Mycoleptodiscus endophyticus 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 : 46-47

Mycoleptodiscus endophyticus Tibpromma & K.D. Hyde sp. nov. Figure 17

Etymology.

Named after its original habitat as an endophytic fungus.

Holotype.

MFLU 18-0001

Culture characteristics.

Colonies on PDA (Figure 2, FE101), superficial, dark olivaceous with circular rings with filiform edge and rough and raised on media surface; reverse dark olivaceous. Mycelium composed of branched, pale-brown to dark-brown, thick-walled, guttulate, hyphae, with cells sub-globose to ovoid in shape. Not sporulating in culture.

Material examined.

THAILAND, Ranong, Muang, on healthy leaves of Freycinetia sp. ( Pandanaceae ), 3 December 2016, S. Tibpromma FE101 (MFLU 18-0001, holotype); HKAS100847, paratype, ex-type living cultures, MFLUCC 17-0545 = KUMCC 17-0263.

GenBank numbers.

LSU=MG646946, SSU=MG646978, TEF1=MG646985.

Notes.

Mycoleptodiscus Ostaz. (1968) belongs to Magnaporthaceae , Magnaporthales. Since 1968, there have been 17 records of Mycoleptodiscus in Index Fun gorum. Most of these species were described without molecular data. In this study, a new species Mycoleptodiscus endophyticus is introduced, based on culture characteristics and phylogenetic analysis (100 % in ML). Mycoleptodiscus endophyticus was found as an endophytic fungus on leaves of Freycinetia sp; Mycoleptodiscus freycinetiae Whitton, K.D. Hyde & McKenzie was found as a saprobic fungus on the same host but there was no molecular data available to confirm this identification. The authors were unable to compare the morphological differences between the new taxon and Mycoleptodiscus freycinetiae , because only culture characteristics are presented here for this new taxon (Fig. 17).