Biscogniauxia

Fungalpedia – Note 1247, Biscogniauxia

 

Biscogniauxia Kuntze

Citation when using this data: Hyde KD et al. 2020 (in prep.) – Fungalpedia, Ascomycota.

Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig 1

Classification: Graphostromataceae, Xylariales, Xylariomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi

Biscogniauxia species develop within the bark and emerge via the overlying bark. A periconiella-like asexual morph is associated with several Biscogniauxia species and sometimes vary from nodulisporium-like to periconiella-like (Stadler et al. 2013). The genus appears paraphyletic together with morphologically dissimilar genera, such as Camillea, Obolarina and Graphostoma (Pažoutová et al. 2010, Raimondo et al. 2016, Daranagama et al. 2018). A case could be made to merge all these genera, were it not for the fact that over 90% of the species remain to be studied by multi-gene genealogies and of over 80% only the less relevant rDNA sequences are extant. A new species, Biscogniauxia mangiferae, is illustrated in this entry.

Type species: Biscogniauxia nummularia (Bull.) Kuntze.

Other accepted species: Species Fungorum – search Biscogniauxia.

 

 

Figure 1 – Biscogniauxia mangiferae (MFLU 18-0827, holotype). a, b Stroma on the host. c, d Cross section of stromata showing the ascoma and ostiole. e-g Asci. h, i J+, apical ring in Melzer’s reagent. j Paraphyses. k-n Ascospores. Scale bars: b, c = 1000 μm, d = 500 μm, e-h = 20 μm, i, j = 10 μm, k-n = 10 μm.

 

References

Daranagama DA, Hyde KD, Sir EB, Thambugala KM et al. 2018 – Towards a natural classification and backbone tree for Graphostromataceae, Hypoxylaceae, Lopadostomataceae and Xylariaceae. Fungal Diversity 88, 1–165.

Pažoutová S, Šrůtka P, Holuša J, Chudíčková M, Kolařík M. 2010 – Diversity of xylariaceous symbionts in Xiphydria woodwasps: role of vector and a host tree. Fungal Ecology 3, 392– 401.

Raimondo ML, Lops F, Carlucci A. 2016 – Charcoal canker of pear, plum, and quince trees caused by Biscogniauxia rosacearum sp. nov. in Southern Italy. Plant Disease 100, 1813–1822.

Stadler M, Kuhnert E, Persŏh D, Fournier J. 2013 – The Xylariaceae as model example for a unified nomenclature following the ‘‘One fungus-one name’’ (1F1N) concept. Mycology: An International Journal on Fungal Biology 4, 5–21.

 

Entry by

Kevin David Hyde, Institute of Plant Health, Zhongkai University of Agriculture and Engineering, Haizhu District, Guangzhou 510225, P.R. China, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, Mushroom Research Foundation, 128 M.3 Ban Pa Deng T. Pa Pae, A. Mae Taeng, Chiang Mai 50150, Thailand, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand, Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan, P.R. China, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand, World Agroforestry Centre, East and Central Asia, Kunming 650201, Yunnan, P.R. China

 

Published online 28 February 2020

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