Table II. Chl a fluorescence parameter of LL- and HL-grown plants

Leaves taken from LL- and HL-exposed wild-type and CAOx plants were dark adapted for 20 min before measurement of their minimal fluorescence (Fo), maximum fluorescence (Fm), and maximum primary photochemical efficiency (Fv/Fm) by a PAM 2100 fluorometer. The Fo, but not Fm or Fv/Fm, was significantly different (P < 0.001) in CAOx plants as compared with wild-type plants grown under LL and HL intensities. The experiment was repeated three times, and the values are means ± sd (n = 10).

Plant LineChl a Fluorescence
FoFmFv/Fm
WT-LL0.20 ± 0.0021.00 ± 0.0030.79 ± 0.003
CAOx-LL0.21 ± 0.0041.03 ± 0.0280.79 ± 0.003
WT-HL0.19 ± 0.0031.0 ± 0.0240.80 ± 0.003
CAOx-HL0.22 ± 0.0041.12 ± 0.0100.80 ± 0.0027