Abstract:
:Fungus-growing termites engage in an obligate mutualistic relationship with Termitomyces fungi, which they maintain in monocultures on specialised fungus comb structures, without apparent problems with infectious diseases. While other fungi have been reported in the symbiosis, detailed comb fungal community analyses have been lacking. Here we use culture-dependent and -independent methods to characterise fungus comb mycobiotas from three fungus-growing termite species (two genera). Internal Transcribed Spacer (ITS) gene analyses using 454 pyrosequencing and Illumina MiSeq showed that non-Termitomyces fungi were essentially absent in fungus combs, and that Termitomyces fungal crops are maintained in monocultures as heterokaryons with two or three abundant ITS variants in a single fungal strain. To explore whether the essential absence of other fungi within fungus combs is potentially due to the production of antifungal metabolites by Termitomyces or comb bacteria, we performed in vitro assays and found that both Termitomyces and chemical extracts of fungus comb material can inhibit potential fungal antagonists. Chemical analyses of fungus comb material point to a highly complex metabolome, including compounds with the potential to play roles in mediating these contaminant-free farming conditions in the termite symbiosis.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Otani S,Challinor VL,Kreuzenbeck NB,Kildgaard S,Krath Christensen S,Larsen LLM,Aanen DK,Rasmussen SA,Beemelmanns C,Poulsen Mdoi
10.1038/s41598-019-45364-zsubject
Has Abstractpub_date
2019-06-19 00:00:00pages
8819issue
1issn
2045-2322pii
10.1038/s41598-019-45364-zjournal_volume
9pub_type
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