Journal
MYCOLOGIA
Volume 101, Issue 3, Pages 423-429Publisher
TAYLOR & FRANCIS INC
DOI: 10.3852/09-011
Keywords
aflatoxin; Aspergillus alliaceus; Aspergillus parasiticus; heterothallism; Petromyces alliaceus; Petromyces flavus; Petromyces parasitucus; Trichocomaceae
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Funding
- National Research Initiative of the USDA Cooperative State Research, Education and Extension Service [2005-35319-16126]
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Aspergillus flavus is the major producer Of carcinogenic aflatoxins in crops world vide and is also an important opportunistic human pathogen in aspergillosis. The sexual state of this heterothallic fungus is described from crosses between strains of the opposite mating type. Sexual reproduction occurred between sexually compatible strains belonging to different vegetative compatibility groups. Multiple, indehiscent ascocarps containing asci and ascospores formed within the pseudoparenchymatous matrix of stromata, which places the fungus in genus Petromyces. The teleomorph of P. flavus could not be distinguished from that of P. parasiticus (anamorph = A. parasiticus), another aflatoxin-producing Species, based on morphology of the sexual structures. The two species can be separated by anamorph morphology, mycotoxin profile and molecular characters.
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