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Abstract
The ITS region including the 5.8S rRNA gene as well as the 5' end of the 28S rRNA gene of hypogeous
Pezizaceae and
Tuberaceae were studied to clarify the generic placement of two southern African desert truffles,
Terfezia pfeilii and
Choiromyces echinulatus. The results show that neither species belongs in the genus to which it has been assigned on the basis of morphological characters. As expected, two
Choiromyces spp. grouped close to the representative of the
Tuberaceae (
Tuber melanosporum). However,
C. echinulatus diverged from the other
Choiromyces species and emerged near members of the genus
Terfezia, being even closer to that genus than
T. pfeilii. Two new genera and new species combinations,
Kalaharituber gen. nov. with
K. pfeilii (syn.
T. pfeilii) comb. nov. and
Eremiomyces gen. nov. with
E. echinulatus (syn.
C. echinulatus) comb. nov. are therefore introduced to accomodate these taxa. Both genera are closely related to
Terfeziia, and thus are placed in the
Pezizaceae.
Citation
Ferdman, Yael; Aviram, Sharon; Roth-Bejerano, Nurit; Trappe, James M.; Kagan-Zur, Varda. 2005. Phylogenetic studies of
Terfezia pfeilii and
Choiromyces echinulatus (
Pezizales) support new genera for southern African truffles:
Kalaharituber and
Eremiomyces. Mycology Research. 109(2): 237-245
