Uptake and accumulation of lindane in rice and its metabolomics
The bioaccumulation,translocation and metabolomics of organochlorine pollutant lindane in the typical crop in China,rice(Oryza sativa L.)were investigated.The results revealed that under the stress of lindane con-tamination,the lindane concentration in rice roots,and above-ground parts(stems and leaves)had a positive corre-lation with the lindane concentration in the hydroponic solution,which indicated that rice had the ability to absorb lindane.Under different lindane concentrations in the hydroponic solution,the lindane accumulation in rice roots reached its peak on the second day and decreased sharply on the third day.In addition,lindane in rice roots could be transported radially to the above-ground parts,but the transport factor was 0.08-0.13.At subcellular level,the content of lindane in rice roots decreased as organelles＞cytoderm＞cytoplasm,which indicated that the organelle and cell wall were the main storage sites of lindane in rice roots.Under lindane stress,the changes of lipid metabo-lites were the most significant,with 43 up-regulated and 42 down-regulated.The content of isovitexin and other me-tabolites increased,while the content of asparagine and other metabolites decreased under lindane stres,and many metabolic pathways in plant were changed,among which,the sphingolipid metabolic pathway and phenylalanine met-abolic pathway were greatly influenced.
lindanericeplant metabolismuptake and transportationagricultural product safety
万方数据
维普
