Wood decay fungi and their bacterial interaction partners in the built environment e A systematic review on fungal bacteria interactions in dead wood and timber

Microbial biodeterioration of timber and woody material in buildings can cause costly restoration procedures. Here, we focus on Serpula lacrymans (commonly known as dry -rot) the fungus causing the most severe damages to buildings in Europe. Although its morphology, lifestyle, and dispersal have been intensively studied, research on microor-ganisms sharing the same habitat and interacting with the dry-rot fungus is not as compre-hensive. Bacteria have long been known to inhabit dead wood, and several studies have shown their association to fungi. However, their identity, ecology, and putative interac-tions with co-existing fungi in dead wood remains largely underexplored. The interactions of bacterial and fungi have considerable impact on all partners involved covering the full spectrum between antagonistic and beneficial. Fungi are highly capable of manipulating the microbial community in their surroundings (e.g. via pH manipulation) and bacteria, in turn, can influence fungi by affecting the outcomes of (antagonistic) interactions or pre-venting fungal feedback inhibition via consumption of breakdown products. Associated bacteria on the other side could play an essential role for the fungus as bacteria can exert significant influence on fungal physiology and behaviour. This minireview summarizes the current knowledge on bacterial-fungal interactions in dead wood with a special focus on dry-rot and proposes possible bacterial-fungal interaction (BFI) mechanisms based on ex-amples from soil or decomposing wood from forests.(c) 2022 The Authors. Published by Elsevier Ltd on behalf of British Mycological Society. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/ 4.0/).

Automated summary

Microbial biodeterioration of timber and woody material in buildings can lead to costly restoration procedures, with the fungus Serpula lacrymans causing the most severe damages in Europe. Research on microorganisms inhabiting the same habitat and interacting with the dry-rot fungus is not comprehensive. Bacterial-fungal interactions in dead wood have significant impacts on the partners involved, ranging from antagonistic to beneficial.