First Report on the Shoot Blight Disease of Gaenari (Forsythia koreana) Caused by Septotinia sp. in Korea
In early spring, water-soaked lesions appeared on the petals and leaves of gaenari (Forsythia koreana), and the tissues were necrotic and dry. Cankers appeared on the infected branches around late spring and the above part of a branch withered and died. However, it was very rare that the base of the...
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| Format: | Article |
| Language: | English |
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Hanrimwon Publishing Company
2023-09-01
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| Series: | Research in Plant Disease |
| Subjects: | |
| Online Access: | http://www.online-rpd.org/upload/pdf/RPD-2023-29-3-234.pdf |
| _version_ | 1797659753585836032 |
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| author | Ji Hye Woo Mikyeong Kim Kun-Woo Lee Sang-sup Han Byeongjin Cha |
| author_facet | Ji Hye Woo Mikyeong Kim Kun-Woo Lee Sang-sup Han Byeongjin Cha |
| author_sort | Ji Hye Woo |
| collection | DOAJ |
| description | In early spring, water-soaked lesions appeared on the petals and leaves of gaenari (Forsythia koreana), and the tissues were necrotic and dry. Cankers appeared on the infected branches around late spring and the above part of a branch withered and died. However, it was very rare that the base of the cankered-branch died. The identical fungi were isolated from the lesions on various tissues, and they grew with white colonies on potato dextrose agar medium. The fungus grew most actively at 23°C and produced many sclerotia of various sizes. In a pathogenicity assay in which mycelial and sclerotial suspensions were inoculated on each organ of forsythia, it was found that the pathogen infects the flower only, but not the leaves or branches. Symptoms on the flowers spread to the next leaves and branches over time and the infected branches were eventually withered. To identify the isolates, DNA sequences of four phylogenetic markers including ITS, LSU, Tub2, and CAL were analyzed and all isolates were identified as a species in the genus Septotinia. This is not only the first report of gaenari (forsythia) shoot blight caused by the fungus Septotinia sp., but also the first report on the genus Septotinia as a plant pathogen in Korea. |
| first_indexed | 2024-03-11T18:19:45Z |
| format | Article |
| id | doaj.art-07ea9d5ef77c4721bfd29a8264b7c92b |
| institution | Directory Open Access Journal |
| issn | 1598-2262 2233-9191 |
| language | English |
| last_indexed | 2024-03-11T18:19:45Z |
| publishDate | 2023-09-01 |
| publisher | Hanrimwon Publishing Company |
| record_format | Article |
| series | Research in Plant Disease |
| spelling | doaj.art-07ea9d5ef77c4721bfd29a8264b7c92b2023-10-15T23:30:41ZengHanrimwon Publishing CompanyResearch in Plant Disease1598-22622233-91912023-09-0129323424210.5423/RPD.2023.29.3.2341797First Report on the Shoot Blight Disease of Gaenari (Forsythia koreana) Caused by Septotinia sp. in KoreaJi Hye Woo0Mikyeong Kim1Kun-Woo Lee2Sang-sup Han3Byeongjin Cha4Goyang Agricultural Technology Center, Goyang 10563, KoreaDepartment of Plant Medicine, Chungbuk National University, Cheongju 28644, KoreaDepartment of Forest Environment Science, Jeonbuk National University, Jeonju 54896, KoreaDepartment of Forest Environment Science, Jeonbuk National University, Jeonju 54896, KoreaDepartment of Plant Medicine, Chungbuk National University, Cheongju 28644, KoreaIn early spring, water-soaked lesions appeared on the petals and leaves of gaenari (Forsythia koreana), and the tissues were necrotic and dry. Cankers appeared on the infected branches around late spring and the above part of a branch withered and died. However, it was very rare that the base of the cankered-branch died. The identical fungi were isolated from the lesions on various tissues, and they grew with white colonies on potato dextrose agar medium. The fungus grew most actively at 23°C and produced many sclerotia of various sizes. In a pathogenicity assay in which mycelial and sclerotial suspensions were inoculated on each organ of forsythia, it was found that the pathogen infects the flower only, but not the leaves or branches. Symptoms on the flowers spread to the next leaves and branches over time and the infected branches were eventually withered. To identify the isolates, DNA sequences of four phylogenetic markers including ITS, LSU, Tub2, and CAL were analyzed and all isolates were identified as a species in the genus Septotinia. This is not only the first report of gaenari (forsythia) shoot blight caused by the fungus Septotinia sp., but also the first report on the genus Septotinia as a plant pathogen in Korea.http://www.online-rpd.org/upload/pdf/RPD-2023-29-3-234.pdfflower infectioinforsythiasclerotiumseptotiniashoot blight |
| spellingShingle | Ji Hye Woo Mikyeong Kim Kun-Woo Lee Sang-sup Han Byeongjin Cha First Report on the Shoot Blight Disease of Gaenari (Forsythia koreana) Caused by Septotinia sp. in Korea Research in Plant Disease flower infectioin forsythia sclerotium septotinia shoot blight |
| title | First Report on the Shoot Blight Disease of Gaenari (Forsythia koreana) Caused by Septotinia sp. in Korea |
| title_full | First Report on the Shoot Blight Disease of Gaenari (Forsythia koreana) Caused by Septotinia sp. in Korea |
| title_fullStr | First Report on the Shoot Blight Disease of Gaenari (Forsythia koreana) Caused by Septotinia sp. in Korea |
| title_full_unstemmed | First Report on the Shoot Blight Disease of Gaenari (Forsythia koreana) Caused by Septotinia sp. in Korea |
| title_short | First Report on the Shoot Blight Disease of Gaenari (Forsythia koreana) Caused by Septotinia sp. in Korea |
| title_sort | first report on the shoot blight disease of gaenari forsythia koreana caused by septotinia sp in korea |
| topic | flower infectioin forsythia sclerotium septotinia shoot blight |
| url | http://www.online-rpd.org/upload/pdf/RPD-2023-29-3-234.pdf |
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