89. Genera Fusarium and Stachybotrys.

Question 1

Habitat Culture and Pathogenecity? Fungi fusarium

Answer 1

Habitat

feed

Culture

asexual reproduction (macroconidia,

microconidia)
pigment production
mycotoxin production
Pathogenicity

F. graminearum, F. sporotrichoides : T-2, F-2 toxin
T2 toxin: pig, cattle, poultry: cytotoxicity, immunosuppression, hemorrhage, feed refusal in pig, rumenitis in cattle
F2 toxin: pig, cattle: oestrogenic activity, hyperaemia, oedema of vulva, anoestrus, reduced litter size in mature sows. Reduced fertility in cattle
F. moniliforme: fumonisins: leukoencephalomalacia in horses, pig: pulmonary oedema

Question 2

Fungi strachybotrys?

Answer 2

Pathogenicity

S. atra: utilisation of cellulose, black colonies
toxin: stachybotryotoxins
horse, cattle, sheep, pig: cytotoxicity, haemorrhages, immunosuppression, necrotic lesion in the alimentary tract