Tilletiopsis sp. TKC30 v1.0
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Cell morphology (left) and colony morphology (right) of Tilletiopsis sp. TKC 30. Bars = 20 microns (left) and 2.5 mm (right). Photo courtesy: Teeratas Kijpornyongpan.
Cell morphology (left) and colony morphology (right) of Tilletiopsis sp. TKC 30. Bars = 20 microns (left) and 2.5 mm (right). Photo courtesy: Teeratas Kijpornyongpan.

The isolate Tilletiopsis sp. TKC30 represents an undescribed species closely related to T. pallescens. Tilletiopsis pallescens was first described as an epiphytic yeast-like fungus (Gokhale, 1972). It has been shown to have potential as a biological control agent against powdery mildew fungi (Klecan et al., 1990; Urquhart et al., 1994; Urquhart et al., 1997). Tilletiopsis pallescens was initially classified in the genus Tilletiopsis based on morphological similarities to the type species T. washingtonensis (Exobasidiomycetes, Ustilaginomycotina) (Gokhale, 1972). However, subsequent phylogenetic analyses revealed that it does not belong to Tilletiopsis sensu stricto (Begerow et al., 2006; Wang et al., 2015).

The genome of Tilletiopsis sp. TKC30 will represent the first reference genome of the T. pallescens lineage. Researchers will utilize this genome for phylogenomic reconstruction to determine the phylogenetic placement of this lineage within subphylum Ustilaginomycotina. Additionally, the genome will provide a resource for comparative genomics in order to explore genes involved in biological control of pathogenic fungi.

If you would like to use this genome in your research, please contact Dr. M. Catherine Aime (maime@purdue.edu) and Dr. Igor Grigoriev (ivgrigoriev@lbl.gov) for permission.


References:

Begerow D, Stoll M, Bauer R. 2006. A phylogenetic hypothesis of Ustilaginomycotina based on multiple gene analyses and morphological data. Mycologia 98(6): 906–16.
Gokhale AA. 1972. Studies on the genus Tilletiopsis. Nova Hedwigia 23: 795–809.
Klecan AL, Hippe S, Somerville SC. 1990. Reduced growth of Erysiphe graminis f. sp. hordei induced by Tilletiopsis pallescens. Phytopathology 80(4): 325–331.
Urquhart EJ, Menzies JG, Punja ZK. 1994. Growth and biological activity of Tilletiopsis species against powdery mildew (Sphaerotheca fuliginea) on greenhouse cucumber. Phytopathology 84(4): 341–351.
Urquhart EJ, Punja ZK. 1997. Epiphytic growth and survival of Tilletiopsis pallescens, a potential biological control agent of Sphaerotheca fuliginea, on cucumber leaves. Canadian Journal of Botany 75(6): 892–901.
Wang QM, Begerow D, Groenewald M, Liu XZ, Theelen B, Bai FY, et al. 2015. Multigene phylogeny and taxonomic revision of yeasts and related fungi in the Ustilaginomycotina. Studies in Mycology 81: 55–83.