Where does the peanut smut pathogen, Thecaphora frezii, fit in the spectrum of smut diseases?

ARIAS, SILVINA; MARY, VERÓNICA SOFÍA; VELEZ, PILAR ANDREA; RODRIGUEZ, MARÍA GISEL; OTAIZA GONZÁLEZ, SANTIAGO NICOLÁS; THEUMER, MARTIN GUSTAVO

PLANT DISEASE

AMER PHYTOPATHOLOGICAL SOC

Año: 2021

0191-2917

mut fungi, such as Ustilago maydis, have been studied extensively as a model for plant- pathogenic basidiomycetes. However, little attention has been paid to smut diseases of agronomic importance that are caused by species of the fungus Thecaphora spp., probably due to their more localized distribution. Peanut smut by T. frezii has been reported only in South America, with Argentina being the only country where this disease has been noted in commercial species. In this work, important advances in deciphering T. frezii specific biology/pathobiology in relation to the agronomically relevant potato (T. solani), wheat (U. tritici) and barley (U. nuda) smuts are presented. The state of knowledge of fungal effectors, functionally characterized to date in U. maydis and most recently in T. thlaspeos, as well as the potential to be present in other Thecaphora species involved in dicot-host interactions like T. frezii-peanut, is summarized. We also discuss the applicability and limitations of c