Tremellales » Cryptococcaceae

Kwoniella

Kwoniella Statzell & Fell 2008, in Statzell-Tallman, et al., FEMS yeast research, 8, 103-113 (2008)

Etymology: Kwoniella is named in recognition of Dr K.J. Kwon-Chung for her research contributions to the Tremellales, with specific acknowledgement of her significant advances in the systematics and biology of Filobasidiella neoformans.

Diagnosis: Based on the life cycle and molecular phylogenetic sequence analysis of the rRNA gene (LSU D1/D2 domains, ITS1, 5.8S and ITS2), Kwoniella is a member of the Tremellales. Basidiocarps are absent. The fungus is dimorphic, with a yeast state and extensive dikaryotic hyphae with clamp connections that develop following conjugation of compatible pairs of strains. Basidia form laterally on branches, intercalarily or on the terminal hyphal cell. Basidia vary in shape from globose to subglobose, lageniform to ovoid with transverse and longitudinal to oblique septa. Navicular basidia have one to three transverse septa. The globose basidia occur singly, in pairs or in chains. Basidiospores are globose, ovoid to cylindrical and passively released. Neither ballistoconidia nor ballistospores are present. Fermentation is absent. Starch-like compounds are produced. Myo-inositol and D-glucuronate are utilized for growth. A brownish pigment is produced that diffuses into solid media (potato dextrose agar). Diazonium blue B and urease reactions are positive.

Index Fungorum Number: IF508497

Type species: Kwoniella mangrovensis Statzell, Belloch & Fell 2008, in Statzell-Tallman, et al., FEMS yeast research, 8, 103-113 (2008)

Species:

Kwoniella bestiolae (Thanh, Hai & Lachance) Xin Zhan Liu, F.Y. Bai, M. Groenew. & Boekhout 2015

Kwoniella betulae K. Sylvester, Q.M. Wang & Hittinger 2015

Kwoniella botswanensis Á. Fonseca, D. Springer & Heitman 2013

Kwoniella dejecticola (Thanh, Hai & Lachance) Xin Zhan Liu, F.Y. Bai, M. Groenew. & Boekhout 2015

Kwoniella dendrophila (Van der Walt & D.B. Scott) Xin Zhan Liu, F.Y. Bai, M. Groenew. & Boekhout 2015

Kwoniella endophytica A.M. Glushakova & Kachalkin 2018

Kwoniella europaea Á. Fonseca & M. Guerreiro 2013

Kwoniella fici Turchetti & Buzzini 2019

Kwoniella heveanensis Metin, K. Findley & Heitman 2011

Kwoniella mangrovensis Statzell, Belloch & Fell 2008

Kwoniella newhampshirensis K. Sylvester, Q.M. Wang & Hittinger 2020

Kwoniella ovata Q.M. Wang, F.Y. Bai & A.H. Li 2020

Kwoniella pini (Golubev & I. Pfeiff.) Xin Zhan Liu, F.Y. Bai, M. Groenew. & Boekhout 2015

Kwoniella shandongensis R. Chen, Yuan M. Jiang & S.C. Wei ex M. Groenew. & Q.M. Wang 2020

Kwoniella shivajii (R.Sreen. Rao, S.A. James, C.J. Bond, I.N. Roberts, K. Cross, Retter & P.J. Hobbs) Xin Zhan Liu, F.Y. Bai, M. Groenew. & Boekhout 2015

Reference:

Statzell-Tallman, A., & Belloch, C., & Fell, J.W. (2008). Kwoniella mangroviensis gen. nov., sp. nov.(Tremellales, Basidiomycota), a teleomorphic yeast from mangrove habitats in the Florida Everglades and Bahamas. FEMS yeast research, 8, 103-113.

 

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