Cytospora sinopopuli Ning Jiang 2026, sp. nov.
Authors/Creators
- 1. Key Laboratory of Forest Ecology in Tibet Plateau, Ministry of Education, Institute of Tibet Plateau Ecology, Xizang Agricultural and Animal Husbandry University, Linzhi, Xizang 860000, China
- 2. The Key Laboratory for Silviculture and Conservation of the Ministry of Education, Beijing Forestry University, Beijing 100083, China
- 3. Key Laboratory of Forest Protection of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing 100091, China
Description
Cytospora sinopopuli Ning Jiang sp. nov.
Fig. 5
Etymology.
Named after the collection country China (sino -) and the host genus, Populus.
Description.
Associated with branch canker disease of Populus szechuanica var. tibetica. Teleomorph: Pseudostromata Group SII (type s 3), immersed in the bark, scattered to serried, conical, 1700–2450 μm diam., 450–800 μm high, with 6–12 perithecia arranged circularly. Conceptacle absent. Ectostromatic disc buff to honey, circular to ovoid, 420–600 μm diam., with 6–12 ostioles arranged circularly per disc. Ostioles brown to black, 85–150 μm diam. Perithecia flask-shaped to spherical, 350–500 μm diam. Asci hyaline, with chitinoid, refractive ring, clavate, (38.5 –) 45–59 (– 60) × (6.5 –) 9–13.5 (– 14.5) μm, 8 - spored. Ascospores multiseriate, allantoid, thin-walled, hyaline, aseptate, (10 –) 13.5–15.5 (– 16.5) × (2 –) 2.5–3 (– 3.5) (av. = 14.6 ± 1.1 × 2.8 ± 0.3, n = 50) μm, L / W ratio = 4.7–5.7. Anamorph: Undetermined.
Culture characteristics.
Colonies on PDA flat, spreading, with abundant aerial mycelium and entire margin, initially white, turning brown after 1 wk, fast growing, reaching 90 mm diam. after 2 wk at 25 ° C, sterile.
Materials examined.
China, • Xizang Autonomous Region (Tibet), Linzhi (Nyingchi) City, Bomi (Bomê) County, 29°44'1"N, 96°2'41"E, 3050 m asl, from cankered branches of Populus szechuanica var. tibetica, 22 Oct. 2024, Ning Jiang, Min Liu, Jieting Li & Yi Li (holotype CAF 800151, ex-type cultures CFCC 71370 and CFCC 71955).
Notes.
Cytospora sinopopuli, isolated from Populus szechuanica var. tibetica (Salicaceae) in Xizang, is phylogenetically closely related to C. lauricola from Laurus nobilis (Lauraceae) in Yunnan (Fig. 1). Currently, C. sinopopuli is known only from its teleomorph, while C. lauricola has been described only in its anamorph stage; therefore, direct morphological comparison between the two species is not possible. Nevertheless, C. sinopopuli is clearly distinguished from C. lauricola by molecular data: 1 / 512 bp (0.19 %) in ITS, 8 / 255 bp (3.14 %) in act, 1 / 625 bp (0.16 %) in rpb 2, and 31 / 264 bp (11.74 %) in tef 1 (Lin et al. 2024).
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Collection code
- CAF, CFCC
- Material sample ID
- CAF 800151, CFCC 71370, CFCC 71955
- Event date
- 2024-10-22
- Verbatim event date
- 2024-10-22
- Scientific name authorship
- Ning Jiang
- Kingdom
- Fungi
- Phylum
- Ascomycota
- Order
- Diaporthales
- Family
- Valsaceae
- Genus
- Cytospora
- Species
- sinopopuli
- Taxon rank
- species
- Taxonomic status
- sp. nov.
- Type status
- holotype
- Taxonomic concept label
- Cytospora sinopopuli Jiang, 2026
References
- Lin L, Fan X, Groenewald J, Jami F, Wingfield MJ, Voglmayr H, Jaklitsch W, Castlebury L, Tian C, Crous PW (2024) Cytospora: An important genus of canker pathogens. Studies in Mycology 109: 323–401. https://doi.org/10.3114/sim.2024.109.05