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首页> 外文期刊>Acta Horticulturae >Variation in Tomato Fruit Ascorbate Levels and Consequences of Manipulation of Ascorbate Metabolism on Drought Stress Tolerance
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Variation in Tomato Fruit Ascorbate Levels and Consequences of Manipulation of Ascorbate Metabolism on Drought Stress Tolerance

机译:番茄果实抗坏血酸水平的变化以及抗坏血酸代谢对干旱胁迫耐受性的影响

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Tomato is an important crop worldwide and one of the major sources of vitamin C (ascorbate) in the human diet. Ascorbate contributes both to tomato nutritional quality and has roles in stress tolerance and adaptation to the environment. In this studywe show the variability that exists in tomato germplasm in terms of ascorbate content (10 to 90 mg/100 g fwt) which could be starting point for evaluating correlations with physiological traits potentially linked to ascorbate. We have then manipulated genes involved in ascorbate metabolism, using RNA interference, to investigate their influence on fruit ascorbate levels, fruit physiology and yield under both normal and drought stress conditions. There is some evidence that one of the genes chosen affects fruit size and yield under different conditions, but clear effects on the fruit ascorbate pool are not seen. We conclude that ascorbate metabolism is complex and can also have wider effects on fruit physiology and growth.
机译:番茄是全球重要的农作物,也是人类饮食中维生素C(抗坏血酸)的主要来源之一。抗坏血酸有助于提高番茄的营养品质,并在胁迫耐受性和对环境的适应性方面发挥作用。在这项研究中,我们显示了番茄种质中抗坏血酸含量(10至90 mg / 100 g fwt)的变异性,这可能是评估与潜在与抗坏血酸相关的生理特性相关性的起点。然后,我们使用RNA干扰对涉及抗坏血酸代谢的基因进行了操纵,以研究它们在正常和干旱胁迫条件下对水果抗坏血酸水平,水果生理和产量的影响。有证据表明,所选择的基因之一在不同条件下会影响果实的大小和产量,但未见对果实抗坏血酸库的明显影响。我们得出的结论是,抗坏血酸的代谢是复杂的,并且还可能对果实的生理和生长产生更广泛的影响。

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