Ellipsoidisporodochium photiniae S.B. Liu, J.W. Xia & X.G. Zhang, 2022

Liu, Shu-Bin, Zhang, Zhao-Xue, Liu, Rong-Yu, Mu, Tai-Chang, Zhang, Xiu-Guo, Li, Zhuang & Xia, Ji-Wen, 2022, Morphological and molecular identification of Ellipsoidisporodochium gen. nov. (Tubakiaceae, Diaporthales) in Hainan Province, China, Phytotaxa 552 (4), pp. 259-266 : 264

Ellipsoidisporodochium photiniae S.B. Liu, J.W. Xia & X.G. Zhang , sp. nov.

Fig. 2

MycoBank: 842209

Etymology: The specific epithet refers to the genus of the host plant Photinia serratifolia .

Description: Asscociated with leaf spot on Photinia serratifolia . Conidiomata sporodochial, appeared within 14 days or longer, formed on agar surface, globose to subglobose, pale bluish green in the center, with a layer of transparent conidia on the outside. Sporodochial conidiophores irregularly branched, 12–18 × 3–6 μm, tapering towards apex, swelling at base; sporodochial phialides monophialidic, fusoid to ampulliform, 7–13 × 3–6 μm, smooth, thin-walled. Conidia solitary, obovoid to ellipsoid, 9–13 × 5–8 μm, hyaline to subhyaline, guttulate, smooth, apex obtuse, base with inconspicuous to conspicuous hilum, 0.8–1.4 μm. Sexual morph: unknown.

Culture characteristics: Colonies on PDA incubated at 25 °C in the dark with an average radial growth rate of 6.5–7.5 mm /day and occupying an entire 90 mm Petri dish in 14 days; Margin scalloped or irregularly round, center yellowish brown and white edges, aerial mycelium poorly developed, reverse similarity. Produced conidiomata sporodochial after 14 days or longer on colonies.

Type specimen: China, Hainan Province: Wuzhishan National Nature Reserve , on diseased leaves of Photinia serratifolia , 20 May 2021, S. B . Liu (Holotype, HSAUP210421 ) .

Living ex-type culture: SAUCC 210421.

Additional specimens examined: China, Hainan Province: Wuzhishan National Nature Reserve , on diseased leaves of Photinia serratifolia , 20 May 2021, S. B. Liu ( HSAUP210423 ), living culture SAUCC 210423 .

Figures

FIGURE 2. Ellipsoidisporodochium photiniae (SAUCC 210421). a Leaves of host plant. b Surface of colony after 15 days on PDA. c Reverse of colony after 15 days on PDA. d Conidiomata sporulating on PDA margin. e–g Conidiogenous cells with developing conidia. h–i Conidia. Scale bars = 10 μm (e–i).