Pleosporales » Trematosphaeriaceae » Falciformispora

Falciformispora aquatica

Falciformispora aquatica D.F. Bao, K.D. Hyde & H.Y. Su

Index Fungorum number: IF 555415Facesoffungi number: FoF 05059

Etymology: Referring to the aquatic habitat of this fungus

Holotype: MFLU 18-1228

 

Saprobic on decaying wood, submerged wood in freshwater. Asexual morph Undetermined. Sexual morph: Ascomata 260–330 μm diam. 230–300 μm high (x̄ =286 × 260 μm, n = 10) solitary to gregarious, immersed in the host tissue, globose to subglobose, coriaceous, papillate, ostiolate, dark grey to black. Peridium up to 25–30 μm wide, composed of outer thick-walled angular or rounded greyish brown cells, and inner hyaline cells of textura prismatica. Hamathecium comprising 2–3.5 μm wide, numerous, septate, cellular pseudoparaphyses, hyaline, branched, surrounded by a gelatinous matrix. Asci 115–167 × 28–47 μm ( = 147 × 36 μm, n = 20), 8-spored, bitunicate, fissitunicate, cylindro-clavate, short pedicellate. Ascospores 48–59 × 10–16 μm ( = 55 × 13 μm, n = 30), fusiform to clavate, hyaline, straight or slightly curved, 5–6-septate, mostly 6-septate, slightly constricted at all septa, tapering to narrow both of ends, surrounded by a mucilaginous sheath and a single scythe-like appendage at the apex. (Descriptions from Hyde et al. 2019)

 

Culture characteristics: Ascospores germinating on PDA within 24 h. Colonies on MEA at room temperature reaching 2.5 cm diam. in three weeks, mycelium pale brown to grayish brown after 3 weeks, composed brown to dark brown, septate, smooth or verrucose hyphae. (Descriptions from Hyde et al. 2019)

 

Material examined: THAILAND, Prachuap Khiri Khan Province, Sai Khu Waterfall, on submerged decaying wood, August 2017, Vinit Kumar., site1–2–1, (MFLU 18–1228, holotype), ex-type living culture (MFLUCC 18–0212).

 

Notes: The phylogenetic analyses showed that Falciformispora aquatica grouped with members of Falciformispora but separated in an independent lineage with relatively high bootstrap support (100% ML/1.00 BYPP). Falciformispora aquatica is similar to F. lignatilis, as they have similar asci (bitunicate, fissitunicate, with a short pedicel) and ascospores (fusiform to clavate, hyaline). However F. aquatica has larger asci (115–167 × 28–47 vs. 110–136 × 20–32 μm), and larger ascospores (48–59 × 10–16 vs. 42–50 × 7.5–10 μm). Moreover, F. aquatica ascospores are mostly 6-septate, whereas those of F. lignatilis over 7-septate. (Descriptions from Hyde et al. 2019)

 

Freshwater distribution: Thailand (Hyde et al. 2019)

 

Fig. 48

Fig 1. Falciformispora aquatica (MFLU 18-1228, holotype). a. Ascomata on submerged wood. b. Section of ascoma. c, d. Section of peridium. e. Pseudoparaphyses. f–k. Asci. l-n. Ascospores. o. Germinating ascospore. p, q. Culture on PDA. Scale bars: b = 100 μm, f–k = 30 μm, c–e, l–o = 20 μm (Hyde et al. 2019)

 

References

Hyde KD, Danushka S, Tennakoon DS, Jeewon R, Bhat DJ, Maharachchikumbura SSN, Rossi W, Leonardi M, Lee HB, Mun HY, Houbraken J, Nguyen TTT, Jeon SJ, Frisvad JC, Dhanushka N, Wanasinghe DN, Luücking R, Aptroot A, Cáceres MES, Karunarathna SC, Hongsanan S, Phookamsak R, de Silva NI, Thambugala KM, Jayawardena RS, Senanayake IC, Boonmee S, Chen J, Luo ZL, Phukhamsakda C, Pereira OL, Abreu VP, Rosado AWC, Bart B, Randrianjohany E, Hofstetter V, Gibertoni TB, da Silva Soares AM, Plautz HL Jr, Sotão HMP, Xavier WKS, Bezerra JDP, de Oliveira TGL, de Souza-Motta CM, Magalhães OMC, Bundhun D, Harishchandra D, Manawasinghe IS, Dong W, Zhang SN, Bao DF, Samarakoon MC, Pem D, Karunarathna A, Lin CG, Yang J, Perera RH, Kumar V, Huang SK, Dayarathne MC, Ekanayaka AH, Jayasiri SC, Xiao YP, Konta S, Niskanen T, Liimatainen K, Dai YC, Ji XH, Tian XM, Mešić A, Singh SK, Phutthacharoen K, Cai L, Sorvongxay T, Thiyagaraja V, Norphanphoun C, Chaiwan N, Lu YZ, Jiang HB, Zhang JF, Abeywickrama PD, Aluthmuhandiram JVS, Brahmanage RS, Zeng M, Chethana T, Wei DP, Réblová M, Fournier J, Nekvindová J, do Nascimento Barbosa R, dos Santos JEF, de Oliveira NT, Li GJ, Ertz D, Shang QJ, Phillips AJL, Kuo CH, Camporesi E, Bulgakov TS, Lumyong S, Jones EBG, Chomnunti P, Gentekaki E, Bungartz F, Zeng XY, Fryar S, Tkalčec Z, Liang J, Li GS, Wen TC, Singh PN, Gafforov Y, Promputtha I, Yasanthika E, Goonasekara ID, Zhao RL, Zhao Q, Kirk PM, Liu JK, Yan JY, Mortimer PE, Xu JC (2019) Fungal diversity notes 1036–1150: taxonomic and phylogenetic contributions on genera and species of fungal taxa. Fungal Divers 96:1–242

 

About Freshwater Fungi

The webpage Freshwater Fungi provides an up-to-date classification and account of all genera of freshwater fungi.

Contact



Published by the Mushroom Research Foundation 
Copyright © The copyright belongs to the Mushroom Research Foundation. All Rights Reserved.