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Neoacrodontiella Eucalypti Fungal Planet Description Sheets 347 346 Persoonia – Volume 42, 2019 Neoacrodontiella eucalypti Fungal Planet description sheets 347 Fungal Planet 888 – 19 July 2019 Neoacrodontiella Crous & M.J. Wingf., gen. nov. Etymology. Name refers to a morphological similarity with the genus septate. Conidiogenous cells terminal and intercalary, subcy- Acrodontiella. lindrical, irregularly curved, rarely straight, with apical taper Classification — Acarosporaceae, Acarosporales, Lecanoro­ and pimple-like loci, not to slightly thickened. Conidia solitary, mycetes. hyaline, smooth-walled, guttulate, fusoid, straight, aseptate, apex subacute, base truncate, not to slightly thickened. Mycelium consisting of branched, septate, hyaline, smooth Type species. Neoacrodontiella eucalypti Crous & M.J. Wingf. hyphae. Conidiophores aggregated in sporodochia, arising MycoBank MB830844. from a hyaline stroma, subcylindrical, smooth, branched, multi- Neoacrodontiella eucalypti Crous & M.J. Wingf., sp. nov. Etymology. Name refers to Eucalyptus, the host genus from which this Notes — Neoacrodontiella is somewhat reminiscent of Acro­ fungus was isolated. dontiella (Seifert et al. 2011), though distinct in that it forms Mycelium consisting of branched, septate, hyaline, smooth, 2–3 sporodochia, and the conidiogenous loci are flattened and more mm diam hyphae. Conidiophores aggregated in sporodochia, prominent than in Acrodontiella, with conidia also having pro- arising from a hyaline stroma, subcylindrical, smooth, branched, minently truncate hila. multiseptate, 30–50 × 3–4 mm. Conidiogenous cells terminal No significant hits were obtained when the ITS sequence was and intercalary, subcylindrical, irregularly curved, rarely straight, used in a megablast search of NCBIs GenBank nucleotide data- with apical taper, 20–30 × 2.5–3 mm, with pimple-like loci, not to base; the closest hits were with Corticifraga peltigerae (Gen- slightly thickened. Conidia solitary, hyaline, smooth-walled, gut- Bank KY462801.1; Identities = 377/451 (84 %), 42 gaps (9 %)), tulate, fusoid, straight, aseptate, apex subacute, base truncate, Taitaia aurea (GenBank NR_160480.1; Identities = 367/444 not to slightly thickened, (11–)12–15(–17) × (2.5–)3(–3.5) mm. (83 %), 36 gaps (8 %)) and Gomphillus americanus (GenBank Culture characteristics — Colonies erumpent, spreading, KY381580.1; Identities = 177/181 (98 %), no gaps). Closest hits surface folded, with sparse aerial mycelium and smooth, lobate using the LSU sequence are ‘Spermospora avenae’ (GenBank margin, reaching 15 mm diam after 2 wk at 25 °C. On MEA, MH878416.1; Identities = 790/825 (96 %), 2 gaps (0 %)), Cyto­ PDA and OA surface and reverse luteous to orange. sporella chamaeropis (GenBank MH871929.1; Identities = 759/ 810 (94 %), 4 gaps (0 %)) and Acarospora thamnina (GenBank Typus. MALAYSIA, on leaves of Eucalyptus urophylla (Myrtaceae), 31 Mar. 2018, M.J. Wingfield, HPC 2392 (holotype CBS H-23955, culture ex-type KF024746.1; Identities = 475/508 (94 %), 4 gaps (0 %)). The CPC 35693 = CBS 145561, ITS and LSU sequences GenBank MK876396.1 LSU sequence of Spermospora avenae is most likely incorrect and MK876437.1, MycoBank MB830845). as it is not congeneric with other sequences of the genus in the database. Colour illustrations. Eucalyptus leaf litter. Colony on oatmeal agar; coni- diogenous cells and conidia. Scale bars = 10 µm. Pedro W. Crous & Johannes Z. Groenewald, Westerdijk Fungal Biodiversity Institute, P.O. Box 85167, 3508 AD Utrecht, The Netherlands; e-mail: [email protected] & [email protected] Michael J. Wingfield, Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), Faculty of Natural and Agricultural Sciences, University of Pretoria, Private Bag X20, Hatfield 0028, Pretoria, South Africa; e-mail: [email protected] © 2019 Naturalis Biodiversity Center & Westerdijk Fungal Biodiversity Institute.
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