Rhizoctonia sapphoae (Y.P. Tan) O’Donnell, R. P., Linde, C. C. & May, T. W., 2025
publication ID |
https://doi.org/10.3114/persoonia.2025.54.09 |
persistent identifier |
https://treatment.plazi.org/id/03A69C14-FF86-FF86-FFE3-FBCF62FF48AA |
treatment provided by |
Felipe |
scientific name |
Rhizoctonia sapphoae (Y.P. Tan) |
status |
comb. nov. |
Rhizoctonia sapphoae (Y.P. Tan) R.P. O’Donnell, C.C. Linde & T.W. May, comb. nov. MB 856696 View Materials
Basionym: Ceratobasidium sapphoae Y.P. Tan , Index of Australian Fungi 41: 5. 2024.
Type citation: ‘ Australia, Queensland, Gatton, from stem rot of Trifolium repens ( Fabaceae ), 7 Jun. 1996, J. Mackie (holotype BRIP 27716a permanently preserved in a metabolically inactive state).’
ITS barcode. PQ061108 ( T).
UNITE 1.5 % SH: n/a.
Notes: The ITS sequence from the type of Rhizoctonia sapphoae is 96.7 % similar to that of R. myrtisiae , which we equate with AG-Fa. No morphological information was provided with the description of R. sapphoae and it and R. myrtisiae were described on the basis of single collections. The accompanying phylogenetic tree ( Tan & Shivas 2024) did not include any other closely related sequences, making it impossible to assess where the cut-off for species delimitation lies in this lineage. We note that the ITS sequence from the type of R. sapphoae also has high BLAST matches against sequences identified as AG-F in various studies, as for example the 98–100 % matches against sequences assigned to AG-F by Muzhinji & Lekota (2024: e.g. GenBank MK442087 View Materials at 100 %), but specifically against AG-F when treated as a separate but sister clade to Ag-Fa. Combining subgroups of AG-F, Sharon et al. (2008), tabulated 90–100 % within group variation, indicating that further species-level taxa are likely to be found among isolates assigned to AG-F. A phylogenetic study of a wide range of isolates assigned to AG-F – including sequences from types of names such as R. sapphoae – would be instructive.
J |
University of the Witwatersrand |
BRIP |
Department of Agriculture, Fisheries and Forestry |
T |
Tavera, Department of Geology and Geophysics |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Rhizoctonia sapphoae (Y.P. Tan)
O’Donnell, R. P., Linde, C. C. & May, T. W. 2025 |
Ceratobasidium sapphoae Y.P. Tan
Y. P. Tan 2024: 5 |