Penicillium gravinicasei, a new species isolated from cave cheese in Apulia, Italy
2018
Anelli, Pamela | Peterson, Steve W. | Haidukowski, Miriam | Logrieco, A. | Moretti, Antonio | Epifani, Filomena | Susca, Antonia
Several species of the genus Penicillium were isolated during a survey of the mycobiota of Apulian cave cheeses ripened in a cave in Gravina di Puglia, Italy. A novel species, Penicillium gravinicasei, is described in Penicillium section Cinnamopurpurea. Its taxonomic novelty was determined using a polyphasic approach, combining phenotypic, molecular (β-tubulin, calmodulin, ITS and DNA dependent RNA polymerase) DNA sequences and mycotoxin production data. Phylogenetic analyses of the RPB2 data showed that isolates of the novel species form a clade most closely related to Penicillium cinnamopurpureum and P. parvulum with high bootstrap support. The fungus did not produce ochratoxin A, citrinin, patulin, sterigmatocystin or aflatoxin B1 on standard agar media. The novel species had a high growth rate on agar media supplemented with 5% NaCl, and could be distinguished from other Penicillium section Cinnamopurpurea species by phenotypic and molecular characteristics.
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