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Article

Microbiota Associated with Different Developmental Stages of the Dry Rot Fungus Serpula lacrymans

Department of Microbiology, University of Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria
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Academic Editor: Hector M. Mora-Montes
J. Fungi 2021, 7(5), 354; https://doi.org/10.3390/jof7050354
Received: 30 March 2021 / Revised: 26 April 2021 / Accepted: 27 April 2021 / Published: 30 April 2021
The dry rot fungus Serpula lacrymans causes significant structural damage by decaying construction timber, resulting in costly restoration procedures. Dry rot fungi decompose cellulose and hemicellulose and are often accompanied by a succession of bacteria and other fungi. Bacterial–fungal interactions (BFI) have a considerable impact on all the partners, ranging from antagonistic to beneficial relationships. Using a cultivation-based approach, we show that S. lacrymans has many co-existing, mainly Gram-positive, bacteria and demonstrate differences in the communities associated with distinct fungal parts. Bacteria isolated from the fruiting bodies and mycelia were dominated by Firmicutes, while bacteria isolated from rhizomorphs were dominated by Proteobacteria. Actinobacteria and Bacteroidetes were less abundant. Fluorescence in situ hybridization (FISH) analysis revealed that bacteria were not present biofilm-like, but occurred as independent cells scattered across and within tissues, sometimes also attached to fungal spores. In co-culture, some bacterial isolates caused growth inhibition of S. lacrymans, and vice versa, and some induced fungal pigment production. It was found that 25% of the isolates could degrade pectin, 43% xylan, 17% carboxymethylcellulose, and 66% were able to depolymerize starch. Our results provide first insights for a better understanding of the holobiont S. lacrymans and give hints that bacteria influence the behavior of S. lacrymans in culture. View Full-Text
Keywords: bacterial community; wood-decaying fungi; Serpula lacrymans; microbiota; bacterial–fungal interactions; fungi/bacteria of the built environment bacterial community; wood-decaying fungi; Serpula lacrymans; microbiota; bacterial–fungal interactions; fungi/bacteria of the built environment
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MDPI and ACS Style

Embacher, J.; Neuhauser, S.; Zeilinger, S.; Kirchmair, M. Microbiota Associated with Different Developmental Stages of the Dry Rot Fungus Serpula lacrymans. J. Fungi 2021, 7, 354. https://doi.org/10.3390/jof7050354

AMA Style

Embacher J, Neuhauser S, Zeilinger S, Kirchmair M. Microbiota Associated with Different Developmental Stages of the Dry Rot Fungus Serpula lacrymans. Journal of Fungi. 2021; 7(5):354. https://doi.org/10.3390/jof7050354

Chicago/Turabian Style

Embacher, Julia, Sigrid Neuhauser, Susanne Zeilinger, and Martin Kirchmair. 2021. "Microbiota Associated with Different Developmental Stages of the Dry Rot Fungus Serpula lacrymans" Journal of Fungi 7, no. 5: 354. https://doi.org/10.3390/jof7050354

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