Table 1.

Carotenoid content of B. corticulans chloroplasts

Light conditions	Sx/Car	S/Car	Sx/S	Vx/Car	NPQ
Dark	0.209 ± 0.001	0.174 ± 0.001	1.200 ± 0.002	0.054 ± 0.0003	0.0 ± 0.0
Low light	0.212 ± 0.001	0.175 ± 0.001	1.212 ± 0.003	0.054 ± 0.0002	0.2 ± 0.02
Moderate light	0.224 ± 0.001	0.179 ± 0.001	1.250 ± 0.005	0.053 ± 0.001	1.01 ± 0.01
High light	0.240 ± 0.009	0.190 ± 0.008	1.264 ± 0.005	0.055 ± 0.001	2.01 ± 0.01

Chloroplasts were either dark adapted or exposed to low (211 μmol photons m⁻² s⁻¹, 5 min), moderate (760 μmol photons m⁻² s⁻¹, 30 min) and high light intensity (2500 μmol photons m⁻² s⁻¹, 30 min) to induce non-photochemical quenching (NPQ). The corresponding NPQ values are shown in the table. Carotenoid changes are presented as the ratio between relative integrated peak areas of HPLC chromatograms. Data are mean ± SEM of three repeats

Car total carotenoid content (siphonaxanthin, all-trans neoxanthin, 9′-cis neoxanthin, violaxanthin, siphonein, ε-carotene and α-carotene), S siphonein, Sx siphonaxanthin, Vx violaxanthin