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; Lo Piccolo E; Pellegrini E; Bellini E; Giordani T; Guidi L; Lorenzini G; Malorgio F; Massai R; Nali C; Paoli L; Remorini D; Sanità di Toppi L; Vernieri P; Landi M.. - In: PHOTOSYNTHETICA. - ISSN 1573-9058. - ELETTRONICO. - 59:(2021), pp. 557-569. [10.32615/ps.2021.048]

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

Lo Piccolo E;
2021

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
59
557
569
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; Sanità di Toppi L; Vernieri P; Landi M.
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1296153
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