Table 1.
Background on wild-type (WT) and mutant Arabidopsis thaliana plants
| Plant | Ecotype | Chloroplast number/cell | Chloroplast size (μm2) | Gene locus | Role of gene product | References |
| WT | Col | 100 | 50 | |||
| phot 1 | Col | nd | nd | At3g45780 | Blue-light receptor that mediates chloroplast movement (accumulation) | Christie, 2007 |
| phot2 | Col | nd | nd | At5g58140 | Blue-light receptor that mediates chloroplast movement (accumulation and avoidance) | Christie, 2007 |
| phot1/phot2 | Col | nd | nd | See information above | Christie, 2007 | |
| arc6-4 | Col | 2 | 1000 | At5g42480 | DnaJ-like protein localized to the plastid division site; contributes to assembly, stabilization of the Z-ring | Isolated by authors |
| WT | Ler | 120 | 50 | |||
| arc1-1 | Ler | 108 | 25 | nd | Accelerates proplastid division; acts independent of arc 3, 5, 6, and 11 | Marrison et al., 1999 |
| arc11-1 = MinD | Ler | 30 | 110 | At5g24020 | Stromal, Ca2+-dependent ATPase required for correct positioning of chloroplast division apparatus | Fujiwara et al., 2004 |
| arc3-1 | Ler | 18 | 200–300 | At1g75010 | Stromal protein with FtsZ-like part and kinase; involved in division site placement | Maple et al., 2007 |
| arc5-1 | Ler | 13 | 300–900 | At3g19720 | Cytosolic dynamin-related protein; facilitates separation of daughter chloroplasts | Gao et al., 2003 |
| arc5-1/11-1 | Ler | 12 | 160 | See above | Marrison et al., 1999 | |
| arc6-1/1-1 | Ler | 9 | 530 | See above | Marrison et al., 1999 | |
| arc6-1 | Ler | 2 | 1000 | See above | Vitha et al., 2003 | |
| WT | Ws | 85 | 50 | |||
| arc7-1 | Ws | 80 | 40 | nd | Involved in chloroplast development rather than division itself | Rutherford, 1996 |
| arc8-1 | Ws | 45 | 110 | nd | nd | Rutherford, 1996 |
| arc10-1 | Ws | 38 | 170 (mix) | nd | nd | Rutherford, 1996 |
| arc9-1 | Ws | 34 | 140 | nd | nd | Rutherford, 1996 |
| arc6-1 | Ws | 2 | 1000 | See above | Vitha et al., 2003 |
Three ecotypes [Columbia (Col), Landsberg erecta (Ler), and Wassilewskija (Ws)] were used in this study. The information on chloroplast numbers, sizes, and the affected genes was obtained from Aldridge et al. (2005), TAIR (www.arabidopsis.org), and the references cited. nd = not determined.