Two interesting species of cleistothecial Ascomycetes withAspergillus anamorphs are described:Fennellia flavipes andNeosartorya stramenia. Both species were isolated from soil smaples collected in 1992 as a new record to Japan.
"walled hyphae , and ascospores that are hyaline to pale yellow and smooth - walled with an inconspicuous equatorial groove or ridge . The sexual stage of F . flavipes differs from that of A . terreus by the presence of elongate or helical hü lle cells surrounding cleisto - thecia and by asci that are mostly four - spored ( Wiley and Fennell 1973 , Yaguchi et al . 1994 ) ."
[Show abstract][Hide abstract] ABSTRACT: Aspergillus terreus has a worldwide distribution in soil, constitutes the third most important cause of invasive aspergillosis in humans and is classically regarded as a strictly asexual species. Strains of A. terreus were characterized by ITS, β-tubulin and calmodulin sequences. Mating type was identified by amplifying and sequencing MAT1-1 and MAT1-2 genes. One MAT1-2 strain produced hyphal masses when crossed with four MAT1-1 strains on mixed cereal agar after 3 wk at 37 C. Cleistothecia formed inside the hyphal masses and produced asci containing smooth-walled ascospores with an equatorial protuberance. This is the first report of sexual reproduction in A. terreus.
"It is easily distinguished from the new species in its slow growth habits on CzA and CYA, smaller ascomata (50-175/~m in diam), larger ascospores (6.5-7.5 x 4-5 ffm incl. crests) with two well separated equatorial crests, and globose conidia (Raper and Fennell, 1965; Yaguchi et al., 1994a). "
[Show abstract][Hide abstract] ABSTRACT: A new species ofNeosartorya, N. sublevispora (anam.Aspergillus sublevisporus), is described and photographed. The species is characterized by non-ostiolate ascomata covered loosely with a pale yellowish
hyphal envelope, lenticular ascospores with two low equatorial crests, and subglobose to ellipsoidal, microtuberculate conidia.
The ornamentation of ascospores, which is composed of two closely appreassed crests and small even-sized echines on their
convex surfaces, particularly serves to distinguish this species from other recognized species. A revised key to all accepted
species of the genus is provided.
[Show abstract][Hide abstract] ABSTRACT: Aspergillus taichungensis isolated from a soil sample collected in Taiwan is described as a new species. The new species is characterized by its restricted growth on Czapek's and malt extract agars and its white to light yellow colonies, radiate conidial heads, smooth and often diminutive conidiophores, hemispherical to elongate vesicles with biseriate aspergilla (conidiogenous cells), globose, micro-verrucose conidia and dark brown sclerotia. The species somewhat resemblesA. versicolor, A. terreus andA. flavipes, but differs in cultural and morphological details, and is considered to represent an interface species in the subgenusNidulantes.
Note: This list is based on the publications in our database and might not be exhaustive.
Data provided are for informational purposes only. Although carefully collected, accuracy cannot be guaranteed. The impact factor represents a rough estimation of the journal's impact factor and does not reflect the actual current impact factor. Publisher conditions are provided by RoMEO. Differing provisions from the publisher's actual policy or licence agreement may be applicable.