Colletotrichum pandanicola Tibpromma & K.D. Hyde

Tibpromma, Saowaluck, Hyde, Kevin D., Bhat, Jayarama D., Mortimer, Peter E., Xu, Jianchu, Promputtha, Itthayakorn, Doilom, Mingkwan, Yang, Jun-Bo, Tang, Alvin M. C. & Karunarathna, Samantha C., 2018, Identification of endophytic fungi from leaves of Pandanaceae based on their morphotypes and DNA sequence data from southern Thailand, MycoKeys 33, pp. 25-67 : 43-45

Colletotrichum pandanicola Tibpromma & K.D. Hyde sp. nov. Figure 15

Etymology.

name referring to the host genus ( Freycinetia ).

Holotype.

MFLU 18-0003

Description.

Colonies on PDA attaining 9 cm diam. in 7 days at room temperature, dark-grey. Sexual morph Undetermined. Asexual morph Conidiophores hyaline, smooth-walled, cylindrical to slightly inflated. Conidia 9-18 µm high, 4-8 µm diam. (= 13.39 × 5.35 µm, n = 20), hyaline, cylindrical with rounded ends tapering slightly towards the base, smooth, septate, guttulate.

Culture characteristics.

Colonies on PDA (Figure 2, PE09), superficial, white in the beginning and later becoming dark-grey, circular, entire edge, smooth, flossy, velvety and raised on surface media; reverse dark. Sporulating in culture after 1 month.

Material examined.

THAILAND, Chumphon, Pathio District, on healthy leaves of Pandanus sp. ( Pandanaceae ), 1 December 2016, S. Tibpromma PE09 (MFLU 18-0003, holotype); GZAAS 16-0145, paratype, ex-type living cultures, MFLUCC 17-0571.

GenBank numbers.

ITS=MG646967, β-tubulin =MG646926, GAPDH= MG646931, CHS-1=MG646935, ACT=MG646938.

Notes.

Colletotrichum pandanicola is introduced here as a new species in the gloeosporioides species complex based on morphological and phylogenetic data. The phylogenetic analysis shows that this new taxon is well-separated from other known Colletotrichum species (Figure 14). The authors also compared nucleotides of β-tubulin, GAPDH, CHS-1 and ACT and found that there are differences between Colletotrichum tropicale and this new species (β-tubulin 7 bp, GAPDH 11 bp, CHS-1 7 bp and ACT 3 bp).