Aspergillus flavus

Authors Link 1809
Strain 13049
Classification Eurotiales, Aspergillaceae, Aspergillus
Culture collection BCRC FU30219
Detection frequency Medium
Accession number LC494361
Figure Fig. 1 5-day-old colony on PDA Fig. 2 Aspergillus flavus. a–d. Conidiophores and conidia. e. Conidia (Bars= 5 μm, unless otherwise specified)
Colonies Colonies grow well on PDA at 37°C, attaining 62, 80, 49 mm at 24 °C, 28 °C and 37 °C after 5 days, margins entire, yellow-green, floccose, zonated, reverse white to yellowish.
Conidiophores Conidiophores, straight, hyaline, rough-walled, with swollen apex, up to 1 mm long, 8–15 µm wide.
Conidiogenous cells Conidiogenous cells phialidic, ampulliform, hyaline to pale brown, mostly uniseriate, 8–10 × 3.5–5 µm.
Conidia Conidia hyaline, golden brown,when mature, radial orientation, catenate, often more than 70 conidia in chain, globose to ellipsoidal, smooth, 3–6 µm in diameter.
Note During this study, this species was found frequentlyon stored rice seeds and occasionally on fresh harvested rice seeds.
Pathogenicity This species is considered as a saprophytic fungus and only occasionally causes grain discoloration in storage (Ou, 1985). Some strains of this species have the ability to produce aflatoxin. According to different investigations, about 50-70% of the strains have the ability to produce aflatoxin (Chhotaray et al., 2015; Guimarães et al., 2010).
Specimens examined Taiwan, Chiayi County, rice grains (cultivar Tainan 11), Sep 2013, Jie-Hao Ou, 13049
Taiwan, Tainan City, rice grains (cultivar Tainan 11), Jul 2014, Jie-Hao Ou, 14081
Taiwan, Taichung City, rice grains (cultivar Taichung 65), Feb 2015, Jie-Hao Ou, 15010
ITS GTGTAGGGTTCCTAGCGAGCCCAACCTCCCACCCGTGTTTACTGTACCTTAGTTGCTTCGGCGGGCCCGCCATTCATGGCCGCCGGGGGCTCTCAGCCCCGGGCCCGCGCCCGCCGGAGACACCACGAACTCTGTCTGATCTAGTGAAGTCTGAGTTGATTGTATCGCAATCAGTTAAAACTTTCAACAATGGATCTCTTGGTTCCGGCATCGATGAAGAACGCAGCGAAATGCGATAACTAGTGTGAATTGCAGAATTCCGTGAATCATCGAGTCTTTGAACGCACATTGCGCCCCCTGGTATTCCGGGGGGCATGCCTGTCCGAGCGTCATTGCTGCCCATCAAGCACGGCTTGTGTGTTGGGTCGTCGTCCCCTCTCCGGGGGGGACGGGCCCCAAAGGCAGCGGCGGCACCGCGTCCGATCCTCGAGCGTATGGGGCTTTGTCACCCGCTCTGTAGGCCCGGCCGGCGCTTGCCGAACGCAAATCAATCTTTTTCCAGGTTGACCTCGGATCAGGTAGGGATACCCGCTGAACTTAA