Lasiodiplodia microconidia
Lasiodiplodia microconidia Y. Zhang ter & S. Lin, Mycological Progress 18: 693. 2019.
Index Fungorum: IF 820998; MycoBank: MB 820998.
Colony sporulating on pine needles and SNA. Asexual morph: Conidiomata up to 500 μm diam., stromatic, solitary, immersed and superficial, ash gray to dark gray. Paraphyses up to 90 × 3 μm, hyaline, branched. Conidiophores absent or reduced to a supporting cell. Conidiogenous cells up 5 μm long, 2 μm wide, holoblastic, discrete, cylindrical, hyaline, smooth. Conidia (18–) 19–22 (–23) × 10–15 μm (av. = 20.8 × 13.2 μm, n=50), L/W ratio = 1.5, hyaline, aseptate, smooth, thick-walled, ellipsoidal, both ends broadly rounded, becoming dark brown with septate and longitudinal striations when aged. Sexual morph: not observed.
Culture characteristics: Colonies reaching 45 mm diam. on MEA after 2 d in the dark at 28 °C, initially white, becoming gray after 15 days.
Representative isolate: Laos, Vientiane, near the international airport, Aquilaria crassna, Oct. 2012, leg. X. Sun, holotype HMAS 255198, CGMCC 3.18485 (ex-type culture).
Hosts: Aquilaria species (Wang et al. 2019).
GenBank Numbers: ITS KY783441; tef1-a KY848614; RPB2 KY848561.
Notes: Phylogenetically, L. microconidia closely related to L. tropica, L. lignicola, L. tenuiconidia, L. sterculiae, L. chinensis and L. pseudotheobromae, but can be distinguished from these species based on its morphology and tef1-α region.
References:
Wang Y, Lin S, Zhao L, Sun X, He W, Zhang Y, Dai YC (2019) Lasiodiplodia spp. associated with Aquilaria crassna in Laos. Mycological Progress 18, 683–701.
https://doi.org/10.1007/s11557-019-01481-7