Fig. 4: Comparison of the content of stress-related metabolites in transgenic apple plants under salt and osmotic stress.

A Content of H₂O₂. B Relative water content. C Content of proline. D Content of malondialdehyde (MDA). The error bars indicate the standard deviations (SDs) of three biological replicates, *P < 0.05 (according to t-tests)