Incongruence among morphological species circumscriptions and two molecular datasets in Sarmentypnum (Bryophyta: Calliergonaceae)
Abstract Relationships among species in Sarmentypnum , and Warnstorfia , are investigated based on the nuclear ITS and the chloroplast markers trnL–trnF, rpl16 , and tRNA–Gly of up to 237 specimens. Six specimens in which morphology agrees with ITS sequences have chloroplast markers belonging to oth...
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crwiley:10.1002/tax.606005 2024-06-02T08:02:34+00:00 Incongruence among morphological species circumscriptions and two molecular datasets in Sarmentypnum (Bryophyta: Calliergonaceae) Hedenäs, Lars 2011 http://dx.doi.org/10.1002/tax.606005 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Ftax.606005 https://onlinelibrary.wiley.com/doi/pdf/10.1002/tax.606005 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor TAXON volume 60, issue 6, page 1596-1606 ISSN 0040-0262 1996-8175 journal-article 2011 crwiley https://doi.org/10.1002/tax.606005 2024-05-03T11:07:10Z Abstract Relationships among species in Sarmentypnum , and Warnstorfia , are investigated based on the nuclear ITS and the chloroplast markers trnL–trnF, rpl16 , and tRNA–Gly of up to 237 specimens. Six specimens in which morphology agrees with ITS sequences have chloroplast markers belonging to other species, whereas in two specimens morphology agrees with the chloroplast markers but have ITS sequences belonging to other species. Although hybridization has been recorded in Sarmentypnum , such incongruence could also be a result of other processes, including rapid morphological differentiation and incomplete lineage sorting. ITS and the chloroplast markers partly agree with the morphological species, although some of the latter appear to be polyphyletic or paraphyletic. Sarmentypnum exannulatum consists of two to three haplotype groups that are connected to S. sarmentosum , but not with each other. Sarmentypnum sarmentosum haplotypes are connected with haplotypes of most other species and may have played a central role in the genus' diversification. The trnL–trnF spacer inversion shows patterns congruent with other chloroplast information; it is therefore clearly informative. The incongruence among mainly non–coding molecular datasets and partial disagreement with morphological species could possibly be attributable to the special history of the boreal to arctic environments where Sarmentypnum is predominantly found. The species must be young in terms of number of generations and have experienced large–scale climatic oscillations during the Pleistocene. Incomplete lineage sorting in combination with rapid morphological evolution that is not reflected in the non–coding markers and an unknown frequency of hybridization most likely explains the observed incongruence. Article in Journal/Newspaper Arctic Wiley Online Library Arctic TAXON 60 6 1596 1606 |
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Abstract Relationships among species in Sarmentypnum , and Warnstorfia , are investigated based on the nuclear ITS and the chloroplast markers trnL–trnF, rpl16 , and tRNA–Gly of up to 237 specimens. Six specimens in which morphology agrees with ITS sequences have chloroplast markers belonging to other species, whereas in two specimens morphology agrees with the chloroplast markers but have ITS sequences belonging to other species. Although hybridization has been recorded in Sarmentypnum , such incongruence could also be a result of other processes, including rapid morphological differentiation and incomplete lineage sorting. ITS and the chloroplast markers partly agree with the morphological species, although some of the latter appear to be polyphyletic or paraphyletic. Sarmentypnum exannulatum consists of two to three haplotype groups that are connected to S. sarmentosum , but not with each other. Sarmentypnum sarmentosum haplotypes are connected with haplotypes of most other species and may have played a central role in the genus' diversification. The trnL–trnF spacer inversion shows patterns congruent with other chloroplast information; it is therefore clearly informative. The incongruence among mainly non–coding molecular datasets and partial disagreement with morphological species could possibly be attributable to the special history of the boreal to arctic environments where Sarmentypnum is predominantly found. The species must be young in terms of number of generations and have experienced large–scale climatic oscillations during the Pleistocene. Incomplete lineage sorting in combination with rapid morphological evolution that is not reflected in the non–coding markers and an unknown frequency of hybridization most likely explains the observed incongruence. |
format |
Article in Journal/Newspaper |
author |
Hedenäs, Lars |
spellingShingle |
Hedenäs, Lars Incongruence among morphological species circumscriptions and two molecular datasets in Sarmentypnum (Bryophyta: Calliergonaceae) |
author_facet |
Hedenäs, Lars |
author_sort |
Hedenäs, Lars |
title |
Incongruence among morphological species circumscriptions and two molecular datasets in Sarmentypnum (Bryophyta: Calliergonaceae) |
title_short |
Incongruence among morphological species circumscriptions and two molecular datasets in Sarmentypnum (Bryophyta: Calliergonaceae) |
title_full |
Incongruence among morphological species circumscriptions and two molecular datasets in Sarmentypnum (Bryophyta: Calliergonaceae) |
title_fullStr |
Incongruence among morphological species circumscriptions and two molecular datasets in Sarmentypnum (Bryophyta: Calliergonaceae) |
title_full_unstemmed |
Incongruence among morphological species circumscriptions and two molecular datasets in Sarmentypnum (Bryophyta: Calliergonaceae) |
title_sort |
incongruence among morphological species circumscriptions and two molecular datasets in sarmentypnum (bryophyta: calliergonaceae) |
publisher |
Wiley |
publishDate |
2011 |
url |
http://dx.doi.org/10.1002/tax.606005 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Ftax.606005 https://onlinelibrary.wiley.com/doi/pdf/10.1002/tax.606005 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
TAXON volume 60, issue 6, page 1596-1606 ISSN 0040-0262 1996-8175 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/tax.606005 |
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60 |
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1596 |
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1800747047545995264 |