RETRACTED: Induction of Systemic Resistance in Tomato against Ralstonia solanacearum by Pseudomonas fluorescens

Abstract

The biological control agent Pseudomonas fluorescens was used against the bacterial wilt causing Ralstonia solanacearum. The present investigation focuses on the role of defense related enzymes in imparting resistance in tomato against R. solanacearum. A total of ten rhizobacterial isolates were screened against R. solanacearum, of which three isolates (Pf3, Pf5 & Pf8) showed a maximum inhibition against the pathogen and were further identified as P. fluorescens by 16S rRNA analysis. Seedling treatment with P. fluorescens isolates significantly enhanced the quality of seed germination and seedling vigor. The three P. fluorescens strains were further tested for their ability to induce the production of defense-related enzymes in plants. Involvement of defense related enzymes in bacterial wilt pathogenesis was studied in susceptible tomato cultivar (Arka Meghali).