Reduced phytotoxicity of propazine on wheat, maize and rapeseed by salicylic acid
| Autor: | Fei Xie, Feng Fan Lu, Jing Jing Zhang, Jing Hua Zhou, Hong Yang, Qian Nan Guo, She Feng Jin, Hong Mei Zhu, Ya Kun Wang |
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| Rok vydání: | 2018 |
| Předmět: |
Chlorophyll
Rapeseed Health Toxicology and Mutagenesis 0211 other engineering and technologies 02 engineering and technology 010501 environmental sciences Zea mays 01 natural sciences High-performance liquid chromatography Soil chemistry.chemical_compound Triticum Glutathione Transferase Peroxidase 0105 earth and related environmental sciences 021110 strategic defence & security studies Rhizosphere biology Herbicides Triazines Brassica rapa fungi Public Health Environmental and Occupational Health food and beverages General Medicine Pollution Horticulture chemistry Soil water biology.protein Phytotoxicity Salicylic Acid Salicylic acid |
| Zdroj: | Ecotoxicology and Environmental Safety. 162:42-50 |
| ISSN: | 0147-6513 |
| DOI: | 10.1016/j.ecoenv.2018.06.068 |
| Popis: | Propazine belongs to the triazine herbicide family and widely used in the farmland for crop production. Recent studies have shown that the residue of propazine in environment is accumulative. This inevitably results in accumulation of propazine in crops. Therefore, reduction of propazine toxicity and accumulation in crops is critically important. In this study, the growth of wheat, maize and rapeseed was significantly inhibited by 2, 8 and 0.4 mg kg-1 propazine in soils. The chlorophyll content of the three crops also showed significant decrease, while the electrolyte permeability, a biomarker of cellular damage, increased in the plant cells. However, when plants were sprayed with 5 mg L-1 of salicylic acid (SA), the propazine phytotoxicity of the crops was relieved, with increased chlorophyll content and reduced electrolyte permeability of all crops. Meanwhile, the activities of peroxidase (POD) and glutathione transferase (GST) remained lower. The propazine accumulation in the crops and the residues in the soil were determined by high performance liquid chromatography. The concentration of propazine in plants and soils treated by SA was less than that of the untreated control. Six propazine degraded products (derivatives) in rhizosphere of wheat were characterized using ultraperformance liquid chromatography with a quadrupole-time-of-flight tandem mass spectrometer. Our work indicates that the improved growth of crops was possibly due to the acceleration of propazine degradation by salicylic acid. |
| Databáze: | OpenAIRE |
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