Neosetophoma
Neosetophoma Gruyter, Aveskamp & Verkley, in de Gruyter, Woudenberg, Aveskamp, Verkley, Groenewald & Crous, Mycologia 102(5): 1075 (2010)
= Septochora Höhn., Ber. dt. bot. Ges. 35(3): 254 (1917) Crous & M.J. Wingf., in Crous et al., Persoonia 35: 283 (2015)
Citation when using this entry, Chen C. et al. in prep. – An updated monograph of Coelomycetes, Mycosphere
Index Fungorum, Facesoffungi number, MycoBank, GenBank
Classification: Phaeosphaeriaceae, Pleosporales, Dothideomycetes, Ascomycota, Fungi
Endophytic or saprobic on host plants. The sexual morph is characterised by ascomata which are dark brown to black, immersed to erumpent, discrete to integrated, globose to subglobose, or turbinate, small-walled and ostiolate. The peridium is constituted by dark brown to brown, or to reddish-brown, small and thick-walled cells of textura angularis or textura epidermoidea. The hamathecium is septate, filamentous, cellular pseudoparaphyses, and embedded in a gelatinous matrix. Asci are 8-spored, fissitunicate, bitunicate, short-pedicellate, cylindro-clavate to obclavate or clavate, apex rounded, and with an ocular chamber. Ascospores are 1–2-seriate, overlapping, 1–5-septate, constricted at the septum, hyaline when immature, pale brown at maturity, fusiform, straight or slightly curved, guttulate, smooth-walled (Hyde et al. 2018, 2020, Tennakoon et al. 2020, Thambugala et al. 2017, Tibpromma et al. 2017, Zhang et al. 2024). The asexual morph is characterized by the superficial to subperidermal pycnidial conidiomata, which are dark brown to black, separate, or confluent, unilocular and globose. The ostiole is single, circular, papillate or with a long neck, located in the centre. The pycnidial wall is composed of textura angularis with thick-walled, brown to dark-brown cells. Conidiophores are reduced to conidiogenous cells. Conidiogenous cells are phialidic, enteroblastic, determinate, discrete, doliiform to ampulliform, smooth-walled and hyaline. Conidia are slightly yellowish to pale brown, aseptate to septate, not or constricted at the septum, ellipsoidal to cylindrical, straight to slightly curved, guttulate or not (Gruyter et al. 2010, Liu et al. 2015, Wijayawardene et al. 2016).
Type species: Neosetophoma samarorum (Desm.) Gruyter et al. Mycologia 102(5): 1075 (2010)
≡ Phoma samararum Desm., Pl. Crypt. Nord France, Edn 1 7: no. 349 (1828)
= Septochora samarorum (Desm.) Höhn., Ber. dt. bot. Ges. 35(3): 254 (1917)
= Phomopsis samarorum (Desm.) Höhn., Hedwigia 62: 87 (1920)
= Septoria samarorum (Desm.) Wollenw. & Hochapfel, Z. ParasitKde 8: 604 (1936)
= Diplodina samarorum (Desm.) Nevod., Fungi of the U.S.S.R. 1: no. 14 (1952)
= Stagonospora samarorum (Desm.) Boerema, Persoonia 6(1): 25 (1970)
= Phoma samarorum f. pteleae Oudem., Ned. kruidk. Archf, 3 sér. 2(3): 740 (1902)
Notes: Neosetophoma was introduced by de Gruyter et al. (2010) based on N. samarorum as the type species, which was found on Fraxinus excelsior. Neosetophoma samarorum has been reported as a pathogen causing leaf spots on various hosts (Phookamsak et al. 2014). Neosetophoma garethjonesii is the first report of the sexual morph of Neosetophoma which was introduced by Tibpromma et al. (2017). Subsequently, Hyde et al. (2018) also introduced three sexual morph species (N. guiyangensis, N. shoemaker and N. xingrensis). Zhang et al. (2024) introduced N. trachycarpi based on LSU, SSU, tef-1α and rpb2 sequences which also only have sexual morph. Currently, there are 25 species listed in Neosetophoma in Species Fungorum (August 2024). There are over 450 sequences available for Neosetophoma in GenBank (August 2024). The updated taxonomic treatment of this genus is Phaeosphaeriaceae, in Pleosporales (Dothideomycetes) (Wijayawardene et al. 2022)
For all accepted species: see Species Fungorum, and search Neosetophoma.
Neosetophoma samararum (Material examined: Iran, Golestan Province, Golestan, Gomishan wetland, on soil, 23 May 2014, Moslem Papizadeh, IBRC-M 30176). a–c Conidiomata. d–f Conidiogenous cells. g–i conidia. Scale bars: a = 100 μm, b = 20 μm, c–i = 5 μm, d–h = 10 μm (Originally published in Wijayawardene et al. (2016) and republished with authority)
References
De Gruyter J, Woudenberg JHC, Aveskamp MM, Verkley GJM et al. 2010 – Systematic reappraisal of species in Phoma section Paraphoma, Pyrenochaeta and Pleurophoma. Mycologia 102(5), 1066–1081.
Hyde KD, Chaiwan N, Norphanphoun C, Boonmee S et al. 2018 – Mycosphere notes 169–224. Mycosphere 9, 271–430.
Hyde KD, Dong Y, Phookamsak R, Jeewon R et al. 2020 – Fungal diversity notes 1151–1276: taxonomic and phylogenetic contributions on genera and species of fungal taxa. Fungal diversity 100, 5–277.
Liu JK, Hyde KD, Gareth EBG, Ariyawansa HA et al. 2015 – Fungal diversity notes 1–110: taxonomic and phylogenetic contributions to fungal species. Fungal Diversity 72, 1–197.
Phookamsak R, Liu JK, McKenzie EHC, Manamgoda DS et al. 2014 – Revision of Phaeosphaeriaceae. Fungal Diversity 68, 159–238.
Tennakoon DS, Thambugala KM, Wanasinghe DN, Gentekaki E et al. 2020 – Additions to Haeosphaeriaceae (Pleosporales): Elongaticollum gen. nov., Ophiosphaerella taiwanensis sp. nov., Phaeosphaeriopsis beaucarneae sp. nov. and a new host record of Neosetophoma poaceicola from Musaceae. MycoKeys 70, 59–88.
Thambugala KM, Wanasinghe DN, Phillips AJL, Camporesi E et al. 2017 – Mycosphere notes 1–50: Grass (Poaceae) inhabiting Dothideomycetes. Mycosphere 8, 697–796.
Tibpromma S, Hyde KD, Jeewon R, Maharachchikumbura SSN et al. 2017 – Fungal diversity notes 491–602: taxonomic and phylogenetic contributions to fungal taxa. Fungal Diversity 83,1–261.
Zhang SN, Hyde KD, Jones EG, Yu XD et al. 2024 – Current insights into palm fungi with emphasis on taxonomy and phylogeny. Fungal Diversity, 1–247.
Wijayawardene NN, Hyde KD, Wanasinghe DN, Papizadeh M et al. 2016 – Taxonomy and phylogeny of dematiaceous coelomycetes. Fungal diversity 77, 1–316.
Wijayawardene NN, Hyde KD, Dai DQ, Sánchez-García ML et al. 2022 – Outline of Fungi and fungus-like taxa–2021. Mycosphere 13(1), 53–453.
Entry by Chao Chen1,2,3
Edited by Kevin D. Hyde1,3 & Ishara S. Manawasinghe1
1Innovative Institute for Plant Health, College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, Guangdong, P.R. China.
2Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand.
3Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, Thailand; School of Science, Mae Fah Luang University, Chiang Rai, Thailand.
Published online 2024-August 30.
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