Journal
PHYTOTAXA
Volume 529, Issue 1, Pages 43-56Publisher
MAGNOLIA PRESS
DOI: 10.11646/phytotaxa.529.1.3
Keywords
1 new species; asexual morph; Dothideaceae; phylogeny; taxonomy
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Funding
- Strategic Priority Research Program of Chinese Academy of Sciences Grant [XDA26020203]
- National Natural Science Foundation of China [32001296]
- CAS Presidents International Fellowship Initiative (PIFI) [2021FYB0005]
- Human Resources and Social Security Bureau of Yunnan Province
- Yunnan Fundamental Research Projects [2019FB063]
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A new species of coelomycetous fungus in the genus Dothidea was discovered in Kunming, Yunnan Province during a survey of saprobic microfungi in Southwest China. Phylogenetic analyses confirmed its placement in Dothideaceae and revealed a sister relationship to Dothidea eucalypti. The new species is characterized by specific morphological features and aseptate, subglobose to ovoid, hyaline to pale-brown conidia, with comprehensive descriptions and illustrations provided in the study.
During a survey of saprobic microfungi in Southwest China, a coelomycetous fungus was found on dead twigs of Jasminum nudiflorum in Kunming, Yunnan Province. Based on a detailed morphological characterization coupled with multi-locus phylogenetic analyses, the fungus was identified as a new species in the genus Dothidea. Phylogenetic analyses using a combined matrix consisting of internal transcribed spacer (ITS), large subunit rRNA (LSU), small subunit rRNA (SSU), beta tubulin (tub2) and translation elongation factor-1 alpha (tef1-alpha) confirmed its placement in Dothideaceae and revealed a sister relationship to Dothidea eucalypti. The new species is characterized by pycnidial conidiomata, ampulliform or doliiform conidiogenous cells as well as aseptate, subglobose to ovoid, hyaline to pale-brown conidia. Comprehensive descriptions and illustrations are provided. Morphological characteristics of asexual morph taxa in Dothideaceae are also summarized and discussed.
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