Increased activity of the pro/antioxidant system of potato microplants by rhizospheric bacterias in aeroponics conditions

Abstract

The improvement of plants in in vitro culture is an obligatory stage of potato seed production. Plant-growth-promoting rhizobacteria contribute to an increase in plant resistance to stress factors, including at the stage of adaptation of microplants to ex vitro conditions. The purpose of this investigation was to study the mechanisms of antioxidant protection of potato microclones during inoculation with rhizobacteria in the process of their adaptation to ex vitro conditions in an aeroponic installation. In experiments, microplants of potato Nevsky and Condor cultivars inoculated in vitro with rhizobacteria Azospirillum baldaniorum Sp245 and Ochrobactrum cytisi IPA7 were used. In the process of adaptation in aeroponics conditions, microplants were analyzed for morphometric and biochemical parameters for 21 days. It was found that the bacterization of microplants contributed to the regulation of the pro/antioxidant system, leading to a decrease in oxidative stress and better and faster survival of plants ex vitro.