Poaceascoma

Fungalpedia – Note 2444, Poaceascoma

Poaceascoma. Phookamsak & K.D. Hyde.

Citation when using this data: Dong W et al. 2020 – Fungalpedia, Ascomycota.

Index Fungorum, Facesoffungi, MycoBank, GenBank

Classification: Lentitheciaceae, Pleosporales, Pleosporomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi

Saprobic on submerged bamboo, wood in freshwater or intertidal, dead stem in terrestrial habitats. Sexual morph: Ascomata solitary to gregarious, semi-immersed to erumpent, uniloculate, globose to subglobose, with or without setose, black, with a central ostiole, with short to long papilla. Peridium thick walled, of equal thickness, composed of several layers of dark brown to black, pseudoparenchymatous cells. Pseudoparaphyses dense, cellular, hyaline, septate, persistent, anastomosing above the asci, embedded in a gelatinous matrix. Asci 8-spored, bitunicate, fissitunicate, elongate-cylindrical, short pedicellate, apically rounded with an ocular chamber. Ascospores fasciculate, spirally arranged within the ascus, filiform, curved, hyaline, multiseptate, smooth, thin-walled, without sheath or appendage, ascospores often longer than asci (Phookamsak et al. 2015a). Asexual morph: Undetermined.

Notes: Poaceascoma was introduced to accommodate ophiosphaerella-like species associated with Poaceae, which form semi-immersed to erumpent, setose ascomata with short to long necks and filiform ascospores spirally arranged in asci (Phookamsak et al. 2015a). Poaceascoma is a well-studied genus with sequence data available for all species in GenBank; they formed a monophyletic clade in the family with high bootstrap support (Phookamsak et al. 2015a; Luo et al. 2016a; Hyde et al. 2017, 2018a). Some genera also form filiform ascospores in Dothideomycetes, such as Acanthophiobolus, Leptospora, Ophiobolus and Ophiosphaerella (Shoemaker 1976; Boonmee et al. 2011; Zhang et al. 2012b; Boonmee et al. 2014). Acanthophiobolus differs from these genera in having rather smaller, superficial, apapillate ascomata (Boonmee et al. 2011, 2014). Leptospora is distinct in having possesses glabrous ascomata which often stain host tissues red or purple (Hyde et al. 2016b). Ophiobolus and Ophiosphaerella nested in Phaeosphaeriaceae (Phookamsak et al. 2014), which was phylogenetically distant from Poaceascoma (Lentitheciaceae).

Poaceascoma aquaticum Z.L. Luo & K.D. Hyde was collected from submerged bamboo in Thailand (Luo et al. 2016a). It was described as globose to subglobose ascomata without setae, cylindrical to cylindric-clavate asci and pale brown to brown ascospores (Luo et al. 2016a). However, the ascospores were obviously hyaline in the illustration of Luo et al. (2016b).

Type species: Poaceascoma helicoides Phook. & K.D. Hyde

Other accepted species: Species Fungorum – search Poaceascoma.

References

Boonmee S, Rossman AY, Liu JK, Li WJ, Dai DQ, Bhat DJ, Jones EBG, McKenzie EHC, Xu JC, Hyde KD 2014 – Tubeufiales, ord. nov., integrating sexual and asexual generic names. Fungal Divers 68:239–298.

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.

Hyde KD, Chaiwan N, Norphanphoun C, Boonmee S, Camporesi E, Chethana KWT, Dayarathne MC, de Silva NI, Dissanayake AJ, Ekanayaka AH, Hongsanan S, Huang SK, Jayasiri SC, Jayawardena RS, Jiang HB, Karunarathna A, Lin CG, Liu JK, Liu NG, Lu YZ, Luo ZL, Maharachchimbura SSN, Manawasinghe IS, Pem D, Perera RH, Phukhamsakda C, Samarakoon MC, Senwanna C, Shang QJ, Tennakoon DS, Thambugala KM, Tibpromma S, Wanasinghe DN, Xiao YP, Yang J, Zeng XY, Zhang JF, Zhang SN, Bulgakov TS, Bhat DJ, Cheewangkoon R, Goh TK, Jones EBG, Kang JC, Jeewon R, Liu ZY, Lumyong S, Kuo CH, McKenzie EHC, Wen TC, Yan JY, Zhao Q (2018a) Mycosphere notes 169–224. Mycosphere 9:271–430

Hyde KD, Hongsanan S, Jeewon R, Bhat DJ, McKenzie EHC, Jones EBG, Phookamsak R, Ariyawansa HA, Boonmee S, Zhao Q, Abdel-Aziz FA, Abdel-Wahab MA, Banmai S, Chomnunti P, Cui BK, Daranagama DA, Das K, Dayarathne MC, de Silva NI, Dissanayake AJ, Doilom M, Ekanayaka AH, Gibertoni TB, Goes-Neto A, Huang SK, Jayasiri SC, Jayawardena RS, Konta S, Lee HB, Li WJ, Lin CG, Liu JK, Lu YZ, Luo ZL, Manawasinghe IS, Manimohan P, Mapook A, Niskanen T, Norphanphoun C, Papizadeh M, Perera RH, Phukhamsakda C, Richter C, Santiago A, Drechsler-Santos ER, Senanayake IC, Tanaka K, Tennakoon T, Thambugala KM, Tian Q, Tibpromma S, Thongbai B, Vizzini A, Wanasinghe DN, Wijayawardene NN, Wu HX, Yang J, Zeng XY, Zhang H, Zhang JF, Bulgakov TS, Camporesi E, Bahkali AH, Amoozegar MA, Araujo-Neta LS, Ammirati JF, Baghela A, Bhatt RP, Bojantchev D, Buyck B, da Silva GA, de Lima CLF, de Oliveira RJV, de Souza CAF, Dai YC, Dima B, Duong TT, Ercole E, Mafalda-Freire F, Ghosh A, Hashimoto A, Kamolhan S, Kang JC, Karunarathna SC, Kirk PM, Kytovuori I, Lantieri A, Liimatainen K, Liu ZY, Liu XZ, Lucking R, Medardi G, Mortimer PE, Nguyen TTT, Promputtha I, Raj KNA, Reck MA, Lumyong S, Shahzadeh-Fazeli SA, Stadler M, Soudi MR, Su HY, Takahashi T, Tangthirasunun N, Uniyal P, Wang Y, Wen TC, Xu JC, Zhang ZK, Zhao YC, Zhou JL, Zhu L 2016b – Fungal diversity notes 367–490: taxonomic and phylogenetic contributions to fungal taxa. Fungal Divers 80:1–270.

Hyde KD, Norphanphoun C, Abreu VP, Bazzicalupo A, Chethana KWT, Clericuzio M, Dayarathne MC, Dissanayake AJ, Ekanayaka AH, He MQ, Hongsanan S, Huang SK, Jayasiri SC, Jayawardena RS, Karunarathna A, Konta S, Kusan I, Lee H, Li J, Lin CG, Liu NG, Lu YZ, Luo ZL, Manawasinghe IS, Mapook A, Perera RH, Phookamsak R, Phukhamsakda C, Siedlecki I, Soares AM, Tennakoon DS, Tian Q, Tibpromma S, Wanasinghe DN, Xiao YP, Yang J, Zeng XY, Abdel-Aziz FA, Li WJ, Senanayake IC, Shang QJ, Daranagama DA, de Silva NI, Thambugala KM, Abdel-Wahab MA, Bahkali AH, Berbee ML, Boonmee S, Bhat DJ, Bulgakov TS, Buyck B, Camporesi E, Castaneda-Ruiz RF, Chomnunti P, Doilom M, Dovana F, Gibertoni TB, Jadan M, Jeewon R, Jones EBG, Kang JC, Karunarathna SC, Lim YW, Liu JK, Liu ZY, Plautz HL Jr, Lumyong S, Maharachchikumbura SSN, Matocec N, McKenzie EHC, Mesic A, Miller D, Pawlowska J, Pereira OL, Promputtha I, Romero AI, Ryvarden L, Su HY, Suetrong S, Tkalcec Z, Vizzini A, Wen TC, Wisitrassameewong K, Wrzosek M, Xu JC, Zhao Q, Zhao RL, Mortimer PE (2017) Fungal diversity notes 603–708: taxonomic and phylogenetic notes on genera and species. Fungal Divers 87:1–235

Luo ZL, Bahkali AH, Liu XY, Phookamsak R, Zhao YC, Zhou DQ, Su HY, Hyde KD (2016a) Poaceascoma aquaticum sp. nov. (Lentitheciaceae), a new species from submerged bamboo in freshwater. Phytotaxa 253:71–80

Phookamsak R, Liu JK, McKenzie EHC, Manamgoda DS, Ariyawansa H, Thambugala KM, Dai DQ, Camporesi E, Chukeatirote E, Wijayawardene NN (2014) Revision of Phaeosphaeriaceae. Fungal Divers 68:159–238

Phookamsak R, Manamgoda DS, Li WJ, Dai DQ, Singtripop C, Hyde KD (2015a) Poaceascoma helicoides gen et sp. nov., a new genus with scolecospores in Lentitheciaceae. Cryptogam Mycol 36:225–237

Shoemaker RA (1976) Canadian and some extralimital Ophiobolus species. Can J Bot 54:2365–2404

Zhang Y, Crous PW, Schoch CL, Hyde KD 2012b – Pleosporales. Fungal Divers 53:1–221.

Entry by

Wei Dong, Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming 650500, China, Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand, Innovative Agriculture Research Center, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, Institute of Plant Health, Zhongkai University of Agriculture and Engineering, Haizhu District, Guangzhou 510225, China

Published online 22 May 2026

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