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Origins, genetic structure, and systematics of the narrow endemic peatmosses (Sphagnum): S. guwassanense and S. triseriporum (Sphagnaceae).

Publication ,  Journal Article
Shaw, AJ; Shaw, B; Johnson, MG; Higuchi, M; Arikawa, T; Ueno, T; Devos, N
Published in: American journal of botany
June 2013

Sphagnum dominates vast expanses of wetland habitats throughout the northern hemisphere and species delimitation within the genus is important because floristic changes associated with a warming global climate may have measureable impacts on large-scale ecological processes. Most northern hemisphere peatmoss species (Sphagnum) have circumboreal ranges, but the Japanese species generally known as S. calymmatophyllum is endemic to Honshu Island. This prompted a population genetic and phylogenetic analysis to resolve the origin(s), population structure, and phylogenetic relationships of this morphologically variable species. •Sixty plants collected from Mt. Gassan and Mt. Hakkoda were genotyped for 12 microsatellite loci. Two plastid loci and three anonymous nuclear loci were sequenced in a subset of the plants, plus representatives from 10 closely related species. •Gametophytes exhibited fixed or nearly fixed heterozygosity at 9-10 of the 12 microsatellite loci. Two genetic groups were resolved by the microsatellite data, individuals showed no evidence of admixture, and the two groups of plants differ in morphology. They are heterozygous for different sets of alleles. The two taxa share plastid DNA sequences with two species that are common in Alaska. •Two taxa were distinguished: S. guwassanense and S. triseriporum. Both are allopolyploids; they originated independently from different but closely related progenitors. The maternal progenitor was likely either S. orientale or S. inexspectatum. The two allopolyploid taxa are heterozygous for (different) private microsatellite alleles, and one progenitor could be extinct.

Duke Scholars

Published In

American journal of botany

DOI

EISSN

1537-2197

ISSN

1537-2197

Publication Date

June 2013

Volume

100

Issue

6

Start / End Page

1202 / 1220

Related Subject Headings

  • Sphagnopsida
  • Phylogeny
  • Microsatellite Repeats
  • Genotype
  • Evolutionary Biology
  • DNA, Plant
  • Alleles
  • 3108 Plant biology
  • 3104 Evolutionary biology
  • 3103 Ecology
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Shaw, A. J., Shaw, B., Johnson, M. G., Higuchi, M., Arikawa, T., Ueno, T., & Devos, N. (2013). Origins, genetic structure, and systematics of the narrow endemic peatmosses (Sphagnum): S. guwassanense and S. triseriporum (Sphagnaceae). American Journal of Botany, 100(6), 1202–1220. https://doi.org/10.3732/ajb.1200630
Shaw, A Jonathan, Blanka Shaw, Matthew G. Johnson, Masanobu Higuchi, Tomotsugu Arikawa, Takeshi Ueno, and Nicolas Devos. “Origins, genetic structure, and systematics of the narrow endemic peatmosses (Sphagnum): S. guwassanense and S. triseriporum (Sphagnaceae).American Journal of Botany 100, no. 6 (June 2013): 1202–20. https://doi.org/10.3732/ajb.1200630.
Shaw AJ, Shaw B, Johnson MG, Higuchi M, Arikawa T, Ueno T, et al. Origins, genetic structure, and systematics of the narrow endemic peatmosses (Sphagnum): S. guwassanense and S. triseriporum (Sphagnaceae). American journal of botany. 2013 Jun;100(6):1202–20.
Shaw, A. Jonathan, et al. “Origins, genetic structure, and systematics of the narrow endemic peatmosses (Sphagnum): S. guwassanense and S. triseriporum (Sphagnaceae).American Journal of Botany, vol. 100, no. 6, June 2013, pp. 1202–20. Epmc, doi:10.3732/ajb.1200630.
Shaw AJ, Shaw B, Johnson MG, Higuchi M, Arikawa T, Ueno T, Devos N. Origins, genetic structure, and systematics of the narrow endemic peatmosses (Sphagnum): S. guwassanense and S. triseriporum (Sphagnaceae). American journal of botany. 2013 Jun;100(6):1202–1220.

Published In

American journal of botany

DOI

EISSN

1537-2197

ISSN

1537-2197

Publication Date

June 2013

Volume

100

Issue

6

Start / End Page

1202 / 1220

Related Subject Headings

  • Sphagnopsida
  • Phylogeny
  • Microsatellite Repeats
  • Genotype
  • Evolutionary Biology
  • DNA, Plant
  • Alleles
  • 3108 Plant biology
  • 3104 Evolutionary biology
  • 3103 Ecology