Lasiodiplodia laeliocattleyae
Lasiodiplodia laeliocattleyae (Sibilia) A. Alves, Fungal Biology 121: 457.2017.
Index Fungorum: IF815697; Facesoffungi: xxxxxx; MycoBank: MB815697.
Sexual morph: not observed. Asexual morph: Conidiomata stromatic, solitary, immersed, black, globose to subglobose. Paraphyses up to 95 mm long, 2−3 mm wide, hyaline, subcylindrical, aseptate. Conidiophores absent or reduced to conidiogenous cells. Conidiogenous cells 11−14 × 3−4 mm μm, holoblastic, cylindrical, hyaline, smooth. Conidia (18−)22.8(−27.4) × (11.7−)14.6(−17.2) μm (av. ± S.D. = 22.8 ± 1.4 × 14.6 ± 1.1 μm, n=250), L/W ratio = 1.6, hyaline, aseptate, obovoid to ellipsoid, contents granular, smooth, thick-walled, both ends broadly rounded, rarely becoming dark brown and septate with longitudinal striations when aged.
Culture characteristics: Colonies on PDA at 25 C with abundant aerial mycelium, initially white to smoke-grey, turning greenish grey on the surface and reverse, becoming dark slate blue with age.
Representative isolate: Portugal, Beira Littoral, Requeixo near Aveiro, on dead branches of Quercus suber, Feb. 2002, A. Alves, ex-holotype CBS 167.28.
Hosts: Laeliocattleya, on living leaves and pseudobulbs (Sibilia 1927); Mangifera indica (Ismail et al. 2012; Marques et al. 2013; Rodríguez-Gálvez et al. 2017); Cocos nucifera (Rosado et al. 2016).
Known distribution: Italy (Sibilia 1927), Brazil (Marques et al. 2013; Rosado et al. 2016), Egypt (Ismail et al. 2012) and Peru (cur- rent study).
GenBank Numbers: ITS KU507487; tef1-a KU507454
Notes: The phylogenetic result showed the strain CBS 130992 clustered with the ex-type (CBS 167.28) of Lasiodiplodia laeliocattleyae, and therefore correspond to the same species.
References:
Ismail AM, Cirvilleri G, Polizzi G, Crous PW, Groenewald JZ, Lombard L (2012) Lasiodiplodia species associated with dieback disease of mango (Mangifera indica) in Egypt. Australasian Plant Pathology 41: 649–660.
Marques MW, Lima NB, Morais Jr MA, Barbosa MAG, Souza BO, Michereff SJ, Phillips AJL, Câmara MPS (2013) Species of Lasiodiplodia associated with mango in Brazil. Fungal Diversity 67: 181–193.
Rodríguez-Gálvez E, Guerrero P, Barradas C, Crous PW & Alves A (2017) Phylogeny and pathogenicity of Lasiodiplodia species associated with dieback of mango in Peru. Fungal biology 121: 452–465.
Rosado AWC, Machado AR, Freire FO, Pereira OL (2016) Phylogeny, identification and pathogenicity of Lasiodiplodia associated with postharvest stem-end rot of coconut in Brazil. Plant Disease 100: 561–568.