Dothideomycetes families incertae sedis » Dothideomycetes genera incertae sedis

Ascominuta

Ascominuta Ranghoo & K.D. Hyde

Index Fungorum number: IF 28449

 

Saprobic on submerged wood. Sexual morph: Ascomata solitary or aggregated, partly immersed to superficial, uniloculate, globose, dark brown to black, ostiolate, periphysate. Peridium composed of several layers of hyaline to dark brown, compressed cells of textura angularis. Pseudoparaphyses sparse, cellular, comprising short chains of globose cells, often breaking up into individual cells. Asci 4-spored, bitunicate, globose, short or non-pedicellate, without an apical apparatus. Ascospores overlapping multiseriate, broadly fusiform or ovoid, occasionally curved, hyaline, 1-septate, constricted at the septum, smooth-walled, with a distinct sheath. Asexual morph: Undetermined. (Description from Dong et al.2020)

 

Type species: Ascominuta lignicola Ranghoo & K.D. Hyde

 

Notes: Ascominuta comprises two freshwater species, characterized by globose asci containing four spores and broadly fusiform or ovoid, hyaline, 1-septate ascospores with a distinct sheath (Ranghoo and Hyde 2000; Hu et al. 2010a). Ascominuta was probably an earlier name for Natipusilla based on morphology and habitat (see notes of Natipusilla) (Hyde et al. 2013) but needs to be established by molecular data. Ascominuta was initially placed in Ascomycetes genera incertae sedis (Ranghoo and Hyde 2000), then placed in Dothideomycetes genera incertae sedis (Lumbsch and Huhndorf 2007), which was accepted by Wijayawardene et al. (2018, 2020). Ascominuta lignicola cannot be aligned with other Dothideomycetous species in our sequence dataset, so we exclude this species from our phylogenetic analyses. (Notes from Dong et al.2020)

 

List of freshwater Ascominuta species

Ascominuta lignicola Ranghoo & K.D. Hyde, Mycoscience 41: 1 (2000)

Freshwater distribution: China (Ranghoo and Hyde 2000), Thailand (Hu et al. 2010b)

 

Ascominuta ovalispora D.M. Hu & K.D. Hyde, Sydowia 62: 192 (2010)

Freshwater distribution: Thailand (Hu et al. 2010a)

 

Key to freshwater Ascominuta species

1. Ascospores 22–25 × 8–10 μm………………………………………..…A. lignicola

1. Ascospores 28–30 × 9–10 μm……………………………………..…A. ovalispora

 

References

Dong W, Wang B, Hyde KD, McKenzie EHC, Raja HA, Tanaka K, Abdel-Wahab MA, Abdel-Aziz FA, Doilom M, Phookamsak R, Hongsanan S, Wanasinghe DN, Yu X-D, Wang G-N, Yang H, Yang J, Thambugala KM, Tian Q, Luo Z-L, Yang J-B, Miller AN, Fournier J, Boonmee S, Hu D-M, Nalumpang S, Zhang H (2020) Freshwater Dothideomycetes. Fungal Divers 105:319–575. https://doi.org/10.1007/s13225-020-00463-5

Hu DM, Cai L, Chen H, Bahkali AH, Hyde KD (2010a) Four new freshwater fungi associated with submerged wood from Southwest Asia. Sydowia 62:191–203

Hu DM, Cai L, Chen H, Bahkali AH, Hyde KD (2010) Fungal diversity on submerged wood in a tropical stream and an artificial lake. Biodivers Conserv 19:3799–3808. https://doi.org/10.1007/s10531-010-9927-5

Hyde KD, Jones EBG, Liu JK, Ariyawansa H, Boehm E, Boonmee S, Braun U, Chomnunti P, Crous PW, Dai DQ, Diederich P, Dissanayake A, Doilom M, Doveri F, Hongsanan S, Jayawardena R, Lawrey JD, Li YM, Liu YX, Lücking R, Monkai J, Muggia L, Nelsen MP, Pang KL, Phookamsak R, Senanayake IC, Shearer CA, Suetrong S, Tanaka K, Thambugala KM, Wijayawardene NN, Wikee S, Wu HX, Zhang Y, Aguirre-Hudson B, Alias SA, Aptroot A, Bahkali AH, Bezerra JL, Bhat DJ, Camporesi E, Chukeatirote E, Gueidan C, Hawksworth DL, Hirayama K, De Hoog S, Kang JC, Knudsen K, Li WJ, Li XH, Liu ZY, Mapook A, McKenzie EHC, Miller AN, Mortimer PE, Phillips AJL, Raja HA, Scheuer C, Schumm F, Taylor JE, Tian Q, Tibpromma S, Wanasinghe DN, Wang Y, Xu JC, Yacharoen S, Yan JY, Zhang M (2013) Families of Dothideomycetes. Fungal Divers 63:1–313. https://doi.org/10.1007/s13225-013-0263-4

Lumbsch HT, Huhndorf SM (2007) Outline of ascomycota–2007. Myconet 13:1–58

Ranghoo VM, Hyde KD (2000) Ascominuta lignicola, a new loculoascomycete from submerged wood in Hong Kong. Mycoscience 41:1–5. https://doi.org/10.1007/BF02464379

Wijayawardene NN, Hyde KD, Al-ani LKT, Tedersoo L, Haelewaters D, Rajeshkumar KC, Zhao R, Aptroot A, Leontyev D V, Ramesh K, Tokarev YS, Dai D, Letcher PM, Steven L, Ertz D, Lumbsch HT, Kukwa M, Issi V, Madrid H, Phillips AJL, Selbmann L, Walter P, Horváth E, Bensch K, Kirk P, Raja HA, Radek R, Papp V, Dima B, Ma J, Malosso E, Takamatsu S, Rambold G, Gannibal PB, Triebel D, Gautam AK, Avasthi S, Suetrong S, Timdal E, Fryar SC, Delgado G, Réblová M, Doilom M, Dolatabadi S, Humber RA, Kodsueb R, Sánchez- I, Goto BT, Silva DKA, Souza FA De, Silva GA, Silva IR, Błaszkowski J, Jobim K, Maia LC, Barbosa FR, Fiuza PO, Divakar PK, Shenoy BD, Castañeda-ruiz RF, Papizadeh M, Heredia G, Bakhshi M, Boehm E, Youssef N, Vincent P, Lawrey JD, Santiago ALCMDA, Jadson DP, Souza-motta CM, Firmino AL, Tian Q, Monteiro JS, Grossart H, Suija A, Etayo J, Tsurykau A, Kuhnert E, Mungai P, Damm U, Li Q, Zhang H, Boonmee S, Lu Y, Becerra AG, Brearley FQ, Motiejūnaitė J, Khare R, Gaikwad S, Siril DA, Tang L, He M, Flakus A, Zhurbenko MP, Mckenzie EHC, Bhat DJ, Kui-liu J, Raza M, Nassonova ES, Prieto M, Jayalal RGU, Yurkov A, Schnittler M, Shchepin ON, Yuri K, Liu P, Cavender JC, Kang Y, Zhang L, Xu R, Li Y, Monika C, Ekanayaka AH, Wen T, Lateef AA, Pereira OL, Navathe S, Hawksworth DL, Fan X, Dissanayake LS (2020) Outline of Fungi and fungus-like taxa. Mycosphere 11:1–367. https://doi.org/10.5943/mycosphere/11/1/8

Wijayawardene NN, Hyde KD, Lumbsch HT, Liu JK, Maharachchikumbura SSN, Ekanayaka AH, Tian Q, Phookamsak R (2018) Outline of Ascomycota: 2017. Fungal Divers 88:167–263. https://doi.org/10.1007/s13225-018-0394-8

 

Recent Genus

1
Neochlamydotubeufia
Neohelicomyces

Recent Species

Neohelicomyces submersus
Neohelicomyces hyalosporus
Neohelicomyces grandisporus