Fungalpedia – Note 1878, Juglanconidaceae
Juglanconidaceae. Voglmayr & Jaklitsch.
Citation when using this data: Hyde KD et al. 2020 (in prep.) – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank
Classification: Diaporthales, Diaporthomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi
Saprobic on dead corticated twigs and branches of Juglandaceae attached to trees. Sexual morph: Pseudostromata comprising an inconspicuous ectostromatic disc which are erumpent from bark. Central column beneath the disc, nearly conical. Perithecia surrounding the central column, with nearly globose base, with long lateral ostioles that emerge at the margin or within an ectostromatic disc. Asci 8-spored, clavate to fusoid, with a J-, apical ring. Ascospores overlapping 1–2-seriate, hyaline, broadly fusiform, bicelled, slightly curved, guttulate, with or without gelatinous appendages. Asexual morph: Coelomycetous. Conidiomata acervular, with ectostromatic disc and conical central column. Conidiophores aseptate or septate, smooth, hyaline to brownish, occasionally branched. Conidiogenous cells annellidic. Conidia initially hyaline, becoming brown with age, various in shape, pip-shaped, narrowly ellipsoid, elongate to suballantoid, unicellular, often truncate with scar at the base, with gelatinous sheath and irregular verrucae on the inner surface of the conidial wall (adapted from Voglmayr et al. 2017).
Notes – Juglanconidaceae was erected by Voglmayr et al. (2017) to accommodate four Melanconium species on hosts of Juglandinae, viz. three species (Juglanconis appendiculata, J. juglandina, J. oblonga) on various Juglans species, and one species (J. pterocaryae) from Pterocarya spp. (Voglmayr et al. 2019b). Du et al. (2017) introduced Melanosporellaceae to accommodate Melanosporella typified by M. juglandium. It was shown that the strains Juglanconis juglandina (MC1, ME16, ME22, ME23, MC3) from Austria and Spain and strains Melansporella juglandium (CFCC 51727, CFCC 51728, CFCC 51729) from China clustered together in the multigene phylogenetic analyses and share close morphological features (Du et al. 2017, Fan et al. 2018). Thus, Senanayake et al. (2018) treated Melanosporellaceae as a synonym of Juglanconidaceae. Juglanconidaceae seems specific to Juglandaceae tree species and cause black pustular dieback (Senanayake et al. 2018).
Type genus: Juglanconis Voglmayr & Jaklitsch.
References
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