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Combined physiological and biochemical analysis and molecular biotechnology for atrazine residue reduction in soybeans
Summary
This study combined physiological, biochemical, and molecular biotechnology analyses to investigate the stress response of an organism or crop to a specific environmental challenge. The multi-level approach revealed coordinated cellular defense mechanisms at the gene expression and protein activity level.
To address the problem of atrazine residue in soybeans affecting the ecological environment and human health, in the presentstudy it is proposed to combine the bioorganic fertilizer DNBF10 and the highly efficient degrading bacterial strain AT-b3 with themagnetic biochar carrier MBC to form a novel DMBC-P bioremediation technology. The results indicated that the DMBC-P technologycould effectively reduce the residual amount of atrazine in soybeans and significantly enhance their growth and physiological indexes bypromoting atrazine degradation and phosphorus utilization and reducing oxidative stress. At the physiological and biochemical levels,DNBF10 significantly alleviated atrazine-induced oxidative stress, reducing the IBRv2 values to 1.84 and 1.07 in the leaves and roots,respectively. At the molecular level, the DMBC-P technology significantly altered the gene expression profiles of soybeans, identifying5410 significantly upregulated and 6430 significantly downregulated genes. This indicated that DMBC-P could regulate soybean geneexpression in response to atrazine stress. The results indicate that DMBC-P technology is an effective method for atrazine residuereduction in soybean and has a broad application potential.
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