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. 2020 Oct 8;8:586628. doi: 10.3389/fcell.2020.586628

FIGURE 4.

FIGURE 4

Percentage contribution of particular carotenoids (Neo – neoxanthin, Vio – violaxanthin, Ltx – luteoxanthin, Lut – lutein, Atx – anteraxanthin, p-Lyc – pro-lycopene, Ctx – cryptoxanthin, Car – carotene) in the total carotenoid pool of 5-day etiolated seedlings of Col-0 and carotenoid deficient Arabidopsis mutants (ccr1-1, lut5-1, szl1-1npq1-2, aba1-6) (A); data are mean values ± SD from at least three independent experiments; results marked with asterisk on the top of the bar differ significantly at p = 0.05 from Col-0. Representative low-temperature (77 K) fluorescence emission spectra (excitation at 440 nm) of cotyledons and the upper 2 mm of hypocotyl of 5-day etiolated Col-0 and pif1 seedlings (B); all spectra were normalized to the maximal value. HPLC/UV chromatograms of total polyprenol extracts obtained from 5-day etiolated seedlings of Col-0 and cpt7 mutant (C); the main polyprenol (Pren-10) peak is indicated on the representative chromatograms.