Elevated CO2 reduced antimony toxicity in wheat plants by improving photosynthesis, soil microbial content, minerals, and redox status

• DOI: 10.3389/fpls.2023.1244019
• Publication Date: 2023-09-13T21:56:00Z
• Authors: Galal Khamis; Ahmed Mohamed Reyad; Emad A. Alsherif; Mahmoud M. Y. Madany; Shereen Magdy Korany; Han Asard; Hamada AbdElgawad
• Keywords: 0301 basic medicine; 03 medical and health sciences; antioxidants; photosynthesis; antimony; wheat; minerals contents; Plant culture; eCO2; Plant Science; SB1-1110

Antimony (Sb), a common rare heavy metal, is naturally present in soils at low concentrations. However, it increasingly used industrial applications, which turn, leads to an increased release into the environment, exerting detrimental impact on plant growth. Thus, important study Sb effects plants under current and future CO2 (eCO2).To this end, high concentrations (1500 mg/kg soil) ambient (420 ppm) eCO2 (710 wheat growth, physiology (photosynthesis reactions) biochemistry (minerals contents, redox state), were studied soil microbial evaluated.Our results showed that uptake significantly decreased growth by 42%. This reduction could be explained inhibition photosynthesis rate, Rubisco activity, photosynthetic pigments (Cha Chb), 35%, 44%, 51%, respectively. reduced total bacterial fungal count phenolic organic acids levels decrease uptake. Moreover, induced oxidative markers, as indicated of H2O2 MDA (1.96 2.8-fold compared control condition, respectively). To reduce damage, antioxidant capacity (TAC), CAT, POX, SOD enzymes activity 1.61, 2.2, 2.87, 1.86-fold, In contrast, mitigated Sb-treated wheat. coapplication harmful effect reducing improving enzyme 0.58, 1.57, 1.4-fold corresponding treatments, improve mineral availability for plants, accumulation phenolics level was observed. reduces Sb-induced damage status. conclusion, our has provided valuable insights physiological biochemical bases underlie Sb-stress mitigating conditions. Furthermore, step define strategies prevent its adverse future.