Pleosporales » Torulaceae » Torula

Torula fici

Torula fici P.W. Crous

Index Fungorum number: IF 816154Facesoffungi number: FoF 02712

Etymology: Named after the host genus from which it was collected, Ficus

Holotype: CBS H-22276

 

Saprobic on submerged decaying wood. Sexual morph: Undetermined. Asexual morph: Colonies effuse on the natural substrate, scattered, hairy, dark brown. Mycelium immersed to superficial, composed of hyaline, becoming brown closer to fertile region, septate, branched hyphae. Conidiophores macronematous mononematous, subcylindrical, erect, septate, smooth, straight, or slightly flexuous, dark brown to black. 5–15 μm long, 3–7 μm wide. Conidiogenous cells holoblastic, mono-to polyblastic, integrated, terminal, doliiform, pale brown. Conidia in branched chains, dry, acrogenous, brown to dark brown, subhyaline at terminal cell, 1–3-septate, constricted at septa, verrucose, easily separating, 11–23 μm ( = 17 μm, SD = 6, n = 30) long, 5.5–6.5 μm ( = 6 μm, SD = 0.5, n = 30) wide. (Descriptions from Su et al. 2018)

 

Material examined: CHINA, Yunnan Province, submerged decaying wood in Langcang River, April 2015, H.Y. Su, HL 1–13–1 (MFLU 17–1400), living culture, MFLUCC 16–1348, KUMCC 15–0315; submerged decaying wood in Jinsha River, April 2015, S.M. Tang, JSJ H 24–12–2 (MFLU 17–1401), living culture, MFLUCC 16–1280, KUMCC 15–0400; X.Y. Liu, JSJ H 24–18–2, living culture, MFLUCC 16–1259, KUMCC 15–0404; Z.L. Luo, JSJ H 3–19–1 (MFLU 17–1402), living culture, KUMCC 15–0428.

 

Notes: Crous et al. (2015) introduced Torula fici which was collected from Ficus in Europe. Li et al. (2017) re-examined T. fici collected from Chromolaena odorata in Thailand. In our study, four isolates of the fungus were recovered from submerged decaying wood collected in Yunnan Province, China. Morphological characters such as macronematous conidiophores, mono- to polyblastic, doliiform conidiogenous cells and dry, acrogenous, brown, constricted at septa, verrucose conidia in branched chains, and size of conidiophores and conidia fit well within the species concept of Torula fici. According to the phylogenetic study, our strain clusters with Torula fici (CBS 595.96, KUMCC 16–0038, KUMCC 16–0035) with highly support value (100% ML/1.00 PP). We therefore identify our isolate as Torula fici based on morphology and phylogeny, and this is the first record for China. (Notes from Su et al. 2018)

 

Freshwater distribution: China (Su et al. 2018)

 

Fig. 5

Fig 1. Torula fici (MFLU 17–1400). a, b. Colonies on wood. c–e. Conidiophores with conidia. f–l. Conidia. m, n. Colonies on PDA from surface and reverse. Scale bars: c, d, f–j = 15 μm, e, k, l = 10 μm. (Su et al. 2018)

 

References

Crous PW, Carris LM, Giraldo A, Groenewald JZ, Hawksworth DL, Hernández-Restrepo M, Wood AR (2015) The genera of fungi—fixing the application of the type species of generic names—G2: Allantophomopsis, Latorua, Macrodiplodiopsis, Macrohilum, Milospium, Protostegia, Pyricularia, Robillarda, Rotula, Septoriella, Torula and Wojnowicia. IMA Fungus 6:163–198

Li JF, Phookamsak R, Jeewon R, Bhat DJ, Mapook A, Camporesi E, Shang QJ, Chukeatirote E, Bahkali AH, Hyde KD (2017) Molecular taxonomy and morphological characterization reveal new species and new host records of Torula species (Torulaceae, Pleosporales). Mycol Prog 16:447–461

Su XJ, Luo ZL, Jeewon R, Bhat DJ, Bao DF, Li WL, Hao YE, Su HY, Hyde KD (2018) Morphology and multigene phylogeny reveal new genus and species of Torulaceae from freshwater habitats in northwestern Yunnan, China. Mycol Prog 17:531–545

 

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