Fusarium falciforme
| Authors |
(Carrión) Summerb. & Schroers 2002 |
| Strain |
19006 |
| Classification |
Hypocreales, Nectriaceae, Fusarium |
| Culture collection |
processing |
| Detection frequency |
Low |
| Figure |
 Fig. 1 5-day-old colony on PDA  Fig. 2 Fusarium falciforme. a, b. Conidiophores and conidia. c, d. Chlamydospores. e, f. Conidia. g. Sporulation on OA. h. Appressorium-like structures formed by germinating conidia (Bars= 5 μm, unless otherwise specified) |
| Colonies |
Colonies on PDA attaining 50-mm at 25 °C after 5 days, cottony, elevated, azonate, margin entire, white, turning pale yellow from the center with age, reverse pale yellow. |
| Sporodochia |
Sporodochia not observed on PDA, CLA, OA, WA. |
| Conidiophores |
Conidiophores macronematous, erect, hyaline, mostly simple, 1–3 cells (mostly 1). |
| Conidiogenous cells |
Conidiogenous cells phialidic, cylindrical, hyaline, often with collarette, 35–70 × 2–3 µm. |
| Conidia |
Conidia hyaline, ellipsoidal to obovoid, 0–3-septate; aseptate conidia straight, 7–11 × 2.5–4 µm; 1-septate conidia straight or slightly curved, 11–19 × 4–5 µm; 2-septate conidia occasionally found, slightly curved, 20–27 × 4.5–6 µm; 3-septate conidia abundant, slightly curved, sometimes falcate, 24–33 × 5–6 µm. |
| Appressoria |
Appressoria-like structure can be observed when conidia germinated on the surface of polystyrene petri dish. |
| Chlamydospores |
Chlamydospores abundant on WA, OA, SNA, submerge or aerial, globose to subglobose, mostly terminal, in chain of 2–3, 7–10 µm in diam; aerial chlamydospores often warted. |
| Note |
This species is known for be pathogenic to sea turtle eggs (Sarmiento-Ramírez et al., 2014). It is interesting for this species happening on rice grains. This species have been reported to be pathogenic on certain plants (Duarte et al., 2019; Vega-Gutiérrez et al., 2019). The presence of sporodochia and macroconidia of this species has been reported to be highly strain dependent (Sandoval-Denis et al., 2019; Sandoval-Denis & Crous, 2018). Strain 19006 did not produced sporodochia. It produced 0–3-septate conidia on aerial simple conidiophores (Fig. 2f). The septate conidia were equivalent to macroconidia, which were reported to only occur on sporodochia (Sandoval-Denis & Crous, 2018). |
| Pathogenicity |
Unknown |
| Specimens examined |
Taiwan, Changhua County, rice grains (cultivar Tainan 11), Jun 2019, Jie-Hao Ou, 19006 |
| ITS |
GACGCGGAGGGACATTACCGAGTTATACAACTCATCAACCCTGTGAACATACCTATAACGTTGCCTCGGCGGGAACAGACGGCCCCGTAACACGGGCCGCCCCCGCCAGAGGACCCCCTAACTCTGTTTCTATAATGTTTCTTCTGAGTAAACAAGCAAATAAATTAAAACTTTCAACAACGGATCTCTTGGCTCTGGCATCGATGAAGAACGCAGCGAAATGCGATAAGTAATGTGAATTGCAGAATTCAGTGAATCATCGAATCTTTGAACGCACATTGCGCCCGCCAGTATTCTGGCGGGCATGCCTGTTCGAGCGTCATTACAACCCTCAGGCCCCCGGGCCTGGCGTTGGGGATCGGCGGAAGCCCCCTGCGGGCACAACGCCGTCCCCCAAATACAGTGGCGGTCCCGCCGCAGCTTCCATTGCGTAGTAGCTAACACCTCGCAACTGGAGAGCGGCGCGGCCACGCCGTAAAACACCCAACTTCTGAATGTTGACCTCGAATCAGGTAGGAATACCCGCTGAACTTAA |
| EF1a |
CGTCGACTCTGGCAAGTCGACCACCGTAAGTCAAACCCTCATCGCGATCTGCTTATCTCGGGTCGTGGAACCCCGCCTGGCATCTCGGGCGGGGTATTCATCAGTCACTTCATGCTGACAATCATCTACAGACCGGTCACTTGATCTACCAGTGCGGTGGTATCGACAAGCGAACCATCGAGAAGTTCGAGAAGGTTGGTGACATCTCCCCCGATCGCGCCTTGCTATTCCACAACGAATTCCCTCCCTCGCGATACGCTCTGCGCCCGCTTCTCCCGAGTCCCAAAATTTTTGCGGTCCGACCGTAATTTTTTTGGTGGGGCATTTACCCCGCCACTCGGGCGACGTTGGACAAAGCCTTGATCCCTGCACACAAAAACACCAAACCCTCTTGGCGCGCATCATCACGTGGTTCACAACAGACGCTAACCGGTCCAACAATAGGAAGCCGCTGAGCTCGGTAAGGGTTCCTTCAAGTACGCCTGGGTCCTTGACAAGCTCAAGGCCGAGCGTGAGCGTGGTATCACCATCGACATTGCCCTCTGGAAGTTCGAGACTCCCCGCTACTATGTCACCGTCATTGGTATGTTG |