MURFREESBORO, Tenn. — MTSU professor Tony Johnston will discuss the growth of the U.S. artisanal distillery spirit and craft brewing industries in an upcoming bilingual, virtual international seminar that will be free and available to the public.At the Wines and Distilled Spirits of the Americas event, Johnston, director of the MTSU Fermentation Science program, will appear along with representatives from Peru and Argentina universities.The seminar will b .