Journal
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
Volume 204, Issue -, Pages -Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ecoenv.2020.111048
Keywords
Cadmium; Toxicity; Pseudodiaptomus annandalei; Sex; Transcriptome; Physiology
Categories
Funding
- National Taiwan Ocean University
- French Ministry for Europe and Foreign Affairs
- Ministry of Science and Technology (MOST), Taiwan [MOST 108-2621-M-019-003, MOST 109-2621-M-019-002]
- Center of Excellence for the Oceans, National Taiwan Ocean University, Taiwan
- region Hauts-de-France
- French government
- Europe (FEDER)
- IFREMER
- International Associated Laboratory between the University of Lille and the National Taiwan Ocean University (IAL MULTIFAQUA)
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In this study, the whole transcriptome and sex-specific differential gene expression of the copepod Pseudodiaptomus annandalei exposed to cadmium (Cd) were investigated. P. annandalei were exposed to 40 mu g/L Cd from the naupliar stage to male and female adults. High-throughput transcriptome sequencing (RNA-seq) was performed with copepod samples using an Illumina Hiseg (TM) 2000 platform. TransDecoder analysis found 32,625 putative open reading frame contigs. At p-values of <0.001, a total of 4756 differentially expressed genes (DEGs) (2216 up-regulated and 2540 down-regulated genes) were found in male copepods. Whereas a total of 2879 DEGs (2007 up-regulated and 872 down-regulated genes) were found in female copepods. A few selected cellular stress response genes, involved in xenobiotic metabolism, energy metabolism, growth, and development as a result of Cd exposure in the copepods were discussed. The study showed that most of these processes were changed in a sex-specific manner, accounting for the different sensitivities of male and female copepods. Results suggest and reinforce that sex is an important factor to be considered in ecotoxicogenomics.
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