Salinity impairs photosynthetic capacity and enhances carotenoid-related gene expression and biosynthesis in tomato (Solanum lycopersicum L. cv. Micro-Tom)
Carotenoids are essential components of the photosynthetic antenna and reaction center complexes, being also responsible for antioxidant defense, coloration, and many other functions in multiple plant tissues. In tomato, salinity negatively affects the development of vegetative organs and productivi...
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doaj-bf5602ff85054c699923556fa06827c22020-11-25T03:33:12ZengPeerJ Inc.PeerJ2167-83592020-09-018e974210.7717/peerj.9742Salinity impairs photosynthetic capacity and enhances carotenoid-related gene expression and biosynthesis in tomato (Solanum lycopersicum L. cv. Micro-Tom)Andrés Leiva-Ampuero0Mario Agurto1José Tomás Matus2Gustavo Hoppe3Camila Huidobro4Claudio Inostroza-Blancheteau5Marjorie Reyes-Díaz6Claudia Stange7Paulo Canessa8Andrea Vega9Millennium Institute for Integrative Biology (iBio), Santiago, ChileMillennium Institute for Integrative Biology (iBio), Santiago, ChileInstitute for Integrative Systems Biology, I2SysBio, Universitat de València - CSIC, Valencia, SpainMillennium Institute for Integrative Biology (iBio), Santiago, ChileMillennium Institute for Integrative Biology (iBio), Santiago, ChileNúcleo de Investigación en Producción Alimentaria (NIPA), Departamento de Ciencias Agropecuarias y Acuícolas, Facultad de Recursos Naturales, Universidad Católica de Temuco, Temuco, ChileDepartamento de Ciencias Químicas y Recursos Naturales, Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Temuco, ChileCentro de Biología Molecular Vegetal (CBMV), Departamento de Biología, Facultad de Ciencias, Universidad de Chile, Santiago, ChileMillennium Institute for Integrative Biology (iBio), Santiago, ChileMillennium Institute for Integrative Biology (iBio), Santiago, ChileCarotenoids are essential components of the photosynthetic antenna and reaction center complexes, being also responsible for antioxidant defense, coloration, and many other functions in multiple plant tissues. In tomato, salinity negatively affects the development of vegetative organs and productivity, but according to previous studies it might also increase fruit color and taste, improving its quality, which is a current agricultural challenge. The fruit quality parameters that are increased by salinity are cultivar-specific and include carotenoid, sugar, and organic acid contents. However, the relationship between vegetative and reproductive organs and response to salinity is still poorly understood. Considering this, Solanum lycopersicum cv. Micro-Tom plants were grown in the absence of salt supplementation as well as with increasing concentrations of NaCl for 14 weeks, evaluating plant performance from vegetative to reproductive stages. In response to salinity, plants showed a significant reduction in net photosynthesis, stomatal conductance, PSII quantum yield, and electron transport rate, in addition to an increase in non-photochemical quenching. In line with these responses the number of tomato clusters decreased, and smaller fruits with higher soluble solids content were obtained. Mature-green fruits also displayed a salt-dependent higher induction in the expression of PSY1, PDS, ZDS, and LYCB, key genes of the carotenoid biosynthesis pathway, in correlation with increased lycopene, lutein, β-carotene, and violaxanthin levels. These results suggest a key relationship between photosynthetic plant response and yield, involving impaired photosynthetic capacity, increased carotenoid-related gene expression, and carotenoid biosynthesis.https://peerj.com/articles/9742.pdfAbiotic stressPhotosynthesisSalt stressTomato fruitsLycopene |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Andrés Leiva-Ampuero Mario Agurto José Tomás Matus Gustavo Hoppe Camila Huidobro Claudio Inostroza-Blancheteau Marjorie Reyes-Díaz Claudia Stange Paulo Canessa Andrea Vega |
spellingShingle |
Andrés Leiva-Ampuero Mario Agurto José Tomás Matus Gustavo Hoppe Camila Huidobro Claudio Inostroza-Blancheteau Marjorie Reyes-Díaz Claudia Stange Paulo Canessa Andrea Vega Salinity impairs photosynthetic capacity and enhances carotenoid-related gene expression and biosynthesis in tomato (Solanum lycopersicum L. cv. Micro-Tom) PeerJ Abiotic stress Photosynthesis Salt stress Tomato fruits Lycopene |
author_facet |
Andrés Leiva-Ampuero Mario Agurto José Tomás Matus Gustavo Hoppe Camila Huidobro Claudio Inostroza-Blancheteau Marjorie Reyes-Díaz Claudia Stange Paulo Canessa Andrea Vega |
author_sort |
Andrés Leiva-Ampuero |
title |
Salinity impairs photosynthetic capacity and enhances carotenoid-related gene expression and biosynthesis in tomato (Solanum lycopersicum L. cv. Micro-Tom) |
title_short |
Salinity impairs photosynthetic capacity and enhances carotenoid-related gene expression and biosynthesis in tomato (Solanum lycopersicum L. cv. Micro-Tom) |
title_full |
Salinity impairs photosynthetic capacity and enhances carotenoid-related gene expression and biosynthesis in tomato (Solanum lycopersicum L. cv. Micro-Tom) |
title_fullStr |
Salinity impairs photosynthetic capacity and enhances carotenoid-related gene expression and biosynthesis in tomato (Solanum lycopersicum L. cv. Micro-Tom) |
title_full_unstemmed |
Salinity impairs photosynthetic capacity and enhances carotenoid-related gene expression and biosynthesis in tomato (Solanum lycopersicum L. cv. Micro-Tom) |
title_sort |
salinity impairs photosynthetic capacity and enhances carotenoid-related gene expression and biosynthesis in tomato (solanum lycopersicum l. cv. micro-tom) |
publisher |
PeerJ Inc. |
series |
PeerJ |
issn |
2167-8359 |
publishDate |
2020-09-01 |
description |
Carotenoids are essential components of the photosynthetic antenna and reaction center complexes, being also responsible for antioxidant defense, coloration, and many other functions in multiple plant tissues. In tomato, salinity negatively affects the development of vegetative organs and productivity, but according to previous studies it might also increase fruit color and taste, improving its quality, which is a current agricultural challenge. The fruit quality parameters that are increased by salinity are cultivar-specific and include carotenoid, sugar, and organic acid contents. However, the relationship between vegetative and reproductive organs and response to salinity is still poorly understood. Considering this, Solanum lycopersicum cv. Micro-Tom plants were grown in the absence of salt supplementation as well as with increasing concentrations of NaCl for 14 weeks, evaluating plant performance from vegetative to reproductive stages. In response to salinity, plants showed a significant reduction in net photosynthesis, stomatal conductance, PSII quantum yield, and electron transport rate, in addition to an increase in non-photochemical quenching. In line with these responses the number of tomato clusters decreased, and smaller fruits with higher soluble solids content were obtained. Mature-green fruits also displayed a salt-dependent higher induction in the expression of PSY1, PDS, ZDS, and LYCB, key genes of the carotenoid biosynthesis pathway, in correlation with increased lycopene, lutein, β-carotene, and violaxanthin levels. These results suggest a key relationship between photosynthetic plant response and yield, involving impaired photosynthetic capacity, increased carotenoid-related gene expression, and carotenoid biosynthesis. |
topic |
Abiotic stress Photosynthesis Salt stress Tomato fruits Lycopene |
url |
https://peerj.com/articles/9742.pdf |
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