Bacterial Threat to Willows: Understanding the Epidemiology of Brenneria salicis
(2024) Plant Health Cases — Vol. 2024, n° 2024, p. 1-8 (2024)
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- Brenneria salicis is a bacterial pathogen responsible for watermark disease in willow trees, especially prevalent in mild climates such as parts of Europe. This disease can cause significant economic and ecological losses in areas where willows are cultivated for timber, environmental conservation, and other purposes. Notably, the presence of B. salicis does not always lead to active disease, as it can persist in a dormant state within the tree’s vascular system without causing immediate symptoms, complicating detection and management. This case study explores the biology of B. salicis, focusing on the conditions that trigger its shift from dormancy to active disease. It also examines the bacterium’s transmission, which primarily occurs through water movement within the tree’s xylem or via mechanical means, such as contaminated pruning tools or wind-blown plant debris. This work further evaluates the pathogen’s impact and the effectiveness of current management practices, including sanitation, pruning, quarantine measures, monitoring, and the use of resistant varieties. By deepening the understanding of B. salicis biology, transmission, and management, this case study aims to offer insights into more effective strategies for controlling watermark disease and mitigating its impact on global willow cultivation.
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Pesenti, L. (2024). Bacterial Threat to Willows: Understanding the Epidemiology of Brenneria salicis. Plant Health Cases, 2024(2024), 1-8. https://doi.org/10.1079/planthealthcases.2024.0029 (Original work published 2024)