Dematiaceous hyphomycetes from soil in tropical primordial rain forest of Jianfengling, Hainan Province of ChinaⅠ

张悦丽

Dematiaceous hyphomycetes from soil in tropical primordial rain forest of Jianfengling, Hainan Province of ChinaⅠ

ZHANG Yue-Li ZHANG Tian-Yu^* WANG Hong-Feng

Department of Plant Pathology, Shandong Agricultural University, Tai’an 271018, China

菌物学报 15 January 2008, 27(1): 29-38

Abstract: A total of 66 isolates of soil dematiaceous hyphomycetes belonging to 28 species in 22 genera was found from 22 soil samples in tropical primordial rain forest of Jianfengling in Hainan Island. Among them, the genera Beltraniopsis, Domingoella and Phaeoisaria are recorded for the first time in China, while Acrophialophora fusispora, Beltraniopsis esenbeckiae, Domingoella asterinarum, Phaeoisaria clematidis and Stachybotrys nephrospora are new record species to China. Descriptions and illustrations are given based on Chinese isolates. Dried cultures and living cultures studied have been deposited in Herbarium of Shandong Agricultural University: Plant Pathology (HSAUP).

Key words: taxonomy, soil fungi, Chinese new records

22 soil samples were collected from tropical primordial rain forest of Jianfengling, Hainan Province from the altitude of 740m to 810m. Sixty six isolates of dematiaceous hyphomycetes belonging to 28 species in 22 genera were obtained. Descriptions and illustrations based on Chinese isolates are given as follows. The works of Ellis (1971, 1976) are the main references for species identification.

Acrophialophora fusispora (Saksena) M. B. Ellis, Dematiaceous Hyphomycetes: 533, 1971. Fig. 1

≡Paecilomyces fusisporus Saksena, J. Indian Bot. Soc. 32: 187, 1953.

Colonies on PDA at 25℃ in 14 days effuse, felted, greyish brown, black in reverse, 3cm diameter. Mycelium mostly superficial, partly immersed; hyphae branched, septate, pale brown. Conidiophores straight, cylindrical, tapering gradually towards the apex, septate, brown, echinulate, simple with a terminal phialide and other single phialides, verticles just beneath the apex. Phialides flask-shaped, bearing a narrow, cylindrical neck, colorless, smooth, 9-15μm long, 3-5μm thick in the broadest part. Conidia in long chains, 0-septate, with obvious spiral bands, limoniform, pale brown, 7-11 × 3-5μm.

Isolated from sample HN 56, snuffcolored soil, altitude: 740m, HSAUP₀₅2331.

It is a new record for China.

Acrophialophora levis Samson & T. Mahmood, Acta Bot. Neerl. 19 (6): 807, 1970.

Isolated from samples: HN 54, snuffcolored soil, altitude: 740m, HSAUP₀₅2359; HN 56, snuffcolored soil, altitude: 740m, HSAUP₀₅2331; HN 59, snuffcolored soil, altitude: 750m, HSAUP₀₅2337.

Beltraniopsis esenbeckiae Batista & Bezerra, Publções Inst. Micol. Recife 296: 1-13, 1960.

Fig. 1 Acrophialophora fusispora (Saksena) M. B. Ellis: Conidiophores, conidia and conidiogenous cells (ex HSAUP₀₅2331).

Colonies on PDA at 25℃ in 14 days effuse, downy, dark brown. 2.5-3cm diameter. Mycelium mostly superficial, partly immersed, setae simple, brown, smooth, septate, up to 450μm long, 6-9μm thick at the base. Conidiophores macronematous, mononematous, straight, smooth, up to 450μm long, 6-9μm thick except the apex, the stip of conidiophores being a modified seta. Conidiogenous cells with several cylindrical denticals, integrated, terminal on branches, polyblastic, cylindrical, pale brown; discrete cells swollen, ellipsoidal, 6-8.5 × 4-5μm.