Department of Botany, Plant Physiology Section, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002, India.
Department of Biology, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj, 11942, Saudi Arabia.
Protoplasma. 2024 Jan;261(1):125-142. doi: 10.1007/s00709-023-01885-z. Epub 2023 Aug 7.
Quercetin is a bioactive natural compound with an antioxidative property that can potentially modify plant physiology. The current investigation aimed to gauge the effect of different concentrations of foliar spray of quercetin (0, 0.5, 1, 1.5, 2.0 mM) on several morphological and physio-biochemical performances of Abelmoschus esculentus L. (Moench.) plants under normal environmental conditions. The foliar spray on the plant leaves was applied 25 days after sowing (DAS) and continued up to 30 DAS once each day. The plants were sampled at 30 and 45 DAS to monitor several parameters. The foliar treatments of quercetin significantly upgraded all the studied parameters. The results direct that most of the traits such as growth, nutrient uptake, photosynthetic, and enzyme activities were promoted in a dose-dependent way. Quercetin application lowered the reactive oxygen species (ROS) buildup by increasing the antioxidant enzyme activities. Microscopic investigations further revealed a significant enhancement in the stomatal aperture under quercetin application. Out of several doses tested, 1 mM of quercetin proved best and can be used for further investigations.
槲皮素是一种具有抗氧化特性的生物活性天然化合物，它可能会改变植物的生理学特性。本研究旨在评估不同浓度的槲皮素叶面喷施（0、0.5、1、1.5、2.0 mM）对在正常环境条件下生长的黄蜀葵（Abelmoschus esculentus L. （Moench.））植株的几种形态和生理生化性能的影响。叶面喷施在播种后 25 天（DAS）进行，每天一次，持续到 30 DAS。在 30 和 45 DAS 对植物进行采样，以监测几个参数。槲皮素的叶面处理显著提高了所有研究的参数。结果表明，大多数性状，如生长、养分吸收、光合作用和酶活性，都呈剂量依赖性增加。槲皮素的应用通过增加抗氧化酶的活性来降低活性氧（ROS）的积累。显微镜观察进一步表明，在槲皮素的应用下，气孔开度有显著提高。在所测试的几种剂量中，1 mM 的槲皮素效果最佳，可用于进一步的研究。
