| Authors | (Drechsler) K.J. Leonard & Suggs 1974 |
|---|---|
| Strain | 12009 |
| Classification | Pleosporales, Pleosporaceae, Exserohilum |
| Culture collection | BCRC FU30163 |
| Detection frequency | High |
| Accession number | LC494373 |
| Figure |  Fig. 1 5-day-old colony on PDA  Fig. 2 Exserohilum rostratum. a. Conidia. b, c. Conidiophores and conidia. d. Hyphopodia (Bars= 5 μm, unless otherwise specified) |
| Colonies | Colonies on PDA attaining 74-, 85-, 50-mm at 24 °C, 28 °C and 37 °C after 5 days, margin undulate, floccose, reverse black with white margins. |
| Conidiophores | Conidiophores macronematous, golden brown to pale brown, simple or branched, up to 400 µm, 4.5–6 µm wide, occasionally constricted at the base. |
| Conidiogenous cells | Conidiogenous cells integrated, terminal or intercalary, geniculate, sympodial, with darkened and thickened conidial scars. |
| Conidia | Conidia straight or slightly curved, ellipsoidal, obclavate or cylindrical, with distinctly protuberant hilum, olivaceous to pale brown, 3–15 distoseptate, the first and the last septa often darker than the others, 30–185 × 10–25 µm. |
| Appressoria | Hyphopodia often formed in contact with the bottom of the polystyrene petri dish, globose, dark brown, 10–15 µm in diam. |
| Note | This species is commonly found in soils and on grasses. It is pathogenic to some grasses, and occasionally infects humans opportunistically. |
| Pathogenicity | This species infects rice and many other monocots and causes leaf spots (Sivanesan, 1987). |
| Specimens examined | Taiwan, Tainan City, rice grains (cultivar Tainan 11), Sep 2012, Jie-Hao Ou, 12009 Taiwan, Tainan City, rice grains (cultivar Tainan 11), Dec 2012, Jie-Hao Ou, 12054 Taiwan, Tainan City, rice grains (cultivar Tainan 11), Jul 2013, Jie-Hao Ou, 13018 Taiwan, Kaohsiung City, rice grains, Jan 2014, Jie-Hao Ou, 14021 Taiwan, Taichung City, rice grains, Mar 2014, Jie-Hao Ou, 14044 Taiwan, Yunlin County, rice grains, Mar 2014, Jie-Hao Ou, 14052 Taiwan, Changhua County, rice grains, May 2014, Jie-Hao Ou, 14063 Taiwan, Pingtung County, rice grains (cultivar Taiken 9), Aug 2014, Jie-Hao Ou, 14093 Taiwan, Taitung County, rice grains (cultivar Taitung 30), Sep 2014, Jie-Hao Ou, 14117 Taiwan, Miaoli County, rice grains (cultivar Miaoli 2), Dec 2014, Jie-Hao Ou, 14183 |
| ITS | GGAAGTAAAAGTCGTAACAAGGTCTCCGTAGGTGAACCTGCGGAGGGATCATTACACAACAAAAATATGAGGGTGTGGTTTGCTGGCAACAGCGTCCGCCCCAAGTATTTTTCACCCATGTCTTTTGCGCACTTTTTGTTTCCTGGGCGAGTTCGCTCGCCACCAGGACCCAACCATAAACCTTTTTTTATGCAGTTGCAATCAGCGTCAGTATAATAATTCAATTTATTAAAACTTTCAACAACGGATCTCTTGGTTCTGGCATCGATGAAGAACGCAGCGAAATGCGATACGTAGTGTGAATTGCAGAATTCAGTGAATCATCGAATCTTTGAACGCACATTGCGCCCTTTGGTATTCCAAAGGGCATGCCTGTTCGAGCGTCATTTGTACCCTCAAGCTTTGCTTGGTGTTGGGCGTCTTTTTGTCTCTCCCCTTGTTGGGGGAGACTCGCCTTAAAACGATTGGCAGCCGACCTACTGGTTTTCGGAGCGCAGCACAAATTTGCGCCTTCCAATCCACGGGGCGGCATCCAGCAAGCCTTTGTTTTCTATAACAAATCCACATTTTGACCTCGGATCAGGTAGGGATACCCGCTGAACTTAA |