Salinity impairs photosynthetic capacity and enhances carotenoid-related gene expression and biosynthesis in tomato (Solanum lycopersicum L. cv. Micro-Tom)

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dc.contributor.authorLeiva-Ampuero, A.
dc.contributor.authorAgurto, M.
dc.contributor.authorMatus, J.
dc.contributor.authorHoppe, G.
dc.contributor.authorHuidobro, C.
dc.contributor.authorInostroza-Blancheteau, C.
dc.contributor.authorReyes-Diaz, M.
dc.contributor.authorStange, C.
dc.contributor.authorCanessa, P.
dc.contributor.authorVega, A.
dc.date.accessioned2021-08-12T15:35:30Z
dc.date.available2021-08-12T15:35:30Z
dc.date.issued2020
dc.descriptionIndexación: Scopuses
dc.description.abstractCarotenoids 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, _- 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.es
dc.description.urihttps://peerj.com/articles/9742/
dc.identifier.citationPeerJ, Volume 8, 2020, Article number e9742es
dc.identifier.doiDOI: 10.7717/peerj.9742
dc.identifier.issn2167-8359
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/19811
dc.language.isoenes
dc.publisherPeerJ Inc.es
dc.subjectAbiotic stresses
dc.subjectLycopenees
dc.subjectPhotosynthesises
dc.subjectSalt stresses
dc.subjectTomato fruitses
dc.subjectLycopene Cyclase-Isomerasees
dc.subjectPhytoene Synthasees
dc.subjectCarotenoidses
dc.titleSalinity impairs photosynthetic capacity and enhances carotenoid-related gene expression and biosynthesis in tomato (Solanum lycopersicum L. cv. Micro-Tom)es
dc.typeArtículoes
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