Pleosporales » Melanommataceae » Camposporium

Camposporium multiseptatum

Camposporium multiseptatum D.F. Bao, Z.L. Luo, K.D. Hyde & H.Y. Su
Index Fungorum number: IF 557025; Facesoffungi number: FoF 07063

Etymology: Referring to multi-septate conidia of this species.

Holotype: DLU 792

 

Saprobic on submerged decaying wood in freshwater. Sexual morph: Undetermined. Asexual morph: Colonies on substratum effuse, superficial, black. Mycelium immersed, composed of hyaline, branched, smooth hyphae. Conidiophores micronematous, mononematous, short, simple, unbranched, flexuous, pale brown to subhyaline, smooth. Conidiogenous cells mono- or polyblastic, terminal, determinate, subhyaline. Conidia 97–111 μm long (x̄ = 103.8 μm, SD = 7.2, n = 30), 9–11 μm wide (x̄ = 9.8 μm, SD = 0.8, n = 30), fusiform to cylindrical, truncate at both of the ends, 10–13-septate, dark brown at central cells, paler both of end cells, with a short, septate, subhyaline, single appendage at apex, 11–17 μm long (x̄ = 13.8 μm, SD = 3, n = 15), 3.5–4.7 μm wide (x̄ = 4.1 μm, SD = 0.6, n = 15), smooth. (Descriptions from Hyde et al. 2020)

 

Culture characteristics: Conidia germinating on PDA within 24 h. Colonies on MEA at room temperature reaching 3.3 cm diam. in 3 weeks, mycelium grayish brown to dark brown after 4 weeks, composed brown to dark brown, septate, smooth hyphae.

 

Material examined: CHINA, Yunnan Province, saprobic on submerged decaying wood in Dulong River, October 2016, Z.L. Lou, 2D H 1–4–2, S-792 (DLU 792, holotype), ex-type living culture, DLUCC 792.

 

GenBank numbers: ITS = MN758889, LSU = MN759020, SSU = MN758955, TEF1-α = MN784093.

 

Notes: Camposporium multiseptatum is phylogenetically close to C. appendiculatum. Morphologically, C. multiseptatum is similar to C. appendiculatum in having short, simple conidiophores, mono- or polyblastic, terminal, determinate conidiogenous cells and cylindrical, septate conidia, truncate at both ends, with a single appendage at apex. However, C. multiseptatum differs from C. appendiculatum in having shorter appendage (11–17 μm versus 72–114 μm). Moreover, we compared the base pairs of TEF1-α gene regions, and there are 17 base pairs that were different in 875 nucleotides of the TEF1-α region. These results strongly support our isolate to be a new species. (Notes from Hyde et al. 2020)

 

Fig 1. Camposporium multiseptatum (DLU 792, holotype). a Appearance of the fungus on wood, b–h, Conidiophores with conidiogenous cells and conidia, I Surface view of culture on PDA, j Reverse view of culture on PDA. Scale bars: b–h = 30 μm (Hyde et al. 2020)

 

References

Hyde KD, Dong Y, Phookamsak R, Jeewon R, Bhat DJ, Jones EBG, Liu NG, Abeywickrama PD, Mapook A, Wei D, Perera RH, Manawasinghe IS, Pem D, Bundhun D, Karunarathna A, Ekanayaka AH, Bao DF, Li J, Samarakoon MC, Chaiwan N, Lin CG, Phutthacharoen K, Zhang SN, Senanayake IC, Goonasekara ID, Thambugala KM, Phukhamsakda C, Tennakoon DS, Jiang HB, Yang J, Zeng M, Huanraluek N, Liu JK, Wijesinghe SN, Tian Q, Tibpromma S, Brahmanage RS, Boonmee S, Huang SK, Thiyagaraja V, Lu YZ, Jayawardena RS, Dong W, Yang EF, Singh SK, Singh SM, Rana S, Lad SS, Anand G, Devadatha B, Niranjan M, Sarma VV, Liimatainen K, Aguirre-Hudson B, Niskanen T, Overall A, Alvarenga RLM, Gibertoni TB, Pfliegler WP, Horváth E, Imre A, Alves AL, da Silva Santos AC, Tiago PV, Bulgakov TS, Wanasinghe DN, Bahkali AH, Doilom M, Elgorban AM, Maharachchikumbura SSN, Rajeshkumar KC, Haelewaters D, Mortimer PE, Zhao Q, Lumyong S, Xu J, Sheng J (2020) Fungal diversity notes 1151–1276: taxonomic and phylogenetic contributions on genera and species of fungal taxa. Fungal Divers 100:5–277

 

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