Pleosporales » Lentitheciaceae » Murilentithecium

Murilentithecium lonicerae

Murilentithecium lonicerae Phookamsak, Chaiwan, Wanas. & K.D. Hyde, Fungal Diversity 95: 17 (2019).

Index Fungorum number: IF555524         Facesoffungi number: FoF04966

 

Saprobic on Lonicera maackii. Sexual morph: Undetermined. Asexual morph: Conidiomata 95–150 μm high, 110–170 μm diam., pycnidial, semi-immersed, visible as raised, black dots on host surface, solitary, globose to subglobose, glabrous, uni-loculate, ostiolate at centre, with minute papilla, lacking periphyses. Conidiomata walls 5–15 μm diam., thin-walled, of unequal thickness, slightly thickened at the base, composed of 5–7 layers, of flattened, brown pseudoparenchymatous cells, slightly dark at the apex, arranged in textura angularis to textura prismatica. Conidiophores reduced to conidiogenous cells. Conidiogenous cells 8–15 × (3–)4–8 µm (x̄  = 11 × 5.5 μm, n = 35), enteroblastic, phialidic, rarely annellidic, discrete, determinate, hyaline, smooth, aseptate, cylindrical to doliiform, with narrow channel, minute collarette and periclinal wall thickening, arising from the inner cavity of pycnidial wall. Conidia (13.5–)14–17(–18.5) × 7–10(–12) µm (x̄  = 15.6 × 9.4 μm, n = 50), initially light brown to pale yellowish, aseptate, becoming reddish brown to dark brown, muriform, subglobose to obovoid, or turbinate, with truncate base, (1–)2–4 transverse septa, with several longitudinal sectors, not constricted at the septa, smooth-walled with minute guttules.

 

Culture characteristics: Colonies on PDA reaching 30–35 mm diam. after 3 weeks at 20–25 °C; colony from above, white-grey at the margin, grey at the centre; from below, white-grey at the margin, grey to dark grey at the centre, slightly radiated outwards colony; dense, circular, slightly raised to umbonate, surface smooth, with edge entire, floccose; not producing pigmentation in agar.

 

Habitat: on Lonicera maackii (Caprifoliaceae)

 

Known distribution: China

 

Material examined: CHINA, Yunnan Province, Kunming Institute of Botany, Lonicera maackii (Rupr.) Maxim. (Caprifoliaceae), 20 April 2017, R. Phookamsak, KIB035 (KUN-HKAS 102238, holotype), ex-type living culture, MFLUCC 18-0675 = KUMCC 18-0167 (KIB035IA), KUMCC 18-0168 (KIB035IB), KUMCC 18-0169 (KIB035IIA), KUMCC 18-0170 (KIB035IIB).

 

GenBank numbers: ITS = MK214370, LSU = MK214373, SSU = MK214376, TEF1-α = MK214379 (KUMCC 18-0167); ITS = MK359436, LSU = MK359441, SSU = MK359446, TEF1-α = MK359075 (KUMCC 18-0168); ITS = MK359437, LSU = MK359442, SSU = MK359447, TEF1-α = MK359076 (KUMCC 18-0169); ITS = MK359438, LSU = MK359443, SSU = MK359448, TEF1-α = MK359077 (KUMCC 18-0170).

 

Notes: Murilentithecium lonicerae can be distinguished from M. clematidis and M. rosae in having reddish brown to dark brown, subglobose to obovoid, or turbinate conidia, with truncate base, (1–)2–4 transverse septa, with several longitudinal sectors. Murilentithecium clematidis has pale brown to brown, oblong to clavate conidia, with 3–5 transverse septa, and 2–5 longitudinal septa. Murilentithecium rosae has yellowish brown to dark brown, ovoid conidia, with 3 transverse septa, and 1–2 longitudinal septa.