Especially <i>M. persicae</i> reduced aliphatic glucosinolate levels under all water conditions.

<p>Glucosinolate (GS) levels in <i>A. thaliana</i> plants cultivated under different water conditions and after one week feeding of <i>M. persicae</i> (Mp) and <i>B. brassicae</i> (Bb) (n = 5, different letters indicate significant differences in total glucosinolate levels of control and aphid-treated plants within a water treatment, different Greek letters indicate significant differences in single compounds within each water treatments for the main compounds, Tukey’s HSD test <i>P</i><0.05; minor compounds not significantly different).