利用大剂量和纳米形式的水杨酸增强植物耐旱性的纳米生物技术方法。

Nanobiotechnological Approaches to Enhance Drought Tolerance in Plants Using Salicylic Acid in Bulk and Nanoform.

机构信息

Agricultural Biotechnology Department, College of Biotechnology, Misr University for Science and Technology, Giza 12563, Egypt.

Genetics and Genetic Engineering Department, Faculty of Agriculture, Benha University, Qalyubia 13736, Egypt.

出版信息

Molecules. 2022 Aug 11;27(16):5112. doi: 10.3390/molecules27165112.

Drought has a detrimental effect on crop production, affecting economically important plants' growth rates and development. is an important medicinal plant that produces many pharmacologically active compounds, some of which have significant antitumor activity. The effect of bulk salicylic acid (SA) and salicylic acid nanoparticles (SA-NPs) were evaluated on water-stressed plants. The results showed that SA and SA-NPs alleviated the negative effects of drought in the treated plants by increasing their shoot and root weights, relative water content, leaf area index, chlorophyll content, and total alkaloids percentage. From the results, a low concentration (0.05 mM) of SA-NPs exerted positive effects on the treated plants, while the best results of the bulk SA were recorded after using the highest concentration (0.1 mM). Both treatments increased the expression level of , , , , and genes, while the mRNA level of MPKK1 and MPK6 did not show a significant change. This study discussed the importance of SA-NPs in the induction of drought stress tolerance even when used in low concentrations, in contrast to bulk SA, which exerts significant results only at higher concentrations.

干旱对作物生产有不利影响，影响到经济上重要的植物的生长速度和发育。是一种重要的药用植物，能产生许多具有药理活性的化合物，其中一些具有显著的抗肿瘤活性。评估了大量水杨酸（SA）和水杨酸纳米粒子（SA-NPs）对胁迫下植物的影响。结果表明，SA 和 SA-NPs 通过增加植物的地上部和地下部重量、相对含水量、叶面积指数、叶绿素含量和总生物碱百分比，缓解了干旱对处理植物的负面影响。结果表明，低浓度（0.05 mM）的 SA-NPs 对处理植物有积极作用，而使用最高浓度（0.1 mM）时，大量 SA 的效果最佳。两种处理都增加了、、、、和基因的表达水平，而 MPKK1 和 MPK6 的 mRNA 水平没有显示出显著变化。本研究讨论了 SA-NPs 在诱导干旱胁迫耐受中的重要性，即使在低浓度下使用，也与仅在高浓度下才发挥显著效果的大量 SA 不同。