Ctenomyces obovatus Y.F. Han, Z.Q. Liang & Z.Y. Zhang
publication ID |
https://dx.doi.org/10.3897/mycokeys.47.30740 |
persistent identifier |
https://treatment.plazi.org/id/D9EFC370-EC7C-64CE-89C9-57799F893BF8 |
treatment provided by |
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scientific name |
Ctenomyces obovatus Y.F. Han, Z.Q. Liang & Z.Y. Zhang |
status |
sp. nov. |
Ctenomyces obovatus Y.F. Han, Z.Q. Liang & Z.Y. Zhang sp. nov. Figure 4
Holotype.
CHINA, Shanxi Province, on soil, Nov. 2017, Z.Y. Zhang (HMAS 255446, holotype, ex-type culture CGMCC 3.19225).
Paratypes.
CHINA, Shanxi Province, on soil, Nov. 2017, Z.Y. Zhang, dried cultures HMAS 255447 and HMAS 255448, isolates CGMCC 3.19226 (GZUIFR-L15021) and CGMCC 3.19227 (GZUIFR-L15023).
Etymology.
Referring to the obovoid conidia.
Description.
Aerial hyphae hyaline, smooth, septate, abundant branched, 1.2-2.4 μm wide; racquet hyphae absent. Terminal and lateral conidia borne on hyphae, short protrusions, side branches or an ampulliform swelling. Conidia solitary or in series of up to 2 conidia, ellipsoidal, obovoid, smooth- or rough-walled, verrucose, spinate, 10.3-17.3 × 9.7-10.5 μm (x‒ = 14.5 × 10 μm, n=15). Intercalary conidia absent.
Culture characteristics.
Colonies on PDA growing in the dark reaching 14-15 mm diam. in 14 d at 25 °C, yellowish, white in the margin; fluffy; rounded, margin regular. Reverse brown.
Notes.
Ctenomyces obovatus resembles C. vellereus in conidia size and conidiogenous cells. However, C. obovatus is the only species that produces obovoid conidia in this genus. Furthermore, our ITS and multigene phylogeny shows that three isolates of C. obovatus formed a single clade separate from other species (Figure 1), which indicates that C. obovatus is a new species.
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