Genetic diversity of algal and fungal partners in four species of Umbilicaria (lichenized ascomycetes) along a transect of the Antarctic Peninsula
Lichens from the genus Umbilicaria were collected across a 5,000-km transect through Antarctica and investigated for DNA sequence polymorphism in a region of 480–660 bp of the nuclear internal transcribed spacer region of ribosomal DNA. Sequences from both fungal (16 ascomycetes) and photosynthetic...
Main Authors: | , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Society for Molecular Biology and Evolution
2002
|
Subjects: | |
Online Access: | http://nora.nerc.ac.uk/id/eprint/17415/ http://mbe.oxfordjournals.org/content/19/8/1209.full.pdf |
id |
ftnerc:oai:nora.nerc.ac.uk:17415 |
---|---|
record_format |
openpolar |
spelling |
ftnerc:oai:nora.nerc.ac.uk:17415 2023-05-15T13:45:12+02:00 Genetic diversity of algal and fungal partners in four species of Umbilicaria (lichenized ascomycetes) along a transect of the Antarctic Peninsula Romeike, J. Friedl, T. Helms, G. Ott, Sieglinde 2002 http://nora.nerc.ac.uk/id/eprint/17415/ http://mbe.oxfordjournals.org/content/19/8/1209.full.pdf unknown Society for Molecular Biology and Evolution Romeike, J.; Friedl, T.; Helms, G.; Ott, Sieglinde. 2002 Genetic diversity of algal and fungal partners in four species of Umbilicaria (lichenized ascomycetes) along a transect of the Antarctic Peninsula. Molecular Biology and Evolution, 19 (8). 1209-1217. Botany Publication - Article PeerReviewed 2002 ftnerc 2023-02-04T19:31:05Z Lichens from the genus Umbilicaria were collected across a 5,000-km transect through Antarctica and investigated for DNA sequence polymorphism in a region of 480–660 bp of the nuclear internal transcribed spacer region of ribosomal DNA. Sequences from both fungal (16 ascomycetes) and photosynthetic partners (22 chlorophytes from the genus Trebouxia) were determined and compared with homologs from lichens inhabiting more temperate, continental climates. The phylogenetic analyses reveal that Antarctic lichens have colonized their current habitats both through multiple independent colonization events from temperate embarkation zones and through recent longrange dispersal in the Antarctic of successful preexisting colonizers. Furthermore, the results suggest that relichenization— de novo establishment of the fungus-photosynthesizer symbiosis from nonlichenized algal and fungal cells—has occurred during the process of Antarctic lichen dispersal. Independent dispersal of algal and fungal cultures therefore can lead to a successful establishment of the lichen symbiosis even under harsh Antarctic conidtions. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Natural Environment Research Council: NERC Open Research Archive Antarctic Antarctic Peninsula The Antarctic |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Botany |
spellingShingle |
Botany Romeike, J. Friedl, T. Helms, G. Ott, Sieglinde Genetic diversity of algal and fungal partners in four species of Umbilicaria (lichenized ascomycetes) along a transect of the Antarctic Peninsula |
topic_facet |
Botany |
description |
Lichens from the genus Umbilicaria were collected across a 5,000-km transect through Antarctica and investigated for DNA sequence polymorphism in a region of 480–660 bp of the nuclear internal transcribed spacer region of ribosomal DNA. Sequences from both fungal (16 ascomycetes) and photosynthetic partners (22 chlorophytes from the genus Trebouxia) were determined and compared with homologs from lichens inhabiting more temperate, continental climates. The phylogenetic analyses reveal that Antarctic lichens have colonized their current habitats both through multiple independent colonization events from temperate embarkation zones and through recent longrange dispersal in the Antarctic of successful preexisting colonizers. Furthermore, the results suggest that relichenization— de novo establishment of the fungus-photosynthesizer symbiosis from nonlichenized algal and fungal cells—has occurred during the process of Antarctic lichen dispersal. Independent dispersal of algal and fungal cultures therefore can lead to a successful establishment of the lichen symbiosis even under harsh Antarctic conidtions. |
format |
Article in Journal/Newspaper |
author |
Romeike, J. Friedl, T. Helms, G. Ott, Sieglinde |
author_facet |
Romeike, J. Friedl, T. Helms, G. Ott, Sieglinde |
author_sort |
Romeike, J. |
title |
Genetic diversity of algal and fungal partners in four species of Umbilicaria (lichenized ascomycetes) along a transect of the Antarctic Peninsula |
title_short |
Genetic diversity of algal and fungal partners in four species of Umbilicaria (lichenized ascomycetes) along a transect of the Antarctic Peninsula |
title_full |
Genetic diversity of algal and fungal partners in four species of Umbilicaria (lichenized ascomycetes) along a transect of the Antarctic Peninsula |
title_fullStr |
Genetic diversity of algal and fungal partners in four species of Umbilicaria (lichenized ascomycetes) along a transect of the Antarctic Peninsula |
title_full_unstemmed |
Genetic diversity of algal and fungal partners in four species of Umbilicaria (lichenized ascomycetes) along a transect of the Antarctic Peninsula |
title_sort |
genetic diversity of algal and fungal partners in four species of umbilicaria (lichenized ascomycetes) along a transect of the antarctic peninsula |
publisher |
Society for Molecular Biology and Evolution |
publishDate |
2002 |
url |
http://nora.nerc.ac.uk/id/eprint/17415/ http://mbe.oxfordjournals.org/content/19/8/1209.full.pdf |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica |
op_relation |
Romeike, J.; Friedl, T.; Helms, G.; Ott, Sieglinde. 2002 Genetic diversity of algal and fungal partners in four species of Umbilicaria (lichenized ascomycetes) along a transect of the Antarctic Peninsula. Molecular Biology and Evolution, 19 (8). 1209-1217. |
_version_ |
1766216300927909888 |