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ARS Home » Midwest Area » Peoria, Illinois » National Center for Agricultural Utilization Research » Mycotoxin Prevention and Applied Microbiology Research » Research » Publications at this Location » Publication #335437

Research Project: Genomic and Metabolomic Approaches for Detection and Control of Fusarium, Fumonisins and Other Mycotoxins on Corn

Location: Mycotoxin Prevention and Applied Microbiology Research

Title: New species of Talaromyces isolated from maize, indoor air, and other substrates

item Peterson, Stephen
item JURJEVIC, ZELJKO - Emsl Analytical, Inc

Submitted to: Mycologia
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 8/17/2017
Publication Date: 1/12/2018
Citation: Peterson, S.W., Jurjevic, Z. 2018. New species of Talaromyces isolated from maize, indoor air, and other substrates. Mycologia. 109(4):537-556.

Interpretive Summary: Prior to our study there were 14 species or types of molds in this section of the large genus Talaromyces. We have identified 10 additional new species from maize and indoor air, and we devised two new schemes for the identification of each of the species. One scheme is based on the appearance of the molds and the other is based on analysis of DNA sequences. This work will be of interest to plant pathologists, industries providing mold identification services, and academic mycologists.

Technical Abstract: Talaromyces strains isolated from maize seeds and the built environment were examined taxonomically because they could not be identified as previously described species. Using phenotypic analysis, DNA sequencing, and phylogenetic and concordance analyses, the authors discovered and described 10 new species in sect. Islandici and 1 new species in sect. Subinflati. Taxonomic novelties in sect. Islandici are Talaromyces delawarensis, T. herodensis, T. juglandicola, T. kilbournensis, T. novojersensis, T. ricevillensis, T. rogersiae, T. siglerae, T. subtropicalis, and T. tiftonensis, and the species from sect. Subinflata is T. tzapotlensis. The isolate of T. siglerae is unusual in Talaromyces because it produced a Sagenomella-like anamorph, but phylogenetic analysis placed it in Talaromyces. Talaromyces rotundus is known from a few isolates, but searches with internal transcribed spacer (ITS) sequences in GenBank revealed that it is commonly endolichenous with Lasallia hispanica. Talaromyces wortmannii also has a role as an endophyte of the aquatic plant Persicaria amphibia, based on ITS sequence records from GenBank.