Phylogenetic affiliation of the desert truffles Picoa juniperi and Picoa lefebvrei

Sbissi, Imed; Neffati, Mohamed; Boudabous, Abdellatif; Murat, Claude; Gtari, Maher

doi:10.1007/s10482-010-9456-y

Cited by 19 publications

(14 citation statements)

References 24 publications

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“…The results of this study revealed Geopora (except G. pellita) as a monophyletic group using maximum-parsimony and Bayesian analyses, but neither Phaeangium nor Picoa were included in the dataset. Using either 28S or ITS rDNA sequence data, our analyses place these two genera within a paraphyletic Geopora with high confidence, at least under the maximum-likelihood criterion, in agreement with the results obtained by Guevara-Guerrero et al (2011) and Sbissi et al (2010), and highlighting the importance of sufficient taxon sampling. Because Sepultaria already exists as a validly published name for the apothecial Geopora spp., there is little reason for not using it once again for these fungi.…”

Section: Classification Of G Pellita Relative To Geopora and Tricharinasupporting

confidence: 89%

Hoffmannoscypha, a novel genus of brightly coloured, cupulate Pyronemataceae closely related to Tricharina and Geopora

Stielow

Hensel²,

Strobelt³

et al. 2012

Mycol Progress

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CitationHoffmannoscypha, a novel genus of brightly coloured, cupulate Pyronemataceae closely related to Tricharina and Geopora 2012, 12 (4) AbstractThe rare apothecial, cupulate fungus Geopora pellita (Pyronemataceae) is characterized by a uniquely bright yellow-orange excipulum. We here re-examine its affiliations by use of morphological, molecular phylogenetic and ultrastructural analyses. G. pellita appears as phylogenetically rather isolated, being the sister group of a clade comprising Phaeangium, Picoa, the majority of the Tricharina species, and the remaining Geopora species. Based on its phylogenetic position and its unique combination of morphological characters, we assign G. pellita to Hoffmannoscypha, gen. nov., as H. pellita, comb. nov. As in a previous study, analyses of both large subunit (LSU) and internal transcribed spacer (ITS) ribosomal DNA suggest that the remaining genus Geopora is paraphyletic, with the hypogeous, ptychothecial type species more closely related to Picoa and Phaeangium than to the greyish-brownish cupulate and apothecial Geopora spp., indicating that the latter should be reassigned to the genus Sepultaria. The current study also shows that ITS confirm LSU data regarding the polyphyly of Tricharina.

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Section: Classification Of G Pellita Relative To Geopora and Tricharinasupporting

confidence: 89%

Hoffmannoscypha, a novel genus of brightly coloured, cupulate Pyronemataceae closely related to Tricharina and Geopora

Stielow

Hensel²,

Strobelt³

et al. 2012

Mycol Progress

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“…With regard to bacteria that have been well explored in southern desert region of Tunisia [28–31], data related to fungi are scarce and are limited to truffle and mycorrhiza, so far considered as real specialists of desert environments [32, 33]. To the best of our knowledge, this is the first report on the isolation and characterization of fungi from Tunisian desert and particularly from salt flat.…”

Section: Discussionmentioning

confidence: 99%

Diversity and Enzymatic Profiling of Halotolerant Micromycetes from Sebkha El Melah, a Saharan Salt Flat in Southern Tunisia

Jaouani

Neifar

Prigione

et al. 2014

BioMed Research International

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Twenty-one moderately halotolerant fungi have been isolated from sample ashes collected from Sebkha El Melah, a Saharan salt flat located in southern Tunisia. Based on morphology and sequence inference from the internal transcribed spacer regions, 28S rRNA gene and other specific genes such as β-tubulin, actin, calmodulin, and glyceraldehyde-3-phosphate dehydrogenase, the isolates were found to be distributed over 15 taxa belonging to 6 genera of Ascomycetes: Cladosporium (n = 3), Alternaria (n = 4), Aspergillus (n = 3), Penicillium (n = 5), Ulocladium (n = 2), and Engyodontium (n = 2). Their tolerance to different concentrations of salt in solid and liquid media was examined. Excepting Cladosporium cladosporioides JA18, all isolates were considered as alkali-halotolerant since they were able to grow in media containing 10% of salt with an initial pH 10. All isolates were resistant to oxidative stresses and low temperature whereas 5 strains belonging to Alternaria, Ulocladium, and Aspergillus genera were able to grow at 45°C. The screening of fungal strains for sets of enzyme production, namely, cellulase (CMCase), amylase, protease, lipase, and laccase, in presence of 10% NaCl, showed a variety of extracellular hydrolytic and oxidative profiles. Protease was the most abundant enzyme produced whereas laccase producers were members of the genus Cladosporium.

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“…uncinatum, with a blackish brown peridium with polygonal warts. The gleba is white with fertile tissue separated by sterile veins [34] and a sweet smell and coconutlike flavor that is altered when parasitized by Melanospora zobelii. With six-eight oval ascospores per asci, P. juniperi is differentiated from P. lefebvrei by its smooth appearance [34].…”

Section: Picoa Juniperi Vittadmentioning

confidence: 99%

“…The gleba is white with fertile tissue separated by sterile veins [34] and a sweet smell and coconutlike flavor that is altered when parasitized by Melanospora zobelii. With six-eight oval ascospores per asci, P. juniperi is differentiated from P. lefebvrei by its smooth appearance [34]. The small size of ascocarps, i.e., 1-3 cm, limits the market potential of this species but it is readily consumed when found with other desert truffle species.…”

Section: Picoa Juniperi Vittadmentioning

confidence: 99%

“…In Morocco, P. juniperi is often called Ed doukar, where it favors calcareous soils and is rare; however, it is harvested in February, and its hosts are Terfezia claveryi and Helianthemum lipii [20,35]. In Tunisia, the harvest season is similar, with this species being found in February with its hosts H. lipii, H. sessiliflorum, and Rhanterium suaveolens [34][35][36].…”

Section: Picoa Juniperi Vittadmentioning

confidence: 99%

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Truffle and truffle-like fungi from continental Africa

2019

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Africa is a diverse continent composed of many different terrestrial biomes, from the largest nonpolar desert in the world to equatorial forests and Southern African Fynbos. Biodiversity within the continent is high but much remains to be discovered. Sightings of hypogeous fruiting bodies of mycorrhizal fungi (truffles and truffle-like fungi) have been recorded from the most northern countries of the continent to the most southern countries; they have been widely collected for culinary and medicinal purposes. In this review, we describe the most prominent species of mycorrhizal fungi forming hypogeal fruiting bodies, across six genera. The most ubiquitous of these are the “desert truffle” species and the most common genus of plants with which they associate are those of the genus <em>Helianthemum</em>. We also describe the key species of truffle and truffle-like fungi in continental Africa. Where information exists, we describe the ecology, medicinal properties, and ethnomycology of the identified fungi.

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Phylogenetic affiliation of the desert truffles Picoa juniperi and Picoa lefebvrei

Cited by 19 publications

References 24 publications

Hoffmannoscypha, a novel genus of brightly coloured, cupulate Pyronemataceae closely related to Tricharina and Geopora

Hoffmannoscypha, a novel genus of brightly coloured, cupulate Pyronemataceae closely related to Tricharina and Geopora

Diversity and Enzymatic Profiling of Halotolerant Micromycetes from Sebkha El Melah, a Saharan Salt Flat in Southern Tunisia

Truffle and truffle-like fungi from continental Africa

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