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Phylogenetic diversity of the lichenized algal genus Trebouxia (Trebouxiophyceae, Chlorophyta): a new lineage and novel insights from fungal-algal association patterns of Icelandic cetrarioid lichens (Parmeliaceae, Ascomycota)

Phylogenetic diversity of the lichenized algal genus Trebouxia (Trebouxiophyceae, Chlorophyta): a new lineage and novel insights from fungal-algal association patterns of Icelandic cetrarioid lichens (Parmeliaceae, Ascomycota)


Title: Phylogenetic diversity of the lichenized algal genus Trebouxia (Trebouxiophyceae, Chlorophyta): a new lineage and novel insights from fungal-algal association patterns of Icelandic cetrarioid lichens (Parmeliaceae, Ascomycota)
Author: Xu, Maonian   orcid.org/0000-0002-4346-8020
De Boer, Hugo
Olafsdottir, Elin Soffia   orcid.org/0000-0001-7305-7129
Omarsdottir, Sesselja   orcid.org/0000-0003-1824-5148
Heiðmarsson, Starri   orcid.org/0000-0003-0329-6882
Date: 2020-07-20
Language: English
University/Institute: Háskóli Íslands
University of Iceland
School: Heilbrigðisvísindasvið (HÍ)
School of Health Sciences (UI)
Department: Lyfjafræðideild (HÍ)
Faculty of Pharmaceutical Sciences (UI)
Series: Botanical Journal of the Linnean Society;
ISSN: 0024-4074
1095-8339 (eISSN)
DOI: 10.1093/botlinnean/boaa050
Subject: Iceland; Lichen; Parmeliaceae; Phylogeny; Symbiosis; Trebouxia; Fléttur (plöntur); Samlífi (líffræði); Lyfjaefnafræði
URI: https://hdl.handle.net/20.500.11815/1918

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Citation:

Maonian Xu, Hugo De Boer, Elin Soffia Olafsdottir, Sesselja Omarsdottir, Starri Heidmarsson, Phylogenetic diversity of the lichenized algal genus Trebouxia (Trebouxiophyceae, Chlorophyta): a new lineage and novel insights from fungal-algal association patterns of Icelandic cetrarioid lichens (Parmeliaceae, Ascomycota), Botanical Journal of the Linnean Society, , boaa050, https://doi.org/10.1093/botlinnean/boaa050

Abstract:

Lichens have high tolerance to harsh environmental conditions, where lichen symbiont interactions (e.g. myco- and photobionts) may play a crucial role. The characterization of fungal-algal association patterns is essential to understand their symbiotic interactions. This study investigated fungal-algal association patterns in Icelandic cetrarioid lichens using a multi-locus phylogenetic framework, including fungal nrITS, MCM7, mtSSU, RPB1 and RPB2 and algal nrITS, nrLSU, rbcL and mtCOXII data. Most Icelandic cetrarioid lichenized fungi were found to be specifically associated to the known Trebouxia clade “S” (Trebouxia simplex/suecica group), whereas the lichen-forming fungus Cetrariella delisei forms a symbiosis with a previously unrecognized lineage of Trebouxia, provisionally named as the “D” clade. This new Trebouxia lineage is supported by maximum likelihood and Bayesian phylogenetic analyses using all four included algal loci.

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This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited

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