Enhanced Control of Pepper Anthracnose through Co-Application of Paenibacillus polymyxa GYUN-2285 and Pseudomonas protegens GYUN-2679
Year: 2026
Type: article
Abstract: Anthracnose disease caused by Colletotrichum species is one of the most economically important, frequently leading to substantial yield and quality losses. This study investigated the biocontrol potential of two rhizosphere-associated bacteria, Paenibacillus polymyxa GYUN-2285 and Pseudomonas protegens GYUN-2679 isolated from soil. GYUN-2285 and GYUN-2679 were evaluated separately, and the two strains were subsequently co-applied to examine whether their combined treatment improved pathogen suppression relative to individual applications. Dual culture assays showed that both strains inhibited a broad range of plant pathogenic fungi, including several Colletotrichum species. The combined application of the two strains significantly promoted plant growth, enhancing seedling vigor and development. In planta experiments on pepper fruits revealed that individual applications GYUN-2285 and GYUN-2679 significantly reduced disease serverity. Notably, the combined treatment showed greater numerical suppression than the individual treatments under the tested conditions. This improved performance may be associated with the complementary functional traits of the two bacteria, which may broaden their antagonistic activity against pathogens. These findings suggest that the integration of GYUN-2285 and GYUN-2679 into biocontrol strategies offers a promising, sustainable, and eco-friendly alternative for managing anthracnose in peppers.
Source: The Plant Pathology Journal
Authors: Rosa Jang, Heejin Kim, Jungyeon Kim, Yongho Jeon
Institutions: Gyeongkuk National University, Korea National Arboretum
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: gold
Estimated APC paid: $850
OpenAlex ID: W7162666545
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