Fungal Community Shifts in Structure and Function across a Boreal Forest Fire Chronosequence

Applied and Environmental Microbiology
Hui SunJussi Heinonsalo

Abstract

Forest fires are a common natural disturbance in forested ecosystems and have a large impact on the microbial communities in forest soils. The response of soil fungal communities to forest fire is poorly documented. Here, we investigated fungal community structure and function across a 152-year boreal forest fire chronosequence using high-throughput sequencing of the internal transcribed spacer 2 (ITS2) region and a functional gene array (GeoChip). Our results demonstrate that the boreal forest soil fungal community was most diverse soon after a fire disturbance and declined over time. The differences in the fungal communities were explained by changes in the abundance of basidiomycetes and ascomycetes. Ectomycorrhizal (ECM) fungi contributed to the increase in basidiomycete abundance over time, with the operational taxonomic units (OTUs) representing the genera Cortinarius and Piloderma dominating in abundance. Hierarchical cluster analysis by using gene signal intensity revealed that the sites with different fire histories formed separate clusters, suggesting differences in the potential to maintain essential biogeochemical soil processes. The site with the greatest biological diversity had also the most diverse genes. The ge...Continue Reading

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Citations

Aug 16, 2016·FEMS Microbiology Ecology·Minna SantalahtiJussi Heinonsalo
Mar 31, 2017·PloS One·Marjo PalviainenKajar Köster
Mar 2, 2018·The New Phytologist·Outi-Maaria SietiöJussi Heinonsalo
May 29, 2018·Molecular Ecology·Eduardo Pérez-ValeraMarta Goberna
Oct 3, 2018·Molecular Ecology·Kristina SchröterAndrea Polle
Apr 14, 2019·Applied and Environmental Microbiology·Lingling ShiRhett D Harrison
Jul 4, 2019·Microbial Ecology·Erinne StirlingTimothy R Cavagnaro
Jun 6, 2020·Molecular Ecology·Leticia Pérez-IzquierdoAna Rincón
Oct 6, 2019·Nature Reviews. Microbiology·Janet K Jansson, Kirsten S Hofmockel
Oct 24, 2021·Molecular Ecology·Elle J BowdDavid B Lindenmayer

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