Table I.

ALA-synthesizing capacity and chlorophyll content in leaves of wild-type (SNN) and transgenic tobacco plants overexpressing Arabidopsis PPX I

ALAChlorophyll
Leaf no. 4Leaf no. 4Leaf no. 6
nmol g−1 fresh wt μg g−1 fresh wt
SNN403.19 ± 63.12947.22 ± 31.961,050.13 ± 78.76
S7409.73 ± 25.29824.53 ± 8.60921.52 ± 11.72
S16440.34 ± 51.79925.13 ± 91.181,059.07 ± 183.98
S19424.80 ± 44.741,049.94 ± 100.601,170.23 ± 5.38

ALA and chlorophyll were measured photometrically as described in “Materials and Methods.” Values represent means ±sd of one extraction from identical leaves of three independent plants.