Efficacy of L-arabinose in managing cucumber Fusarium wilt and the underlying mechanism of action.

Autor: Yu M; The United Graduate School of Agricultural Science, Gifu University, Gifu, Japan., Yuliana R; The United Graduate School of Agricultural Science, Gifu University, Gifu, Japan., Tumewu SA; Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan., Bao W; iGCORE, Gifu University, Gifu, Japan., Suga H; The United Graduate School of Agricultural Science, Gifu University, Gifu, Japan.; Life Science Research Center, Gifu University, Gifu, Japan., Shimizu M; The United Graduate School of Agricultural Science, Gifu University, Gifu, Japan.; Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan.
Jazyk: angličtina
Zdroj: Pest management science [Pest Manag Sci] 2024 Nov 06. Date of Electronic Publication: 2024 Nov 06.
DOI: 10.1002/ps.8523
Abstrakt: Background: Cucumber Fusarium wilt (CFW), triggered by Fusarium oxysporum f. sp. cucumerinum, leads to substantial yield reductions in global cucumber (Cucumis sativus L.) production. Common management strategies for CFW include soil fumigation, grafting, and crop rotation. However, these methods have limitations regarding safety and efficacy stability, necessitating the development of new, cost-effective, and eco-friendly control strategies. Our prior research demonstrated that L-arabinose, an inexpensive and safe sugar commonly used in food and beverages, effectively suppressed bacterial wilt in tomatoes. This study explores the potential of L-arabinose in managing CFW and investigates its mechanism of action.
Results: Soil applications of L-arabinose, ranging from 0.00001 to 0.01%, effectively suppressed CFW. The most significant suppressive effect was observed at 0.01%, reducing the disease severity index by 67.5% compared to the control treatment. Microscopic examination of transverse root sections showed that pathogen hyphae colonized the epidermis but seldom penetrated the cortical layer of roots in L-arabinose-treated seedlings. In contrast, the entire root tissue of control seedlings was colonized by the pathogen. Quantitative real-time PCR revealed a significant increase in the expression of defense-related genes dependent on salicylic acid, jasmonic acid, and ethylene in L-arabinose-treated plants compared to control plants, 6 and 10 days post pathogen inoculation.
Conclusion: This study demonstrated that soil application of L-arabinose can effectively suppress CFW by priming root tissues for multiple defense signaling pathways. Therefore, L-arabinose holds potential as a new fungicide for managing CFW. © 2024 The Author(s). Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
(© 2024 The Author(s). Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.)
Databáze: MEDLINE
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