Anti-Therapeutic Action: Plant pathogenic

Identification and biological characteristics of Fusarium tobaccum sp. nov., a novel species causing tobacco root rot in Jilin Province, China

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Scientists in China discovered a new type of fungus called Fusarium tobaccum that causes a serious disease in tobacco plants called root rot and wilt. By analyzing the fungus’s genetic material and physical characteristics, they confirmed it was a previously unknown species. The researchers also studied how this fungus grows under different conditions like temperature and soil pH to better understand how it causes disease.

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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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Hidden treasures of herbaria – even small collections contain a wealth of diversity: the powdery mildews of the North Carolina State Larry F. Grand Mycological Herbarium

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This study examined a collection of powdery mildew fungi preserved in a university herbarium and used DNA analysis to identify which specimens had been misidentified over the years. The researchers found that about 83% of the specimens had incorrect identifications and discovered four completely new species that look very similar to known species but are genetically distinct. The findings show that old museum collections are valuable resources for discovering hidden biodiversity and that we should preserve these collections rather than discard them.

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