Didymella gigantis sp. nov. Causing Leaf Spot in Korean Angelica

Gyo Bin Lee, Ki Deok Kim, Weon Dae Cho, Wan Gyu Kim

Research output: Contribution to journalArticlepeer-review

Abstract

During a disease survey in October 2019, leaf spot symptoms with a yellow halo were observed on Korean angelica (Anglica gigas) plants grown in fields in Pyeongchang, Gangwon Province, Korea. Incidence of diseased leaves of the plants in the investigated fields ranged from 10% to 60%. Morphological and cultural characteristics of two single-spore isolates from the leaf lesions indicated that they belonged to the genus Didymella. Molecular phylogenetic analyses using combined sequences of LSU, ITS, TUB2, and RPB2 regions showed distinct clustering of the isolates from other Didymella species. In addition, the morphological and cultural characteristics of the isolates were somewhat different from those of closely related Didymella spp. Therefore, the novelty of the isolates was proved based on the investigations. Pathogenicity of the novel Didymella species isolates was confirmed on leaves of Korean angelica plants via artificial inoculation. This study reveals that Didymella gigantis sp. nov. causes leaf spot in Korean angelica.

Original languageEnglish
Pages (from-to)393-400
Number of pages8
JournalMycobiology
Volume51
Issue number6
DOIs
Publication statusPublished - 2023

Bibliographical note

Publisher Copyright:
© 2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group on behalf of the Korean Society of Mycology.

Keywords

  • Angelica gigas
  • Didymella gigantis
  • Korean angelica
  • leaf spot

ASJC Scopus subject areas

  • Microbiology
  • Infectious Diseases

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