Table 1.
Electrical penetration graph (EPG) parameters considered and their relation to Myzus persicae feeding activity on Arabidopsis thaliana.
| Related Tissue/phase | EPG parameter | WT | OE |
|---|---|---|---|
| Epidermal | Time to first probe (min) | 3.6±0.1a | 3.7±0.0a |
| Time from 1st probe to 1st phloem contact (min) | 87.3±1.3b | 135.6±0.7a | |
| Phloem | Total time of phloem salivation (min) | 9.9±0.2a | 8.3±0.1b |
| Number of phloem salivation events | 7.6±0.5a | 2.7±0.2b | |
| Average duration of phloem salivation (min) | 0.9±0.0a | 0.8±0.0a | |
| Total time of phloem ingestion (min) | 104.1±1.4a | 24.5±0.2b | |
| Number of phloem ingestion events | 7.0±0.5a | 1.7±0.1b | |
| Average duration of phloem ingestion (min) | 25.3±0.6a | 12.7±0.30b | |
| Total time of sustained (>10 min) phloem ingestion | 103±9.4a | 20.4±2.5b | |
| Number of sustained (>10 min) phloem ingestion | 3.9±0.6a | 1.2±0.3b | |
| Average duration of sustained (>10 min) phloem ingestion | 25.4±1.5a | 15.7±1.7b | |
| All tissues | Total time of non-probing (NP) (min) | 67.2±0.4b | 98.3±1.3a |
| Number of NP | 38.7±0.4b | 58.4±0.9a | |
| Potential drops (PD) | Total time of PD (min) | 13.9±0.6b | 17.8±0.7a |
| Number of PD | 182.7±1.3b | 442.6±1.4a | |
| Derailed Stylet (F) | Total time of F (min) | 14.0±3.5b | 42.94±0.4a |
| Number of F | 0.5±0.1b | 3.5±0.3a | |
| Xylem (G) | Total time of G (min) | 61.2±1.2a | 14.8±3.3b |
| Number of G | 1.3±0.3b | 1.0±0.2b |
Values represent means ± SEs from 15 independent experiments. Different letters indicate significant differences (P < 0.05) between the treatments.