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Basidiomycete yeasts in the cortex of ascomycete macrolichens
Graz Univ, Inst Plant Sci, NAWI Graz, A-8010 Graz, Austria.;Univ Montana, Div Biol Sci, Missoula, MT 59812 USA..
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organismal Biology, Systematic Biology. Swedish Univ Agr Sci, Dept Ecol, POB 7044, SE-75007 Uppsala, Sweden..
Graz Univ, Inst Plant Sci, NAWI Graz, A-8010 Graz, Austria..
Univ Montana, Div Biol Sci, Missoula, MT 59812 USA..
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2016 (English)In: Science, ISSN 0036-8075, E-ISSN 1095-9203, Vol. 353, no 6298, 488-492 p.Article in journal (Refereed) Published
Abstract [en]

For over 140 years, lichens have been regarded as a symbiosis between a single fungus, usually an ascomycete, and a photosynthesizing partner. Other fungi have long been known to occur as occasional parasites or endophytes, but the one lichen-one fungus paradigm has seldom been questioned. Here we show that many common lichens are composed of the known ascomycete, the photosynthesizing partner, and, unexpectedly, specific basidiomycete yeasts. These yeasts are embedded in the cortex, and their abundance correlates with previously unexplained variations in phenotype. Basidiomycete lineages maintain close associations with specific lichen species over large geographical distances and have been found on six continents. The structurally important lichen cortex, long treated as a zone of differentiated ascomycete cells, appears to consistently contain two unrelated fungi.

Place, publisher, year, edition, pages
2016. Vol. 353, no 6298, 488-492 p.
National Category
Biological Sciences
URN: urn:nbn:se:uu:diva-302699DOI: 10.1126/science.aaf8287ISI: 000380583600041PubMedID: 27445309OAI: oai:DiVA.org:uu-302699DiVA: diva2:970640
Available from: 2016-09-14 Created: 2016-09-08 Last updated: 2016-09-14Bibliographically approved

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Tuovinen, VeeraJohannesson, Hanna
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