Sporidiobolus Nyland (1949)

This chapter studies the genus Sporidiobolus. In the determination of asexual reproduction it is found that reproduction is by budding and by formation of ballistoconidia. Yeast cells are ovoid, ellipsoidal, or elongate. Visible carotenoid pigments are formed and the cultures are pink to orange in color. In sexual reproduction it is seen that hyphae have clamp connections. Spherical teliospores are formed and germinate to produce transversely septate basidia with ovoid to bacilliform basidiospores, which are passively released and germinate by budding. In physiology and biochemistry it is seen that fermentation is absent. This chapter further examines phylogenetic placement. The type species mentioned is Sporidiobolus johnsonii. The species accepted are Sporidiobolus johnsonii, Sporidiobolus longiusculus, Sporidiobolus metaroseus, Sporidiobolus microsporus, Sporidiobolus pararoseus, Sporidiobolus ruineniae, and Sporidiobolus salmonicolor. The systematic discussion of the species includes synonyms, growth on 5% malt extract agar, Dalmau plate culture on corn meal agar, sexual state, CoQ, fermentation, Mol% G + C, gene sequence accession number, type strain, cell carbohydrates, origin of the strains studied, systematics, ecology, biotechnology, and agriculture and food. © 2011