Mutagenic and antimutagenic properties of aqueous and ethanolic extracts from fresh and irradiated Tuber aestivum black truffle: A preliminary study

2007 ◽  
Vol 102 (2) ◽  
pp. 471-474 ◽  
Author(s):  
F FRATIANNI ◽  
A LUCCIA ◽  
R COPPOLA ◽  
F NAZZARO
Mycorrhiza ◽  
2019 ◽  
Vol 29 (3) ◽  
pp. 219-226 ◽  
Author(s):  
Aurélie Deveau ◽  
Philippe Clowez ◽  
François Petit ◽  
Jean-Paul Maurice ◽  
Flora Todesco ◽  
...  

2018 ◽  
Vol 47 (2) ◽  
pp. 478-486 ◽  
Author(s):  
Horea PĂCURAR ◽  
Marcel DÎRJA ◽  
Mihai BUTA ◽  
Ioan PĂCURAR ◽  
Sanda ROȘCA ◽  
...  

Truffles are one of the most hunted varieties of mushrooms in Europe due to their high price and their increasingly frequent use in the kitchen. As demonstrated by several studies, soil conditions are among the main factors that influence the spread and development of the black truffle species. The purpose of this study was to identify the soil factors which directly and indirectly influence the distribution of black truffles (Tuber aestivum Vittad.) in Romania and to identify the areas from the Subcarpathian Hills of Transylvania which are highly favourable to their existence and growth, using G.I.S. spatial analysis and databases which include soil characteristics (soil type, texture, gleization, stagno-gleization) and territorial localisation through GPS points indicating the samples of Tuber aestivum. By implementing the statistical model of spatial analysis (BSA – Bivariate Statistical Analysis) for each characteristic, a series of areas were classified into three classes of favourability (low, medium, high) for the growth of Tuber aestivum. The results were validated indirectly by comparing the overlapping of the areas from the high favourability class with the areas covered with tree species from the Quercus genus and directly, through field research (on the surfaces with maximum favourability), done by specialised truffle seekers. The results were validated with a very high confidence rate for both methods (method 1 - overlapping of approximatively 93%, method 2 - Tuber aestivum was identified on 12 out of 15 test surfaces from the high favourability class).


2019 ◽  
Vol 10 ◽  
Author(s):  
Richard Splivallo ◽  
Maryam Vahdatzadeh ◽  
Jose G. Maciá-Vicente ◽  
Virginie Molinier ◽  
Martina Peter ◽  
...  

2013 ◽  
Vol 47 (2) ◽  
pp. 155-160 ◽  
Author(s):  
Milana Gryndler ◽  
Hana Hršelová

Fifteen different cultivation media were used to isolate bacteria with the idea to obtain taxa specifically associated with ectomycorrhizae of <em>Tuber aestivum</em>. Ectomycorrhizae were collected at the sampling points previously analyzed for bacterial molecular diversity. We isolated 183 bacterial strains and identified them on the basis of the partial sequence of 16S rDNA. Out of these isolates, only 4 corresponded to operational taxonomic units significantly associated with <em>T. aestivum</em> ectomycorrhizae in previous molecular study. Preliminary study of the effect of 12 selected isolates on growth of T. aestivum mycelium showed no stimulation and one isolate induced the damage of hyphae. Different isolation strategy has to be developed to increase the probability of cultivation of potentially important components of <em>T. aestivum</em> mycorrhizosphere.


2014 ◽  
Vol 23 (2) ◽  
pp. 339 ◽  
Author(s):  
Mikel Queralt ◽  
María Lourdes Moraza ◽  
Ana María De Miguel

LWT ◽  
2021 ◽  
Vol 138 ◽  
pp. 110637
Author(s):  
Ivana Beara ◽  
Tatjana Majkić ◽  
Ljilja Torović

Molecules ◽  
2020 ◽  
Vol 25 (9) ◽  
pp. 2217 ◽  
Author(s):  
Staša Hamzić Gregorčič ◽  
Lidija Strojnik ◽  
Doris Potočnik ◽  
Katarina Vogel-Mikuš ◽  
Marta Jagodic ◽  
...  

This study used elemental and stable isotope composition to characterize Slovenian truffles and used multi-variate statistical analysis to classify truffles according to species and geographical origin. Despite the fact that the Slovenian truffles shared some similar characteristics with the samples originating from other countries, differences in the element concentrations suggest that respective truffle species may respond selectively to nutrients from a certain soil type under environmental and soil conditions. Cross-validation resulted in a 77% correct classification rate for determining the geographical origin and a 74% correct classification rate to discriminate between species. The critical parameters for geographical origin discriminations were Sr, Ba, V, Pb, Ni, Cr, Ba/Ca and Sr/Ca ratios, while from stable isotopes δ18O and δ13C values are the most important. The key variables that distinguish T. magnatum from other species are the levels of V and Zn and δ15N values. Tuber aestivum can be separated based on the levels of Ni, Cr, Mn, Mg, As, and Cu. This preliminary study indicates the possibility to differentiate truffles according to their variety and geographical origin and suggests widening the scope to include stable strontium isotopes.


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