Sporobolomyces yamatoanus, a new species of ballistosporous yeast equipped with ubiquinone-9 isolated from dead leaves of various plants in Japan.

Abstract

Nine strains of ballistospore-forming yeasts were isolated from dead leaves of various kinds of plants in Japan and were found to comprise a single, hitherto undescribed species of the genus Sporobolomyces. The species is described here as Sporobolomyces yamatoanus Nakase, Suzuki et Itoh. Sporobolomyces yamatoanus produces large, sickle-shaped to kidneyshaped ballistospores, produces pale colored colonies, has Q-9 as the major isoprenologue of the ubiquinones, and does not contain xylose in the cells. These characteristics coincide well with those of species placed in the intermedius group, a group of atypical species in the genus Sporobolomyces. This is the seventh species in the intermedius group.During a survey on ballistospore-forming yeasts living on the surface of Miscanthus sinensis, two strains of hitherto undescribed yeasts having Q-9 as the major ubiquinone were isolated (1). They seemed to comprise a single species. We did not describe this yeast as a new species but merely reported it as Sporobolomyces sp. because three additional strains, supposedly belonging to the same species, were obtained from dead leaves of Sasa sp. collected in a mountainous area of central Japan. Comparative studies of these strains were required before we could describe them as a new species (1). Later we isolated four additional strains of this undescribed yeast from plant materials collected at Mt. Fuji. These nine strains represent a single species. They are described here as the new species Sporobolomyces yamatoanus Nakase, Suzuki et Itoh.

Bensingtonia ingoldii sp. nov., a ballistospore-forming yeast isolated from Knightia excelsa collected in New Zealand.

“…Bensingtonia ingoldii assimilates 2-ketogluconic acid and 5-ketogluconic acid and resembles B. intermedia and B. yamatoana in these respects (7,10), however, it can be easily differentiated from these two species in the assimilation of nitrate and lactose, and in the requirement of pyridoxine.…”

Sporobolomyces linderae, a new ballistosporous anamorphic yeast found on a dead leaf of Lindera obtusiloba collected at Mt. Fuji.

“…Five species of yeasts out of nine represented hitherto undescribed species. Four new species, Ballistosporomyces ruber, Ballistosporomyces xanthus, Sporobolomyces yamatoanus and Bullera variabilis, were described for these yeasts (4,7,8). Later, Sp.…”

An electrophoretic comparison of enzymes in strains of the Q9-equipped species in the genus Sporobolomyces Kluyver et van Niel(Sporobolomycetaceae).

“…NAKASE and SuzuKI (6-8) and NAKASE et al (9) have isolated a number of ballistosporous yeasts and classified the Q9-equipped Sporobolomyces species in the intermedius group among the four groups of the genus Sporobolomyces. To date, the following seven species have been described: Sporobolomyces intermedius (Nakase et Suzuki) Nakase et Suzuki (1987) has subsequently been introduced (10).…”

“…To date, the following seven species have been described: Sporobolomyces intermedius (Nakase et Suzuki) Nakase et Suzuki (1987) has subsequently been introduced (10).…”