Research Keyword: antagonistic interactions

Strain and contact-dependent metabolomic reprogramming reveals distinct interaction strategies between Laccaria bicolor and Trichoderma

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This research explores how two types of soil fungi interact with each other through chemical signals. When Trichoderma (a beneficial biocontrol fungus) encounters Laccaria bicolor (a helpful fungus that aids plant growth), they communicate through airborne volatile compounds and secreted chemicals. The study found that these fungi employ different strategies depending on how close they are to each other, changing their chemical production to either compete or coexist, which has implications for improving agricultural biocontrol applications.

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Genetic Characterisation of the Bacterial Microbiota Associating With a Strain of Epichloë Fungal Endophyte of Perennial Ryegrass and the Interaction With Its Paenibacillus Members

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Researchers discovered that fungal endophytes living inside perennial ryegrass plants host communities of bacteria, primarily from the Paenibacillus genus. Two specific bacterial strains were isolated and found to interact antagonistically, with one strain acting as a ‘keystone’ species that controls the composition of the entire bacterial community. Despite these complex bacterial interactions, the bacteria did not negatively affect the fungal endophyte’s growth, suggesting a balanced symbiotic relationship beneficial to the grass plant.

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Colletotrichum scovillei and Prospective Biocontrol Agents Isolated from Asymptomatic Olive Trees

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Researchers discovered that olive trees in Greece naturally harbor several species of fungi, including a newly identified disease-causing fungus called Colletotrichum scovillei. More importantly, they found that other fungi living harmlessly inside the olive tissue can protect the plant by fighting against the harmful fungi. Two of these protective fungi, KORD1f and KORD4f, reduced olive anthracnose disease symptoms by 67-73%, suggesting they could be used as natural alternatives to chemical fungicides for olive disease management.

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Establishing microbial communities to promote the growth of Pleurotus ostreatus through a top-down approach is hindered by the dominance of antagonistic interactions

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Researchers studied how to improve oyster mushroom growth by adding helpful bacteria to the growing substrate. They found that most bacteria actually compete with the mushrooms and slow their growth, making it difficult to create beneficial microbial communities using standard enrichment methods. Only one type of bacterium (Brevundimonas) showed neutral interaction with the mushrooms, while several others actively inhibited growth. The study suggests that future approaches should integrate the mushroom into the enrichment process from the beginning rather than trying to add pre-selected microbial communities afterward.

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