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Tuber mesentericum
Tuber mesentericum
Tuber mesentericum ascocarps (credit: Francis Martin).

In the “1KFG: Deep Sequencing of Ecologically-relevant Dikarya” project (CSP1974), we aim to sequence additional sampling of genomic diversity within keystone lineages of plant-interacting fungi and saprophytic fungi that are of special ecological importance for understanding terrestrial ecosystems. In addition, comparative genome analysis with saprotrophic, mycorrhizal and pathogenic fungi will provide new insights into the specific and conserved adaptations associated with each fungal lifestyle.

Tuber mesentericum Vittad

This black truffle belongs to the Tuberaceae (Pezizales, Pezizomycetes) in the Aestivum clade of the Tuber genus. This ectomycorrhizal fungus establishes a mutualistic symbiosis with various host tree species, such as oaks, beech, and hazel. The so-called “black truffle of Bagnoli Irpino” or “truffe de Meuse” has a strong and pungent phenolic-like aroma which is only locally appreciated in southern Italy and in north eastern France. This truffle is well-distributed in Europe; it can be collected in summer, but the peak of production is between the end of autumn and the beginning of winter. The many overlapping morphological features of the ascocarps make it possible to refer to T. mesentericum and T. aestivum as a “species-complex”. Comparison of the T. mesentericum and T. aestivum genomes will provide new insights into the evolution of truffles, including the pathways involved in the biosynthesis of volatile organic compounds.

Researchers who wish to publish analyses using data from unpublished CSP genomes are respectfully required to contact the PI and JGI to avoid potential conflicts on data use and coordinate other publications with the CSP master paper(s).