Fungalpedia – Note 865, Valetoniellopsis

 

Valetoniellopsis. Samuels & M.E. Barr, Can. J. Bot.

Citation when using this data: Huang SK et al. 2021 (in prep.) – Fungalpedia, Ascomycota.

Index Fungorum, Facesoffungi, MycoBank, GenBank., Fig 1

Classification: Niessliaceae, Hypocreales, Hypocreomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi

Saprobic on leaves. Sexual morph: Ascomata perithecial, solitary or scattered, superficial, globose to subglobose, or collapsing as cupuliform, reddish brown or brown, multiloculated, membranaceous, tuberculate, glabrous or with brown, septate, lax setae at apex, ostiolate, periphysate. Peridium composed of membranaceous, brown to hyaline cells of textura angularis to textura prismatica. Paraphyses absent. Asci 8-spored, unitunicate, clavate, pedicellate or sessile, apex rounded or blunt, apical ring absent, evanescent. Ascospores uni- or bi-seriate, hyaline, cylindrical to oblong, straight or slightly curved, 1-septate, smooth-walled, guttulate. Asexual morph: Hyphomycetous. Conidiophores mononematous, macronematous, hyaline, unbranched, straight. Conidia terminal, ellipsoidal, aseptate, hyaline, smooth-walled, guttulate (adapted from Samuels & Barr 1997).

Notes – The monotypic Valetoniellopsis is typified by V. laxa and placed in Niessliaceae (Samuels & Barr 1997). It is similar to Circinoniesslia with setose ascomata and acremonium-like asexual morph (Samuels & Barr 1997). Subsequently, the type V. laxa (CBS:191.97) was sequenced and nested in Niessliaceae (Tang et al. 2007, Vu et al. 2019). In this study, Valetoniellopsis is sister to Trichosphaerella in Niessliaceae.

Type species: Valetoniellopsis laxa Samuels & M.E. Barr, Canad. J. Bot. 75(12): 2175 (1998) [1997].

Other accepted species: Species Fungorum – search Valetoniellopsis.

image

 

Figure 1 – Valetoniellopsis laxa: a–j (BPI-748357, holotype); k (redrawn from Samuels & Barr 1997). a Material. b Ascomata on the host. c Ascoma. d Ascomata cross section. e A locule.
f Peridium. g–i Asci. j Ascospores. k Conidiophores and conidia. Scale bars: c–d = 100 µm, e = 50 µm, f, k = 20 µm, g–i = 10 µm, j = 5 µm.

 

References

Samuels GJ, Barr ME. 1997 – Notes on and additions to the Niessliaceae (Hypocreales). Canadian Journal of Botany 75(12), 2165–2176.

Tang AMC, Jeewon R, Hyde KD. 2007 – Phylogenetic utility of protein (RPB2, β-tubulin) and ribosomal (LSU, SSU) gene sequences in the systematics of Sordariomycetes (Ascomycota, Fungi). Antonie van Leeuwenhoek 91(4), 327–349. Doi 10.1007/s10482-006-9120-8

Vu D, Groenewald M, De Vries M, Gehrmann T et al. 2019 – Large-scale generation and analysis of filamentous fungal DNA barcodes boosts coverage for kingdom fungi and reveals thresholds for fungal species and higher taxon delimitation. Studies in mycology 92, 135–154.

 

Entry by

Shi-Ke Huang, State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China, The Engineering Research Center of Southwest Bio-Pharmaceutical Resources, Ministry of Education, Guizhou University, Guiyang 550025, Guizhou Province, China, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand, The Mushroom Research Centre, Guizhou University, Guiyang 550025, China

 

Published online 14 September 2021

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