Colletotrichum endophyticum Manamgoda, Udayanga, L. Cai & K.D. Hyde [as ‘endophytica‘]

Classification – Glomerellaceae, Glomerellales, Hypocreomycetidae, Sordariomycetes, Ascomycota

Index Fungorum number – IF565248; Facesoffungi number – FoF 14040

Other useful webpages – outlineoffungi.org; fungalgenera.org; Sordariomycetes.org; coelomycetes.org

Description – Associated with leaf spot of Acacia confusa. Sexual morph: undetermined. Asexual morph: ceolomycetous Conidiophores 10–12 × 3–5 μm (av. 10 × 4 μm, n = 30), long, cylindrical or clavate, unbranched. Conidia 10–15 × 5–10 μm (av. 12 × 6 μm, n = 50), long, one-celled, cylindrical, appressoria not produced.

Culture characteristics – Colonies on PDA reaching 67 mm diam. in 7 days at 25 ℃, growth rate per day 5.00 ± 0.50 mm/d, white to grey, reverse dark grey to black at the centre, aerial mycelium dense and raised.

Material examined – China, Guangdong Province, on Acacia confusa Merr., (Fabaceae), Shenzhen Botanical Garden, 30 November 2020, J.W. Chen, Z.L. Mai and C. Chen (dried cultures ZHKU 21-0070 and ZHKU 21-0071), living culture ZHKUCC 21-0077, ZHKUCC 21-0078, new host record.

GenBank accession numbers – gapdh: OL672735, OL672736; act: OL672715, OL672716; chs-1: OL672725, OL672726; tub2: OL739534, OL739533.

Notes – See Manawasinghe et al. (2022).

Colletotrichum endophyticum (ZHKUCC 21-0077, new host record). a Upper view on PDA after seven days. b Reverse view on PDA after seven days. c–e Conidia. f–h Conidiophores. Scale bars: f–h = 10 µm.

Maximum likelihood consensus tree inferred from the combined ITS, gapdh, act, chs-1 and tub2 sequence data for Colletotrichum endophyticum, C. fructicola, C. pandanicola, and C. syzygicola. The tree is rooted to C. boninense (CBS123755 and ICMP 18596). Maximum parsimony and maximum likelihood bootstrap support values equal to or greater than 50% are given at the nodes and branches (MP/ML). The new isolates from South China region are indicated in red.