Title Biological Control and Plant Growth Promoting Capacity of Rhizobacteria on Pepper under Greenhouse and Field Conditions
Author Mi-Seon Hahm1, Marilyn Sumayo1, Ye-Ji Hwang1, Seon-Ae Jeon1, Sung-Jin Park1, Jai Youl Lee1, Joon-Hyung Ahn2, Byung-Soo Kim2, Choong-Min Ryu3, and Sa-Youl Ghim1*
Address 1School of Life Sciences and Institute for Microorganisms, Kyungpook National University, Daegu 702-701, Republic of Korea, 2Department of Horticulture, Kyungpook National University, Daegu 702-701, Republic of Korea, 3Laboratory of Microbial Genomics, Industrial Biotechnology and Bioenergy Research Center, KRIBB, Daejeon 305-333, Republic of Korea
Bibliography Journal of Microbiology, 50(3),380-385, 2012,
Key Words Dokdo Island, biological control, induced systemic resistance (ISR), plant growth promoting rhizobacteria (PGPR), pepper (Capsicum annuum)
Abstract 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.