Selected light wavebands promote plant development and/or the biosynthesis of targeted metabolites. This work offers new insights on the effects of red (R), green (G), blue (B), and white (W – R:G:B; 1:1:1) LED light supplementation on physiochemical traits of strawberry leaves. Gas exchange and chlorophyll fluorescence parameters, photosynthetic pigments, and superoxide anion (•O2–) content were analysed in plants grown for 1 (T1) and 17 (T17) d with light supplementations. At T1, light supplementations resulted in the enhancement of the de-epoxidation state of xanthophylls and nonphotochemical quenching, but no changes were observed in maximal photosynthetic rate (PNmax), irrespective of light spectra. At T17, xanthophyll contents remained higher only in R-supplemented plants. Overall, W light resulted in higher photosynthesis, whilst R and B light depressed PNmax values and promoted•O2 – formation at T17. G light did not induce variations in photosynthetic traits nor induced oxidative stress at both T1 and T17.

Photosynthetic traits and biochemical responses in strawberry (Fragaria × ananassa duch.) leaves supplemented with led lights

Lauria G.
Primo
;
Pellegrini E.;Giordani T.;Guidi L.
;
Lorenzini G.;Malorgio F.;Massai R.;Nali C.;Paoli L.;Remorini D.;Sanita' Di Toppi L.;Vernieri P.;Landi M.
Ultimo
2021-01-01

Abstract

Selected light wavebands promote plant development and/or the biosynthesis of targeted metabolites. This work offers new insights on the effects of red (R), green (G), blue (B), and white (W – R:G:B; 1:1:1) LED light supplementation on physiochemical traits of strawberry leaves. Gas exchange and chlorophyll fluorescence parameters, photosynthetic pigments, and superoxide anion (•O2–) content were analysed in plants grown for 1 (T1) and 17 (T17) d with light supplementations. At T1, light supplementations resulted in the enhancement of the de-epoxidation state of xanthophylls and nonphotochemical quenching, but no changes were observed in maximal photosynthetic rate (PNmax), irrespective of light spectra. At T17, xanthophyll contents remained higher only in R-supplemented plants. Overall, W light resulted in higher photosynthesis, whilst R and B light depressed PNmax values and promoted•O2 – formation at T17. G light did not induce variations in photosynthetic traits nor induced oxidative stress at both T1 and T17.
2021
Lauria, G.; Lo Piccolo, E.; Pellegrini, E.; Bellini, E.; Giordani, T.; Guidi, L.; Lorenzini, G.; Malorgio, F.; Massai, R.; Nali, C.; Paoli, L.; Remorini, D.; Sanita' Di Toppi, L.; Vernieri, P.; Landi, M.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/1117586
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