Transcriptional response of mushrooms to artificial sun exposure

  • Climate change causes increased tree mortality leading to canopy loss and thus sun-exposed forest floors. Sun exposure creates extreme temperatures and radiation, with potentially more drastic effects on forest organisms than the current increase in mean temperature. Such conditions might potentially negatively affect the maturation of mushrooms of forest fungi. A failure of reaching maturation would mean no sexual spore release and, thus, entail a loss of genetic diversity. However, we currently have a limited understanding of the quality and quantity of mushroom-specific molecular responses caused by sun exposure. Thus, to understand the short-term responses toward enhanced sun exposure, we exposed mushrooms of the wood-inhabiting forest species Lentinula edodes, while still attached to their mycelium and substrate, to artificial solar light (ca. 30°C and 100,000 lux) for 5, 30, and 60 min. We found significant differentially expressed genes at 30 and 60 min. Eukaryotic Orthologous Groups (KOG) class enrichment pointed to defense mechanisms. The 20 most significant differentially expressed genes showed the expression of heat-shock proteins, an important family of proteins under heat stress. Although preliminary, our results suggest mushroom-specific molecular responses to tolerate enhanced sun exposure as expected under climate change. Whether mushroom-specific molecular responses are able to maintain fungal fitness under opening forest canopies remains to be tested.
Author:Franz-Sebastian Krah, Jaqueline Hess, Florian Hennicke, Ritwika Kar, Claus BässlerORCiDGND
Parent Title (English):Ecology and evolution
Publisher:John Wiley & Sons
Place of publication:[S.l.]
Document Type:Article
Date of Publication (online):2021/07/05
Date of first Publication:2021/07/05
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2022/03/16
Tag:climate change; experiment; fungi; heat; heat-shock protein; light; mushroom; sun exposure; transcriptome
Page Number:9
First Page:10538
Last Page:10546
FH gratefully acknowledges funding by the Deutsche Forschungsgemeinschaft (DFG) under grant HE 7849/3-1. Sequencing was financed by the Bavarian Forest National Park.
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie
Licence (German):License LogoCreative Commons - Namensnennung 4.0