纳米粒子(NPs)在调节植物对盐胁迫的耐受性方面很重要。薄荷是应用最广泛的芳香植物之一,对盐胁迫有很高的敏感性。本研究调查了生理和生化因素,以更好地了解肉桂酸(CA)和肉桂酸纳米复合材料在薄荷植物盐度控制中的行为。第一个因素是不同盐浓度的盐胁迫,包括0、50、100和150mg/L,第二个因素是50μMCA,第三个因素是基于羧甲基纤维素的50μMCA纳米复合材料(CMC-CANC)。结果表明,胁迫标记随着盐度水平的增加而增加。相反,用盐度处理的植物显示生理和光合参数下降,而CA和CMCCANC的应用增加了这些关键参数。在盐度下,与对照相比,丙二醛和过氧化氢含量分别下降11.3%和70.4%,分别。此外,CA和CMC-CANC通过增加脯氨酸等相容性溶质含量来增强薄荷对盐度的耐受性,游离氨基酸,蛋白质含量,和可溶性碳水化合物,增加抗氧化酶,和减少植物组织中的胁迫标记。与对照相比,叶绿素荧光和脯氨酸含量分别增加了1.1%和172.1%,分别。盐度胁迫对所有生理和生化参数产生负面影响,但CA和CMC-CANC治疗改善了它们。我们得出结论,纳米复合材料,一种生物兴奋剂,在盐度条件下显着增强薄荷耐受性。
Nanoparticles (NPs) are important in regulating plant tolerance to salt stress. Peppermint is one of the most widely used aromatic plants, with a high sensitivity to salt stress. The present study investigated physiological and biochemical factors to understand better the behavior of cinnamic acid (CA) and cinnamic acid nanocomposite in salinity control in peppermint plants. The first factor was salt stress with different salt concentrations, including 0, 50, 100, and 150 mg/L, the second factor was 50 μM CA, and the third factor was 50 μM CA nanocomposite based on carboxymethyl cellulose (CMC-CA NC). Results showed that stress markers increased with increasing salinity levels. On the contrary, plants treated with salinity showed a decrease in physiological and photosynthetic parameters, while the application of CA and CMC CA NC increased these critical parameters. Under salinity, compared to the control, malondialdehyde and hydrogen peroxide contents decreased by 11.3% and 70.4%, respectively. Furthermore, CA and CMC-CA NC enhanced peppermint tolerance to salinity by increasing compatible solute content such as proline, free amino acids, protein content, and soluble carbohydrates, increasing antioxidant enzymes, and decreasing stress markers in plant tissues. Compared to the control, chlorophyll fluorescence and proline content increased by 1.1% and 172.1%, respectively. Salinity stress negatively affected all physiological and biochemical parameters, but CA and CMC-CA NC treatments improved them. We concluded that the nanocomposite, a biostimulant, significantly enhances mint tolerance under salinity conditions.