Influences of Air, Oxygen, Nitrogen, and Carbon Dioxide Nanobubbles on Seed Germination and Plant Growth

作者：Ahmed Khaled Abdella Ahmed, Xiaonan Shi, Likun Hua, Leidy Manzueta, Weihua Qing, Taha F. Marhaba, Wen Zhang · 发表于：Journal of Agricultural and Food Chemistry · 年份：2018 · DOI：10.1021/acs.jafc.8b00333 · 被引用次数：206 · 研究领域：Minerals Flotation and Separation Techniques、Iron oxide chemistry and applications、Geochemistry and Elemental Analysis

Nanobubbles (NBs) hold promise in green and sustainable engineering applications in diverse fields (e.g., water/wastewater treatment, food processing, medical applications, and agriculture). This study investigated the effects of four types of NBs on seed germination and plant growth. Air, oxygen, nitrogen, and carbon dioxide NBs were generated and dispersed in tap water. Different plants, including lettuce, carrot, fava bean, and tomato, were used in germination and growth tests. The seeds in water-containing NBs exhibited 6-25% higher germination rates. Especially, nitrogen NBs exhibited considerable effects in the seed germination, whereas air and carbon dioxide NBs did not significantly promote germination. The growth of stem length and diameter, leave number, and leave width were promoted by NBs (except air). Furthermore, the promotion effect was primarily ascribed to the generation of exogenous reactive oxygen species by NBs and higher efficiency of nutrient fixation or utilization.