Figure 4.

Performance of M. persicae Aphids on the Arabidopsis Accessions Col-0 and C24, a NIL with Col-0 Background, and a C24 Insertion in the SLI1 QTL Region, and the T-DNA Mutants sli1-1 and sli1-2.

(A) and (B) Mean duration of salivation in the phloem (A) and mean duration of sustained (>10 min) phloem ingestion (B) (8-h electrical penetration graph recordings; 20°C: Col-0 n = 13, C24 n = 12, NIL n = 12, sli1-1 n = 16, sli1-2 n = 13; 26°C: Col-0 n = 20, C24 n = 14, NIL n = 14, sli1-1 n = 20, sli1-2 n = 16).

(C) and (D) Aphid age at start of reproduction (Kaplan-Meier curve of Cox proportional hazards model) (C) and aphid population size (D), 2 weeks after the infestation with one neonate aphid per plant (Col-0 n = 16, C24 n = 18, NIL n = 18, sli1-1 n = 15, sli1-2 n = 15). Bars represent mean ± se; ns, nonsignificant; *P < 0.05, **P < 0.01, and ***P < 0.001 (Kruskal-Wallis group-wise comparisons within temperature treatment), different letters refer to significant differences (P < 0.05, Mann-Whitney U pairwise tests)).