Fusarium ipomoeae M. M. Wang, Q. Chen & L. Cai
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2026
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| author | He, Jiao Li, Ning Li, De-Wei Guo, Ying Chen, Shan-Shan Sun, Feng Wang, Jun-Wei Huang, Lin |
| author_facet | He, Jiao Li, Ning Li, De-Wei Guo, Ying Chen, Shan-Shan Sun, Feng Wang, Jun-Wei Huang, Lin |
| contents | <p><i>Fusarium ipomoeae</i> M. M. Wang, Q. Chen & L. Cai, Persoonia 43: 83 (2019)</p><p><b>Host / distribution.</b></p><p>From <i>T.</i> hybrid ‘ Zhongshanshan’ in Jinan State-owned Beijiao Forest Farm, Jinan City, Shandong Province, China.</p><p><b>Description.</b></p><p>Sexual state not observed. Asexual state: Sporulation abundant from sporodochia, rarely from conidiophores formed directly on the substrate mycelium. Conidiophores in the aerial mycelium absent. Sporodochia bright orange-coloured, formed abundantly on <i>T.</i> hybrid ‘ Zhongshanshan’ stem. Conidiophores in sporodochia (13.1 –) 14.2–19.2 (– 22.5) μm, (mean ± SD = 16.7 ± 2.5 μm, n = 30), irregularly branched and densely packed, bearing apical whorls of 1–2 phialides; sporodochial phialides subulate to subcylindrical, smooth, thin-walled, (5.1 –) 6.3–11 (– 13.6) × (1.7 –) 2.4–3.6 (– 4.6) μm, (mean ± SD = 8.7 ± 2.3 × 3 ± 0.6 μm, n = 30). Sporodochial macroconidia colourless, falcate, with a markedly slender and nearly filiform, acicular to rat-tail-like apical cell that is frequently hooked or curved; basal cell pedicellate and distinctly stalked to inversely conical, tapering towards the point of attachment; 3–5 - septate, smooth, thin-walled, constricted at the median septa, (27 –) 32.1–46.5 (– 53.8) × (3.5 –) 3.9–5 (– 5.3) μm, (mean ± SD = 39.3 ± 7.2 × 4.5 ± 0.5 μm, n = 30). Microconidia and chlamydospores absent.</p><p><b>Culture characteristics.</b></p><p>Colonies on PDA growing in the dark with an average growth rate of 9.5 mm / d at 25 ° C. Aerial mycelia dense, colony margin regular, surface white; the reverse is bright yellow. Odour absent. Colonies on OMA incubated at 25 ° C in the dark was regular, aerial mycelium abundant, loose to densely floccose, covering the OMA in five days. Colony in reverse was white without pigmentation. Colonies on SNA incubated at 25 ° C in the dark growing at 10.2 mm / d. Colony surface pure white, aerial mycelium scant, colony margin erose. Reverse pure white, without diffusible pigments.</p><p><b>Materials examined.</b></p><p>China • Shandong Province, Jinan City, Jinan State-owned Beijiao Forest Farm, 36°46'03"N, 116°51'46"E, isolated from branches of <i>Taxodium</i> hybrid ‘ Zhongshanshan’, August 2024, Lin Huang, isolates: SG 2-23, SG 2-24, SG 2-36.</p><p><b>Notes.</b></p><p>Phylogenetic analyses, based on multi-locus sequence data (<i>RPB 1</i>, <i>RPB 2</i> and <i>TEF- 1 α</i>), revealed that the SG 2-36 isolate in this study clustered within the same clade as <i>F. ipomoeae</i> CGMCC 3.19496 (ex-type) (Fig. 4). Morphologically, the 3–5 - septate macroconidia of isolate SG 2-36 (32.1–46.5 × 3.9–5.0 μm) exhibited close similarity to those of the ex-type strain (CGMCC 3.19496) of <i>F. ipomoeae</i> (26.5–57 × 2–5 μm) as described by Wang et al. (2019). <i>Fusarium ipomoeae</i> was initially isolated from the leaves of <i>Ipomoea aquatica</i> in Fujian Province, China (Wang et al. 2019). However, in the present study, <i>F. ipomoeae</i> is reported for the first time as a pathogenic species causing dieback in <i>T.</i> hybrid ‘ Zhongshanshan’.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_19437810 |
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| publishDate | 2026 |
| publisher | Zenodo |
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| spellingShingle | Fusarium ipomoeae M. M. Wang, Q. Chen & L. Cai He, Jiao Li, Ning Li, De-Wei Guo, Ying Chen, Shan-Shan Sun, Feng Wang, Jun-Wei Huang, Lin Biodiversity Taxonomy Fungi Ascomycota Sordariomycetes Hypocreales Nectriaceae Fusarium Fusarium ipomoeae <p><i>Fusarium ipomoeae</i> M. M. Wang, Q. Chen & L. Cai, Persoonia 43: 83 (2019)</p><p><b>Host / distribution.</b></p><p>From <i>T.</i> hybrid ‘ Zhongshanshan’ in Jinan State-owned Beijiao Forest Farm, Jinan City, Shandong Province, China.</p><p><b>Description.</b></p><p>Sexual state not observed. Asexual state: Sporulation abundant from sporodochia, rarely from conidiophores formed directly on the substrate mycelium. Conidiophores in the aerial mycelium absent. Sporodochia bright orange-coloured, formed abundantly on <i>T.</i> hybrid ‘ Zhongshanshan’ stem. Conidiophores in sporodochia (13.1 –) 14.2–19.2 (– 22.5) μm, (mean ± SD = 16.7 ± 2.5 μm, n = 30), irregularly branched and densely packed, bearing apical whorls of 1–2 phialides; sporodochial phialides subulate to subcylindrical, smooth, thin-walled, (5.1 –) 6.3–11 (– 13.6) × (1.7 –) 2.4–3.6 (– 4.6) μm, (mean ± SD = 8.7 ± 2.3 × 3 ± 0.6 μm, n = 30). Sporodochial macroconidia colourless, falcate, with a markedly slender and nearly filiform, acicular to rat-tail-like apical cell that is frequently hooked or curved; basal cell pedicellate and distinctly stalked to inversely conical, tapering towards the point of attachment; 3–5 - septate, smooth, thin-walled, constricted at the median septa, (27 –) 32.1–46.5 (– 53.8) × (3.5 –) 3.9–5 (– 5.3) μm, (mean ± SD = 39.3 ± 7.2 × 4.5 ± 0.5 μm, n = 30). Microconidia and chlamydospores absent.</p><p><b>Culture characteristics.</b></p><p>Colonies on PDA growing in the dark with an average growth rate of 9.5 mm / d at 25 ° C. Aerial mycelia dense, colony margin regular, surface white; the reverse is bright yellow. Odour absent. Colonies on OMA incubated at 25 ° C in the dark was regular, aerial mycelium abundant, loose to densely floccose, covering the OMA in five days. Colony in reverse was white without pigmentation. Colonies on SNA incubated at 25 ° C in the dark growing at 10.2 mm / d. Colony surface pure white, aerial mycelium scant, colony margin erose. Reverse pure white, without diffusible pigments.</p><p><b>Materials examined.</b></p><p>China • Shandong Province, Jinan City, Jinan State-owned Beijiao Forest Farm, 36°46'03"N, 116°51'46"E, isolated from branches of <i>Taxodium</i> hybrid ‘ Zhongshanshan’, August 2024, Lin Huang, isolates: SG 2-23, SG 2-24, SG 2-36.</p><p><b>Notes.</b></p><p>Phylogenetic analyses, based on multi-locus sequence data (<i>RPB 1</i>, <i>RPB 2</i> and <i>TEF- 1 α</i>), revealed that the SG 2-36 isolate in this study clustered within the same clade as <i>F. ipomoeae</i> CGMCC 3.19496 (ex-type) (Fig. 4). Morphologically, the 3–5 - septate macroconidia of isolate SG 2-36 (32.1–46.5 × 3.9–5.0 μm) exhibited close similarity to those of the ex-type strain (CGMCC 3.19496) of <i>F. ipomoeae</i> (26.5–57 × 2–5 μm) as described by Wang et al. (2019). <i>Fusarium ipomoeae</i> was initially isolated from the leaves of <i>Ipomoea aquatica</i> in Fujian Province, China (Wang et al. 2019). However, in the present study, <i>F. ipomoeae</i> is reported for the first time as a pathogenic species causing dieback in <i>T.</i> hybrid ‘ Zhongshanshan’.</p> |
| title | Fusarium ipomoeae M. M. Wang, Q. Chen & L. Cai |
| topic | Biodiversity Taxonomy Fungi Ascomycota Sordariomycetes Hypocreales Nectriaceae Fusarium Fusarium ipomoeae |
| url | https://doi.org/10.5281/zenodo.19437810 |