Fungalpedia – Note 28 Tieghemostelium
Citation: Bhunjun et al. 2023 – Fungalpedia, genera described in 2018, Mycosphere (in press)
Tieghemostelium S. Baldauf, S. Sheikh & Thulin
Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1
Tieghemostelium was introduced in the family Raperosteliaceae in the group of dictyostelids (Sheikh et al. 2018, Wijayawardene et al. 2020). It belongs under the phylum Protozoa of the kingdom Protista, thus the generic name is not considered to apply to an organism within the fungal clade. The new classification and placement of Tieghemostelium is based on molecular phylogenic analysis of small subunit ribosomal RNA (18S rRNA). It is sister to Hagiwaraea and Raperostelium but has unique nucleotides in positions 246-249 and 511-513 in the SSU rRNA gene regions (Sheikh et al. 2018). This genus has sorocarps with cellular stalks, that are colorless and easily crushed. Spores are usually variable from globose, ellipsoid to oblong, sometimes granular. Microcysts are present for most species while macrocysts are recognized for T. lacteum (D. Anderson and J. Cavender, unpublished). Non-streaming aggregation, slug migration is present or absent (Sheikh et al. 2018).
Type species: Tieghemostelium lacteum (Tiegh.) S. Baldauf, S. Sheikh & Thulin
Other accepted species
Tieghemostelium angelicum (Cavender, Vadell, J.C. Landolt & Romeralo) S. Baldauf, S. Sheikh & Thulin
Tieghemostelium dumosum (Cavender, Vadell, J.C. Landolt & Romeralo) S. Baldauf, S. Sheikh & Thulin
Tieghemostelium menorah (Vadell & Cavender) S. Baldauf, S. Sheikh & Thulin
Tieghemostelium montium (Cavender, Vadell, J.C. Landolt & Romeralo) S. Baldauf, S. Sheikh & Thulin
Tieghemostelium simplex (Cavender, Vadell, J.C. Landolt & Romeralo) S. Baldauf, S. Sheikh & Thulin
Tieghemostelium unicornutum (Cavender, Vadell, J.C. Landolt & Romeralo) S. Baldauf, S. Sheikh & Thulin
Fig 1. Tieghemostelium lacteum (strain UI-14). A. Numerous sorogens arising from a single aggregation. B. Base of clustered sorocarps showing cellular structure. C. A single sorogen. D. Sporophore composed of a single tier of vacuolated cells. E. Globose spores. Scale bars: A = 3 mm, B = 1 mm, C = 1 mm, D = 100 µm, E = 5 µm. Redrawn from Sheikh et al. (2018).
References
Sheikh S, Thulin M, Cavender JC, Escalante R, Kawakami S, Lado C, Landolt JC, Nanjundiah V, Queller DC, Strassmann JE, Spiegel FW, Stephenson SL, Vadell EM, Baldauf SL. 2018. A New Classification of the Dictyostelids. Protist 169: 1–28.
Wijayawardene NN, Hyde KD, Al-Ani LKT, Tedersoo L, Haelewaters D, Rajeshkumar KC, Zhao RL, Aptroot A, Leontyev D V., Saxena RK, Tokarev YS, Dai DQ, Letcher PM, Stephenson SL, Ertz D, Lumbsch HT, Kukwa M, Issi I V., Madrid H, Phillips AJL, Selbmann L, Pfliegler WP, Horváth E, Bensch K, Kirk PM, Kolaríková K, 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, Pawlowska JZ, Humber RA, Kodsueb R, Sánchez-Castro I, Goto BT, Silva DKA, de Souza FA, Oehl F, da Silva GA, Silva IR, Blaszkowski J, Jobim K, Maia LC, Barbosa FR, Fiuza PO, Divakar PK, Shenoy BD, Castañeda-Ruiz RF, Somrithipol S, Lateef AA, Karunarathna SC, Tibpromma S, Mortimer PE, Wanasinghe DN, Phookamsak R, Xu J, Wang Y, Tian F, Alvarado P, Li DW, Kušan I, Matocec N, Mešic A, Tkalcec Z, Maharachchikumbura SSN, Papizadeh M, Heredia G, Wartchow F, Bakhshi M, Boehm E, Youssef N, Hustad VP, Lawrey JD, Santiago ALCMA, Bezerra JDP, Souza-Motta CM, Firmino AL, Tian Q, Houbraken J, Hongsanan S, Tanaka K, Dissanayake AJ, Monteiro JS, Grossart HP, Suija A, Weerakoon G, Etayo J, Tsurykau A, Vázquez V, Mungai P, Damm U, Li QR, Zhang H, Boonmee S, Lu YZ, Becerra AG, Kendrick B, Brearley FQ, Motiejunaite J, Sharma B, Khare R, Gaikwad S, Wijesundara DSA, Tang LZ, He MQ, Flakus A, Rodriguez-Flakus P, Zhurbenko MP, McKenzie EHC, Stadler M, Bhat DJ, Liu JK, Raza M, Jeewon R, Nassonova ES, Prieto M, Jayalal RGU, Erdogdu M, Yurkov A, Schnittler M, Shchepin ON, Novozhilov YK, Silva-Filho AGS, Gentekaki E, Liu P, Cavender JC, Kang Y, Mohammad S, Zhang LF, Xu RF, Li YM, Dayarathne MC, Ekanayaka AH, Wen TC, Deng CY, Pereira OL, Navathe S, Hawksworth DL, Fan XL, Dissanayake LS, Kuhnert E, Grossart HP, Thines M. 2020. Outline of Fungi and fungus-like taxa. Mycosphere 11.
Entry by
Allen Grace T. Niego, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand; Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand; Iloilo Science and Technology University, La Paz, Iloilo 5000, Philippines
(Edited by Chitrabhanu S. Bhunjun and Kevin D. Hyde)