Variability in chlorophyll fluorescence spectra of eggplant fruit grown under different light environments: A case study

The main goal of the present work was to clarify physiological strategies in plants whose chloroplasts were developed under different light environments. The specific objective was to elucidate the influence of the spectral distribution of light on the chlorophyll fluorescence ratio and on photosynt...

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Autor principal: Lagorio, María Gabriela
Publicado: 2017
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1474905X_v16_n5_p711_OspinaCalvo
http://hdl.handle.net/20.500.12110/paper_1474905X_v16_n5_p711_OspinaCalvo
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paper:paper_1474905X_v16_n5_p711_OspinaCalvo2023-06-08T16:17:42Z Variability in chlorophyll fluorescence spectra of eggplant fruit grown under different light environments: A case study Lagorio, María Gabriela The main goal of the present work was to clarify physiological strategies in plants whose chloroplasts were developed under different light environments. The specific objective was to elucidate the influence of the spectral distribution of light on the chlorophyll fluorescence ratio and on photosynthetic parameters. To achieve this purpose, three species of eggplant fruit (black, purple and white striped and white) were used as a case study and their chlorophyll fluorescence was analyzed in detail. Spectra of the non-variable fluorescence in each part of the fruit were corrected for distortions by light reabsorption processes using a physical model. The main conclusion of this work was that the corrected fluorescence ratio was dependent on the contribution of each photosystem to the fluorescence and consequently on the environmental lighting conditions, becoming higher when illumination was rich in long wavelengths. Variable chlorophyll fluorescence, similar to that observed from plant leaves, was detected for the pulp of the black eggplant, for the pulp of the purple and white striped eggplant and for the intact fruit of the black eggplant. The maximum quantum efficiency of photosystem II in the light-adapted state (F′v/F′m), the quantum efficiency of photosystem II (ΦPSII), and the photochemical and non-photochemical quenching coefficients (qP and qNP/NPQ respectively) were determined in each case. The results could be explained very interestingly, in relation with the proportion of exciting light reaching each photosystem (I and II). The photochemical parameters obtained from variable chlorophyll fluorescence, allowed us to monitor non-destructively the physiological state of the black fruit during storage under both chilled or room-temperature conditions. © The Royal Society of Chemistry and Owner Societies 2017. Fil:Lagorio, M.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1474905X_v16_n5_p711_OspinaCalvo http://hdl.handle.net/20.500.12110/paper_1474905X_v16_n5_p711_OspinaCalvo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description The main goal of the present work was to clarify physiological strategies in plants whose chloroplasts were developed under different light environments. The specific objective was to elucidate the influence of the spectral distribution of light on the chlorophyll fluorescence ratio and on photosynthetic parameters. To achieve this purpose, three species of eggplant fruit (black, purple and white striped and white) were used as a case study and their chlorophyll fluorescence was analyzed in detail. Spectra of the non-variable fluorescence in each part of the fruit were corrected for distortions by light reabsorption processes using a physical model. The main conclusion of this work was that the corrected fluorescence ratio was dependent on the contribution of each photosystem to the fluorescence and consequently on the environmental lighting conditions, becoming higher when illumination was rich in long wavelengths. Variable chlorophyll fluorescence, similar to that observed from plant leaves, was detected for the pulp of the black eggplant, for the pulp of the purple and white striped eggplant and for the intact fruit of the black eggplant. The maximum quantum efficiency of photosystem II in the light-adapted state (F′v/F′m), the quantum efficiency of photosystem II (ΦPSII), and the photochemical and non-photochemical quenching coefficients (qP and qNP/NPQ respectively) were determined in each case. The results could be explained very interestingly, in relation with the proportion of exciting light reaching each photosystem (I and II). The photochemical parameters obtained from variable chlorophyll fluorescence, allowed us to monitor non-destructively the physiological state of the black fruit during storage under both chilled or room-temperature conditions. © The Royal Society of Chemistry and Owner Societies 2017.
author Lagorio, María Gabriela
spellingShingle Lagorio, María Gabriela
Variability in chlorophyll fluorescence spectra of eggplant fruit grown under different light environments: A case study
author_facet Lagorio, María Gabriela
author_sort Lagorio, María Gabriela
title Variability in chlorophyll fluorescence spectra of eggplant fruit grown under different light environments: A case study
title_short Variability in chlorophyll fluorescence spectra of eggplant fruit grown under different light environments: A case study
title_full Variability in chlorophyll fluorescence spectra of eggplant fruit grown under different light environments: A case study
title_fullStr Variability in chlorophyll fluorescence spectra of eggplant fruit grown under different light environments: A case study
title_full_unstemmed Variability in chlorophyll fluorescence spectra of eggplant fruit grown under different light environments: A case study
title_sort variability in chlorophyll fluorescence spectra of eggplant fruit grown under different light environments: a case study
publishDate 2017
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1474905X_v16_n5_p711_OspinaCalvo
http://hdl.handle.net/20.500.12110/paper_1474905X_v16_n5_p711_OspinaCalvo
work_keys_str_mv AT lagoriomariagabriela variabilityinchlorophyllfluorescencespectraofeggplantfruitgrownunderdifferentlightenvironmentsacasestudy
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