Pleosporales » Lophiostomataceae

Longipedicellata

Longipedicellata H. Zhang, K.D. Hyde & J.K. Liu

Index Fungorum number: IF551685

 

Saprobic on dead and submerged woody materials. Sexual morph: Ascomata scattered or clustered, immersed, beneath a blackened pseudoclypeus, lenticular, uniloculate, glabrous, brown to black, coriaceous, sometimes ostiolate. Ostiole relatively large, central, short, dark. Peridium thin, comprising several layers of brown, thin-walled, flattened cells of textura angularis, outer layer somewhat carbonaceous, easily cracked. Pseudoparaphyses absent, few or numerous, cellular, hyphae-like, hyaline, sparsely septate. Asci 8-spored, bitunicate, clavate, long pedicellate, with an ocular chamber. Ascospores bi- to tri-seriate, broadly fusiform to ellipsoidal, hyaline, 1-septate, slightly asymmetrical, the upper cell often shorter and broader than the lower one, smooth, thin-walled, surrounded by mucilaginous sheath (Zhang et al. 2016). Asexual morph: Hyphomycetous. Mycelium composed of hyaline to dark brown, septate, branched, smooth hyphae. Conidiophores and conidiogenous cells unknown. Conidia chlamydosporous monilioid, in long acropetal, branched chains, catenate, doliiform, subglubose to oval, brown to reddish-brown, rough-walled. (Descriptions from Dong et al. 2020)

 

Type species: Longipedicellata aptrootii (K.D. Hyde & S.W. Wong) H. Zhang, K.D. Hyde & J.K. Liu

 

Notes: Longipedicellata was introduced in Bambusicolaceae to accommodate Didymella aptrootii K.D. Hyde & S.W. Wong based on combined LSU, SSU, RPB2 and TEF sequence data (Zhang et al. 2016). However, it clustered in Bambusicolaceae with low bootstrap support (Zhang et al. 2016). Phukhamsakda et al. (2016) re-collected this species from Thailand and showed a close relationship between Pseudoxylomyces elegans (Goh et al.) Kaz. Tanaka & K. Hiray. and Longipedicellata aptrootii which represented a new family Longipedicellataceae. They also reported the asexual morph of L. aptrootii which formed in the culture. Dong et al. (2020) introduced L. aquatica collected from freshwater habitats in Thailand. (Notes from Dong et al. 2020)

 

List of freshwater Longipedicellata species

Longipedicellata aptrootii (K.D. Hyde & S.W. Wong) H. Zhang, K.D. Hyde & J.K. Liu, Phytotaxa 247(2): 104 (2016)

Basionym: Didymella aptrootii K.D. Hyde & S.W. Wong, Australas. Mycol. 18 (3): 54 (1999)

Freshwater distribution: China (Hyde and Wong 1998), Malaysia (Hyde and Wong 1998), Philippines (Hyde and Wong 1998; Cai et al. 2003a), Thailand (Kurniawati et al. 2010; Zhang et al. 2016; Dong et al. 2020)

Longipedicellata aquatica W. Dong, H. Zhang & K.D. Hyde, in Dong et al., Fungal Diversity: 10.1007/s13225-020-00463-5

Freshwater distribution: Thailand (Dong et al. 2020)

 

Key to freshwater Longipedicellata species

1. Asci 70–100 × 17–20 μm, ascospores surrounded by irregular sheath........... L. aptrootii

1. Asci 85–120 × 22–27 μm, ascospores surrounded by ellipsoidal sheath, which is deeply constricted near the ascospores septa.......................................................................................................... L. aquatica

 

References

Cai L, Zhang KQ, McKenzie EHC, Hyde KD (2003a) Freshwater fungi from bamboo and wood submerged in the Liput River in the Philippines. Fungal Divers 13:1–12

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 XD, Wang GN, Yang H, Yang J, Thambugala KM, Tian Q, Luo ZL, Yang J-B, Miller AN, Fournier J, Boonmee S, Hu D-M, Nalumpang S, Zhang H (2020) Freshwater Dothideomycetes. Fungal Diversity 105:319–575

Hyde KD, Wong SW (1998) Didymella aptrootii sp. nov. from bamboo submerged in freshwater. Aust Mycol 18:54–62

Kurniawati E, Zhang H, Chukeatirote E, Sulistyowati L, Moslem MA, Hyde KD (2010) Diversity of freshwater ascomycetes in freshwater bodies at Amphoe Mae Chan, Chiang Rai. Cryptogam Mycol 31:323–331

Phukhamsakda C, Hongsanan S, Ryberg M, Ariyawansa HA, Chomnunti P, Bahkali AH, Hyde KD (2016) The evolution of Massarineae with Longipedicellataceae fam. nov. Mycosphere 7:1713-1731

Zhang H, Dong W, Hyde KD, Bahkali AH, Liu JK, Zhou DQ, Zhang DI (2016) Molecular data shows Didymella aptrootii is a new genus in Bambusicolaceae. Phytotaxa 247:99–108

 

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