| Authors | Nirenberg 1976 |
|---|---|
| Strain | 18063 |
| Classification | Hypocreales, Nectriaceae, Fusarium |
| Culture collection | BCRC FU31218 |
| Detection frequency | Medium |
| Accession number | LC499623 |
| Figure |  Fig. 1 5-day-old colony on PDA  Fig. 2 Fusarium fujikuroi. a, b. Adelophialides. c–e. Conidiophores, conidiogenous cells and conidia. f. Microconidia. g. Sporulation on CLA. h, i. Sporodochia. j. Macroconidia (Bars= 5 μm, unless otherwise specified) |
| Colonies | Colonies on PDA attaining 51-mm at 25 °C after 5 days, cottony, elevated, azonate, margin entire, white, turning pale salmon from the center with age, reverse salmon with white margin. |
| Sporodochia | Sporodochia occasionally present on CLA, subhyaline, superfical or aerial. |
| Conidiophores | Conidiophores macro- or micronematous, hyaline, simple or repeatedly branched, terminating in 1–3 phialides. |
| Conidiogenous cells | Phialides cylindrical, tapering towards the apex, hyaline, with inconspicuous collarette, often polyphialidic, with 1–3 conidiogenous loci, 15–30 × 1.5–3 µm. Adelophialides often present. |
| Conidia | Macroconidia hyaline, falcate, with a foot-shaped basal cell, 3–5-septate, produced by prostrate phialides; 3-septate conidia 35–43 × 2.5–3.5 µm; 4-septate conidia 44–55 × 3–4 µm; 5-septate conidia 48–59 × 3–4 µm. Microconidia hyaline, obovoid with a truncate base, straight, aseptate, in chains (up to 10) or false head, 5–14 × 1.5–3.5 µm |
| Note | The species is exclusively associated with rice, and causes bakanae disease worldwide. Strain 18063 shares 100% identity in ITS region with the ex-type strain of Fusarium fujikuroi (CBS 221.76, NR_111889). This species is characterized by catenulate obovoid microconidia produced on mono- or polyphialides. The production of sporodochia and macroconidia is highly strain-dependent, and if present, only produced in older cultures (>4 wks). |
| Pathogenicity | This species is an important seed borne disease that causes bakanae disease (Ou, 1985). |
| Specimens examined | Taiwan, Ilan County, rice grains, Aug 2014, Jie-Hao Ou, 14099 Taiwan, Taitung County, rice grains (cultivar Kaohsiung 139), Oct 2014, Jie-Hao Ou, 14146 Taiwan, Taitung County, rice grains (cultivar Taiken 2), Jan 2015, Jie-Hao Ou, 15007 Taiwan, Taichung City, rice grains (cultivar Tainung 71), Feb 2017, Jie-Hao Ou, 17025 Taiwan, Taoyuan City, rice grains, Aug 2018, Jie-Hao Ou, 18063 |
| ITS | ACATTACCGAGTTTACAACTCCCAAACCCCTGTGAACATACCAATTGTTGCCTCGGCGGATCAGCCCGCTCCCGGTAAAACGGGACGGCCCGCCAGAGGACCCCTAAACTCTGTTTCTATATGTAACTTCTGAGTAAAACCATAAATAAATCAAAACTTTCAACAACGGATCTCTTGGTTCTGGCATCGATGAAGAACGCAGCAAAATGCGATAAGTAATGTGAATTGCAGAATTCAGTGAATCATCGAATCTTTGAACGCACATTGCGCCCGCCAGTATTCTGGCGGGCATGCCTGTTCGAGCGTCATTTCAACCCTCAAGCCCCCGGGTTTGGTGTTGGGGATCGGCGAGCCCTTGCGGCAAGCCGGCCCCGAAATCTAGTGGCGGTCTCGCTGCAGCTTCCATTGCGTAGTAGTAAAACCCTCGCAACTGGTACGCGGCGCGGCCAAGCCGTTAAACCCCCAACTTCTGAATGTTGACCTCGGATCAGGTAGGAATACCCGCTGAACTTAA |
| EF1a | AGACTCACATCAACGTCGTCGTCATCGGCCACGTCGACTCTGGCAAGTCGACCACTGTGAGTACTACCCTCGACGATGAGCTTATCTGTCATCGTGATCCTGACCAAGATCTGGCGGGGTATACCTCAGAAGACAATATGCTGACATCGCTTCACAGACCGGTCACTTGATCTACCAGTGCGGTGGTATCGACAAGCGAACCATCGAGAAGTTCGAGAAGGTTAGTCACTTTCCCTTCGATCGCGCGTCCTTTGCCCACCGATTTCCCTTACGATTCGAAACGTGCCTGCTACCCCGCTCGAGACCAAAAATTTTGCGATATGACCGTAATTTTTTTTGGTGGGGCATTTACCCCGCCACTCGAGTGATGGGCGCGTTTTGCCCTTTCCTGTCCACAACCTCAATGAGCGCATTGTCACGTGTCAAACTAACCATTCGACAATAGGAAGCCGCTGAGCTCGGTAAGGGTTCCTTCAAGTACGCCTGGGTTCTTGACAAGCTCAAGGCCGAGCGTGAGCGTGGTATCACCATCGATATTGCTCTCTGGAAGTTCGAGACTCCTCGCTACTATGTCACCGTCATTGGTATGTCGTCGCTCATGCTTCATTCTACTTATTCATACTAACATATCATTCAGACGCTCCCGGTCACCGTGATTTCATCAAGAACATGATCACTGGTACTTCCCAGGCCGA |