Research Keyword: host adaptation

Intraspecies sequence-graph analysis of the Phytophthora theobromicola genome reveals a dynamic structure and variable effector repertoires

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Researchers sequenced the genome of Phytophthora theobromicola, a newly discovered fungal pathogen that causes serious cacao plant disease. They found the pathogen’s genome is highly variable among different isolates and contains many genes that help it attack cacao plants. By studying which of these harmful genes are active during infection, they identified specific virulence factors unique to this cacao pathogen that could be important targets for future disease control strategies.

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Genome assemblies for Pyricularia species and related genera isolated from diverse host plants

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Scientists have sequenced the complete genetic blueprints of 35 fungal strains belonging to Pyricularia species and related genera, which cause devastating blast diseases in crops like rice and wheat. By analyzing genetic differences between strains that infect different grass species, researchers found that most Pyricularia oryzae strains show strong preferences for specific host plants. These new genome resources will help scientists understand how fungal pathogens evolve and adapt to new plant hosts, potentially improving disease management strategies.

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Dermatophytes adaptation to the human host exemplified by Microsporum canis

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Researchers studied how fungi that normally infect cats and dogs are adapting to infect humans. By comparing the genes of zoophilic (animal-loving) and anthropophilic (human-loving) Microsporum species, they found that human-adapted strains have developed specific proteins that help them survive in the acidic environment of human skin. These fungi have evolved special enzymes for breaking down keratin and tolerating the lipid-rich, acidic conditions of human skin better than their animal-loving relatives.

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