Diaporthe 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 : 41

Diaporthe pandanicola Tibpromma & K.D. Hyde sp. nov. Figure 13

Etymology.

Name referring to the host genus on which the fungus was first discovered ( Pandanus ).

Holotype.

MFLU 18-0006

Culture characteristics.

Colonies on PDA (Figure 2, PE77), superficial, white, circular with entire edge, smooth and raised on surface media, flossy and velvety; reverse yellow-white, 9 cm diam. in 10 days. Generative hyphae simple-septate, branched, sub-hyaline, cells with guttules, thin-walled, 1.5-7 µm wide. Not sporulating in culture (Figure 13).

Material examined.

THAILAND, Chumphon, Pathio District, on healthy leaves of Pandanus sp. ( Pandanaceae ), 1 December 2016, S. Tibpromma PE77 (MFLU 18-0006, holotype); HKAS100858, paratype, ex-type living cultures, MFLUCC 17-0607 = KUMCC 17-0297.

GenBank numbers.

ITS=MG646974, β-tubulin =MG646930, ACT=MG646930.

Notes.

Diaporthe species are plant pathogens, endophytes or saprobes ( Carroll 1986; Garcia-Reyne et al. 2011; Udayanga et al. 2011, 2012, 2014, Hyde et al. 2014). Here, a new species Diaporthe pandanicola is introduced based on phylogeny support. Based on phylogenetic analysis, the new species was well-separated from closely related species of Diaporthe (61% in ML, 0.97 in PP). However, this isolate is an endophytic fungus and did not sporulate in culture during 5 months (Figure 13).