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首页> 外文期刊>Journal of Agricultural and Food Chemistry >Thermal Stress in Melon Plants: Phytoprostanes and Phytofurans as Oxidative Stress Biomarkers and the Effect of Antioxidant Supplementation
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Thermal Stress in Melon Plants: Phytoprostanes and Phytofurans as Oxidative Stress Biomarkers and the Effect of Antioxidant Supplementation

机译:甜瓜植物的热胁迫:植物前列腺素和植物呋喃作为氧化胁迫的生物标志物和抗氧化剂的补充

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摘要

The extreme temperatures generated in the melon crop, early harvest, induce an increase in reactive oxygen species (ROS) plant levels leading to oxidative stress. Phytoprostanes (PhytoPs) and phytofurans (PhytoFs) are plant metabolites derived from alpha-linolenic acid oxidation induced by ROS. The aims of this work were to evaluate PhytoPs and PhytoFs as oxidative stress biomarkers in leaves of melon plants thermally stressed. In addition, to fortify melon plant antioxidant defenses, foliar spraying was assayed using salicylic and gallic acid solutions and Ilex paraguariensis extract. PhytoP and PhytoF concentration ranges were 109-1146 and 130-4400 ng/g, respectively. Their levels in stressed plants were significantly higher than in nonstressed samples. In stressed samples treated with I. paraguariensis, PhytoP and PhytoF levels were significantly lower than in stressed samples without antioxidants. PhytoPs and PhytoFs represent relevant oxidative stress biomarkers in melon leaves. The use of natural antioxidants could reduce plant oxidative stress.
机译:甜瓜作物早期收获时产生的极端温度导致活性氧(ROS)植物水平升高,导致氧化胁迫。植物前列腺素(PhytoPs)和植物呋喃(PhytoFs)是源自ROS诱导的α-亚麻酸氧化的植物代谢产物。这项工作的目的是评估PhytoPs和PhytoFs作为热胁迫瓜类植物叶片中的氧化应激生物标记。此外,为了增强瓜类植物的抗氧化防御能力,使用水杨酸和没食子酸溶液以及巴拉圭冬青提取物对叶面喷雾进行了测定。 PhytoP和PhytoF的浓度范围分别为109-1146和130-4400 ng / g。在胁迫植物中它们的水平显着高于未胁迫样品。在用巴拉圭鸢尾处理的压力样品中,PhytoP和PhytoF的水平显着低于没有抗氧化剂的压力样品。 PhytoP和PhytoF代表瓜叶中相关的氧化应激生物标记。使用天然抗氧化剂可以减少植物的氧化胁迫。

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