Browsing by Author "Vega C., Andrea"
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- ItemA molecular framework for the inhibition of Arabidopsis root growth in response to boron toxicity(2012) Aquea Zeballos, José Felipe; Vega C., Andrea; Jullian Fabres, Pastor; Arce Johnson, Jorge Patricio
- ItemEffect of saline irrigation on the carotenoids biosynthesis and fruit development of Solanum lycopersicum cv. Micro Tom.(2019) Leiva Ampuero, Andrés; Vega C., Andrea; Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalSalinity is an environmental factor that limits plants growth and crop productivity, affecting biochemical and physiological mechanisms, as well as morphology in diverse plants. Decreasing in the photosynthetic capacity triggers important changes in plant development. It has been described that saline stress induce lipids, proteins and nucleic acids oxidative damage. To survive to these negative conditions, plants synthesize antioxidant molecules and detoxifying enzymes, in order to protect plant tissues against propagation of oxidative and cytotoxics species. In this context, Lycopene and ß-carotene have been correlated with antioxidant activities in several fruits. In a plant with moderate tolerance to salinity, such as tomato, high levels of NaCl decrease fruit size, number of leaves and stomatal density, reduce crop yield and negatively affect the carotenoids concentration. Interestingly, tomato plants exposed to low salinity significantly modifies the photosynthetic capacity, enhances carotenoid fruit accumulation and could improve tomato taste by increasing sugar and organic acids content. In this work, the effect of saline irrigation on the carotenoids biosynthesis and fruit development of Solanum lycopersicum cv. Micro Tom was studied. The results showed that after 8 weeks of irrigation with a 80mM to 160mM NaCl solutions negatively modified photosynthetic capacity, in terms of net photosynthesis, stomatic conductivity, photochemical efficiency, electron transport rate and non photochemical quenching. Also, after 14 weeks of a 40 to 160 mM salinity treatments, tomato fruits showed an early coloration, increasing the solid soluble content in comparison with the control. However, a reduction in fruit caliber and fresh weight was observed from 80 mM NaCl onwards. Finally, salinity treatments differentially changed expression of carotenoid biosynthetic genes and increased accumulation of several carotenoids under 120 to 160mM. Altogether, these results suggest that long term salt irrigation correlates with earliness in tomato, a major breeding characteristic in crop plants.Salinity is an environmental factor that limits plants growth and crop productivity, affecting biochemical and physiological mechanisms, as well as morphology in diverse plants. Decreasing in the photosynthetic capacity triggers important changes in plant development. It has been described that saline stress induce lipids, proteins and nucleic acids oxidative damage. To survive to these negative conditions, plants synthesize antioxidant molecules and detoxifying enzymes, in order to protect plant tissues against propagation of oxidative and cytotoxics species. In this context, Lycopene and ß-carotene have been correlated with antioxidant activities in several fruits. In a plant with moderate tolerance to salinity, such as tomato, high levels of NaCl decrease fruit size, number of leaves and stomatal density, reduce crop yield and negatively affect the carotenoids concentration. Interestingly, tomato plants exposed to low salinity significantly modifies the photosynthetic capacity, enhances carotenoid fruit accumulation and could improve tomato taste by increasing sugar and organic acids content. In this work, the effect of saline irrigation on the carotenoids biosynthesis and fruit development of Solanum lycopersicum cv. Micro Tom was studied. The results showed that after 8 weeks of irrigation with a 80mM to 160mM NaCl solutions negatively modified photosynthetic capacity, in terms of net photosynthesis, stomatic conductivity, photochemical efficiency, electron transport rate and non photochemical quenching. Also, after 14 weeks of a 40 to 160 mM salinity treatments, tomato fruits showed an early coloration, increasing the solid soluble content in comparison with the control. However, a reduction in fruit caliber and fresh weight was observed from 80 mM NaCl onwards. Finally, salinity treatments differentially changed expression of carotenoid biosynthetic genes and increased accumulation of several carotenoids under 120 to 160mM. Altogether, these results suggest that long term salt irrigation correlates with earliness in tomato, a major breeding characteristic in crop plants.Salinity is an environmental factor that limits plants growth and crop productivity, affecting biochemical and physiological mechanisms, as well as morphology in diverse plants. Decreasing in the photosynthetic capacity triggers important changes in plant development. It has been described that saline stress induce lipids, proteins and nucleic acids oxidative damage. To survive to these negative conditions, plants synthesize antioxidant molecules and detoxifying enzymes, in order to protect plant tissues against propagation of oxidative and cytotoxics species. In this context, Lycopene and ß-carotene have been correlated with antioxidant activities in several fruits. In a plant with moderate tolerance to salinity, such as tomato, high levels of NaCl decrease fruit size, number of leaves and stomatal density, reduce crop yield and negatively affect the carotenoids concentration. Interestingly, tomato plants exposed to low salinity significantly modifies the photosynthetic capacity, enhances carotenoid fruit accumulation and could improve tomato taste by increasing sugar and organic acids content. In this work, the effect of saline irrigation on the carotenoids biosynthesis and fruit development of Solanum lycopersicum cv. Micro Tom was studied. The results showed that after 8 weeks of irrigation with a 80mM to 160mM NaCl solutions negatively modified photosynthetic capacity, in terms of net photosynthesis, stomatic conductivity, photochemical efficiency, electron transport rate and non photochemical quenching. Also, after 14 weeks of a 40 to 160 mM salinity treatments, tomato fruits showed an early coloration, increasing the solid soluble content in comparison with the control. However, a reduction in fruit caliber and fresh weight was observed from 80 mM NaCl onwards. Finally, salinity treatments differentially changed expression of carotenoid biosynthetic genes and increased accumulation of several carotenoids under 120 to 160mM. Altogether, these results suggest that long term salt irrigation correlates with earliness in tomato, a major breeding characteristic in crop plants.Salinity is an environmental factor that limits plants growth and crop productivity, affecting biochemical and physiological mechanisms, as well as morphology in diverse plants. Decreasing in the photosynthetic capacity triggers important changes in plant development. It has been described that saline stress induce lipids, proteins and nucleic acids oxidative damage. To survive to these negative conditions, plants synthesize antioxidant molecules and detoxifying enzymes, in order to protect plant tissues against propagation of oxidative and cytotoxics species. In this context, Lycopene and ß-carotene have been correlated with antioxidant activities in several fruits. In a plant with moderate tolerance to salinity, such as tomato, high levels of NaCl decrease fruit size, number of leaves and stomatal density, reduce crop yield and negatively affect the carotenoids concentration. Interestingly, tomato plants exposed to low salinity significantly modifies the photosynthetic capacity, enhances carotenoid fruit accumulation and could improve tomato taste by increasing sugar and organic acids content. In this work, the effect of saline irrigation on the carotenoids biosynthesis and fruit development of Solanum lycopersicum cv. Micro Tom was studied. The results showed that after 8 weeks of irrigation with a 80mM to 160mM NaCl solutions negatively modified photosynthetic capacity, in terms of net photosynthesis, stomatic conductivity, photochemical efficiency, electron transport rate and non photochemical quenching. Also, after 14 weeks of a 40 to 160 mM salinity treatments, tomato fruits showed an early coloration, increasing the solid soluble content in comparison with the control. However, a reduction in fruit caliber and fresh weight was observed from 80 mM NaCl onwards. Finally, salinity treatments differentially changed expression of carotenoid biosynthetic genes and increased accumulation of several carotenoids under 120 to 160mM. Altogether, these results suggest that long term salt irrigation correlates with earliness in tomato, a major breeding characteristic in crop plants.Salinity is an environmental factor that limits plants growth and crop productivity, affecting biochemical and physiological mechanisms, as well as morphology in diverse plants. Decreasing in the photosynthetic capacity triggers important changes in plant development. It has been described that saline stress induce lipids, proteins and nucleic acids oxidative damage. To survive to these negative conditions, plants synthesize antioxidant molecules and detoxifying enzymes, in order to protect plant tissues against propagation of oxidative and cytotoxics species. In this context, Lycopene and ß-carotene have been correlated with antioxidant activities in several fruits. In a plant with moderate tolerance to salinity, such as tomato, high levels of NaCl decrease fruit size, number of leaves and stomatal density, reduce crop yield and negatively affect the carotenoids concentration. Interestingly, tomato plants exposed to low salinity significantly modifies the photosynthetic capacity, enhances carotenoid fruit accumulation and could improve tomato taste by increasing sugar and organic acids content. In this work, the effect of saline irrigation on the carotenoids biosynthesis and fruit development of Solanum lycopersicum cv. Micro Tom was studied. The results showed that after 8 weeks of irrigation with a 80mM to 160mM NaCl solutions negatively modified photosynthetic capacity, in terms of net photosynthesis, stomatic conductivity, photochemical efficiency, electron transport rate and non photochemical quenching. Also, after 14 weeks of a 40 to 160 mM salinity treatments, tomato fruits showed an early coloration, increasing the solid soluble content in comparison with the control. However, a reduction in fruit caliber and fresh weight was observed from 80 mM NaCl onwards. Finally, salinity treatments differentially changed expression of carotenoid biosynthetic genes and increased accumulation of several carotenoids under 120 to 160mM. Altogether, these results suggest that long term salt irrigation correlates with earliness in tomato, a major breeding characteristic in crop plants.
- ItemEffects of the Plant Growth-Promoting Bacterium Burkholderia phytofirmans PsJN throughout the Life Cycle of Arabidopsis thaliana(2013) Poupin Swinburn, María Josefina; Timmermann, Tania; Vega C., Andrea; Zuñiga, Ana; González, Bernardo
- ItemGene networks underlying the early regulation of Paraburkholderia phytofirmans PsJN induced systemic resistance in Arabidopsis(2019) Timmermann, T.; Poupin Swinburn, María Josefina; Vega C., Andrea; Urrutia, C.; Ruz, G.A.; Gonzalez, B.
- ItemGenome-wide analysis of the SET DOMAIN GROUP family in Grapevine(2011) Aquea Zeballos, José Felipe; Vega C., Andrea; Arce Johnson, Jorge Patricio
- ItemInduction of PrMADS10 on the lower side of bent pine tree stems : potential role in modifying plant cell wall properties and wood anatomy(2019) Cruz, N.; Mendez, T.; Ramos, P.; Urbina, D.; Vega C., Andrea; Gutiérrez Ilabaca, Rodrigo Antonio; Moya-Leon, M.A.; Herrera, R.
- ItemInspection of the Grapevine BURP Superfamily Highlights an Expansion of RD22 Genes with Distinctive Expression Features in Berry Development and ABA-Mediated Stress Responses(2014) Matus, J.; Aquea Zeballos, José Felipe; Espinoza, C.; Vega C., Andrea; Cavallini, E.; Canon Rodriguez, H.; Serrano, J.; Battista Tornielli, G.; Arce Johnson, Jorge Patricio; Dal Santo, S.
- ItemSalinity impairs photosynthetic capacity and enhances carotenoid-related gene expression and biosynthesis in tomato (Solanum lycopersicum L. cv. Micro-Tom)(2020) Leiva Ampuero, Andrés; Agurto, M.; Matus, J. T.; Hoppe, G.; Huidobro Marín, Camila; Inostroza-Blancheteau, C.; Reyes-Díaz, M.; Stange, C.; Canessa, P; Vega C., Andrea