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Induced resistance against chewing herbivores. Shown are means (±SE) of P. brassicae (open bars) and S. littoralis (shaded bars) larval mass on Arabidopsis plants that were either left untouched (control), previously induced with S. littoralis caterpillars or previously induced with methyl jasmonate (JA). The average of resistance across seven Arabidopsis accessions is shown. Different letters above the bars means a difference after the post-hoc Tukey test, P <0.05.
