Friend or foe fungi share the same genetic playbook
St Leger RJ, Sheng H, Hafer AX
Soil Health
The Trichoderma powder you sprinkle on seedlings to fight root rot and the Metarhizium spray used against garden grubs are shape-shifters, built from nearly the same genetic parts as the Fusarium wilt that can kill your tomatoes.
Scientists compared three groups of fungi that gardeners run into constantly: Fusarium (a common plant disease), Metarhizium (a natural insect killer), and Trichoderma (a popular biological fungicide). Even though these fungi seem to do totally different jobs, they turn out to be close relatives carrying almost the same set of genes, and each one can slide between helping plants, harming them, or just living quietly inside them depending on the environment. Understanding this shared toolkit could lead to better, more predictable biological pest and disease control products for gardens and farms.
Key Findings
Fusarium, Metarhizium, and Trichoderma share a common hypocrealean ancestry and largely overlapping 'toolkit' genes despite very different ecological roles (plant pathogen, insect pathogen, mycoparasite).
All three genera have 'two-speed genomes': stable core chromosomes plus flexible accessory regions packed with genes for host interaction and chemical production, which drives their ecological flexibility.
Generalist fungal lineages tend to reproduce clonally while specialist lineages retain sexual reproduction, and each genus favors a distinct niche: Trichoderma in stable soils, Fusarium in disturbed habitats, Metarhizium bridging soil, plants, and insects.
chevron_right Technical Summary
Three familiar fungi groups, one that attacks plants, one that kills insects, and one that fights other fungi, turn out to share the same genetic toolkit and can switch roles depending on conditions. The finding helps explain why fungal biocontrol products sometimes behave unpredictably and how these organisms might be engineered more precisely for farming and gardening.
Abstract Preview
Original paper
Lifestyle plasticity and the shared hypocrealean toolkit across Fusarium, Metarhizium, and Trichoderma.
SUMMARYFungi in the genera Fusarium, Metarhizium, and Trichoderma (FMT) are traditionally defined by their roles as plant pathogens, insect pathogens, and mycoparasites, respectively. However, thes...
open_in_new Read full abstractAbstract copyright held by the original publisher.
Was this useful?
Want to tell us more? (optional)
Thanks for the note!
Something went wrong — please try again.
Too many submissions. Try again in an hour.
Gene editing removes 97% of celiac-triggering proteins from bread wheat
It could mean that people with celiac disease — roughly 1 in 100 worldwide — may one day safely eat bread made from real wheat, without sacrificing the taste...
Crop-improvement refers to the systematic enhancement of plant varieties through selective breeding, genetic modification, and biotechnological approaches to develop cultivars with superior agronomic, nutritional, or environmental traits. This field is essential for addressing global food security,
arrow_forward Explore topic