Pleosporales » Pleosporaceae » Curvularia

Curvularia chiangmaiensis

Curvularia chiangmaiensis Y. Marín, Senwanna & Crous, Mycosphere 8: 1565 (2017)

Index Fungorum number: IF822082, Faces of Fungi number: FoF 12887, FIGURE 4.

 

Asexual morph: Conidiophores 70–180 × 3.5–4 μm (x̅ = 123 × 3.8 μm, n = 20), single, straight or flexuous, septate, sometimes geniculate in the upper part, micronematous to macronematous, mononematous, pale brown to brown, paler towards apex. Conidiogenous cells polytretic, proliferating sympodially, cylindrical to sub-cylindrical, hyaline to pale brown, smooth-walled, terminal, or intercalary. Conidia 14–28 × 9–13 (x̅ = 21 × 11 μm, n = 25) μm, ellipsoidal to obovoid, sometimes curved, slightly verruculose, hyaline to pale brown, (2–)3-distoseptate, hila slightly conspicuous, 1.5–2.5 μm (x̅ = 2). Sexual morph: Undetermined.

Culture characteristics: — Colonies on PDA at 25 ℃, flat, irregular margin, cottony, yellowish brown to black surface, 3.5 cm diam. after 7 days, reverse black center, brownish black at margin. Hyphae 1.5–4 μm (x̅ = 3 μm) wide, often branched, rarely guttulate, smooth to rough-walled, sometimes geniculate, hyaline when immature, and later become pale brown (melanized) to brown, septate. Chlamydospores guttulated, initially hyaline and becoming pale brown to brown (melanized) when mature.

Known hosts and substrates: — Zea mays, Saccharum officinarum, and on soil (Marin-Felix et al.2017b, Raza et al. 2019)

Known distribution: —China and Thailand (Marin-Felix et al. 2017b, Raza et al. 2019, this study).

Material examined: —Thailand, Krabi, 8°4'11 "N 98°53'25" E, 181m, on forest soil, 28 October 2019, W.A.E.  Yasanthika (MFLU22-0252); living culture, MFLUCC 22-0084

 

 

FIG X. Curvularia chiangmaiensis (MFLU22-0252, new record) a. Colony from above (on PDA). b. Colony from below (on PDA). c. Sporulated colony with conidial attachments on the mycelium. d. Immature hyphae e. Mature melanized hyphae. f. Hyaline chlamydospores. g. Melanized chlamydospores h. Macronematous conidiogenesis on the conidiophore. i–m. Conidiogenesis. n–s. Conidia. Scale bars: g = 25 μm, d–f, h–l = 20 μm, m–s= 10 μm

 

Retrieved from:

Yasanthika, W. A. E., Tennakoon, D.S., Gomes De Farias, A.R., Chethana, K. W. T. et al. 2023 –  Isolation and characterization of novel Dothideomycetes species from forest soils in Chiang Rai and Krabi (Thailand): additions to the diversity of Curvularia and Verruconis. Phytotaxa 609: 17–44. http://dx.doi.org/10.11646/phytotaxa.609.1.3

References

Marin-Felix Y, Senwanna C, Cheewangkoon R,  Crows, PW. 2017 – New species and records of Bipolaris and Curvularia from Thailand. Mycosphere 8, 1556–1574.

Raza M, Zhang ZF, Hyde KD, Diao YZ, Cai L. 2019 – Culturable plant pathogenic fungi associated with sugarcane in southern China. Fungal Diversity 99, 1–104

 

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