4.2 Article

Morphological and phylogenetic characteristics of Phaeomycocentrospora xinjangensis (Pleosporales, Dothideomycetes), a new species from China

Journal

PHYTOTAXA
Volume 558, Issue 1, Pages 125-132

Publisher

MAGNOLIA PRESS
DOI: 10.11646/phytotaxa.558.1.9

Keywords

fungal taxonomy; Dothidotthiaceae; molecular phylogeny; morphological characteristics

Categories

Funding

  1. National Natural Science Foundation of China [32060011, 31860002]
  2. Talent Projects of Guizhou Province [[2020] 6005]
  3. Key-Area Research and Development Program of Guangdong Province [2018B020205003]
  4. Construction Program of Biology First-class Discipline in Guizhou (GNYL) [[2017] 009]

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A new fungal pathogen species, Phaeomycocentrospora xinjangensis sp. nov., causing plant leaf spots, was introduced from Xinjiang Uygur Autonomous Region, Northwest China. Multi-gene phylogenetic analyses and morphological characters were used to distinguish the new species from others. The description, illustrations, and phylogenetic tree of the new species were provided.
The genus Phaeomycocentrospora (Dothidotthiaceae) is a fungal pathogen causing plant leaf spots. A new species, Phaeomycocentrospora xinjangensis sp. nov. is introduced from Xinjiang Uygur Autonomous Region, Northwest China. Multi-gene phylogenetic analyses based on a concatenated ITS, LSU, and ACT sequence dataset were used to confirm the phylogenetic position of the new species. Phaeomycocentrospora xinjangensis can easily be distinguished from the remaining species based on multi-gene phylogenetic analyses coupled with morphological characters. Morphologically, P. xinjangensis differs from other species in the genus by the presence of dark hyphae, dark brown conidiophores, few branched conidiogenous cells. Phylogenetically, our three strains were clustered together and formed a separate subclade with high support values. Moreover, we provided a description, illustrations, and phylogenetic tree for the new species.

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