Table 3.
Chloroplast avoidance response as measured by leaf light transmission
| Tukey level | % Transmission (means±SD) | |
| Wild-type ecotypes | ||
| Col (100) | A | 27.4±7.6 |
| Ler (120) | B | 22.6±4.8 |
| Ws (85) | B | 21.0±4.4 |
| Ecotype Col | ||
| Wild type (100) | A | 27.4±7.6 |
| phot1 | A | 24.5±4.9 |
| arc6-4 (2) | B | 11.9±4.1 |
| phot1/phot2 | C | –5.0±1.6 |
| phot2 | D | –18.2±2.7 |
| Ecotype Ler | ||
| arc1-1 (108) | A | 24.5±5.3 |
| arc5-1/11–1 (12) | A | 24.3±5.9 |
| arc11-1 (30) | A | 23.5±6.8 |
| Wild type (120) | AB | 22.6±4.8 |
| arc5-1 (13) | AB | 20.1±5.7 |
| arc3-1 (18) | B | 18.2±4.8 |
| arc6-1/1–1 (9) | C | 12.0±4.4 |
| arc6-1 (2) | C | 11.1±3.5 |
| Ecotype Ws | ||
| arc9-1 (34) | A | 23.2±3.9 |
| arc7-1 (80) | AB | 22.3±5.8 |
| Wild type (85) | ABC | 21.0±7.6 |
| arc10-1 (38) | BC | 18.5±5.1 |
| arc8-1 (45) | C | 17.8±4.9 |
| arc6-1 (2) | D | 10.8±3.9 |
Arabidopsis thaliana [ecotypes Columbia (Col), Landsberg erecta (Ler), Wassilewskija (Ws)] wild-type and mutant plants were dark adapted overnight. Mature leaves were then harvested and placed in a device measuring the light transmission of the leaves at increasingly high blue light intensities for a total of 19 h. The values below represent the percentage changes in transmission at the end of the 1 h exposure to 100 μmol photon m−2 s−1 relative to the values at the end of the dark period (avoidance response). The numbers in brackets after the plant types represent the average chloroplast numbers per mesophyll cell. One-way ANOVA for Col: F=372.9, df = 4128, P < 0.0001; for Ler: F=28.7; df = 7,191, P < 0.0001; for Ws: F=24.1, df = 5,132, P < 0.0001. Groups not connected by the same letter are significantly different (Tukey–Kramer HSD).