Pleosporales » Lophiostomataceae » Biappendiculispora

Biappendiculispora japonica

Biappendiculispora japonica Thambug., Wanas., Kaz. Tanaka & K.D. Hyde

Index Fungorum Number: IF551529; Facesoffungi number: FoF01097

 

Saprobic on submerged decaying wood. Sexual morph: Ascomata 330–420 μm high, 240–300 μm diam (x̄ = 383 × 276 μm, n = 5), semi immersed to immersed, solitary to gregarious, subglobose, papillate, coriaceous, black. Ostiole slit like, central, brown to dark brown. Peridium 15–25 μm wide composed one stratum, with several layer s of brown to dark brown, cells of textura angularis, cells towards the inside lighter, outside is darker. Hamathecium comprising numerous, branched, septate, guttulate, cellular pseudoparaphyses, embedded in a gelatinous matrix. Asci 108–130 × 15–18 μm (x̄ = 119 × 16.4 μm, n = 20), 8-spored, bitunicate, fissitunicate, cylindric clavate, with short pedicel, rounded at the apex, with an ocular chamber. Ascospores 29.8–39 × 6–8 μm (x̄ = 34.2 × 7 μm, n = 30), overlapping uni to bi seriate, fusiform with acute ends, mostly curved, 7–8-septate, constricted at the septa, guttulate, hyaline when young, becoming yellowish to brown at maturity, smooth, with appendages at both ends. Asexual morph: Undetermined. (Descriptions from Bao et al. 2019c)

 

Material examined: CHINA, Yunnan Province, Dali city, Midu County, saprobic on decaying wood submerged in a stream, May 2015, H.W. Shen S 787 (DLU 787), living culture, MFLUCC 17-2450.

 

Notes: Biappendiculispora japonica was introduced by Tanaka & Harada (2003), and it was previously placed in the genus Lophiostoma Subsequently, Thambugala et al. (2015) showed that L. japonica grouped as a sister clade to Pseudolophiostoma. Therefore, Thambugala et al. (2015) introduced a new genus Biappendiculispora to accommodate Lophiostoma japonica. Morphologically, our fresh collection fits well with B. japonica, such as immersed, coriaceous ascomata, bitunicate, cylindric clavate asci with an ocular chamber and hyaline to brown, fusiform ascospores with acute ends. Phylogenetic analysis showed that our isolate clustered together with B. japonica with strong bootstrap support (98 ML/1.00 PP). Therefore, we identify our collection as Biappendiculispora japonica and it is a new record from China which was previously reported in Japan from terrestrial habitats. (Notes from Bao et al. 2019)

 

Freshwater distribution: China (Bao et al. 2019)

 

Fig 1. Biappendiculispora japonica (DLU 787) a, b Ascomata on submerged wood. c, d Section of ascoma. e Peridium. f Pseudoparaphyses. g Ascus apex. h-k Asci. l-q Ascospore. Scale bars: c, d = 100 μm, e = 50 μm, f-g, l-q = 20 μm, f = 20 μm, h-k = 30 μm. (Bao et al. 2019)

 

References

Bao DF, Su HY, Maharachchikumbur SSN, Liu JK, Nalumpang S, Luo ZL, Hyde KD (2019) Lignicolous freshwater fungi from China and Thailand: Multi-gene phylogeny reveals new species and new records in Lophiostomataceae. Mycosphere 10:1080–1099

Tanaka K, Harada Y (2003) Pleosporales in Japan (1): the genus Lophiostoma. Mycoscience 44:85–96

Thambugala KM, Hyde KD, Tanaka K, Tian Q et al. (2015) Towards a natural classification and backbone tree for Lophiostomataceae, Floricolaceae, and Amorosiaceae fam.nov. Fungal Diversity 74:199–266

 

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