Explain the Alternaria - Fungi?

Classification

Kingdom - Mycetae

Division - Amastigomycota

Form Class - Deuteromycetes

Form Subclass - Hyphomycetidae

Form Order - Moniliales

Form Family - Dematiaceae

Form Genus - Alternaria

Alternaria is widely distributed and is one of the common laboratory contaminants. Usually it grows as saprophyte on dead organisms but some are pathogenic to plants, animals and human e.g. early blight of potato (A. solani), leaf spot disease in crucifers (A. brassicae), leaf blight of wheat seedlings (A. tenuis), infection of mustard seeds (A. brassiciae), allergies and skin diseases in humans etc. Alternaria also causes decomposition of fruits and vegetables.