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Photobiont switching causes changes in the reproduction strategy and phenotypic dimorphism in the Arthoniomycetes

Ertz, Damien and Guzow-Krzemińska, Beata and Thor, Göran and Łubek, Anna and Kukwa, Martin (2018). Photobiont switching causes changes in the reproduction strategy and phenotypic dimorphism in the Arthoniomycetes. Scientific Reports. 8, 1-14
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Abstract

Phylogenetic analyses using mtSSU and nuITS sequences of Buellia violaceofusca (previously placed in Lecanoromycetes), a sterile, sorediate lichen having a trebouxioid photobiont, surprisingly prove that the species is conspecific with Lecanographa amylacea (Arthoniomycetes), a fertile, esorediate species with a trentepohlioid photobiont. These results suggest that L. amylacea and B. violaceofusca are photomorphs of the same mycobiont species, which, depending on the photobiont type, changes the morphology and the reproduction strategy. This is the first example of a lichenized fungus that can select between Trebouxia (Trebouxiophyceae) and trentepohlioid (Ulvophyceae) photobionts. Trebouxia photobionts from the sorediate morphotype belong to at least three different phylogenetic clades, and the results suggest that Lecanographa amylacea can capture the photobiont of other lichens such as Chrysothrix candelaris to form the sorediate morphotype. Phylogenetic analyses based on rbcL DNA data suggest that the trentepohlioid photobiont of L. amylacea is closely related to Trentepohlia isolated from fruticose lichens. The flexibility in the photobiont choice enables L. amylacea to use a larger range of tree hosts. This strategy helps the lichen to withstand changes of environmental conditions, to widen its distribution range and to increase its population size, which is particularly important for the survival of this rare species.

Authors/Creators:Ertz, Damien and Guzow-Krzemińska, Beata and Thor, Göran and Łubek, Anna and Kukwa, Martin
Title:Photobiont switching causes changes in the reproduction strategy and phenotypic dimorphism in the Arthoniomycetes
Series/Journal:Scientific Reports (2045-2322)
Year of publishing :2018
Volume:8
Page range:1-14
Number of Pages:14
Publisher:Nature research
ISSN:2045-2322
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Microbiology (Microbiology in the medical area to be 30109)
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Agrovoc terms:photosynthesis, lichenes, symbiosis
Keywords:photobionts, lichens, mycobionts
URN:NBN:urn:nbn:se:slu:epsilon-e-4872
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-4872
ID Code:15424
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
Deposited By: SLUpub Connector
Deposited On:08 May 2018 09:15
Metadata Last Modified:08 May 2018 09:15

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