Distoseptisporales » Distoseptisporaceae » Distoseptispora

Distoseptispora tectonigena

Distoseptispora tectonigena Doilom & K.D. Hyde, in Hyde et al., Fungal Diversity 80: 222 (2016)

Index Fungorum number: IF552224         Facesoffungi number: FoF01878


Sexual morph: Undetermined. Asexual morph: Colonies on natural substrate, superficial, numerous, hairy, dark brown, scattered, single or in groups. Conidiophores up to 110μm long, 5–11μm wide, macronematous, mononematous, simple, erect, straight to slightly curved, septate, slightly constricted at the septa, pale brown to dark brown, 2–6- septate,cylindrical.Conidiogenouscells 4–10 × 2–5.5μm, monoblastic, integrated, terminal, lageniform or cylindrical, brown, smooth, with lageniform or doliiform.Conidia (83–)148–225(–360) (rostrum included) × (10–)11–12(–13) μm thick (x̄ = 170 × 11μm, n = 30), 2.5–6μm wide at the truncate base (rostrum), older conidia 20–46-distoseptate, flexuous, cylindric-obclavate, elongated, straight or slightly curved, verruculose, rounded at apex, sometimes percurrently proliferating 5–10 times at apex, obconically truncate at base, dark reddish-brown and slightly paler towards the apex, thick-walled, smooth, secession schizolytic. 


Culture characteristics: Conidia germinating on PDA within 24 h. Germ tubes produced at the apex and other cells of conidia. Colonies on MEA reaching 6–13μm  diam. after 7 days in the dark at 25 °C (`x = 9.9μm, n = 5), edge entire to undulate, flat or effuse, velvety, aerial, medium sparse, grey (7F1) from both above and below. 


Habitat: -


Known hosts: -


Known distribution: -


Material examined: Thailand, Chiang Rai Province, Mae Lao District, on dead twig of Tectona grandis (Lamiaceae), 12 March 2012, M. Doilom (MFLU 15-3418, holotype), ex-type living cultures MFLUCC 12-0292, MKT 033, ICMP 21157.  


Notes: Although phylogenies reveal a close affinity between D. fluminicola, D. tectonae and D. tectonigena. Distoseptispora tectonigena differs from D. fluminicola and D. tectonae by its conidiophores and conidial dimensions,conidial septation and apex of conidia as well as by phylogenetic analyses. Conidiophores of D. tectonigena are longer than those of D. tectonae and D. fluminicola. Its conidia are longer and narrower than D.tectonae, shorterand narrower than D. fluminicola. The conidia have more septa than those of D. tectonae and D. fluminicola. The conidial apex of D. tectonigena is sometimes rounded like that of D. tectonae, but sometimes D. tectonigena produces an annellidic apex.


Figure X. Distoseptispora tectonigena (holotype). a, b Colonies on dead twig. c Conidiophores. d, e Conidia attached to conidiophores. f–i Conidia. j, k Percurrently proliferating apex of conidia. l Germinated conidium. m Colony on PDA after 7 months. Scale bars a = 200μm, b = 100μm, d–h = 20μm


Reference: Hyde KD, Hongsanan S, Jeewon R, Bhat DJ, et al. (2016) taxonomic and phylogenetic contributions to fungal taxa – Fungal diversity notes 367–490. Fungal Divers 80: 1–270.



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"The future of specialist fungi in a changing climate: baseline data for generalist and specialist fungi associated with ants Rhododendron species and Dracaena species"

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