Abstract
Aspergillus floridensis and A. trinidadensis spp. nov. are described as novel uniseriate species of Aspergillus section Nigri isolated from air samples. To describe the species we used phenotypes from 7-d Czapek yeast extract agar culture (CYA), creatine agar culture (CREA) and malt extract agar culture (MEA), with support by molecular analysis of the β-tubulin, calmodulin, RNA polymerase II (RPB2), and translation elongation factor-alpha (TEF) gene amplified and sequenced from 56 air isolates and one isolate from almonds belonging to Aspergillus sectionNigri.Aspergillus floridensis is closely related to A. aculeatus, and A. trinidadensis is closely related to A. aculeatinus. Aspergillus brunneoviolaceus (syn. A. fijiensis) and A. uvarum are reported for the first time from the USA and from the indoor air environment. The newly described species do not produce ochratoxin A.
Highlights
Aspergillus section Nigri (Gams et al 1985), commonly known as the black aspergilli, contains many common species in the environment (Klich 2009), and some have been implicated in human and animal diseases (de Hoog et al 2000, Abarca et al 2004, Klich 2009)
Using molecular data and macro- and micro-morphological observations, we discovered and describe here two new species related to A. aculeatus and A. aculeatinus
Observations were made on Czapek yeast extract agar &
Summary
Aspergillus section Nigri (Gams et al 1985), commonly known as the black aspergilli, contains many common species in the environment (Klich 2009), and some have been implicated in human and animal diseases (de Hoog et al 2000, Abarca et al 2004, Klich 2009) They have a worldwide distribution and occur on a large variety of substrates including soil, grains, dairy and forage products, various fruit, vegetables, beans and nuts, cotton textiles and fabrics, and meat products (Raper & Fennell 1965, Pitt & Hocking 2007, 2009). Some strains of black aspergilli DUH RIWHQ PLVLGHQWL¿HG DV A. niger GXH WR WKH GLI¿FXOWLHV RI identifying the species in this group (Samson et al 2007)
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