Two novel freshwater hyphomycetes, in Acrogenospora (Minutisphaerales, Dothideomycetes) and Conioscypha (Conioscyphales, Sordariomycetes) from Southwestern China

Freshwater fungi are highly diverse in China and frequently reported from submerged wood, freshwater insects, herbaceous substrates, sediments, leaves, foams, and living plants. In this study, we investigated two freshwater species that were collected from Yunnan and Guizhou provinces in China. Detailed morphological analysis complemented by multi-gene phylogenetic analyses based on LSU, SSU, ITS, RPB2 and TEF1-α sequences data revealed them to be two new saprobic species, namely Acrogenospora alangii sp. nov. and Conioscypha yunnanensis sp. nov. in their asexual morphs. Additionally, Acrogenospora alangii sp. nov. is reported for the first time as a freshwater ascomycete associated with the medicinal plant Alangium chinense (Alangiaceae). Detailed morphological descriptions, illustrations and updated phylogenetic relationships of the new taxa are provided herein

Exploring ascomycete diversity in Yunnan, China I: resolving ambiguous taxa in Phaeothecoidiellaceae and investigating conservation implications of fungi

Yunnan, located in southwestern China, is known for its high fungal diversity, and many of which are endemic to the region. As part of our ongoing studies on fungi in Yunnan, we introduce two new genera in Phaeothecoidiellaceae (Mycosphaerellales), to accommodate one Repetophragma-like and another Stomiopeltis-like taxa. Pseudorepetophragma gen. nov. is introduced herein as a monotypic genus to accommodate P. zygopetali comb. nov.(≡ Repetophragma zygopetali), whereas Pseudostomiopeltis gen. nov. is introduced to accommodate Ps. xishuangbannaensis gen. et sp. nov. and Ps. phyllanthi comb. nov.(≡ Stomiopeltis phyllanthi), based on a new collection from Yunnan. In addition, Stomiopeltis sinensis is transferred to Exopassalora as E. sinensis comb. nov. due to its phylogenetic affinity and grouped with E. zambiae, the generic type of Exopassalora. This study provides new insights into the biodiversity of fungal species in this region and adds to our understanding of their ecological roles, as well as the resolution to ambiguous taxa in Phaeothecoidiellaceae

Greeneria saprophytica sp. nov. on dead leaves of Syzygium cumini from Chiang Rai, Thailand

Tangthirasunun, Narumon, Silar, Philippe, Bhat, Darbhe Jayarama, Maharachchikumbura, Sajeewa S.N., Hyde, Kevin D. (2014): Greeneria saprophytica sp. nov. on dead leaves of Syzygium cumini from Chiang Rai, Thailand. Phytotaxa 184 (5): 275-282, DOI: 10.11646/phytotaxa.184.5.

Two novel freshwater hyphomycetes, in Acrogenospora (Minutisphaerales, Dothideomycetes) and Conioscypha (Conioscyphales, Sordariomycetes) from Southwestern China

Freshwater fungi are highly diverse in China and frequently reported from submerged wood, freshwater insects, herbaceous substrates, sediments, leaves, foams, and living plants. In this study, we investigated two freshwater species that were collected from Yunnan and Guizhou provinces in China. Detailed morphological analysis complemented by multi-gene phylogenetic analyses based on LSU, SSU, ITS, RPB2 and TEF1-α sequences data revealed them to be two new saprobic species, namely Acrogenospora alangii sp. nov. and Conioscypha yunnanensis sp. nov. in their asexual morphs. Additionally, Acrogenospora alangii sp. nov. is reported for the first time as a freshwater ascomycete associated with the medicinal plant Alangium chinense (Alangiaceae). Detailed morphological descriptions, illustrations and updated phylogenetic relationships of the new taxa are provided herein

FIGURE 1 in Greeneria saprophytica sp. nov. on dead leaves of Syzygium cumini from Chiang Rai, Thailand

FIGURE 1. Maximum likelihood (ML) majority rule 28S nuclear large subunit (nuLSU) consensus tree for Greeneria saprophytica, G. uvicola and other representatives in order Diaporthales and genera incertae sedis. RAxML bootstrap support values are given at the nodes. The tree is rooted to Coniochaeta velutina (Coniochaetales).Published as part of <i>Tangthirasunun, Narumon, Silar, Philippe, Bhat, Darbhe Jayarama, Maharachchikumbura, Sajeewa S.N. & Hyde, Kevin D., 2014, Greeneria saprophytica sp. nov. on dead leaves of Syzygium cumini from Chiang Rai, Thailand, pp. 275-282 in Phytotaxa 184 (5)</i> on page 278, DOI: 10.11646/phytotaxa.184.5.3, <a href="http://zenodo.org/record/10089683">http://zenodo.org/record/10089683</a&gt

FIGURE 3 in Greeneria saprophytica sp. nov. on dead leaves of Syzygium cumini from Chiang Rai, Thailand

FIGURE 3. Greeneria saprophytica: conidiogenous cells and conidia.Published as part of <i>Tangthirasunun, Narumon, Silar, Philippe, Bhat, Darbhe Jayarama, Maharachchikumbura, Sajeewa S.N. & Hyde, Kevin D., 2014, Greeneria saprophytica sp. nov. on dead leaves of Syzygium cumini from Chiang Rai, Thailand, pp. 275-282 in Phytotaxa 184 (5)</i> on page 280, DOI: 10.11646/phytotaxa.184.5.3, <a href="http://zenodo.org/record/10089683">http://zenodo.org/record/10089683</a&gt

FIGURE 2 in Greeneria saprophytica sp. nov. on dead leaves of Syzygium cumini from Chiang Rai, Thailand

FIGURE 2. Greeneria saprophytica (MFLUCC 12-0298, holotype). A. Specimen on dead leaf of Syzygium cumini. B. Conidiomata on the host surface. C. L.S. of a conidioma. D–H. Phialidic conidiogenous cells with developing conidia; in G. note proliferating conidiogenous cell. I–L. Conidia. M. Germinating conidium. N–O. Colonies on PDA; N. From top, O. From reverse. Scale bars: C = 50 μm, D–M = 10 μm.Published as part of <i>Tangthirasunun, Narumon, Silar, Philippe, Bhat, Darbhe Jayarama, Maharachchikumbura, Sajeewa S.N. & Hyde, Kevin D., 2014, Greeneria saprophytica sp. nov. on dead leaves of Syzygium cumini from Chiang Rai, Thailand, pp. 275-282 in Phytotaxa 184 (5)</i> on page 279, DOI: 10.11646/phytotaxa.184.5.3, <a href="http://zenodo.org/record/10089683">http://zenodo.org/record/10089683</a&gt

The genus Castanediella

Two new species, Castanediella brevis and C. monoseptata, are described, illustrated and compared with other Castanediella taxa. Evidence for the new species is provided by morphological comparison and sequence data analyses. Castanediella brevis can be distinguished from other Castanediella species by the short hyaline conidiophores and fusiform, aseptate hyaline conidia, while C. monoseptata differs from other Castanediella species by its unbranched conidiophores and fusiform, curved, 0–1-sepatate, hyaline conidia. Phylogenetic analysis of combined ITS and LSU sequence data was carried out to determine the phylogenetic placement of the species. A synopsis of hitherto described Castanediella species is provided. In addition, Castanediella is also compared with morphologically similar-looking genera such as Idriella, Idriellopsis, Microdochium, Neoidriella, Paraidriella and Selenodriella

Two new species of Minimelanolocus (Herpotrichiellaceae, Chaetothyriales) from submerged wood in Yunnan, China

Wan, Yi-Le, Bao, Dan-Feng, Luo, Zong-Long, Bhat, Darbhe-Jayarama, Xu, Yue-Xin, Su, Hong-Yan, Hao, Yu-E (2021): Two new species of Minimelanolocus (Herpotrichiellaceae, Chaetothyriales) from submerged wood in Yunnan, China. Phytotaxa 480 (1): 45-56, DOI: 10.11646/phytotaxa.480.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.480.1.

Insight into the Taxonomic Resolution of <i>Apiospora</i>: Introducing Novel Species and Records from Bamboo in China and Thailand

Taxonomic studies of bambusicolous fungi in China and Thailand have resulted in the collection of three fascinating saprobic coelomycetes strains. Morphology coupled with combined gene analysis of ITS, LSU, TUB2, and TEF1-α DNA sequence data showed that they belong to the genus Apiospora, family Apiosporaceae. A new species from Thailand, Apiospora mukdahanensis, and new records of A. locuta-pollinis from China are herein described. In addition, based on both morphological data coupled with phylogenetics and nomenclatural analyses, A. mori is proposed as a new combination. Maximum likelihood, maximum parsimony and Bayesian analyses were performed to clarify the phylogenetic affinities of the species obtained in this study. Newly obtained strains are compared with morphologically- and phylogenetically-related taxa. The comprehensive descriptions, illustrations, and updated phylogeny are provided and discussed for intra-and intergeneric relationships within Apiospora species