Curvibasidium cygneicollum gen. nov., sp. nov. and Curvibasidium pallidicorallinum sp. nov., novel taxa in the Microbotryomycetidae (Urediniomycetes), and their relationship with Rhodotorula fujisanensis and Rhodotorula nothofagi.
Strains of Rhodotorula fujisanensis (Basidiomycota, Urediniomycetes, Microbotryomycetidae), including the type strain, are sexually compatible and produce clamped mycelium with teliospores. However, as teliospore germination had not been documented, the complete sexual cycle was not known. During the course of this work, the basidial stage of R. fujisanensis was characterized. In addition, mating studies employing isolates that were identified preliminarily as Rhodotorula nothofagi, a species that is related closely to R. fujisanensis, yielded mycelium with teliospores, which formed basidia and basidiospores. The new data were evaluated by using several criteria, including the available molecular phylogenetic framework for the Microbotryomycetidae. Curvibasidium gen. nov. is described here, to accommodate two teleomorphs: Curvibasidium cygneicollum sp. nov. (CBS 4551T), which is described as the sexual stage of R. fujisanensis, and Curvibasidium pallidicorallinum sp. nov. (CBS 9091T), which is related closely to R. nothofagi, but does not represent its sexual stage.
Centro de Recursos Microbiológicos, Secção Autónoma de Biotecnologia, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
José Paulo
JP
Sampaio
Russia Collection of Microorganisms, Institute for Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Pushchino 142290, Russia.
Wladyslav I
WI
Golubev
Rosenstiel School of Marine and Atmospheric Science, University of Miami, 4600 Rickenbacker Causeway, Key Biscayne, FL 33419, USA.
Jack W
JW
Fell
Centro de Recursos Microbiológicos, Secção Autónoma de Biotecnologia, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
Mário
M
Gadanho
Mendeleev Chemical-Technological University, Moscow 125820, Russia.
Nikita W
NW
Golubev
D001487:Basidiomycota / Q000145:classification* / Q000166:cytology / Q000302:isolation & purification / Q000502:physiology; D004271:DNA, Fungal / Q000737:chemistry / Q000302:isolation & purification; D004275:DNA, Ribosomal / Q000737:chemistry; D021903:DNA, Ribosomal Spacer / Q000235:genetics; D020459:Genes, rRNA; D008969:Molecular Sequence Data; D025282:Mycelium / Q000166:cytology; D016533:Mycological Typing Techniques; D010802:Phylogeny; D012331:RNA, Fungal / Q000235:genetics; D012335:RNA, Ribosomal / Q000235:genetics; D012248:Rhodotorula / Q000145:classification* / Q000166:cytology / Q000302:isolation & purification / Q000502:physiology; D017422:Sequence Analysis, DNA; D017385:Sequence Homology; D013172:Spores, Fungal / Q000166:cytology; D015003:Yeasts / Q000166:cytology
D004271:DNA, Fungal; D004275:DNA, Ribosomal; D021903:DNA, Ribosomal Spacer; D012331:RNA, Fungal; D012335:RNA, Ribosomal; C065096:RNA, ribosomal, 26S