Pleosporales » Phaeosphaeriaceae » Paraloratospora

Paraloratospora camporesii

Paraloratospora camporesii Bundhun, Jeewon & K.D. Hyde, in Hyde et al., Fungal Diversity 100: 105 (2020)

Index Fungorum number: IF556993; Facesofungi number: FoF 06980

Etymology: Named in honour of Mr. Erio Camporesi who made an immense contribution to fungal investigation and collection.

Holotype: MFLU 180915

Associated with living branch of Lonicera xylosteum. Sexual morph: Ascomata 160–177 µm high, 138–145 µm diam. (x̄ = 169.1 × 140.6 µm, n = 7), solitary, scattered to aggregated, immersed to erumpent through host surface, noticeable as small black spots, mostly uni-loculate, globose to subglobose, dark brown, glabrous, centrally ostiolate. Ostioles up to 30 µm and 42 µm wide, central, with minute papilla, dark brown, comprising hyaline periphyses. Peridium of unequal thickness, thicker near the apex (17–21 µm) and thinner at the sides and base (12–16 µm), comprising 4–7 layers, outer part composed of dark brown thick-walled cells of textura angularis, inner layer made up of pale brown to hyaline thin-walled cells of textura angularis. Hamathecium 50–90 µm high, 2.6–4.5 µm wide, unbranched, septate, pseudoparaphyses, constricted at the septum. Asci 52–68 × 7–11 µm (x̄ = 55.3 × 9.8 µm, n= 13), 8-spored, bitunicate, fissitunicate, cylindrical, sessile to subsessile, apex rounded, thick-walled, with a small ocular chamber. Ascospores 20–24 × 3–5 µm (x̄ = 21.7 × 4.3 µm, n = 25), overlapping 1–2-seriate, 3-transversely septate, hyaline, fusiform with rounded ends, second cell from the apex swollen, all septa with black dots at ends, straight, smooth-walled, surrounded by a sheath. Asexual morph: Undetermined.

Material examined: ITALY, Province of Forlì-Cesena, Strada San Zeno-Galeata, on living branch of Lonicera xylosteum L. (Caprifoliaceae), 23 March 2018, E. Camporesi, IT 3788 (MFLU 18-0915, holotype).           

GenBank Numbers: ITS: MN756639, LSU: MN756637, SSU: MN756635, TEF1-α: MN756633

Note: In multi-gene phylogenetic analyses, Paraloratospora camporesii (strain MFLU 180915) has a close phylogenetic relationship with Phaeosphaeria caricicola (CBS 133078) with significant support in BI analysis (67% ML, 1.00 BYPP) and also group with other Phaeosphaeria sensu lato. Paraloratospora camporesii is similar to Phaeosphaeria caricicola but differs in size range and colour of ascospores. Phaeosphaeria caricicola has smaller ascospores (18–21 × 4 μm) and the ascospores are olivaceous (Shoemaker and Babcock 1989), while, Paraloratosporacamporesii has hyaline ascospores. Nucleotide comparison of ITS and TEF1-α shows that our new species differs from Phaeosphaeria caricicola in 39/515 bp (7.6%) and more than 40 over 336 bp (> 11.9%) respectively.