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Journal of Plant Pathology

, Volume 101, Issue 4, pp 1255–1255 | Cite as

First report of Aureobasidium pullulans causing anthracnose on Paeonia suffruticosa in Korea

  • Dong-Hyeon LeeEmail author
  • Sung-Eun Cho
  • Ji-Hyun Park
  • Sang-Tae Seo
  • Sang-Hyun Lee
  • Sun Keun Lee
Disease Note
  • 214 Downloads

Keywords

Anthracnose Fungal diseases Leaf spot Peonia 

During a recent survey on fungal pathogens carried out between 2017 and 2018, severe anthracnose symptoms on the leaves of Paeonia suffruticosa were consistently observed in Seoul, Korea. This includes angular black spots or blotches, in some cases, merged to form large blotches causing irregularly shaped leaves when heavily infected. To identify the pathogen, isolations were directly made by detaching spores from the leaves, and pure cultures were obtained by single spore isolations using 2% malt extract agar. All cultures obtained were deposited into the culture collection of the Forest Pathology Research Laboratory, National Institute of Forest Science, Korea (Accession No. CDH20181210-1 and CDH20181210-2). Microscopic examinations revealed hyaline to dark brown conidia to be one-celled, smooth, ellipsoidal, but variable in shape and size (Zalar et al. 2008). Furthermore, genomic DNAs were extracted from two representative isolates obtained and sequenced using ITS1 and ITS4 primers (White et al. 1990) and deposited in GenBank with the accession numbers MK271743 and MK271744. The phylogenetic analysis based on the Maximum Likelihood (ML) method was performed using sequences obtained in this study. The result showed that the isolates were clustered with the authentic isolates of Aureobasidium pullulans (Zalar et al. 2008), confirming its identity. Pathogenicity of the pathogen was confirmed via the inoculation trials where the detached leaves were inoculated with the suspension of the pathogen adjusted to 105 conidia/ml and maintained in a moisture chamber at 25 °C under a 12-h photoperiod. To the best of our knowledge, this is the first report of A. pullulans causing anthracnose on P. suffruticosa in Korea or worldwide (Farr and Rossman 2018).

Notes

Acknowledgements

The authors acknowledge the financial support from the National Institute of Forest Science, ‘Survey on occurrences of forest pathogens and pests program, no. FE0703-2016-01’.

Compliance with ethical standards

Conflict of interest

The authors have no conflicts of interest to declare.

Ethical statements

This article does not contain any studies with human participants or animals performed by any of the authors.

References

  1. Farr DF, Rossman AY (2018) Fungal databases, U.S. National Fungus Collections, ARS, USDA (Retrieved at November 13, 2018, from https://nt.ars-grin.gov/fungaldatabases/) Accessed 13 Nov 2018
  2. White TJ, Bruns T, Lee S, Taylor J (1990) Amplification and direct sequencing of fungal ribosomal RNA genes for phylogenetics. In: Innis MA, Gelfand DH, Sninsky JJ, White TJ (eds) PCR protocols: a guide to methods and applications. Academic Press, San Diego, pp 315–322Google Scholar
  3. Zalar P, Gostinčar C, De Hoog GS, Uršič V, Sudhadham M, Gunde-Cimerman N (2008) Redefinition of Aureobasidium pullulans and its varieties. Stud Mycol 61:21–38CrossRefGoogle Scholar

Copyright information

© Società Italiana di Patologia Vegetale (S.I.Pa.V.) 2019

Authors and Affiliations

  1. 1.Division of Forest Diseases and Insect PestsNational Institute of Forest ScienceSeoulSouth Korea
  2. 2.Forest Biodiversity DivisionKorea National ArboretumPocheonRepublic of Korea

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