Dead fungal mycelium in forest soil represents a decomposition hotspot and a habitat for a specific microbial community

The New Phytologist
Vendula BrabcováPetr Baldrian

Abstract

Turnover of fungal biomass in forest litter and soil represents an important process in the environment. To date, knowledge of mycelial decomposition has been derived primarily from short-term studies, and the guild of mycelium decomposers has been poorly defined. Here, we followed the fate of the fruiting bodies of an ectomycorrhizal fungus in litter and soil of a temperate forest over 21 wk. The community of associated microbes and enzymatic processes in this specific substrate were described. The decomposition of fungal fruiting bodies exhibited biphasic kinetics. The rapid initial phase, which included the disappearance of DNA, was followed by a slower turnover of the recalcitrant fraction. Compared with the surrounding litter and soil, the mycelium represented a hotspot of activity of several biopolymer-degrading enzymes and high bacterial biomass. Specific communities of bacteria and fungi were associated with decomposing mycelium. These communities differed between the initial and late phases of decomposition. The bacterial community associated with decomposing mycelia typically contained the genera Pedobacter, Pseudomonas, Variovorax, Chitinophaga, Ewingella and Stenotrophomonas, whereas the fungi were mostly nonbasidio...Continue Reading

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Citations

Aug 26, 2016·FEMS Microbiology Ecology·Sarah R JohnstonAndrew J Weightman
Feb 1, 2018·The ISME Journal·Nanna B SvenningsenIver Jakobsen
Nov 11, 2017·FEMS Microbiology Ecology·Vojtech TláskalPetr Baldrian
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Jan 5, 2019·Ecology Letters·Christopher W FernandezPeter G Kennedy
Nov 11, 2018·Applied and Environmental Microbiology·Lauren S McKeeHarry Brumer
Jan 10, 2019·FEMS Microbiology Ecology·Petr Baldrian
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Nov 20, 2016·FEMS Microbiology Reviews·Petr Baldrian
Sep 20, 2017·Microbiome·Lucia ŽifčákováPetr Baldrian
May 28, 2019·The ISME Journal·Claude HerzogIvano Brunner
Aug 9, 2019·Microbial Ecology·Logan Gray, Gavin Kernaghan
Jun 12, 2020·World Journal of Microbiology & Biotechnology·Sonia SharmaRamandeep Kaur
Feb 6, 2019·The New Phytologist·Bartosz AdamczykJussi Heinonsalo
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Nov 27, 2020·Frontiers in Microbiology·Michaeline B N AlbrightJohn Dunbar
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