Toxic responses of metabolites, organelles and gut microorganisms of Eisenia fetida in a soil with chromium contamination.

Toxic responses of metabolites, organelles and gut microorganisms of Eisenia fetida in a soil with chromium contamination. Environ Pollut. 2019 Aug;251:910-920 Authors: Tang R, Li X, Mo Y, Ma Y, Ding C, Wang J, Zhang T, Wang X Abstract The toxic sensitivity in different physiological levels of chromium (Cr) contaminated soils with environmentally equivalent concentrations (EEC) was fully unknown. The earthworm Eisenia fetida was exposed to a Cr-contaminated soil at the EEC level (referred to as Cr-CS) to characterize the induced toxicity at the whole body, organ, tissue, subcellular structure and metabolic levels. The results showed that the survival rate, weight and biodiversity of the gut microorganisms (organ) had no significant difference (p > 0.05) between control and Cr-CS groups. Qualitative histopathological and subcellular evaluations from morphology showed earthworms obvious injuries. The organelle injuries combined with the metabolic changes provided additional evidence that the Cr-CS damaged the nucleus and probably disturbed the nucleic acid metabolism of earthworms. 2-hexyl-5-ethyl-3-furansulfonate, dimethylglycine, betaine and scyllo-inositol were sensitive and relatively quantitative metabolites that were recommended as potential biomarkers for Cr-CS based on their significant weights in the multivariate analysis model. In addition, the relative abundance of Burkholderiaceae, Enterobacteriaceae and Microscillac...
Source: Environmental Pollution - Category: Environmental Health Authors: Tags: Environ Pollut Source Type: research