Hallmarks of RNA silencing are found in the smut fungus Ustilago hordei but not in its close relative Ustilago maydis.

Laurie, J.D., Linning, R., and Bakkeren, G. (2008). "Hallmarks of RNA silencing are found in the smut fungus Ustilago hordei but not in its close relative Ustilago maydis.", IVth International Ustilago Meeting, Rauischholzhausen, Germany, August 20-24, 2008. (Presentation)