Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 9/15/2016
Publication Date: N/A
Technical Abstract: Analyses of concatenated gene sequences as well as whole genome sequences are resolving relationships among the ascomycete yeasts (Saccharomycotina), thus allowing classification of members of this subphylum to be based on phylogeny. In addition, changes implemented in the new Botanical Code [International Code of Nomenclature for algae, fungi, and plants (Melbourne Code)] now permit placement of related teleomorphic and anamorphic species in the same genus, rather than assigning them to separate genera as was required under earlier editions of the Code. With these changes, ascosporic genera are being recircumscribed and asexual species are being placed in these genera or in separate genera when well isolated from described genera. Since publication of The Yeasts, a Taxonomic Study, 5th edn. (2011), gene sequence analyses have led to circumscription of the new ascosporic genera Alloascoidea, Diddensiella, Hemisphaericaspora, and Spencermartinsiella and the non-ascosporic genera Danielozyma, Deakozyma, Groenewaldozyma, Martiniozyma, Middelhovenomyces, Suhomyces, and Teunomyces. The asexual genera were derived from various clades of the polyphyletic genus Candida, and as will be discussed, many additional genera will be derived from the recircumscribed genus Candida. Based on whole genome analyses, placement of genera in the Saccharomycotina will be discussed.