o:8807 "The Potential of Pseudomonas koreensis R4.45P to Suppress Hymenoscyphus fraxineus Development in Fraxinus excelsior Leaves" en Abstract: "Due to the intense ash dieback in Europe, which begins with the appearance of leaf infection, this study presents the results of the research on the impact of a selected isolate Pseudomonas koreensis R4.45P on the development of Hymenoscyphus fraxineus in the rachises of Fraxinus excelsior. Preliminary in vitro testing of P. koreensis R4.45P showed a statistically significantly lower growth of H. fraxineus compared to control cultures that were not exposed to this bacterium. The results of the in planta test on F. excelsior seedlings showed a statistically significant decrease in dieback occurrence and the length of necrotic lesions caused by H. fraxineus in rachises treated with P. koreensis R4.45P compared to untreated rachises. Additionally, leaf mortality in F. excelsior seedlings treated with P. koreensis R4.45P was statistically significantly lower. This study is the first to show the possibility of application of antagonistic bacteria P. koreensis R4.45P to effectively slow the initial stage of H. fraxineus development." Keywords: biological control European ash Hymenoscyphus fraxineus infection slowdown 1552101 1437-4781 1552099 10.1111/efp.70019 2025-12-23T11:57:57.037Z 44 yes 46 Aleksandar Vemić 0000-0001-9195-8967 46 Sanja Jovanović 0000-0001-9468-2628 46 Tanja Berić 0000-0002-4860-2225 46 Aleksandar Lučić 0000-0002-4473-1791 46 Ljubinko Rakonjac 0000-0002-8736-6771 46 Suzana Mitrović 0000-0003-1855-4418 46 Vladan Popović 0000-0003-4326-3364 application/pdf 335572 https://unilib.phaidrabg.rs/o:8807 no yes 1 70 92000001 71A07 Forest Pathology 55 e70019 Willey 2025