Department of Botany, Banaras Hindu University, Varanasi, India.
Ecotoxicol Environ Saf. 2010 Jul;73(5):1018-27. doi: 10.1016/j.ecoenv.2010.03.008. Epub 2010 Apr 18.
Ethylenediurea (EDU) is suggested for use to evaluate plant response under ambient ozone (O(3)) concentrations. Four EDU treatments, viz. 0 (non-EDU), 150, 300 and 450 mg L(-1), applied as soil drench at 10 days interval to carrot (Daucus carota L. var. Pusa Kesar), grown at a tropical suburban site of Varanasi experiencing mean O(3) concentration of 36.1 ppb during the experimental period. EDU treated plants showed significantly higher antioxidative defense, assimilation capability and reduced membrane lipid peroxidation, which led to better growth and significant yield increments compared to non-EDU treated ones. The magnitude of positive responses was highest at 150 mg L(-1) EDU treatment at 60 DAG, representing the metabolically most active phase of root filling in carrot. This study suggests that the lowest EDU concentration was sufficient to provide protection against negative effects of O(3).
乙二脲（EDU）被建议用于评估环境臭氧（O3）浓度下植物的反应。在实验期间，在瓦拉纳西的热带郊区地点进行生长，该地点的平均 O3 浓度为 36.1 ppb，将 4 种 EDU 处理（即 0（非 EDU）、150、300 和 450 mg L-1）作为土壤淋洗剂，每隔 10 天应用一次，处理胡萝卜（Daucus carota L. var. Pusa Kesar）。与未用 EDU 处理的植物相比，用 EDU 处理的植物表现出明显更高的抗氧化防御、同化能力和降低的膜脂过氧化作用，从而导致更好的生长和显著的产量增加。在 60 DAG 时，150 mg L-1 EDU 处理的正响应幅度最大，这代表了胡萝卜根填充的代谢最活跃阶段。这项研究表明，最低浓度的 EDU 足以提供对 O3 负面影响的保护。
