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Manipulating the antioxidant capacity of halophytes to increase their cultural and economic value through saline cultivation

机译:通过盐水培养来控制盐生植物的抗氧化能力,以提高其文化和经济价值

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Halophytes, salt-tolerant plants, are a source of valuable secondary metabolites with potential economic value. The steady-state pools of many stress-related metabolites are already enhanced in halophytes when compared with glycophytes, but growth under conditions away from the optimum can induce stress and consequently result in changes to secondary metabolites such as antioxidants. However, direct evidence for increasing the concentration of valuable secondary metabolites as a consequence of altering the salinity of the growing environment still remains equivocal. To address this, we analysed a range of metabolites with antioxidant capacity (including total phenols, flavonoids, ascorbate, reduced/oxidized glutathione and reactive oxygen species scavenging enzymes) in seedlings and plants from different families (Amaranthaceae, Brassicaceae, Plantaginaceae and Rhizophoraceae) and habitats grown under different salt concentrations. We show that it is possible to manipulate the antioxidant capacity of plants and seedlings by altering the saline growing environment, the length of time under saline cultivation and the developmental stage. Among the species studied, the halophytes Tripolium pannonicum, Plantago coronopus, Lepidium latifolium and Salicornia europaea demonstrated the most potential as functional foods or nutraceuticals.
机译:盐生植物是耐盐植物,是具有潜在经济价值的有价值的次级代谢产物的来源。与糖类植物相比,盐生植物中许多与压力相关的代谢物的稳态库已经增强,但是在远离最佳条件的条件下生长会诱发压力,因此导致次生代谢物(例如抗氧化剂)的变化。然而,由于改变生长环境的盐度而增加有价值的次生代谢物浓度的直接证据仍然不明确。为了解决这个问题,我们分析了不同科(A菜科,十字花科,车前草科和根瘤菌科)的幼苗和植物中一系列具有抗氧化能力的代谢产物(包括总酚,类黄酮,抗坏血酸,还原/氧化的谷胱甘肽和活性氧清除酶),以及在不同盐浓度下生长的生境。我们表明,通过改变食盐的生长环境,食盐培养的时间长度和发育阶段,可以控制植物和幼苗的抗氧化能力。在所研究的物种中,盐生植物Tripolium pannonicum,车前草(Plantaago coronopus),小叶草(Lepidium latifolium)和欧洲Salicornia europaea被证明是功能食品或保健食品的最大潜力。

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