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Abstract
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| The natural harvesting and cultivation of Tuber melanosporum (black truffle of Perigord) has spread throughout many countries in recent decades. Other black truffles such as T. aestivum, T. brumale, and T. mesentericum cause damage to T. melanosporum exploitation. These truffle species have been found to be very much present in the mycorrhizal contamination of natural T. melanosporum burns. Nevertheless, different studies have been unable to determine whether the aggressiveness of T. melanosporum and its resistance to this contamination pressure are qualities of the environment or of the soil. Moreover, the biological and physical-chemical conditions causing T. melanosporum burns have yet to be clarified. The aim of this study is therefore to establish the relationship between the carpophore presence of Tuber species (T. melanosporum as compared with T. aestivum and T. mesentericum) and the concentration of soil variables. Principal component analysis (PCA) and analyses of variance (ANOVAs) show that active carbonate content is the variable that accounts for the greatest percentage of occupancy in the T. melanosporum habitat. A high concentration of active carbonate accounts for up 43% of T. melanosporum carpophore production and 51% of the variance in the size of T. melanosporum burns. We propose that active carbonate is a major factor in the fruiting and aggressiveness of T. melanosporum versus T. aestivum and T. mesentericum. Moreover, the development of the T. melanosporum burn increases the formation of active carbonate, suggesting a feedback process. The results obtained could have applications in natural harvesting and truffle culture. | |
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International
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Si |
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JCR
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Si |
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Title
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ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE |
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ISBN
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0906-4710 |
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Impact factor JCR
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0,462 |
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Impact info
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Volume
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58 |
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10.1080/09064710701743286 |
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Journal number
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4 |
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From page
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322 |
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To page
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329 |
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Month
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DICIEMBRE |
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Ranking
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