Mycena mushrooms exhibit extensive genomic expansion, encompassing not only the genes facilitating plant invasion, carbon breakdown, and interaction, but also those with yet unknown but likely significant functions. Credit: Arne Aronsen and Christoffer Harder
Mycenas are also bioluminescent – i.e. they glow in the dark – and earlier work describing the genomes of five Mycena species had investigated this phenomenon. To learn more about their direct lifestyle habits, the researchers now wanted to study a broad palette of Mycena species with different preferences for substrates.In the new study, they generated new genome sequences for 24 additional.
The researchers were particularly surprised to find that the genomes of the Arctic species expanded significantly beyond the generalfungi had acquired genes from Ascomycetes through horizontal gene transfer. These species are also found in temperate regions, but it remains unclear whether their large size is due to specific species characteristics or an effect related to the Arctic environment.
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