Colletotrichum jiangxiense F. Liu & L. Cai

Ma, Xiaoya, Nontachaiyapoom, Sureeporn, Jayawardena, Ruvishika S., yde, Kevin D., Gentekaki, Eleni, Zhou, Sixuan, Qian, Yixin, Wen, Tingchi & Kang, Jichuan, 2018, Endophytic Colletotrichum species from Dendrobium spp. in China and Northern Thailand, MycoKeys 43, pp. 23-57 : 39

Colletotrichum jiangxiense F. Liu & L. Cai Figure 9

Description.

Sexual morph not observed.

Sexual morph not observed. Asexual morph on PDA. Vegetative hyphae 1.3-2.1 µm diam (N=20), smooth-walled, septate, branched, hyaline. Setae and chlamydospores not observed. Conidiophores (12.7-) 13.5-21.4 (-23.4) × (1.9-) 2-3 (-3.2) µm (N=8), branched, hyaline. Conidia (8.6-) 9-12.4 (-13.2) × (3.5-) 3.6-4.4 (-4.5) µm (N=4), L/W = 2.6, ellipsoidal to cylindrical, smooth-walled, aseptate, one end more blunt than the other end, hyaline.

Cultures on PDA flat with entire margin. Growth rate: 0.4cm/day, with 18-days for sporulation. Aerial mycelia dense, cottony, pale to light brown, with brown outline ring close to the edge, mycelia in the middle dark brown, reverse white to light brown.

Notes.

Strains MFLUCC 14-0091 and MFLUCC 14-0092 were the same species as they grouped with high support (98ML/1.0BI/87MP). They formed a very close clade with the pathogen C. jiangxiense isolated from Camellia. However, different media were used in these two studies. Blastn researches with ITS sequences results in 100% identity with C. gloeosporioides strain SS1-MS1 (GenBank KP900279) isolated from Huperzia serrate in China ( Wang et al. 2016). GAPDH, ACT and TUB2 sequences of MFLUCC 14-0091 and MFLUCC 14-0092 are closest to C. kahawae subsp. ciggaro strain ICMP 18534 (GenBank JX009904) with 98% identity isolated from Kunzea ericoides in New Zealand, 99% identity with strain ICMP 12952 (GenBank JX009431) isolated from Persea Americana in New Zealand, and 99% identity with strain CO22-1 (GenBank KJ001124) isolated from Rubus glaucus in Colombia respectively ( Weir et al. 2012; Afanador-Kafuri et al. 2014). Conidia size reported for C. jiangxiense was 15.2 ± 1 × 5.2 ± 0.4 μm, which was larger and faster growing than the strains isolated in this study. There were 5bp differences between strain MFLUCC 14-0091 and C. jiangxiense . Here we name both of isolates from leaves of Dendrobium sp. 1 as C. jiangxiense .