Dispersal in a sterile lichen-forming fungus, Thamnolia subuliformis (Ascomycotina: Icmadophilaceae)This paper is one of a selection of papers published in the Special Issue on Systematics Research.
Thamnolia subuliformis (Ehrh.) Culb. is a sterile lichen-forming ascomycete with no known sexual or vegetative reproductive structures except fragments of thallus branches. The open tundra in northern Manitoba contains fragments of T. subuliformis randomly scattered over the landscape, giving the ap...
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crcansciencepubl:10.1139/b08-032 2024-04-28T08:40:54+00:00 Dispersal in a sterile lichen-forming fungus, Thamnolia subuliformis (Ascomycotina: Icmadophilaceae)This paper is one of a selection of papers published in the Special Issue on Systematics Research. Cassie, David M. Piercey-Normore, Michele D. 2008 http://dx.doi.org/10.1139/b08-032 http://www.nrcresearchpress.com/doi/full-xml/10.1139/B08-032 http://www.nrcresearchpress.com/doi/pdf/10.1139/B08-032 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Botany volume 86, issue 7, page 751-762 ISSN 1916-2790 1916-2804 Plant Science Ecology Ecology, Evolution, Behavior and Systematics journal-article 2008 crcansciencepubl https://doi.org/10.1139/b08-032 2024-04-09T06:56:30Z Thamnolia subuliformis (Ehrh.) Culb. is a sterile lichen-forming ascomycete with no known sexual or vegetative reproductive structures except fragments of thallus branches. The open tundra in northern Manitoba contains fragments of T. subuliformis randomly scattered over the landscape, giving the appearance that dispersal is common. This may provide a misleading impression of gene flow, but similar fragmentation is seen in seven other locally occurring species of lichen-forming fungi. The primary objective of this study was to examine the population structure of T. subuliformis using four multilocus markers (interspersed simple sequence repeats; ISSR) and a single locus marker (the presence/absence of a group I intron in the nuclear 18S rDNA locus). Significant population subdivision is reported for two different classifications of what constitutes a population. Thallus fragments of T. subuliformis may be intact and slow growing, having accumulated tissue over a long period of time, with low levels of gene flow occurring in localized areas. The presence of the group 1 intron in localized transects may suggest either that the intron was introduced recently and has not had sufficient time to disperse among populations, or that it has been lost in other locations. Article in Journal/Newspaper Tundra Canadian Science Publishing Botany 86 7 751 762 |
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Open Polar |
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Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Plant Science Ecology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Plant Science Ecology Ecology, Evolution, Behavior and Systematics Cassie, David M. Piercey-Normore, Michele D. Dispersal in a sterile lichen-forming fungus, Thamnolia subuliformis (Ascomycotina: Icmadophilaceae)This paper is one of a selection of papers published in the Special Issue on Systematics Research. |
topic_facet |
Plant Science Ecology Ecology, Evolution, Behavior and Systematics |
description |
Thamnolia subuliformis (Ehrh.) Culb. is a sterile lichen-forming ascomycete with no known sexual or vegetative reproductive structures except fragments of thallus branches. The open tundra in northern Manitoba contains fragments of T. subuliformis randomly scattered over the landscape, giving the appearance that dispersal is common. This may provide a misleading impression of gene flow, but similar fragmentation is seen in seven other locally occurring species of lichen-forming fungi. The primary objective of this study was to examine the population structure of T. subuliformis using four multilocus markers (interspersed simple sequence repeats; ISSR) and a single locus marker (the presence/absence of a group I intron in the nuclear 18S rDNA locus). Significant population subdivision is reported for two different classifications of what constitutes a population. Thallus fragments of T. subuliformis may be intact and slow growing, having accumulated tissue over a long period of time, with low levels of gene flow occurring in localized areas. The presence of the group 1 intron in localized transects may suggest either that the intron was introduced recently and has not had sufficient time to disperse among populations, or that it has been lost in other locations. |
format |
Article in Journal/Newspaper |
author |
Cassie, David M. Piercey-Normore, Michele D. |
author_facet |
Cassie, David M. Piercey-Normore, Michele D. |
author_sort |
Cassie, David M. |
title |
Dispersal in a sterile lichen-forming fungus, Thamnolia subuliformis (Ascomycotina: Icmadophilaceae)This paper is one of a selection of papers published in the Special Issue on Systematics Research. |
title_short |
Dispersal in a sterile lichen-forming fungus, Thamnolia subuliformis (Ascomycotina: Icmadophilaceae)This paper is one of a selection of papers published in the Special Issue on Systematics Research. |
title_full |
Dispersal in a sterile lichen-forming fungus, Thamnolia subuliformis (Ascomycotina: Icmadophilaceae)This paper is one of a selection of papers published in the Special Issue on Systematics Research. |
title_fullStr |
Dispersal in a sterile lichen-forming fungus, Thamnolia subuliformis (Ascomycotina: Icmadophilaceae)This paper is one of a selection of papers published in the Special Issue on Systematics Research. |
title_full_unstemmed |
Dispersal in a sterile lichen-forming fungus, Thamnolia subuliformis (Ascomycotina: Icmadophilaceae)This paper is one of a selection of papers published in the Special Issue on Systematics Research. |
title_sort |
dispersal in a sterile lichen-forming fungus, thamnolia subuliformis (ascomycotina: icmadophilaceae)this paper is one of a selection of papers published in the special issue on systematics research. |
publisher |
Canadian Science Publishing |
publishDate |
2008 |
url |
http://dx.doi.org/10.1139/b08-032 http://www.nrcresearchpress.com/doi/full-xml/10.1139/B08-032 http://www.nrcresearchpress.com/doi/pdf/10.1139/B08-032 |
genre |
Tundra |
genre_facet |
Tundra |
op_source |
Botany volume 86, issue 7, page 751-762 ISSN 1916-2790 1916-2804 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/b08-032 |
container_title |
Botany |
container_volume |
86 |
container_issue |
7 |
container_start_page |
751 |
op_container_end_page |
762 |
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