Table 3.
Sensitivity to NLP Is Restricted to Dicotyledonous Plant Cells
| Cell Type | NLP Concentration | Survivors Relative to Control (%) (±sd) |
|---|---|---|
| COS-7 | ||
| (DMEM) | 1 μM NLPPp | 57.5 ± 0.5 |
| (Quantum 333) | 1 μM NLPPp | 85.5 ± 6.5 |
| Human fibroblasts (GM5756) | ||
| (DMEM) | 1 μM NLPPp | 85.5 ± 7.5 |
| (Quantum 333) | 1 μM NLPPp | 120.5 ± 17.5 |
| Sheep erythrocytes (PBS) | 1 μM NLPPp | 102.3 ± 4.7 |
| − Ca2+ | 2 μM NLPPya | 97.7 ± 2.9 |
| Sheep erythrocytes (PBS) | 1 μM NLPPs | 98.4 ± 5.7 |
| + Ca2+ | 2 μM NLPPya | 96.4 ± 12.1 |
| P. pastoris spheroplasts | 1 μM NLPPs | 86.2 ± 9.5 |
| 2 μM NLPPya | 52.0 ± 4.3 | |
| P. patens | 2 μM NLPPp | 100.7 ± 11.8 |
| Maize cell culture | 0.1 μM NLPPya | 112.3 ± 2.6 |
| 1 μM NLPPya | 91.1 ± 2.8 | |
| Arabidopsis cell culture | 1 μM NLPPya | 40.3 ± 4.6 |
| Parsley cell culture | 1 μM NLPPya | 7.2 ± 0.8 |
| Maize protoplasts | 0.1 μM NLPPp | 88.3 ± 11.8 |
| Arabidopsis protoplasts | 1 μM NLPPp | 89.7 ± 8.4 |
| 0.1 μM NLPPya | 102.2 ± 15.7 | |
| 1 μM NLPPya | 97.2 ± 7.5 | |
| 0.1 μM NLPPp | 5.7 ± 2.4 | |
| 1 μM NLPPp | 3.1 ± 1.6 | |
| 0.1 μM NLPPya | 4.2 ± 0.9 | |
| 1 μM NLPPya | 1.0 ± 0.9 | |
| Parsley protoplasts | 0.1 μM NLPPp | 4.4 ± 0.8 |
| 1 μM NLPPp | 2.2 ± 1.0 | |
| 0.1 μM NLPPya | 2.2 ± 0.9 | |
| 1 μM NLPPya | 0.6 ± 0.6 |
Various cell types were treated with different NLP preparations at the concentrations indicated. Cell death rates were determined at times and using protocols described in Methods. Values represent average values ± sd.