Aplosporella prunicola Damm & Crous

Aplosporella prunicola Damm & Crous , Fungal Diversity 27: 39 (2007).

Fig. 12 View Figure 12

Description.

Sexual form: Not observed. Asexual form: Fruiting bodies densely distributed on dead twigs of Platycladus orientalis , mostly immersed in the host epidermis. Conidiomata pycnidial, immersed, multilocular, solitary, 406–651 μm diam., pycnidial wall composed of dark brown textura angularis in the outer layers, gradually becoming paler toward the interior, with the innermost region thin-walled and hyaline. Ostiole central, 67–122 μm diam. Conidiophores reduced to conidiogenous cells. Conidiogenous cells cylindrical, smooth, hyaline, 6.7–14.6 × 2.1–5.9 μm (av. ± S. D. = 10.5 ± 2.5 × 3.7 ± 1.1). Paraphyses long-cylindrical, occasionally swollen at the apex, 30.7–92.5 × 1.1–7.0 μm, septate, hyaline, smooth-walled, and branched. Conidia 16.1–23.0 × 8.3–14.2 μm (av. ± S. D. = 19.8 ± 1.6 × 11.1 ± 1.3), initially hyaline, gradually turning yellowish-brown, and finally dark brown at maturity, aseptate, smooth-walled.

Cultural characteristics.

On PDA at 25 ° C under dark conditions, the colony reached approximately 60 mm in diameter after 4 days of incubation, exhibiting abundant floccose aerial mycelium. After 10 days, the colony developed pale grayish-green pigmentation, later transitioning to whitish-gray and ultimately olivaceous. Sporulation commenced after 2 weeks, forming subglobose pycnidia.

Specimens examined.

China • Beijing City, Changping District, Longshan Sub-Farm, Ming Tombs , 40°14'25"N, 116°13'17"E, on the dead branches of Platycladus orientalis , 18 July 2024, Z. X. Bi & C. M. Tian, BJFC -S 2569 , living culture CFCC 72634 GoogleMaps ; China • Beijing City, Changping District, Dayu Mountain Scenic Area, Ming Tombs , 40°18'32"N, 116°11'47"E, on the dead branches of P. orientalis , 23 October 2024, Z. X. Bi & M. H. Wang, BJFC -S 2570 , living culture CFCC 72640 GoogleMaps .

Notes.

Aplosporella prunicola was first isolated by Damm et al. (2007) from Prunus persica var. nucipersica in South Africa. In China, A. prunicola has been recorded on Castanea mollissima , Euonymus japonicus , and Zanthoxylum bungeanum ( Jiang 2021; Li et al. 2023; Lin et al. 2023 b). Based on comprehensive phylogenetic and morphological analyses, strains CFCC 72634 and CFCC 72640 were identified as A. prunicola .