Question

Importance of
Ustilago, Puccina, Colletotrichum, Trichoderma.​

Answer 1

Ustilago is a genus of approximately 200 smut fungi parasitic on grasses. There is a large research community that works on Ustilago maydis including researchers at the University of Georgia, Philipps-Universität Marburg, University of British Columbia and others.

Puccinia is a genus of fungi. All species in this genus are obligate plant pathogens and are known as rusts. The genus contains about 4000 species.

Trichoderma is a genus of fungi in the family Hypocreaceae, that is present in all soils, where they are the most prevalent culturable fungi. ... This refers to the ability of several Trichoderma species to form mutualistic endophytic relationships with several plant species.