Table III. Plastid division mutants used in this study.

Gene	Name(s)	Mutant Alleles Used in This Study	Chloroplasts per Mesophyll Cell
At1g75010	ARC3	arc3 (Ler)a: EMSb, Pyke and Leech (1992)c	13–18
		arc3-2 (Col): T-DNA insertion line SALK_057144d, Shimada et al. (2004)
		arc3-3 (Col): T-DNA insertion line SALK_012892
At3g19720	ARC5	arc5 (Ler): EMS, Pyke and Leech (1992)	3–15
		arc5-2 (Col): T-DNA insertion line SAIL_71_D11, Miyagishima et al. (2006)
At5g42480	ARC6	arc6 (Ws): T-DNA insertion line, Pyke et al. (1994)	1–2
		arc6-5 (Col): T-DNA insertion line SAIL_693_G04, Glynn et al. (2008)
At5g55280	ARC10 (AtFtsZ1)	arc10 (Ler): EMS, Rutherford (1996)	23e
		arc10-2 (Col): T-DNA insertion line SALK_073878, Yoder et al. (2007) (AtftsZ1-1-Δ1)
At5g24020	ARC11 (AtMinD1)	arc11 (Ler): point mutation, Marrison et al. (1999), Fujiwara et al. (2004)	29–33f
At1g69390	ARC12 (AtMinE1)	arc12 (Ler): 1196GC to A–, Pyke et al. (1994); Glynn et al. (2007)	1–2

^aMutant alleles are in Ler, Col, or Ws.

^bMutation arose through mutagenesis with ethyl methanesulfonate.

^cReferences are to previous descriptions of the mutant alleles.

^dDetails of the T-DNA insertion sites are in Supplemental Figure S4.

^eMutants have one greatly enlarged chloroplast and some smaller chloroplasts in each cell.

^fMutants have a heterogeneous population of chloroplasts, 40% to 50% wild-type size, 50% to 60% larger than wild type.