Chemical properties of key metabolites determine the global distribution of lichens.

Autor: Schweiger AH; Department of Plant Ecology, Institute of Landscape and Plant Ecology, University of Hohenheim, Stuttgart, Germany., Ullmann GM; Computational Biochemistry, University of Bayreuth, Bayreuth, Germany., Nürk NM; Plant Systematics, University of Bayreuth, Bayreuth, Germany., Triebel D; SNSB IT Center and Botanische Staatssammlung München (SNSB-BSM), München, Germany., Schobert R; Organic Chemistry I, University of Bayreuth, Bayreuth, Germany., Rambold G; Department of Mycology, University of Bayreuth, Bayreuth, Germany.
Jazyk: angličtina
Zdroj: Ecology letters [Ecol Lett] 2022 Feb; Vol. 25 (2), pp. 416-426. Date of Electronic Publication: 2021 Nov 16.
DOI: 10.1111/ele.13930
Abstrakt: In lichen symbioses, fungal secondary metabolites provide UV protection on which lichen algae such as trebouxiophycean green algae-the most prominent group of photobionts in lichen symbioses-sensitively depend. These metabolites differ in their UV absorbance capability and solvability, and thus vary in their propensity of being leached from the lichen body in humid and warm environments, with still unknown implications for the global distribution of lichens. In this study covering more than 10,000 lichenised fungal species, we show that the occurrence of fungal-derived metabolites in combination with their UV absorbance capability and their probability of being leached in warm and humid environments are important eco-evolutionary drivers of global lichen distribution. Fungal-derived UV protection seems to represent an indirect environmental adaptation in which the lichen fungus invests to protect the trebouxiophycean photobiont from high UV radiation in warm and humid climates and, by doing this, secures its carbon source.
(© 2021 The Authors. Ecology Letters published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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