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Effect of arsenite on the proteome of earthworms Eisenia fetida

Soil Ecology Letters, ISSN: 2662-2297, Vol: 5, Issue: 1, Page: 181-194
2023
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Article Description

Arsenic (As) is broadly distributed due to natural and anthropogenic sources, and it is toxic to organisms. This study aimed to investigate the proteomic response in earthworm exposed to As. Earthworms were exposed to As in soil at 5–80 mg kg, and samples were collected after 60 days exposure. Two-dimensional electrophoresis (2-DE) was used to separate the proteins in earthworm homogenate, then differentially expressed proteins (DEPs) were identified using MALDI-TOF/TOF-MS analysis. After2-DE, 36 DEPs were found and 24 of them were successfully identified. 79.2% of DEPs were upregulated compared to the control group. The maximum fold change reached 53.8 in spot 3108 in the 80 mg kg As group. Two proteins were not found in the control group but found in the As treated groups. Proteins were grouped into metabolism, signal transduction, stress-related, transport, regulation, and predicted/hypothetical protein categories based on their function. The protein—protein interaction between the DEPs indicated that serum albumin (ALB) is very important, related to 6 other proteins. Proteins were then verified by western blot, the results were in agreement with the proteomic analyses. The identification of induced or repressed proteins because of As in earthworms is helpful to explore the underlying mechanisms of soil arsenic ecotoxicity. [Figure not available: see fulltext.]

Bibliographic Details

Yali Wang; Hongpei Geng; Qian Zuo; Yinsheng Li; Jiangping Qiu; Michelle Thunders

Springer Science and Business Media LLC

Agricultural and Biological Sciences; Environmental Science

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