Screening Method to Identify Watermelon Cultivars Resistant to Acidovorax citrulli, the Cause of Bacterial Fruit Blotch
Acidovorax citrulli is a causative pathogen for bacterial fruit blotch (BFB) in Cucurbitaceae, including watermelon. The most effective method to control this plant disease is to cultivate resistant cultivars. Herein, this study aimed to establish an efficient screening method to determine the resis...
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| Language: | English |
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Hanrimwon Publishing Company
2024-12-01
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| Series: | The Plant Pathology Journal |
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| Online Access: | http://ppjonline.org/upload/pdf/PPJ-OA-08-2024-0122.pdf |
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| author | Soo Min Lee Gahyeon Kim Hun Kim Gyung Ja Choi |
| author_facet | Soo Min Lee Gahyeon Kim Hun Kim Gyung Ja Choi |
| author_sort | Soo Min Lee |
| collection | DOAJ |
| description | Acidovorax citrulli is a causative pathogen for bacterial fruit blotch (BFB) in Cucurbitaceae, including watermelon. The most effective method to control this plant disease is to cultivate resistant cultivars. Herein, this study aimed to establish an efficient screening method to determine the resistance of watermelon cultivars against A. citrulli. To this end, we explored the virulence of seven A. citrulli isolates belonging to clonal complex group I or II based on gltA gene analysis. Furthermore, we evaluated the BFB occurrence in the seedlings of two arbitrarily selected watermelon cultivars according to the growth stage of the watermelon seedlings, inoculum concentration, and incubation temperature after inoculation in a humidity chamber. Taken together, we established the following method to determine the resistance of watermelon cultivars against A. citrulli: watermelon seedlings at the fully expanded two-leaf stage can be spray-inoculated with an A. citrulli bacterial suspension at a concentration of 1.0 × 106 cfu/ml; after incubation for 48 h at 28°C in a humidity chamber, the plants were cultivated in a growth chamber at 25°C with 80% relative humidity under a 12-h light/dark cycle; and BFB occurrence on the plants can be investigated at 7 dpi by visual estimation of the diseased leaf area (%). Based on these experimental methods, we investigated the resistance degree of 43 commercial watermelon cultivars against A. citrulli KACC 17005. Therefore, our results can provide important information for the development of resistant cultivars against A. citrulli. |
| format | Article |
| id | doaj-art-ce38d75cc33249f885d499033e49da36 |
| institution | OA Journals |
| issn | 1598-2254 2093-9280 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Hanrimwon Publishing Company |
| record_format | Article |
| series | The Plant Pathology Journal |
| spelling | doaj-art-ce38d75cc33249f885d499033e49da362025-08-20T02:19:37ZengHanrimwon Publishing CompanyThe Plant Pathology Journal1598-22542093-92802024-12-0140659360210.5423/PPJ.OA.08.2024.01222475Screening Method to Identify Watermelon Cultivars Resistant to Acidovorax citrulli, the Cause of Bacterial Fruit BlotchSoo Min Lee0Gahyeon Kim1Hun Kim2Gyung Ja Choi3 Eco-Friendly New Materials Research Center, Korea Research Institute of Chemical Technology, Daejeon 34114, Korea Eco-Friendly New Materials Research Center, Korea Research Institute of Chemical Technology, Daejeon 34114, Korea Eco-Friendly New Materials Research Center, Korea Research Institute of Chemical Technology, Daejeon 34114, Korea Eco-Friendly New Materials Research Center, Korea Research Institute of Chemical Technology, Daejeon 34114, KoreaAcidovorax citrulli is a causative pathogen for bacterial fruit blotch (BFB) in Cucurbitaceae, including watermelon. The most effective method to control this plant disease is to cultivate resistant cultivars. Herein, this study aimed to establish an efficient screening method to determine the resistance of watermelon cultivars against A. citrulli. To this end, we explored the virulence of seven A. citrulli isolates belonging to clonal complex group I or II based on gltA gene analysis. Furthermore, we evaluated the BFB occurrence in the seedlings of two arbitrarily selected watermelon cultivars according to the growth stage of the watermelon seedlings, inoculum concentration, and incubation temperature after inoculation in a humidity chamber. Taken together, we established the following method to determine the resistance of watermelon cultivars against A. citrulli: watermelon seedlings at the fully expanded two-leaf stage can be spray-inoculated with an A. citrulli bacterial suspension at a concentration of 1.0 × 106 cfu/ml; after incubation for 48 h at 28°C in a humidity chamber, the plants were cultivated in a growth chamber at 25°C with 80% relative humidity under a 12-h light/dark cycle; and BFB occurrence on the plants can be investigated at 7 dpi by visual estimation of the diseased leaf area (%). Based on these experimental methods, we investigated the resistance degree of 43 commercial watermelon cultivars against A. citrulli KACC 17005. Therefore, our results can provide important information for the development of resistant cultivars against A. citrulli.http://ppjonline.org/upload/pdf/PPJ-OA-08-2024-0122.pdfbacterial fruit blotchbioassayclonal complexdisease resistanceenvironmental condition |
| spellingShingle | Soo Min Lee Gahyeon Kim Hun Kim Gyung Ja Choi Screening Method to Identify Watermelon Cultivars Resistant to Acidovorax citrulli, the Cause of Bacterial Fruit Blotch The Plant Pathology Journal bacterial fruit blotch bioassay clonal complex disease resistance environmental condition |
| title | Screening Method to Identify Watermelon Cultivars Resistant to Acidovorax citrulli, the Cause of Bacterial Fruit Blotch |
| title_full | Screening Method to Identify Watermelon Cultivars Resistant to Acidovorax citrulli, the Cause of Bacterial Fruit Blotch |
| title_fullStr | Screening Method to Identify Watermelon Cultivars Resistant to Acidovorax citrulli, the Cause of Bacterial Fruit Blotch |
| title_full_unstemmed | Screening Method to Identify Watermelon Cultivars Resistant to Acidovorax citrulli, the Cause of Bacterial Fruit Blotch |
| title_short | Screening Method to Identify Watermelon Cultivars Resistant to Acidovorax citrulli, the Cause of Bacterial Fruit Blotch |
| title_sort | screening method to identify watermelon cultivars resistant to acidovorax citrulli the cause of bacterial fruit blotch |
| topic | bacterial fruit blotch bioassay clonal complex disease resistance environmental condition |
| url | http://ppjonline.org/upload/pdf/PPJ-OA-08-2024-0122.pdf |
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