum</jats:italic>. The species exhibit tens of thousands (RADseq) to millions (resequencing) of fixed nucleotide differences. Two species, however, referred to informally as S. diabolicum and S. magni because they have not been formally described, are differentiated by only 100 (RADseq) to 1000 (resequencing) of differences. Introgression among species in the complex is demonstrated using <jats:italic>D</jats:italic>‐statistics and <jats:italic>f</jats:italic><jats:sub>4</jats:sub> ratios. One ecologically important functional trait, tissue decomposability, which underlies peat (carbon) accumulation, does not differ between segregates in the <jats:italic>S. magellanicum</jats:italic> complex, although previous research showed that many closely related <jats:italic>Sphagnum</jats:italic> species have evolved differences in decomposability/carbon sequestration.</jats:p></jats:list-item> <jats:list-item><jats:p>Phylogenetic resolution and more accurate species delimitation in the <jats:italic>S. magellanicum</jats:italic> complex substantially increase the value of this group for studying the early evolutionary stages of climate adaptation and ecological evolution more broadly.</jats:p></jats:list-item> </jats:list> </jats:p>
  • Zugangsstatus: Freier Zugang