Introducing Seriascoma yunnanense sp. nov. (Occultibambusaceae, Pleosporales) based on evidence from morphology and phylogeny

Name: Rathnayaka AR

Address: 333 Moo1, Thasud, Muang, Chiang Rai 57100

Organization : Center of Excellence in Fungal Research, Mae Fah Luang University

Email : ask.library@mfu.ac.th

Name: Dayarathne MC

Name: Maharachchikumbura SSN

Name: Liu JK

Name: Tennakoon DS

Name: and Hyde KD

keyword: 1 new taxon – Dothideomycetes – Multi-gene – Phylogenetic analysis – Taxonomy

ThaSH: Fungi

ThaSH: Fungi – Classification

ThaSH: Fungi – Morphology

ThaSH: Fungi – Genetics

ThaSH: Fungi – Spores – Morphology

ThaSH: China

Abstract: In this study, we introduce a new fungal species from dead branches of bamboo (Poaceae) in Yunnan Province, China. Combined LSU, SSU, RPB2 and TEF1-α gene sequence data analysis showed it belongs to the family Occultibambusaceae (Pleosporales). Maximum likelihood and Bayesian analyses were performed to clarify the phylogenetic affinities of the taxon. The novel species is typical to Seriascoma in its elongated, gregarious, ostiolate ascostromata, immersed beneath the clypeus and clavate to fusiform, didymosporous, hyaline ascospores, but differs from S. didymospora in having uni-loculate ascostromata, short pedicellate asci and ascospores with gelatinous sheath and relatively large guttules. The new taxon is compared with known Seriascoma species and a comprehensive description and micrographs are provided.

Mae Fah Luang University. Learning Resources and Educational Media Center

Address: CHIANG RAI

Email: library@mfu.ac.th

Modified: 2021-09-06

Issued: 2021-09-06

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BibliograpyCitation : Asian Journal of Mycology (AJOM). Vol.2, No.1 (January - June 2019): p.245-253

Asian Journal of Mycology 2(1): 245–253 (2019)

eng

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