Korean Journal of Mycology (Kor. J. Mycol.)
Jung-Hye Choi 1, Jeomsoon Kim 2, Hyeonheui Ham 1, Theresa Lee 1, Ju-Young Nah 1, Hyo-Won Choi 2, Young Kee Lee 2, Sung Kee Hong 2*
1Microbial Safety Team, National Institute of Agricultural Sciences, Wanju 55365, Korea
2Crop Protection Division, National Institute of Agricultural Sciences, Wanju 55365, Korea
Correspondence to sukihong@korea.kr
Korean Journal of Mycology (Kor J Mycol) December, 2018, 46(4):459-466.
https://doi.org/10.4489/KJM.20180050
Accepted: November 01, 2018; Revised: October 22, 2018; Received: October 16, 2018
Published: December, 2018.
© 2018 THE KOREAN SOCIETY OF MYCOLOGY.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
In January 2017, discolored black oat seeds were found in the storage depot of a farmhouse in Jeongeup. Pyrenophora sp. was detected in 45% of the oat seeds surveyed. All Pyrenophora isolates obtained from the seeds were identified as Pyrenophora avenae based on the sequences of internal transcribed spacer (ITS) rDNA regions and glyceraldehyde 3-phosphate dehydrogenase (GPDH) gene and validated by morphological and cultural characterization. A phylogenetic tree constructed using the ITS and GPDH sequences showed that the Korean isolates of P. avenae comprise of four genetically distinct groups. Pathogenicity test validated that the fungus is an infectious agent responsible for discolored black seeds and leaf blotch in oat plants. This is the first study report that P. avenae causes leaf blotch disease of oat in Korea.
Black discolored seeds, Leaf blotch, Oat, Pyrenophora avenae