Tubeufiales » Tubeufiaceae

Thaxteriellopsis

Thaxteriellopsis Sivan., Panwar & S.J. Kaur

Index Fungorum number: IF 5409; Facesoffungi number: FoF 01866

 

Saprobic on decaying woody substrata. Sexual morph: Ascomata superficial, seated on a subiculum, solitary, scattered, globose to subglobose, reddish-brown to dark brown. Setae multi-septate, thick-walled, brown to black, straight or slightly curved, covered with the whole ascomata. Peridium thick-walled, composed of several layers cells of textura angularis, with inner cells brown and outer cells dark brown. Hamathecium comprising numerous, filiform, septate, branched pseudoparaphyses. Asci 8-spored, bitunicate, cylindrical, pedicellate, apically rounded. Ascospores 2–3-seriate, fusiform to clavate, tapering towards rounded ends, straight or slightly curved, 5-septate, hyaline, smooth-walled. Asexual morph: Hyphomycetous, helicosporous. Conidiophores macronematous, mononematous, erect, arising as lateral branches from creeping hyphae, cylindrical, branched or unbranched, septate, pale brown to dark brown, smooth-walled. Conidiogenous cells holoblastic, mono- to polyblastic, integrated, sympodial, intercalary or terminal, cylindrical, pale brown to brown, smooth-walled. Conidia solitary, acropleurogenous, helicoid, tapering towards apex, rounded at tip, multi-septate, hyaline, smooth-walled. (Description from Lu et al. 2018).

 

Type species: Thaxteriellopsis lignicola Sivan., Panwar & S.J. Kaur

 

Notes: Boonmee et al. (2011) resurrected Thaxteriellopsis based on morphology and phylogeny, and designated an epitype for the type species, T. lignicola. The sexual and asexual morphs of T. lignicola were described by Boonmee et al. (2011) based on an epitype specimen and ex-epitype culture. Doilom et al. (2017) reported its asexual morph from decaying inner surface of bark of Tectona grandis based on molecular evidence. Lu et al. (2018) found another collection of this species from submerged wood in freshwater habitats and gave an updated description of sexual and asexual morphs. (Notes from Dong et al. 2020)

 

List of freshwater Thaxteriellopsis species

Thaxteriellopsis lignicola Sivan., Panwar & S.J. Kaur, Kavaka 4: 39 (1977) [1976]

Freshwater distribution: Thailand (Lu et al. 2018)

 

References

Boonmee S, Zhang Y, Chomnunti P, Chukeatirote E, Tsui CKM, Bahkali AH, Hyde KD (2011) Revision of lignicolous Tubeufiaceae based on morphological reexamination and phylogenetic analysis. Fungal Divers 51:63–102. https://doi.org/10.1007/s13225-011-0147-4

Doilom M, Dissanayake AJ, Wanasinghe DN, Boonmee S, Liu J-K, Bhat DJ, Taylor JE, Bahkali AH, McKenzie EHC, Hyde KD (2017) Microfungi on Tectona grandis (teak) in Northern Thailand. Fungal Divers 82:107–182. https://doi.org/10.1007/s13225-016-0368-7

Dong W, Wang B, Hyde KD, McKenzie EHC, Raja HA, Tanaka K, Abdel-Wahab MA, Abdel-Aziz FA, Doilom M, Phookamsak R, Hongsanan S, Wanasinghe DN, Yu X-D, Wang G-N, Yang H, Yang J, Thambugala KM, Tian Q, Luo Z-L, Yang J-B, Miller AN, Fournier J, Boonmee S, Hu D-M, Nalumpang S, Zhang H (2020) Freshwater Dothideomycetes. Fungal Divers 105:319–575. https://doi.org/10.1007/s13225-020-00463-5

Lu YZ, Liu JK (Jack), Hyde KD, Jeewon R, Kang JC, Fan C, Boonmee S, Bhat DJ, Luo ZL, Lin CG, Eungwanichayapant PD (2018) A taxonomic reassessment of Tubeufiales based on multi-locus phylogeny and morphology. Fungal Divers 92:131–344. https://doi.org/10.1007/s13225-018-0411-y

 

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