112 - Tsuchiyaea Y. Yamada, Kawasaki, M. Itoh, Banno & Nakase

Abstract

This chapter focuses on Tsuchiyaea genus and its member species. The cells of this genus are globose, ovoid to cylindrical, and reproduce by the formation of enteroblastic buds or of conidia on stalks. A single conidium is formed at the top of the stalks and liberated at a septum in the mid-region of the stalks without projection. The sole member species of this genus is Tsuchiyaea wingfieldii. After undergoing growth in malt extract for three days at 25° C, the cells of this species appear as globose to ellipsoidal, reproduce by enteroblastic budding, and occur singly, in pairs or short chains. A sediment, ring, and islets are formed, and after four weeks at ambient temperature, a layer of sediment and a thick, wrinkled creeping pellicle are present. After undergoing growth on malt agar for three days at 25° C, the cells appear as globose, ellipsoidal, ovoid, occasionally apiculate, and occur singly, or in pairs or in short chains, and reproduce either by enteroblastic budding or by the formation of stalks which delimit conidia terminally. The conidia are detached by disjunction at a septum in the mid-region of the stalks, and the mature, detached conidia, appear as clavate to spathulate, with truncate bases.