Phaeobotryon platycladi L. Lin & X.L. Fan, 2023
publication ID |
https://dx.doi.org/10.3897/mycokeys.97.102653 |
persistent identifier |
https://treatment.plazi.org/id/18D6BBF3-3D15-5782-AF0F-79009C2235EF |
treatment provided by |
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scientific name |
Phaeobotryon platycladi L. Lin & X.L. Fan |
status |
sp. nov. |
Phaeobotryon platycladi L. Lin & X.L. Fan sp. nov.
Fig. 6 View Figure 6
Etymology.
Named after the host genus, Platycladus .
Description.
Conidiomata pycnidial, scattered, subglobose to globose, erumpent, exuding faint yellow translucent conidial droplets from central ostioles, unilocular, 150-250 μm diam. Disc black, 80-200 µm in diam. Ostioles single, central, papillate, 21-35 µm. Conidiophores reduced to conidiogenous cells. Conidiogenous cells hyaline, smooth, thin-walled, cylindrical, holoblastic, phialidic, proliferating internally with visible periclinal thickening, 5.5-14.0 × 2.5-4.0 μm (av. ± S.D. = 10.2 ± 2.5 × 3.2 ± 0.4 μm). Conidia initially hyaline, oval, both ends broadly rounded, aseptate, rarely becoming 1-septate, 23.0-31.0 × 9.5-12.5 μm (av. ± S.D. = 26.2 ± 2.5 × 10.8 ± 0.8 μm).
Culture characters.
Colonies on PDA spreading, upper white to buff, reverse buff to isabelline covering a 90 mm plate after 14 days at 25 °C. Colonies on MEA spreading, stratiform, with appressed aerial mycelium and crenate edge, upper white to isabelline, reverse buff to hazel, covering a 90 mm plate after 14 days at 25 °C.
Materials examined.
China, Beijing City, Haidian District, National Botanic Gardens , 39°59'42.41"N, 116°12'47.24"E, on dead branches of Platycladus orientalis , 4 August 2022, Yukun Bai & Xinlei Fan (holotype BJFC CF20230110, ex-holotype culture CFCC 58799); 39°59'42.43"N, 116°12'47.46"E, on dead branches of Platycladus orientalis , 4 August 2022, Yukun Bai & Xinlei Fan (paratype BJFC CF20230111, ex-paratype culture CFCC 58800) GoogleMaps .
Notes.
Phaeobotryon platycladi is monophyletic with Ph. cupressi in the phylogenetic tree without a significant statistical support. Conidial sizes of the two species overlap, but there are differences in 6/488 in ITS region, 3/556 in LSU region, and 18/293 in tef1 -α gene with gaps.
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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