Table 1.

Distribution of the Plants Overexpressing AtSulA in the Various Phenotype Categories

Line	Weak	Medium	Severe	Variable in One Cell	Wild Type	Total
2	0	2	0	1	4	7
G6	1	1	2	1	11	16
M7	0	2	0	5	4	11
M11	3	3	0	3	3	12
M12	1	1	0	0	5	7
Total	5	9	2	10	27	53

Isolated mesophyll cells were prepared using three different fully expanded leaves of 30-d-old plants. For each sample, at least 200 cells were observed. Because each plant could display a variety of phenotypes depending on the observed cell, the category of each plant was assigned using the most severe phenotype represented. Weak, 40 to 60 chloroplasts per mesophyll cell; medium, 10 to 40; severe, 1 to 10; variable in one cell, numerous normal chloroplasts together with one to four larger ones (5 to 20 times larger in section compared to the wild type).