articleJournal of FungiJan 13, 2026GOLD OA

An Overview of the Alternaria Genus: Ecology, Pathogenicity and Importance for Agriculture and Human Health

Far Eastern Federal University · Federal Scientific Center of the East Asia Terrestrial Biodiversity FEB RAS

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Abstract

Alternaria is a widespread genus and a diverse taxonomic group of fungi, whose members exhibit a wide range of ecological roles, from endophytes and saprophytes to potent plant pathogens, and in some cases, to opportunistic pathogens or allergens affecting humans. Their high adaptability to various environmental conditions determines their widespread distribution and resilience. A key feature of the genus Alternaria is its substantial species diversity. According to the Species Fungorum database, it currently comprises 792 registered species, which are grouped into 29 sections. It should be noted that this number reflects the current state of taxonomic classification and is subject to ongoing revision. The…

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