Parastagonospora zhaotongensis Y. Gao, H. Gui & K. D. Hyde 2024, sp. nov.
Authors/Creators
- 1. School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand & Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand & Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- 2. Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand & Center for Mountain Futures, Kunming Institute of Botany, Honghe 654400, Yunnan, China
- 3. School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
- 4. School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand & University of Chinese Academy of Sciences, Beijing 100049, China
- 5. University of Chinese Academy of Sciences, Beijing 100049, China
- 6. Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand & Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China & University of Chinese Academy of Sciences, Beijing 100049, China
Description
Parastagonospora zhaotongensis Y. Gao, H. Gui & K. D. Hyde sp. nov.
Fig. 3
Etymology.
The specific epithet “ zhaotongensis ” refers to Zhaotong City, where the holotype was collected.
Holotype.
HKAS 132983.
Description.
Saprobic on decaying stem of Dactylis glomerata (Poaceae). Sexual morph: Undetermined. Asexual morph: Conidiomata 70–85 μm high × 80–110 μm diam (x – = 76 × 94 μm, n = 10) 80–110 μm diam × 70–85 μm high (x – = 94 × 76 μm, n = 10), flattened, solitary, immersed in the epidermis of the host, globose to subglobose, brown to dark brown spots. Conidiomatal wall 5–13 µm wide (x – = 8 μm, n = 30), thin wall, 2–3 layered, composed of pale brown cells of textura angularis, with inner layer comprising hyaline cells. Conidiogenous cells (3.5 –) 4.5–6 (– 6.5) × (3 –) 4–5.5 (– 6) μm (x – = 5.5 ± 0.74 × 5 ± 0.77 μm, n = 20), hyaline, globose to subglobose, smooth-walled. Conidia (22 –) 25–30 (– 32) × (2.7 –) 3–3.4 (– 3.7) μm (x – = 28 ± 2.45 × 3.3 ± 0.21 μm, n = 35), hyaline, 0–3 - septate, cylindrical to subcylindrical, smooth-walled, rounded at apex, slightly truncate at base, guttulate.
Culture characteristics.
Colonies on PDA, reaching 20–25 mm diam., after three weeks at 25–27 ° C, with circular, floccose, white from the above and in reverse pale yellow.
Material examined.
China • Yunnan Province, Qujing City (26 ° 37 ' 38 " N, 103 ° 15 ' 29 " E), on decaying stem of Dactylis glomerata (Poaceae), 27 August 2022, Ying Gao, QG 44 A (HKAS 132983, holotype), ex-type (CGMCC 3.24519) • ibid. QG 44 B (HKAS 132984, paratype), ex-paratype (CGMCC 3.24520).
Note.
Based on multi-locus phylogenetic analyses, our strains of Parastagonospora zhaotongensis (CGMCC 3.24519 and CGMCC 3.24520) are closely related to Para. uniseptata (MFLUCC 13-0387) and Para. poae. Parastagonospora uniseptata was reported on Daucus sp. from Italy by Li et al. (2015). Pairwise nucleotide comparison indicates that our strains differ from Parastagonospora uniseptata in 17 / 573 bp of ITS (2.97 %, with 4 gaps), 2 / 834 bp of LSU (0.24 %, without gaps) and 20 / 906 bp of tef 1 - α (2.21 %, without gaps). The rpb 2 sequence of Parastagonospora uniseptata was not available for comparisons. Morphologically, Parastagonospora zhaotongensis is distinguished by its conidiogenous cells (globose to subglobose vs. ampulliform to broadly conical, phialidic), and conidia (22–32 μm long, 0–3 - septate vs. 14–18 μm long, 1 - septate) (Table 4). The pairwise nucleotide comparison showed that our strains (CGMCC 3.24519 and CGMCC 3.24520) differ from Parastagonospora poae (CBS 135089) in 15 / 562 bp of ITS (2.67 %, with 4 gaps), 2 / 828 bp of LSU (0.24 %, without gaps), and 10 / 250 bp of rpb 2 (4.00 %, without gaps). SSU and tef 1 - α data for Parastagonospora poae were not provided. Parastagonospora zhaotongensis differs from Para. poae in conidiomata (80–110 μm in diam., brown to dark brown spots vs. up to 250 μm in diam. black), conidiogenous cells (3.5–6.5 μm long, globose to subglobose vs. 6–10 μm long, ampulliform to subcylindrical) and conidia (2.7–3.7 μm wide, 0–3 - septate vs. 2–2.5 μm wide, 1 - septate) (Table 4).
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Collection code
- HKAS, CGMCC
- Material sample ID
- HKAS 132983, CGMCC 3.24519 , HKAS 132984, CGMCC 3.24520
- Event date
- 2022-08-27
- Verbatim event date
- 2022-08-27
- Scientific name authorship
- Y. Gao, H. Gui & K. D. Hyde
- Kingdom
- Fungi
- Phylum
- Ascomycota
- Order
- Pleosporales
- Family
- Phaeosphaeriaceae
- Genus
- Parastagonospora
- Species
- zhaotongensis
- Taxon rank
- species
- Taxonomic status
- sp. nov.
- Type status
- holotype , paratype
- Taxonomic concept label
- Parastagonospora zhaotongensis Gao, Hyde & Gui, 2024
References
- Li WJ, Bhat DJ, Camporesi E, Tian Q, Wijayawardene NN, Dai DQ, Phookamsak R, Chomnunti P, Bahkali AH, Hyde KD (2015) New asexual morph taxa in Phaeosphaeriaceae. Mycosphere 6 (6): 681–708. https://doi.org/10.5943/mycosphere/6/6/5
- Croll D, Crous PW, Pereira D, Mordecai EA, McDonald BA, Brunner PC (2021) Genome-scale phylogenies reveal relationships among Parastagonospora species infecting domesticated and wild grasses. Persoonia 46: 116–128. https://doi.org/10.3767/persoonia.2021.46.04
- Quaedvlieg W, Verkley GJM, Shin HD, Barreto RW, Alfenas AC, Swart WJ, Groenewald JZ, Crous PW (2013) Sizing up Septoria. Studies in Mycology 75: 307–390. https://doi.org/10.3114/sim0017
- Brahmanage RS, Dayarathne MC, Wanasinghe DN, Thambugala KM, Jeewon R, Chethana KWT, Samarakoon MC, Tennakoon DS, De Silva NI, Camporesi E, Raza M, Yan JY, Hyde KD (2020) Taxonomic novelties of saprobic Pleosporales from selected dicotyledons and grasses. Mycosphere 11 (1): 2481–2541. https://doi.org/10.5943/mycosphere/11/1/15
- Goonasekara ID, Camporesi E, Bulgakov TS, Phookamsak R, Jayawardena RS, Saichana N, McKenzie EHC (2019) Two novel species of Parastagonospora (Phaeosphaeriaceae, Pleosporales) on grasses from Italy and Russia. Asian Journal of Mycology 2 (1): 170–182. https://doi.org/10.5943/ajom/2/1/8
- Marin-Felix Y, Hernández-Restrepo M, Iturrieta-González I, García D, Gené J, Groenewald JZ, Cai L, Chen Q, Quaedvlieg W, Schumacher RK, Taylor PWJ, Ambers C, Bonthond G, Edwards J, Krueger-Hadfield SA, Luangsa-ard JJ, Morton L, Moslemi A, Sandoval-Denis M, Tan YP, Thangavel R, Vaghefi N, Cheewangkoon R, Crous PW (2019) Genera of phytopathogenic fungi: GOPHY 3. Studies in Mycology 94 (1): 1–124. https://doi.org/10.1016/j.simyco.2019.05.001
- Crous PW, Shivas RG, Quaedvlieg W, van der Bank M, Zhang Y, Summerell BA, Guarro J, Wingfield MJ, Wood AR, Alfenas AC, Braun U, Cano-Lira JF, García D, Marin-Felix Y, Alvarado P, Andrade JP, Armengol J, Assefa A, den Breeÿen A, Camele I, Cheewangkoon R, De Souza JT, Duong TA, Esteve-Raventós F, Fournier J, Frisullo S, García-Jiménez J, Gardiennet A, Gené J, Hernández-Restrepo M, Hirooka Y, Hospenthal DR, King A, Lechat C, Lombard L, Mang SM, Marbach PAS, Marincowitz S, Marin-Felix Y, Montaño-Mata NJ, Moreno G, Perez CA, Pérez Sierra AM, Robertson JL, Roux J, Rubio E, Schumacher RK, Stchigel AM, Sutton DA, Tan YP, Thompson EH, Vanderlinde E, Walker AK, Walker DM, Wickes BL, Wong PTW, Groenewald JZ (2014) Fungal Planet Description Sheets: 214–280. Persoonia 32 (1): 184–306. https://doi.org/10.3767/003158514X682395