![Sample our Environment & Agriculture journals, sign in here to start your access, latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5934/TOC-Subject-Sample-2021-Environment-Agriculture.jpg"})
Abstract
A group of Fusarium strains first distinguished by the production of a diffusing yellow pigment is now described as a separate species, Fusarium thapsinum. The teleomorph, Gibberella thapsina, can be formed under laboratory conditions by crossing strains of opposite mating type on carrot agar. Fusarium thapsinum was recovered from banana, maize, peanut and sorghum in Egypt, South Africa, the Philippines, Thailand, and nine states in the United States. Members of this species are morphologically similar to Fusarium moniliforme (Gibberella fujikuroi mating population A), but the two groups are reproductively isolated and can be distinguished by other characters such as mycotoxins produced, isozyme polymorphism, electrophoretic karyotype, benomyl sensitivity, and differences in the sequence of the internally transcribed spacer (ITS) region of the ribosomal DNA repeat.