Tocopherol content and enzymatic antioxidant activities in chloroplasts from NaCl-stressed tomato plants

Skłodowska, Maria; Gapińska, Magdalena; Gajewska, Ewa; Gabara, Barbara

doi:10.1007/s11738-008-0248-1

Cited by 34 publications

(16 citation statements)

References 51 publications

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“…Tocopherols protect them against photo-oxidation by quenching and scavenging ROS and alkyl peroxy radicals generated during photosynthesis [ 43 , 44 ]. The protective effects of VTE include not only singlet oxygen scavenging but also a general protection of thylakoid membranes by tocopherol molecules in the lipid phase [ 45 ]. Loyola et al [ 44 ] demonstrated that α-tocopherol biosynthesis is part of the adaptation mechanisms to drought stress of Solanum chilense , a wild tomato genotype.…”

Section: Factors Affecting Vitamin E Content In Tomato Fresh Fruitmentioning

confidence: 99%

Vitamin E Content and Composition in Tomato Fruits: Beneficial Roles and Bio-Fortification

Raiola

Tenore

Barone

et al. 2015

IJMS

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Several epidemiological studies have demonstrated that high vitamin E intakes are related to a reduced risk of non-communicable diseases, while other dietary antioxidants are not, suggesting that vitamin E exerts specific healthy functions in addition to its antioxidant role. In this regard, tomato (Solanum lycopersicum), one of the most consumed vegetables of the whole world population, is an important source of both tocopherols and tocotrienols. However, vitamin E content may strongly depend on several biotic and abiotic factors. In this review we will debate the elements affecting the synthesis of tocopherols and tocotrienols in tomato fruit, such as environmental conditions, genotype, fruit maturity level, and the impact of classical processing methods, such as pasteurization and lyophilization on the amount of these compounds. In addition we will analyze the specific vitamin E mechanisms of action in humans and the consequent functional effects derived from its dietary intake. Finally, we will examine the currently available molecular techniques used to increase the content of vitamin E in tomato fruit, starting from the identification of genetic determinants and quantitative trait loci that control the accumulation of these metabolites.

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Section: Factors Affecting Vitamin E Content In Tomato Fresh Fruitmentioning

confidence: 99%

Vitamin E Content and Composition in Tomato Fruits: Beneficial Roles and Bio-Fortification

Raiola

Tenore

Barone

et al. 2015

IJMS

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“…Superoxide dismutase activity is regarded as a kind of protective enzyme in the plant [32], and malondialdehyde is the product of cell membrane lipid peroxidation in plants [33]. Many studies have demonstrated that stresses, such as low temperature [31], low moisture [34] and high NaCl [35], could enhance the activity of superoxide dismutase activity to protect the cell from injury and death. Meanwhile, the malondialdehyde content of stressed plants was lower than those with no stress.…”

Section: Activity Of Superoxide Dismutase Activity and Content Of Malmentioning

confidence: 99%

Changes in some chemical components and in the physiology of rambutan fruit (Nephelium lappaceumL.) as affected by storage temperature and packing material

Shao¹,

Xie²,

Chen³

et al. 2012

Fruits

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Changes in some chemical components and in the physiology of rambutan fruit (Nephelium lappaceum L.) as affected by storage temperature and packing material. Abstract-Introduction. Rambutan (Nephelium lappaceum L.) is a kind of tropical fruit with high commercial value in international trade. However, harvested rambutan fruits suffer from a short shelf life and show rapid postharvest deterioration problems due to spintern browning and flesh decay. Materials and methods. Rambutan fruit (cv. 'Baoyan 5') were harvested in 2009 and 2010. Changes in some chemical components and the physiology of fruits were investigated at different storage temperatures (25°C and 10°C) and with different packing materials (regular low-density polyethylene and anti-moisture polyethylene bags). Results and discussion. Changes in the development of the browning index, and contents of total soluble solids, titratable acidity and vitamin C greatly decreased during low temperature storage (10°C); moreover, low temperature storage (10°C) could maintain a significantly higher level of superoxide dismutase activity and lower values of malondialdehyde and cell membrane permeability. The effects of packing material were different according to the different storage temperatures. At 10°C, the beneficial effects of antimoisture polyethylene bags on fruit quality and physiology were observed. However, at 25°C, fruit packed with regular low-density polyethylene proved to be of better quality than those packed with anti-moisture polyethylene bags. Conclusion. The overall results suggest that packing with anti-moisture polyethylene bags and storage at 10°C were the most suitable conditions to maintain quality and to extend the storage life of rambutan fruit. China / Nephelium lappaceum / fruits / storage / temperature / packing material / chemical composition / postharvest physiology Modifications de quelques composantes chimiques et de la physiologie des fruits de ramboutan (Nephelium lappaceum L.) en fonction de leur température de stockage et du matériel d'emballage. Résumé-Introduction. Le rambutan (Nephelium lappaceum L.) est une espèce tropicale qui présente une grande valeur économique dans le commerce international. Toutefois, après leur récolte, les fruits du ramboutan ont une courte durée de vie et ils se détériorent rapidement en raison du brunissement de leurs épines et de la détérioration de leur chair. Matériel et méthodes. Des fruits de rambutan (cv. 'Baoyan 5') ont été récoltés en 2009 et 2010. Les modifications de certaines composantes chimiques et les changements physiologiques de ces fruits ont été étudiés en fonction de la température de stockage (25°C et 10°C) et du matériel d'emballage utilisé (polyéthylène standard de basse densité et sac en polyéthylène anti-humidité). Résultats et discussion. La valeur de l'index de brunissement et les teneurs en solides solubles totaux, acidité titrable et vitamine C ont fortement diminué au cours du stockage à basse température (10°C) ; par ailleurs, le stockage à basse température (10°C) a p...

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“…In chloroplast of tomato plants subject to moderate and severe salt stress, tocopherols appear to act as antioxidants under moderate stress and in the early phases of severe stress. However upon the last phases of severe stress, it has been suggested to be involved in senescence processes 15 . Furthermore, it has been shown that α-tocopherol levels were much higher in the halophyte Cakile maritima than in the glycophyte A. thaliana upon salt stress.…”

Section: Introductionmentioning

confidence: 99%

Increased sensitivity to salt stress in tocopherol-deficient Arabidopsis mutants growing in a hydroponic system

Ellouzi

Hamed

Cela

et al. 2013

Plant Signaling & Behavior

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Recent studies suggest that tocopherols could play physiological roles in salt tolerance but the mechanisms are still unknown. In this study, we analyzed changes in growth, mineral and oxidative status in vte1 and vte4 Arabidopsis thaliana mutants exposed to salt stress. vte1 and vte4 mutants lack α-tocopherol, but only the vte1 mutant is additionally deficient in γ-tocopherol. Results showed that a deficiency in vitamin E leads to reduced growth and increased oxidative stress in hydroponically-grown plants. This effect was observed at early stages, not only in rosettes but also in roots. The vte1 mutant was more sensitive to salt-induced oxidative stress than the wild type and the vte4 mutant. Salt sensitivity was associated with (i) high contents of Na+, (ii) reduced efficiency of PSII photochemistry (Fv/Fm ratio) and (iii) more pronounced oxidative stress as indicated by increased hydrogen peroxide and malondialdeyde levels. The vte 4 mutant, which accumulates γ- instead of α-tocopherol showed an intermediate sensitivity to salt stress between the wild type and the vte1 mutant. Contents of abscisic acid, jasmonic acid and the ethylene precursor, 1-aminocyclopropane-1-carboxylic acid were higher in the vte1 mutant than the vte4 mutant and wild type. It is concluded that vitamin E-deficient plants show an increased sensitivity to salt stress both in rosettes and roots, therefore indicating the positive role of tocopherols in stress tolerance, not only by minimizing oxidative stress, but also controlling Na+/K+ homeostasis and hormonal balance.

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Tocopherol content and enzymatic antioxidant activities in chloroplasts from NaCl-stressed tomato plants

Cited by 34 publications

References 51 publications

Vitamin E Content and Composition in Tomato Fruits: Beneficial Roles and Bio-Fortification

Vitamin E Content and Composition in Tomato Fruits: Beneficial Roles and Bio-Fortification

Changes in some chemical components and in the physiology of rambutan fruit (Nephelium lappaceumL.) as affected by storage temperature and packing material

Increased sensitivity to salt stress in tocopherol-deficient Arabidopsis mutants growing in a hydroponic system

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