Figure 7
Schematic model of regulation of H2O2 for oxidative signaling in magnetoprimed tomato seeds. Bold letters show major contribution of genes involved in the metabolic process. Primimg of tomato seeds with magnetic field of 100 mT (30 min) followed by imbibition for 12 h led to increased production of hydrogen peroxide in the primed seeds. Amongst the genes involved in H2O2 production (amine oxidase, NADPH oxidase and superoxide dismutase), amine oxidase is the key player for H2O2 synthesis. Metallothionein and receptor for activated C kinase 1 are proposed to be responsible for signaling process, besides scavenging and production of H2O2, respectively. Thus, H2O2 acts as pivotal signaling molecule by integrating with phytohormones through reduction in ABA and increase in GA levels for increasing the speed of germination in magnetoprimed tomato seeds.
