Phylogenetic affiliation of the desert truffles <Emphasis Type="Italic">Picoa juniperi</Emphasis> and <Emphasis Type="Italic">Picoa lefebvrei</Emphasis> |
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| Authors: | Imed Sbissi Mohamed Neffati Abdellatif Boudabous Claude Murat Maher Gtari |
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| Institution: | 1.Laboratoire Microorganismes and Biomolécules Actives, Département de Biologie,Faculté des Sciences de Tunis,Tunis,Tunisia;2.Laboratoire d’Ecologie Pastorale,Institut des Régions Arides,Médenine,Tunisia;3.UMR INRA-UHP ‘Interactions Arbres-Microorganismes’,INRA-Nancy,Champenoux,France |
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| Abstract: | The molecular phylogeny and comparative morphological studies reported here provide evidence for the recognition of the genus
Picoa, an hypogeous desert truffle, in the family Pyronemataceae (Ascomycota, Pezizales). Picoa juniperi and Picoa lefebvrei were reassigned to the genus Picoa based on large subunit (LSU) sequence (28S) rDNA and internal transcribed spacer (ITS) rDNA (including the partial 18S, ITS1,
ITS2, 5.8S gene, and partial 28S of the nuclear rDNA) data. Morphological studies of spores, asci, perida, and gleba revealed
high similarities between P. lefebvrei and P. juniperi, thereby confirming the membership of both species in the genus Picoa. These two species were primarily distinguishable based on ascospore ornamentation. |
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