Distoseptispora longispora sp. nov. from freshwater habitats in China

Abstract

A novel species, Distoseptispora longispora, from submerged wood in Yunnan Province, China, is described and illustrated. The fungus is characterized by macronematous, mononematous, septate conidiophores with monoblastic, integrated, determinate, terminal conidiogenous cells that produce acrogenous, solitary, obclavate, elongated, distoseptate conidia. SSU-ITS-LSU sequence analyses were used to infer the phylogenetic relationship between D. longispora and related species. Both molecular analyses and morphological data well support D. longispora as an independent taxon. A key to Distoseptispora species is provided.

Morphological Variety in Distoseptispora and Introduction of Six Novel Species

“…The generic circumscription was later expanded since more species with new morphological traits were described in the genus, such as D. palmarum [12] having polyblastic conidiogenous cells, D. appendiculata [13] and D. hydei [14] characterized by a mucilaginous conidial sheath, and D. martinii (Basionym: Acrodictys martinii) with muriform, transverse conidia [15]. Members in Distoseptispora are commonly found in freshwater habitats, and many new species have been discovered from China and Thailand in recent years [10,11,14,[16][17][18][19][20][21][22][23][24][25]. Currently, more than 30 species are accepted in the genus but without a known sexual morph.…”

Figure 1 from: Shen H-W, Bao D-F, Hyde KD, Su H-Y, Bhat DJ, Luo Z-L (2021) Two novel species and two new records of Distoseptispora from freshwater habitats in China and Thailand. MycoKeys 84: 79-101. https://doi.org/10.3897/mycokeys.84.71905

“…Distoseptispora has been reported from both freshwater and terrestrial habitats. Of these, species have been collected from freshwater environments (Su et al 2016;Hyde et al 2016aHyde et al , 2019Hyde et al , 2020Luo et al 2018;Xia et al 2017Xia et al , 2019Yang et al 2018;Tibpromma et al 2018;Crous et al 2019;Monkai et al 2020;Phukhamsakda et al 2020;Song et al 2020;Sun et al 2020;Li et al 2021). To date, 18 species of Distoseptispora have been reported from Thailand, 14 species from China.…”

“…Distoseptisporaceae is placed in Distoseptisporales, which was introduced by Luo et al (2019), and currently comprises two families, Aquapteridosporaceae and Distoseptisporaceae (Luo et al 2019;Hyde et al 2021). Species of both families are commonly reported from freshwater habitats (Yang et al 2015(Yang et al , 2018u et al 2016;Li et al 2021;Hyde et al 2016aHyde et al , 2019Hyde et al , 2020Luo et al 2018Luo et al , 2019Song et al 2020;Dong et al 2021).…”

Two novel species and two new records of Distoseptispora from freshwater habitats in China and Thailand

“…This genus is not known for its sexual morph (Su et al 2016;Yang et al 2018;Hyde et al 2019Hyde et al , 2020Luo et al 2019;Sun et al 2020). Currently, 32 species are accepted in the genus of which 13 from terrestrial habitats and 19 were reported from freshwater environments (Su et al 2016;Hyde et al 2016aHyde et al , 2019Hyde et al , 2020Xia et al 2017;Yang et al 2018;Luo et al 2018Luo et al , 2019Monkai et al 2020;Song et al 2020;Sun et al 2020;Li et al 2021; Index Fungorum 2021 http://www.indexfungorum.org).…”

“… Distoseptisporaceae is placed in Distoseptisporales , which was introduced by Luo et al (2019) , and currently comprises two families, Aquapteridosporaceae and Distoseptisporaceae ( Luo et al 2019 ; Wijayawardene et al 2020 ; Hyde et al 2021 ). Species of both families are commonly reported from freshwater habitats ( Yang et al 2015 , 2018 ; Su et al 2016 ; Li et al 2021 ; Hyde et al 2016a , 2019 , 2020 ; Luo et al 2018 , 2019 ; Song et al 2020 ; Dong et al 2021 ).…”