| Popis: |
Publisher Summary This chapter describes the teleomorphic and anamorphic genera of ascomycetous yeasts. The teleomorphic genera of ascomycetous yeasts include Ambrosiozyma, Arxiozyma, Ascoidea, and Babjevia. The anamorphic genera of ascomycetous yeasts include Aciculoconidium, Arxula, Blastobotrys, Botryozyma, and Brettanomyces. Asci in Ambrosiozyma are generally attached to hyphae, often in clusters, and they usually become deliquescent at maturity.Sugars are fermented, often slowly or weakly and nitrate is assimilated by some of the species of this genus. Vegetative reproduction in Arxiozynta occurs through multilateral budding, where pseudohyphae may form but true hyphae are absent. Pellicles are not formed on liquid media and extracellular starch-like compounds are not produced. Urease production is not determined and gelatin liquefaction is variable in this genus. Vegetative reproduction in Aciculoconidium takes place through multilateral budding, where pseudohyphae and true hyphae with blastoconidia are present. The diagnosis of the genus is the presence of blastoconidia, each with a needle-shaped terminus and a rounded base. |
