Pleosporales » Phaeosphaeriaceae » Camposporium

Camposporium appendiculatum

Camposporium appendiculatum D.F. Bao, Z.L. Luo, K.D. Hyde & H.Y. Su, in Hyde et al., Fungal Diversity 100: 77 (2020)

Index Fungorum number: IF557026         Facesoffungi number: FoF07064

 

Sexual morph: Undetermined. Asexual morph: Colonies on substratum effuse, superficial, black. Mycelium immersed, composed of brown, branched, smooth hyphae. Conidiophores micronematous, mononematous, very short, simple, unbranched, flexuous, pale brown to subhyaline, smooth. Conidiogenous cells mono- or polyblastic, terminal, integrated, denticulate, subhyaline. Conidia 107–119 μm long (x̄ = 113.2 μm, SD = 6.1, n = 30), 9.5–11.5 μm wide (x̄ = 10.4 μm, SD = 1, n = 30), solitary, cylindrical, elongate, 10–13-septate, pale brown at middle cells, hyaline at mucilaginous sheath surrounding conidia.

 

Culture characteristics: Colonies on PDA reaching 33–35 mm diam. after 3 weeks at room temperature (20–30 ºC). Colony medium dense, circular, flattened to raised, surface slightly rough with hyphal tufts, edge entire, velvety to fluffy; from above, white to white yellowish at the margin, light green to yellowish green at the centre; from below, radiating outwards colony, white to cream at the margin, dark green to black at the middle, orangish brown at the centre; producing yellowish pigment on agar medium. both the end cells, truncate at both of ends, the apex with a filiform, septate, hyaline apical appendage, 72–114 μm long (x̄ = 107.8 μm, SD = 35.9, n = 25), 3.5–4.8 μm wide (x̄ = 4.2 μm, SD = 0.6, n = 25), smooth.

 

Culture characteristics: Conidia germinating on PDA within 24 h. Colonies on PDA at room temperature reaching 2.5 cm diam. in 3 weeks, mycelium pale brown to greyish brown after 3 weeks, composed of pale brown to brown, septate, smooth hyphae.

 

Material examined: CHINA, Yunnan Province, saprobic on submerged decaying wood in Lancang River, December 2016, Z.L. Luo, 2L H 6–3–2, S-1234 (DLU 1234, holotype), ex-type living culture, DLUCC 1234.

 

GenBank Accession No: ITS: MN758890, LSU: MN759021, SSU: MN758956, TEF1-a: MN784094.

Notes: Morphologically, Camposporium appendiculatum is similar to C. cambrense S. Hughes in having short, simple, unbranched conidiophores, mono- or polyblastic, terminal, integrated conidiogenous cells and cylindrical, elongate, septate conidia with a single appendage at apex. However, C. appendiculatum has 10–13-septate conidia with truncate at both ends, whereas, C. cambrense has 3–15-septate conidia, rounded at apex and truncate base. Phylogenetically, C. appendiculatum is not close to C. cambrense, rather it clusters with C. multiseptatum and is sister to C. lycopodiellae (≡ Fusiconidium lycopodiellae) with a strong statistical support (99% ML, 1.00 BYPP).

 

Figure X. Camposporium appendiculatum (DLU 1234, holotype). a Appearance of the fungus on wood. b–k Conidia. l Conidiophores. m Germinating conidium. Scale bars: b = 50 μm, c–m = 30 μm

Reference:

: Hyde KD, Dong Y, Phookamsak R, Jeewon R et al. (2020) Fungal diversity notes 1151–1276: taxonomic and phylogenetic contributions on genera and species of fungal taxa. Fungal Diversity (2020) 100:5–277.

 

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