| Authors | (Mitra) Shoemaker 1959 |
|---|---|
| Strain | 16042 |
| Classification | Pleosporales, Pleosporaceae, Bipolaris |
| Culture collection | BCRC FU31419 |
| Detection frequency | Low |
| Figure |  Fig. 1 5-day-old colony on PDA  Fig. 2 Bipolaris bicolor. a–c. Conidiophores and conidia. d. Conidia e. Sporulation on OA (Bars= 5 μm, unless otherwise specified) |
| Colonies | Colonies on PDA attaining 52-mm diam. after 5 days at 25 °C, cottony, azonate, margin entire, reverse dark olivaceous with white margins. |
| Conidiophores | Conidiophores macronematous, multiseptate, mostly simple, straight, flexuous near conidiogenous loci, pale brown to golden brown, up to 300 µm in length, 5–9 µm in width. |
| Conidiogenous cells | Conidiogenous cells integrated, terminal or intercalary, geniculate, sympodial. |
| Conidia | Conidia fusiform , straight or slightly curved, olivaceous brown to golden brown, with distinct (2–)5–9-distoseptate, basal septum and hilum often slightly thickened, 45–80 × 15–18 µm. |
| Note | This species is closely related to Bipolaris oryzae (ITS similarity: 542/558(97%)), but can be distinguished from B. oryzae by having shorter conidia with thickened basal septa. |
| Pathogenicity | Reported to cause leaf brown spots in rice in rare cases. (Motlagh & Kaviani, 2008) |
| Specimens examined | Taiwan, Tainan City, rice grains (cultivar Tainan 11), Jul 2014, Jie-Hao Ou, 14086 Taiwan, Taitung County, rice grains (cultivar Taitung 16), Nov 2016, Jie-Hao Ou, 16042 |
| ITS | TCAAAGAACTTCTGTTTAAGCCGCGATCATTACACAACAAAATATGAAGGCCTTGGCTTCACGGCCGGCTGAAATATTTTTTTTCACCCATGTCTTTTGCGCACTTGTTGTTTCCTGGGCGGGTTCGCCCGCCACCAGGACCAAACCATAAACCTTTTTTTTTTTATGCAGTTGCAATCAGCGTCAGTAAAAACAATGTAATAATTTACAACTTTCAACAACGGATCTCTTGGTTCTGGCATCGATGAAGAACGCAGCGAAATGCGATACGTAGTGTGAATTGCAGAATTCAGTGAATCATCGAATCTTTGAACGCACATTGCGCCCTTTGGTATTCCAAAGGGCATGCCTGTTCGAGCGTCATTTGTACCTTCAAGCTTTGCTTGGTGTTGGGCGTTTTTTTGTCTCCCTCTTTCTGGGAGACTCGCCTTAAAACGATTGGCAGCCGGCCTACTGGTTTCGGAGCGCAGCACATAATTTGCACTTTGTATCAGGAGAAAAGGACGGTAATCCATCAAGACTCTACAATTTTTAACTTTTGACCTCGGATCAGGTAGGGATACCCGCTGAACTTAA |