School of Life Sciences and Institute for Microorganisms, Kyungpook National University, Daegu, 702-701, Republic of Korea.
J Microbiol. 2012 Jun;50(3):380-5. doi: 10.1007/s12275-012-1477-y. Epub 2012 Jun 30.
Plant growth promoting rhizobacteria Ochrobactrum lupini KUDC1013 and Novosphingobium pentaromativorans KUDC1065 isolated from Dokdo Island, S. Korea are capable of eliciting induced systemic resistance (ISR) in pepper against bacterial spot disease. The present study aimed to determine whether plant growth-promoting rhizobacteria (PGPR) strains including strain KUDC1013, strain KUDC1065, and Paenibacillus polymyxa E681 either singly or in combinations were evaluated to have the capacity for potential biological control and plant growth promotion effect in the field trials. Under greenhouse conditions, the induced systemic resistance (ISR) effect of treatment with strains KUDC1013 and KUDC1065 differed according to pepper growth stages. Drenching of 3-week-old pepper seedlings with the KUDC-1013 strain significantly reduced the disease symptoms. In contrast, treatment with the KUDC1065 strain significantly protected 5-week-old pepper seedlings. Under field conditions, peppers treated with PGPR mixtures containing E681 and KUDC1013, either in a two-way combination, were showed greater effect on plant growth than those treated with an individual treatment. Collectively, the application of mixtures of PGPR strains on pepper might be considered as a potential biological control under greenhouse and field conditions.
从韩国独岛分离的促生根瘤菌 Ochrobactrum lupini KUDC1013 和 Novosphingobium pentaromativorans KUDC1065 能够诱导辣椒对细菌性斑点病产生系统诱导抗性 (ISR)。本研究旨在确定促生根瘤菌 (PGPR) 菌株，包括菌株 KUDC1013、KUDC1065 和 Paenibacillus polymyxa E681，单独或组合使用是否具有在田间试验中进行潜在生物防治和促进植物生长的能力。在温室条件下，处理菌株 KUDC1013 和 KUDC1065 的诱导系统抗性 (ISR)效应因辣椒生长阶段而异。用 KUDC-1013 菌株浇灌 3 周龄辣椒幼苗可显著减轻病害症状。相比之下，用 KUDC1065 菌株处理可显著保护 5 周龄辣椒幼苗。在田间条件下，与单独处理相比，用含有 E681 和 KUDC1013 的 PGPR 混合物处理的辣椒在植物生长方面表现出更大的效果。总的来说，在温室和田间条件下，将促生根瘤菌菌株混合物应用于辣椒可能被视为一种潜在的生物防治方法。
