Hymenopleella agaves I.C. Senan., & K.D. Hyde, sp. nov.2021
MycoBank Index Fungorum number: IF558478; Facesoffungi number: FoF 09904
Holotype: HKAS 115763.
Morphological description
Sexual morph：
Asexual morphs: Conidiomata scattered, acervular, semi-immersed, black. Conidiophores reduced to conidiogenous cells. Conidiogenous cells 3.5–10 × 1–3 μm (x̄ = 6 × 2.5 μm, n = 30), discrete, sub-cylindrical, hyaline to olivaceous, smooth. Conidia 15–20 × 2–3 μm (x̄ = 18 × 2.5 μm, n = 30), cylindrical, subcylindrical, straight or slightly curved, olivaceous, 1-(3)-septate, smooth, fairly thick-walled, without constriction at the septa,; basal cell conical, thin-walled, hyaline to pale brown, 3–5 μm (x̄= 3.5 μm) long; median cells, cylindrical, pale brown, together 15–25 μm (x̄ = 21 μm) long, each cell 8–15 μm long; apical cell conical, hyaline to pale brown, 3–6 μm (x̄ = 5.5 μm) long; apical and basal appendages absent.
Cultures: Colonies on potato dextrose agar (PDA) reaching about 2 cm diam after 7 days at 18°C, flat with entire edge, white, aerial mycelia appear as woolly clots, reverse offwhite.
Habitat: live leaves of Agave sp. (Asparagaceae).
Distribution: China, Guangdong Province, Shenzhen, Nanshan District, Mountain Yangtai Forest Park.
GenBank Accession: (ITS) MZ420208, (LSU) MZ420203, (rpb2) MZ419853 and (tef-1) MZ419852.
Notes: Phylogenetic analysis of combined ITS, LSU, rpb2 and tef-1 genes (Fig. 21) showed that our Hymenopleella strain is phylogenetically closely related with H. subcylindrica and H. endophytica. However, our strain is distinct forming a sub-clade with MP/BI = 97/1 support values. Our strain is different from H. subcylindrica and H. endophytica having oval to cylindrical conidia without appendages and lacking conidiophores (Jaklitsch et al. 2016, Liu et al. 2019, Voglmayr et al. 2019).
Reference: Hyde KD, Suwannarach N, Jayawardena RS, Manawasinghe IS, Liao CF, Doilom M, Cai L, Zhao P, Buyck B, Phukhamsakda C, Su WX, Fu YP, Li Y, Zhao RL, He MQ, Li JX, Tibpromma S, Lu L, Tang X, Kang JC, Ren GC, Gui H, Hofstetter V, Ryoo R, Antonín V, Hurdeal VG, Gentikaki E, Zhang JY, Lu YZ, Senanayake IC, Yu FM, Zhao Q, Bao DF 2021 – Mycosphere notes 325-344 – Novel species and records of fungal taxa from around the world. Mycosphere 12(1), 1101–1156, Doi 10.5943/mycosphere/12/1/14
