Reduced Bacterial Wilt in Tomato Plants by Bactericidal Peroxyacetic Acid Mixture Treatment

• Main Authors: Jeum Kyu Hong, Su Jeong Jang, Young Hee Lee, Yeon Sook Jo, Jae Gill Yun, Hyesu Jo, Chang-Jin Park, Hyo Joong Kim
• Format: Article
• Language: English
• Published: Hanrimwon Publishing Company 2018-02-01
• Series: The Plant Pathology Journal
• Subjects: disease control; peroxyacetic acid; tomato bacterial wilt
• Online Access: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5796753/

Peroxyacetic acid mixture Perosan, composed of peroxyacetic acid, hydrogen peroxide and acetic acid, was evaluated for eco-friendly management of tomato bacterial wilt by Ralstonia pseudosolanacearum. Perosan drastically suppressed in vitro growth of R. pseudosolanacearum in liquid cultures in dose- and incubation time-dependent manners. Higher perosan doses (0.1 and 1%) caused lowered pH and phytotoxicity to detached leaves of two tomato cultivars Cupirang and Benekia 220 in aqueous solution. Treatment with 0.01% of Perosan delayed wilting symptom significantly in the detached leaves of two cultivars inoculated with R. pseudosolanacearum (10⁷ cfu/ml). Soil drenching of 5% Perosan solution in pots caused severe tissue collapse of tomato seedlings at the four-week-old stage of two tomato cultivars. Treatment with 1% Perosan by soil-drenching significantly reduced bacterial wilt in the tomato seedlings of two cultivars. These findings suggest that Perosan treatment can be applied to suppress bacterial wilt during tomato production.