Coniochaeta velutina
| Authors |
(Fuckel) Cooke 1887 |
| Strain |
13024 |
| Classification |
Coniochaetales, Coniochaetaceae, Coniochaeta |
| Culture collection |
BCRC FU30210 |
| Detection frequency |
Low |
| Accession number |
LC494366 |
| Figure |
 Fig. 1 5-day-old colony on PDA  Fig. 2 Coniochaeta velutina. a, c, d. Asci and ascospore with longitudinal germ slits (black arrow). b. Ascocarps. e. Reduced conidiogenous cells. f. Conidia. g. Discrete conidiogenous cells (phialides) (Bars= 5 μm, unless otherwise specified) |
| Colonies |
Colonies on PDA attaining 15-, 17-, 2-mm at 24 °C, 28°C and 37°C after 5 days, margins, entire, floccose, grey, reverse orange, turn dark brown aftter a few week. |
| Conidiophores |
Conidiophores absent or poorly differentiated. |
| Conidiogenous cells |
Conidiogenous cells phialidic, grey to pale brown, adelophalides 2–6 × 1.5–3 μm, collarettes 0.7–1.5 × 1.5–2 μm, discrete phialides swollen near bases, grey to pale brown, 7–10 μm long, 3–4 μm at the widest part, 1.5–2.5 μm near the apex, collarettes cylindrical, 1–1.5 × 1.5–2 μm |
| Conidia |
Conidia ellipsoid to ovoid, with the ends slightly truncate, hyaline, aseptate, 3–5 × 1.5–2.5 μm. |
| Ascomata |
Perithecia form in culture, mostly superficial, with dark brown setae up to 50 μm long, subglobose with short neck, up to 200 μm in diameter. |
| Asci |
Asci unitunicate, cylindrical, stalked, 8-spored, 35–50 × 10–15 μm. |
| Ascospores |
Ascospores ellipsoidal, grey to golden brown, often 2-guttulate, 6–7 × 4–5 μm. |
| Pathogenicity |
Unknown. This species has not been previously found on rice. It has been reported as a weak pathogen on sugar maple (Acer saccharunz) (Basham et al., 1969). |
| Specimens examined |
Taiwan, Taitung County, rice grains (cultivar Kaohsiung 139), Aug 2013, Jie-Hao Ou, 13024 |
| ITS |
CGCCGGAGGTACGAAACTCTGTATTATAGTGGCATCTCTGAGTAAAAAACAAATAAGTTAAAACTTTCAACAACGGATCTCTTGGTTCTGGCATCGATGAAGAACGCAGCGAAATGCGATAAGTAATGTGAATTGCAGAATTCAGTGAATCATCGAATCTTTGAACGCACATTGCGCCCGCTAGTACTCTAGCGGGCATGCCTGTTCGAGCGTCATTTCAACCCTCAAGCCCTGCTTGGTGTTGGGGCCCTACGGCTGCCGTAGGCCCTGAAAGGAAGTGGCGGGCTCGCTACAACTCCGAGCGTAGTAATTCATTATCTCGCTAGGGACGTTGCGGCGCGCTCCTGCCGTTAAAGACCATCTTTAACTCAAGGTTGACCTCGGATCAGGTAGGAATACCCGCTGAACTTAA |