Minutisphaerales » Acrogenosporaceae » Acrogenospora

Acrogenospora verrucispora

Acrogenospora verrucispora Hong Zhu, L. Cai & K.Q. Zhang [as ‘verrucospora’], Mycotaxon 92: 384 (2005)

 

Saprobic on submerged decaying wood. Sexual morph: Undetermined. Asexual morph: Colonies effuse on natural substrate, hairy, dark brown. Mycelium partly immersed, partly superficial, composed of septate, brown to dark brown, branched, smooth hyphae. Conidiophores 103–149 × 5.6–7.4 μm ( = 125.8 × 6.5 μm, n = 15) wide, mononematous, macronematous, solitary or sometimes in a small group, erect, straight or slightly flexuous, cylindrical, unbranched, brown to dark brown, paler toward apex, septate, smooth. Conidiogenous cells holoblastic, monoblastic, integrated, initially terminal, later becoming intercalary, cylindrical, smooth, pale brown, proliferating percurrently. Conidia 21.3–26.5 × 20.6–25.5 μm ( = 24 × 23 μm, n = 30) wide, acrogenous, solitary, spherical or subspherical, base truncate, aseptate, hyaline when young, orange-brown to olivaceous brown when mature, distinctly verrucose. (Descriptions from Bao et al. 2020)

 

Material examined: CHINA, Yunnan Province, Gaoligongshan Mountain, saprobic on decaying wood submerged in a stream, May 2017, H.W. Shen. S-1402 (MFLU 20–0287), living culture, MFLUCC 20–0098. S-1328 (DLU 1328), living culture, MFLUCC 18–1617.

 

NotesAcrogenospora verrucispora was introduced by Zhu et al. (2005) with distinct verrucose conidia, it was collected from bamboo in a stream in Yunnan province, China. A. verrucispora is characterized by mononematous, macronematous, proliferating percurrently conidiophores, monoblastic, integrated conidiogenous cells and acrogenous, solitary, spherical or subspherical, verrucose conidia. Isolate of Bao et al. (2020) fits well with the original description of A. verrucispora. As the sequence data of A. verrucispora is not available in GenBank, we identify our isolate as A. verrucispora based on the morphological characters and provide sequence data for this species. (Notes from Bao et al. 2020)

 

References

Bao DF, McKenzie EHC, Bhat DJ, et al (2020) Acrogenospora (Acrogenosporaceae, Minutisphaerales) appears to be a very diverse genus. Front Microbiol 1606. https://doi.org/10.3389/fmicb.2020.01606

Zhu H, Cai L, Hyde KD, Zhang K (2005) A new species of Acrogenospora from submerged bamboo in Yunnan, China. Mycotaxon 92:383–386