Two species of Talaromyces new to China

Abstract:

[Background] A survey of the species diversity of culturable fungi in tidal flats of China was carried out, aiming at enriching the fungal species resource in China. [Objective] To report two Talaromyces species producing ascospores new to China.[Methods] A polyphasic taxonomic method, which integrated morphological identification and the phylogeny based on sequences of β-tubulin gene (BenA) and rDNA ITS1-5.8S-ITS2, was employed. [Results] Three teleomorphic Talaromyces species were isolated and identified, namely, T. argentinensis (ZZ2-7-1h=CGMCC 3.16171), T. barcinensis (ZZ2-1-1=CGMCC 3.16172) and T. ucrainicus (JS11-5=CGMCC 3.16173), among which, the former two are new to China. T. argentinensis grows well at 25℃ and is restricted at 37℃, presenting floccose and funiculose colonies with white mycelia mingled with a light pink tint and producing sparse orange-yellow gymnothecia with echinulate ellipsoidal ascospores. T. barcinensis grows well at 25℃ but does not grow at 37℃, presenting velutinous colonies with white and yellow mycelia and bearing sparse, small gymnothecia in buff-yellow color with ellipsoidal, sparsely echinulate ascospores. [Conclusion] In review of the Talaromyces species reported from China hitherto, we confirmed that T. argentinensis and T. barcinensis are two new records of China.