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Reactive oxygen species (ROS), particularly hydrogen peroxide (H2O2), play an important role in signalling in various cellular processes. The involvement of H2O2 in the Medicago truncatula–Sinorhizobium meliloti symbiotic interaction raises questions about its effect on gene expression.
A transcriptome analysis was performed on inoculated roots of M. truncatula in which ROS production was inhibited...