Ahmed Aisha M A, Khalid Khalid A
Botany Department, National Research Centre, El Buhouth St., 12622, Dokki, Cairo, Egypt.
Medicinal and Aromatic Plants Department, National Research Centre, El Buhouth St., 12622, Dokki, Cairo, Egypt.
Heliyon. 2023 Jul 13;9(7):e18262. doi: 10.1016/j.heliyon.2023.e18262. eCollection 2023 Jul.
Essential oil of geranium () has biological activities that make it used in food and pharmaceutical manufactures. High salinity is one of the factors that lead to lack of expansion in the production of medicinal and aromatic plants, especially in the new reclaimed soil located at arid and semi arid regions. Glutathione is a natural antioxidant that can help plants to withstand unfavorable environmental conditions such as the salinity of irrigation water. This trial aimed to diminish the undesirable effect of exposure to irrigation with salt water on geranium herbs through subjected them to exogenous application of glutathione. Geranium plants were irrigated with various concentrations of salt water with sodium chloride (0.0, 34.2, 51.3, and 68.4 mM) without (0 mg/L) or with glutathione (375 mg/L). Plants exposed to various rates of saline irrigation water with glutathione resulted in higher values of growth criterions (fresh and dry aerial parts), photosynthetic pigments, carbohydrates, protein, proline, essential oil (% or yield), antioxidant enzymes (peroxidase and superoxide dismutase), nitrogen, phosphorous, potassium, calcium, iron, zinc, manganese and copper than those subjected to saline irrigation water without glutathione. Higher amounts were found in sodium and chloride of plant treated with saline irrigation water than those treated saline irrigation water with glutathione. It may be summarized that productivity of geranium plants can be improved with adapting them under saline irrigation conditions by adding glutathione. This trial benefits the producers of geranium to alleviate the hurtful effects of salinity in reclaimed regions with adding glutathione.
天竺葵精油具有生物活性，这使其被用于食品和制药生产。高盐度是导致药用和芳香植物产量增长受限的因素之一，尤其是在干旱和半干旱地区的新开垦土壤中。谷胱甘肽是一种天然抗氧化剂，能够帮助植物抵御诸如灌溉水盐度等不利环境条件。本试验旨在通过对天竺葵植株进行谷胱甘肽外源施用，减轻盐水灌溉对天竺葵药草的不良影响。天竺葵植株用不同浓度的氯化钠盐水（0.0、34.2、51.3和68.4 mM）进行灌溉，其中一组不添加谷胱甘肽（0 mg/L），另一组添加谷胱甘肽（375 mg/L）。与未添加谷胱甘肽的盐水灌溉处理相比，添加谷胱甘肽的不同盐度灌溉水处理的植株在生长指标（地上部分鲜重和干重）、光合色素、碳水化合物、蛋白质、脯氨酸、精油（含量或产量）、抗氧化酶（过氧化物酶和超氧化物歧化酶）、氮、磷、钾、钙、铁、锌、锰和铜等方面的值更高。用盐水灌溉水处理的植株中的钠和氯含量高于用添加谷胱甘肽的盐水灌溉水处理的植株。可以总结为，通过添加谷胱甘肽使天竺葵植株适应盐渍灌溉条件，可以提高其生产力。本试验有助于天竺葵生产者通过添加谷胱甘肽减轻开垦地区盐度的有害影响。
