Integrated proteomics, metabolomics and physiological analyses for dissecting the toxic effects of halosulfuron-methyl on soybean seedlings (Glycine max merr.)
| Autor: | Yinfang Yu, Yuanfu Li, Xuesheng Li, Qiannan Zhang, Huihua Tan |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Proteomics
0106 biological sciences 0301 basic medicine Antioxidant Physiology medicine.medical_treatment Dehydrogenase Plant Science Photosynthesis 01 natural sciences Aconitase 03 medical and health sciences chemistry.chemical_compound Genetics medicine Metabolomics Plant Proteins Herbicides Chemistry Chlorophyll A food and beverages Chloroplast Citric acid cycle Sulfonylurea Compounds 030104 developmental biology Biochemistry Seedlings Chlorophyll Phytotoxicity Soybeans 010606 plant biology & botany |
| Zdroj: | Plant Physiology and Biochemistry. 157:303-315 |
| ISSN: | 0981-9428 |
| DOI: | 10.1016/j.plaphy.2020.10.033 |
| Popis: | Halosulfuron methyl (HSM) is a herbicide widely used to control sedge and broad-leaved weeds during crop production, but its environmental residue may damage non-target crops. Here, proteomics and metabolomics methods were used to explore the phytotoxicity mechanisms of HSM against soybean (Glycine max Merr.). Soybean seedlings were exposed to 0.01, 0.05 and 0.5 mg/L HSM for 8 d. The HSM applications significantly reduced chlorophyll and carotenoid contents in HSM-treated seedlings. Additionally, chlorophyll a fluorescence was seriously affected. The glutathione, hydrogen peroxide and malondialdehyde contents, as well as antioxidant enzyme activities, significantly increased in seedlings exposed to HSM. Furthermore, five enzymes involved in the tricarboxylic acid (TCA) cycle, α-ketoglutarate dehydrogenase, isocitrate dehydrogenase, aconitase, malic dehydrogenase and succinate dehydrogenase, were inhibited to varying degrees in HSM-treated seedlings compared with controls. Proteomics results showed multiple differentially abundant proteins involved in chlorophyll synthesis, photosystem processes and chloroplast ATP synthetase were down-regulated. Metabolomics analyses revealed that metabolites involved in the TCA cycle decreased significantly. Moreover, metabolites and proteins related to reactive oxygen species detoxification accumulated. In conclusion, the phytotoxicity mechanisms of HSM against soybean mainly act by damaging the photosynthetic machinery, inhibiting chlorophyll synthesis, interrupting the TCA cycle and causing oxidative stress. These results provide new insights into the toxicity mechanisms of sulfonylurea herbicides against non-target crops. |
| Databáze: | OpenAIRE |
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