Metabolic re-programming in confrontations of Colletotrichum graminicola and Aspergillus nidulans with Bacillus biocontrol agents

• DOI: 10.1007/s41348-024-00905-1
• Publication Date: 2024-04-05T21:01:20Z
• Authors: Bennet Rohan Fern...; Diana Astrid Barr...; Henriette Uthe; Yvonne Pöschl-Grau; Timo H. J. Nieder...; Holger B. Deising
• Keywords: Aspergillus nidulans; Graminicola; Colletotrichum

Abstract We established confrontations between two different fungi, i.e., the maize anthracnose and stalk rot pathogen Colletotrichum graminicola , ubiquitous fungus Aspergillus nidulans biocontrol species, Bacillus subtilis velezensis amyloliquefaciens . In all fungus–bacterium tested, growth arrest and, thus, distance inhibition was observed on solid substrata. LC–MS/MS analyses of culture filtrates suggested formation several metabolites only synthesized in confrontations. Interestingly, microscopy fungal hyphae grown liquid medium showed protrusions color changes occurred media harboring fungus-bacterium These observations indicate metabolic re-programming suggest putative secondary interactions involving microbial agents.