Abstract

This chapter focuses on Citeromyces genusand its constituent species. Asexual reproduction in this species is by multilateral budding on a narrow base. Cells are spheroidal to ellipsoidal, and neither pseudohyphae nor true hyphae are produced. Asci are persistent and contain one or infrequently two roughened spheroidal ascospores. Asci arise from diploid cells or from conjugation between complementary mating types. The only constituent species of this genus is Citeromyces matritensis. Various natural isolates of this species are diploid and its vegetative cells convert directly into asci. Asci have thick persistent walls and contain one or infrequently, two spheroidal ascospores with a roughened wall and a prominent lipid droplet. Sporulation is usually abundant on YM agar, and well-sporulated cultures turn red to brown. After 3 days at 25° C in 5% malt extract agar, the cells appear as spheroidal to ellipsoidal and occur as singles, pairs, or in threes, and may have one or two buds.

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