دورية أكاديمية
Salinity impairs photosynthetic capacity and enhances carotenoid-related gene expression and biosynthesis in tomato (Solanum lycopersicum L. cv. Micro-Tom)
| العنوان: | Salinity impairs photosynthetic capacity and enhances carotenoid-related gene expression and biosynthesis in tomato (Solanum lycopersicum L. cv. Micro-Tom) |
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| المؤلفون: | Leiva Ampuero, Andrés, Agurto, Mario, Matus, José Tomás, Hoppe, Gustavo, Huidobro, Camila, Inostroza Blancheteau, Claudio, Reyes Díaz, Marjorie, Stange, Claudia, Canessa, Paulo, Vega, Andrea |
| المصدر: | PEERJ |
| بيانات النشر: | PEERJ |
| سنة النشر: | 2020 |
| المجموعة: | Universidad de Chile: Repositorio académico |
| مصطلحات موضوعية: | Abiotic stress, Photosynthesis, Salt stress, Tomato fruits, Lycopene |
| الوصف: | 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, ficarotene, 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. ; Instituto Milenio iBio-Iniciativa Cientifica Milenio MINECON, ANID/FONDECYT 1171631 1180747 Ramon y Cajal program grant from the Ministerio de Ciencia, Innovacion y Universidades (MCIU, Spain) RYC-2017-23645 Agencia Estatal de Investigacion (AEI, Spain) European Union (EU) ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| العلاقة: | PEERJ Volumen: 8 Número de artículo: e9742 Sep 17 2020; https://repositorio.uchile.cl/handle/2250/178446Test |
| DOI: | 10.7717/peerj.9742 |
| الإتاحة: | https://doi.org/10.7717/peerj.9742Test https://repositorio.uchile.cl/handle/2250/178446Test |
| حقوق: | Attribution-NonCommercial-NoDerivs 3.0 Chile ; http://creativecommons.org/licenses/by-nc-nd/3.0/clTest/ |
| رقم الانضمام: | edsbas.C51BCDF2 |
| قاعدة البيانات: | BASE |
| DOI: | 10.7717/peerj.9742 |
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