Acremonium capsici S.Q. Tong & Y.J. Wu, 2023
publication ID |
https://dx.doi.org/10.3897/mycokeys.95.97062 |
persistent identifier |
https://treatment.plazi.org/id/C5A6A4D7-BDBB-521D-B447-7A4B730B4FDA |
treatment provided by |
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scientific name |
Acremonium capsici S.Q. Tong & Y.J. Wu |
status |
sp. nov. |
Acremonium capsici S.Q. Tong & Y.J. Wu sp. nov.
Fig. 2 View Figure 2
Etymology.
Referring to the type strain isolated from the rhizosphere soil of Capsicum annuum .
Type.
Guiyang City , Guizhou Province, China 26°45'75"N, 106°64'87"E, isolated from the rhizosphere soil of Capsicum annuum , August 2022, Shuo-Qiu Tong (dried holotype culture SQT H-01, ex-holotype culture SQT01). GenBank: ITS = OP703286 View Materials ; LSU = OP740978 View Materials ; SSU = OP750190 View Materials ; TEF 1 -α = OP757287 View Materials ; RPB2 = OP730522 View Materials .
Description.
Culture characteristics (14 days at 25 °C) - Colonies on PDA 20-21 mm diam, white, hairy, flat, radially striated, with a regular edge; reverse white. Colonies on MEA 18-19 mm in diameter, white, floccose, radially striated, with a regular edge; reverse white. Colonies on OA 18-19 mm in diameter, pale white, flat, with regular edge; reverse pale white. Colonies on CMA 18-19 mm in diameter, pale white, felty, with regular edge; reverse pale white. Hyphae hyaline, smooth, septate, branched, 1.0-2.5 µm wide. Phialides straight to flexuous, hyaline, smooth, arising from superficial hyphae, from hyphal strands or from hyphal coils, 20-42 μm (n = 50) long, 1-2 μm (n = 50) wide at the base. Conidia arranged in slimy heads, one-celled, ovoid to ellipsoidal, fusiform, 2.0-3.5 × 1.5-2.0 µm (n = 50), hyaline, smooth, or rough. Chlamydospores and teleomorph were not observed.
Additional specimens examined.
Guiyang City , Guizhou Province, China 26°45'75"N, 106°64'87"E, isolated from the rhizosphere soil of Capsicum annuum , August 2022, Shuo-Qiu Tong, SQT02, ibid., SQT03. GenBank: ITS = OP703287 View Materials - OP703288 View Materials ; LSU = OP740979 View Materials - OP740980 View Materials ; SSU = OP750191 View Materials - OP750192 View Materials ; TEF 1 -α = OP757288 View Materials - OP757289 View Materials ; RPB2 = OP730523 View Materials - OP730524 View Materials .
Known distribution.
Guiyang City, Guizhou Province, China.
Notes.
In a phylogenetic tree based on LSU + ITS sequences, Acremonium capsici forms a separate clade sister to A. variecolor in Acremonium sensu lato ( Bionectriaceae ). In a comparison of LSU and ITS nucleotides, A. capsici (Type strain SQT01) has 93% and 83% similarity, in LSU (459/492 bp, one gap) and ITS (388/468 bp, 16 gaps), which is different from A. variecolor (CBS 130360). They are distinguished by the appearance of colonies on OA, MEA, and PDA: colonies of A. capsici grow slowly (less than 25 mm), and are white, while colonies of A. variecolor grow faster (more than 40 mm), and are white to yellowish ( Giraldo et al. 2012). In addition, A. capsici bear simple phialides, while conidiophores of A. variecolor are mostly branched, bearing whorls of two to five phialides ( Giraldo et al. 2012). A. variecolor produces sessile conidia, which is not seen in A. capsici ( Giraldo et al. 2012).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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