The influence of a non-pathogenic pseudomonas patida strain BTP1 on reproductive and dvelopment of grape phylloxera

Abstract

Some non-pathogenic rhizobacteria called Plant Growth Promoting Rhizobacteria (PGPR) possess the capacity to induce defense mechanisms effective in plant against pathogens. The effect of Pseudomonas putida BTP1 on reproduction and development of phylloxera, which infested the roots of our local grape variety “Balady”, was evaluated. Our results showed that the life table of grape phylloxera was different between treated and control plants. The percentage of matured females, developmental time, fecundity and oviposition period were reduced when plants were treated with bacteria. The results showed that the phylloxera resistance was influenced by root soaking duration in P. putida BTP1 suspension. The present study provides good information on the possibility of using Pseudomonas putida BTP1 to increase the resistance of grape to phylloxera.