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Phylogenetic Studies of Terfezia pfeilii and Choiromyces echinulatus (Pezizales) support new genera for southern African truffles: Kalaharituber and Eremiomyces

Published online by Cambridge University Press:  28 February 2005

Yael FERDMAN ,
Sharon AVIRAM ,
Nurit ROTH-BEJERANO ,
James M. TRAPPE  and
Varda KAGAN-ZUR
Yael FERDMAN
Affiliation:
Department of Life Sciences, Ben-Gurion University, POB 653, Beer-Sheva, 84105, Israel.
Sharon AVIRAM
Affiliation:
Department of Life Sciences, Ben-Gurion University, POB 653, Beer-Sheva, 84105, Israel.
Nurit ROTH-BEJERANO
Affiliation:
Department of Life Sciences, Ben-Gurion University, POB 653, Beer-Sheva, 84105, Israel.
James M. TRAPPE
Affiliation:
Department of Forest Science, Oregon State University, Corvallis, Oregon, USA 97331-5752.
Varda KAGAN-ZUR
Affiliation:
Institutes for Applied Research, Ben-Gurion University, POB 653, Beer-Sheva, 84105, Israel. E-mail: [email protected]
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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 Terfezia, and thus are placed in the Pezizaceae.

Type
Research Article
Information
Mycological Research , Volume 109 , Issue 2 , February 2005 , pp. 237 - 245
Copyright
© The British Mycological Society 2005

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