Curvularia herbicola Lin Huang, Jia-Mei Zhao & D. W. Li, 2025
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publication ID |
https://doi.org/10.3897/mycokeys.125.168614 |
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DOI |
https://doi.org/10.5281/zenodo.17672779 |
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persistent identifier |
https://treatment.plazi.org/id/5F8031E7-0897-50C0-8841-B8B158F93DD8 |
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treatment provided by |
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scientific name |
Curvularia herbicola Lin Huang, Jia-Mei Zhao & D. W. Li |
| status |
sp. nov. |
Curvularia herbicola Lin Huang, Jia-Mei Zhao & D. W. Li sp. nov.
Fig. 4 View Figure 4
Holotype.
China • Jiangsu Province, Nanjing, Jianye District, Xuanwu District , Xuanwu Lake Park , 32 ° 06 ' 79 " N, 118 ° 80 ' 83 " E, isolated from leaf blight of Cynodon dactylon , 21 May 2024. Holotype : CFCC 72734 is a living specimen being maintained via lyophilisation at the China Forestry Culture Collection Center ( CFCC). Ex-type ( XW 1-15 ) is maintained at the Forest Pathology Laboratory, Nanjing Forestry University.
Etymology.
The name, Latin nouns for “ grass ”, herba + Latin term - cola (inhabitant or dweller) refers to grass, which this species inhabits.
Description.
Asexual morph on PDA: Hyphae 2–4 μm wide, subhyaline to pale brown, verruculose to verrucose, septate, branched. Conidiophores mononematous, semi-to macronematous, septate, arising singly or frequently in groups, straight to flexuous, geniculate towards the apex, unbranched, smooth to verruculose, yellowish-brown to brown, (50 –) 66–136 × 2–4 μm (mean ± SD = 101 ± 35 × 3 ± 1 μm). Conidiogenous cells mono- to polytretic, proliferating sympodially, integrated, terminal or intercalary, conspicuously swollen, brown to dark brown, pale brown initially, becoming distinctly darker, with darkened scars, smooth, (5 –) 7–11 (– 14) × 5–7 (– 10) μm (mean ± SD = 9 ± 2 × 6 ± 1 μm). Conidia straight, elliptical, smooth, 2–4 - euseptate, with strongly thickened and swollen, septa (16 –) 19–25 (– 29) × (8 –) 9–11 μm (mean ± SD = 22 ± 3 × 10 ± 1 μm); germination mono- or bipolar. Hila 2–3 μm wide, conspicuous protuberant, thickened and darkened. Chlamydospores and microconidiation not observed. Sexual morph: Undetermined.
Culture characteristics.
Colonies on PDA reach 39 mm diam. after 5 days at 25 ° C in the dark. Round colony with slightly irregular margins, the central sporulating zone is black and flat, the margins are aged and raised, cottony appearance, yellowish-black at the sporulating zone and yellowish-white at the aging zone. On OA medium, the colonies reach 60 mm in diam., which is cotton wool-like, with neat edges, grey-black surface, grey-white edges and fluffy aerial hyphae. The back is greyish-white in the centre and white on the edges. On CMA medium, the diameter is up to 57 mm and the colony morphology is similar to that on OA.
Additional materials examined.
China • Jiangsu Province, Nanjing, Xuanwu District, Jiuhuashan Park, 18 June 2024, JHS 14-23; Qinhuai District, Yueyahu Park, YYH 23-17, isolated from leaf blight of Lolium perenne and Cynodon dactylon , respectively, Jia-Mei Zhao and Lin Huang.
Notes.
Curvularia herbicola is phylogenetically sister to C. manamgodae and C. spicifera (Fig. 2 View Figure 2 ). Morphologically, C. manamgodae can be easily distinguished from C. herbicola by its larger conidiophores (38–550 × 4–8 μm vs. 66–136 × 2–4 μm; Laforet (2015)). Curvularia spicifera differs from C. herbicola by its longer conidia (20–40 μm vs. 19–25 μm, Raza et al. (2019)). Furthermore, C. manamgodae was isolated from the leaf lesions of sugarcane. C. spicifera was isolated from some crops such as rice, corn and sorghum and reported to cause leaf spot disease and wilt disease ( Krizsan et al. 2015; Raza et al. 2019; Aslam et al. 2020; Ram et al. 2024).
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