High levels of endemism and local differentiation in the fungal and algal symbionts of saxicolous lecideoid lichens along a latitudinal gradient in southern South America
Abstract Saxicolous, lecideoid lichenized fungi have a cosmopolitan distribution but, being mostly cold adapted, are especially abundant in polar and high-mountain regions. To date, little is known of their origin or the extent of their trans-equatorial dispersal. Several mycobiont genera and specie...
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crcambridgeupr:10.1017/s0024282920000225 2024-06-16T07:34:35+00:00 High levels of endemism and local differentiation in the fungal and algal symbionts of saxicolous lecideoid lichens along a latitudinal gradient in southern South America Ruprecht, Ulrike Fernández-Mendoza, Fernando Türk, Roman Fryday, Alan M. 2020 http://dx.doi.org/10.1017/s0024282920000225 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0024282920000225 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ The Lichenologist volume 52, issue 4, page 287-303 ISSN 0024-2829 1096-1135 journal-article 2020 crcambridgeupr https://doi.org/10.1017/s0024282920000225 2024-05-22T12:55:46Z Abstract Saxicolous, lecideoid lichenized fungi have a cosmopolitan distribution but, being mostly cold adapted, are especially abundant in polar and high-mountain regions. To date, little is known of their origin or the extent of their trans-equatorial dispersal. Several mycobiont genera and species are thought to be restricted to either the Northern or the Southern Hemisphere, whereas others are thought to be widely distributed and occur in both hemispheres. However, these assumptions often rely on morphological analyses and lack supporting molecular genetic data. Also unknown is the extent of regional differentiation in the southern polar regions. An extensive set of lecideoid lichens (185 samples) was collected along a latitudinal gradient at the southern end of South America. Subantarctic climate conditions were maintained by increasing the elevation of the collecting sites with decreasing latitude. The investigated specimens were placed in a global context by including Antarctic and cosmopolitan sequences from other studies. For each symbiont three markers were used to identify intraspecific variation (mycobiont: ITS, mtSSU, RPB1 photobiont: ITS, psbJ-L, COX2). For the mycobiont, the saxicolous genera Lecidea , Porpidia , Poeltidea and Lecidella were phylogenetically re-evaluated, along with their photobionts Asterochloris and Trebouxia . For several globally distributed species groups, the results show geographically highly differentiated subclades, classified as operational taxonomical units (OTUs), which were assigned to the different regions of southern South America (sSA). Furthermore, several small endemic and well-supported clades apparently restricted to sSA were detected at the species level for both symbionts. Article in Journal/Newspaper Antarc* Antarctic Cambridge University Press Antarctic The Lichenologist 52 4 287 303 |
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Open Polar |
collection |
Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract Saxicolous, lecideoid lichenized fungi have a cosmopolitan distribution but, being mostly cold adapted, are especially abundant in polar and high-mountain regions. To date, little is known of their origin or the extent of their trans-equatorial dispersal. Several mycobiont genera and species are thought to be restricted to either the Northern or the Southern Hemisphere, whereas others are thought to be widely distributed and occur in both hemispheres. However, these assumptions often rely on morphological analyses and lack supporting molecular genetic data. Also unknown is the extent of regional differentiation in the southern polar regions. An extensive set of lecideoid lichens (185 samples) was collected along a latitudinal gradient at the southern end of South America. Subantarctic climate conditions were maintained by increasing the elevation of the collecting sites with decreasing latitude. The investigated specimens were placed in a global context by including Antarctic and cosmopolitan sequences from other studies. For each symbiont three markers were used to identify intraspecific variation (mycobiont: ITS, mtSSU, RPB1 photobiont: ITS, psbJ-L, COX2). For the mycobiont, the saxicolous genera Lecidea , Porpidia , Poeltidea and Lecidella were phylogenetically re-evaluated, along with their photobionts Asterochloris and Trebouxia . For several globally distributed species groups, the results show geographically highly differentiated subclades, classified as operational taxonomical units (OTUs), which were assigned to the different regions of southern South America (sSA). Furthermore, several small endemic and well-supported clades apparently restricted to sSA were detected at the species level for both symbionts. |
format |
Article in Journal/Newspaper |
author |
Ruprecht, Ulrike Fernández-Mendoza, Fernando Türk, Roman Fryday, Alan M. |
spellingShingle |
Ruprecht, Ulrike Fernández-Mendoza, Fernando Türk, Roman Fryday, Alan M. High levels of endemism and local differentiation in the fungal and algal symbionts of saxicolous lecideoid lichens along a latitudinal gradient in southern South America |
author_facet |
Ruprecht, Ulrike Fernández-Mendoza, Fernando Türk, Roman Fryday, Alan M. |
author_sort |
Ruprecht, Ulrike |
title |
High levels of endemism and local differentiation in the fungal and algal symbionts of saxicolous lecideoid lichens along a latitudinal gradient in southern South America |
title_short |
High levels of endemism and local differentiation in the fungal and algal symbionts of saxicolous lecideoid lichens along a latitudinal gradient in southern South America |
title_full |
High levels of endemism and local differentiation in the fungal and algal symbionts of saxicolous lecideoid lichens along a latitudinal gradient in southern South America |
title_fullStr |
High levels of endemism and local differentiation in the fungal and algal symbionts of saxicolous lecideoid lichens along a latitudinal gradient in southern South America |
title_full_unstemmed |
High levels of endemism and local differentiation in the fungal and algal symbionts of saxicolous lecideoid lichens along a latitudinal gradient in southern South America |
title_sort |
high levels of endemism and local differentiation in the fungal and algal symbionts of saxicolous lecideoid lichens along a latitudinal gradient in southern south america |
publisher |
Cambridge University Press (CUP) |
publishDate |
2020 |
url |
http://dx.doi.org/10.1017/s0024282920000225 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0024282920000225 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
The Lichenologist volume 52, issue 4, page 287-303 ISSN 0024-2829 1096-1135 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/s0024282920000225 |
container_title |
The Lichenologist |
container_volume |
52 |
container_issue |
4 |
container_start_page |
287 |
op_container_end_page |
303 |
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1802009766715719680 |