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首页> 外文期刊>Saudi Journal of Biological Sciences >Foliar application of ascorbic acid enhances salinity stress tolerance in barley (Hordeum vulgare L.) through modulation of morpho-physio-biochemical attributes, ions uptake, osmo-protectants and stress response genes expression
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Foliar application of ascorbic acid enhances salinity stress tolerance in barley (Hordeum vulgare L.) through modulation of morpho-physio-biochemical attributes, ions uptake, osmo-protectants and stress response genes expression

机译：裂缝施用抗坏血酸在大麦（Hordeum Vulgare L.）中提高了盐度胁迫耐受性，通过调节Morpho-physio-Biochemical属性，离子摄取，渗透压保护剂和应激反应基因表达

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Barley ( Hordeum vulgare L.) is a major cereal grain and is known as a halophyte (a halophyte is a salt-tolerant plant that grows in soil or waters of high salinity). We therefore conducted a pot experiment to explore plant growth and biomass, photosynthetic pigments, gas exchange attributes, stomatal properties, oxidative stress and antioxidant response and their associated gene expression and absorption of ions in H. Vulgare . The soil used for this analysis was artificially spiked at different salinity concentrations (0, 50, 100 and 150?mM) and different levels of ascorbic acid (AsA) were supplied to plants (0, 30 and 60?mM) shortly after germination of the seed. The results of the present study showed that plant growth and biomass, photosynthetic pigments, gas exchange parameters, stomatal properties and ion uptake were significantly ( p ?0.05) reduced by salinity stress, whereas oxidative stress was induced in plants by generating the concentration of reactive oxygen species (ROS) in plant cells/tissues compared to plants grown in the control treatment. Initially, the activity of antioxidant enzymes and relative gene expression increased to a saline level of 100?mM, and then decreased significantly ( P ?0.05) by increasing the saline level (150?mM) in the soil compared to plants grown at 0?mM of salinity. We also elucidated that negative impact of salt stress in H. vulgare plants can overcome by the exogenous application of AsA, which not only increased morpho-physiological traits but decreased oxidative stress in the plants by increasing activities of enzymatic antioxidants. We have also explained the negative effect of salt stress on H. vulgare can decrease by exogenous application of AsA, which not only improved morpho-physiological characteristics, ions accumulation in the roots and shoots of the plants, but decreased oxidative stress in plants by increasing antioxidant compounds (enzymatic and non-enzymatic). Taken together, recognizing AsA's role in nutrient uptake introduces new possibilities for agricultural use of this compound and provides a valuable basis for improving plant tolerance and adaptability to potential salinity stress adjustment.
机译：大麦（Hordeum Vulgare L.）是一个主要的谷物谷物，被称为嗜睡症（卤素是一种在高盐度的土壤或水域中生长的耐盐植物）。因此，我们进行了盆栽试验，用于探索植物生长和生物质，光合颜料，气体交换属性，气孔特性，氧化应激和抗氧化剂反应及其相关的基因表达和离子的吸收。用于该分析的土壤以不同的盐度浓度（0,50,100和150μm）在不同的盐度浓度（0,50,100和150μm），并且在发芽后不久将不同水平的抗坏血酸（ASA）提供给植物（0,30和60μm）种子。本研究的结果表明，植物生长和生物质，光合颜料，气体交换参数，气孔特性和离子吸收性显着（P <0.05），通过盐度应力降低，而通过产生浓度在植物中诱导氧化应激与对照处理中生长的植物相比，植物细胞/组织中的活性氧物种（ROS）。最初，抗氧化酶和相对基因表达的活性增加至100μm的盐水平，然后通过增加土壤中的盐水平（150μm）而显着降低（P <0.05） 0？mm的盐度。我们还阐明了H.Vulgare植物中盐胁迫的负面影响可以通过ASA的外源应用来克服，这不仅可以通过增加酶抗氧化剂的活性而增加了静脉生理性状，而且降低了植物中的氧化应激。我们还解释了盐胁迫对H.Vulgare的负面影响可以通过随着ASA的外源应用来降低，这不仅改善了植物根部和芽中的形态生理特性，但通过增加降低了植物中的氧化应激。抗氧化剂化合物（酶促和非酶）。一起携带，认识到ASA在营养吸收中的作用引入了该化合物的农业用途的新可能性，并为提高植物耐受性和适应性，为潜在的盐度应力调节提供了有价值的基础。

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