Identifying conserved polychaete molecular markers of metal exposure: Comparative analyses using the Alitta virens (Annelida, Lophotrochozoa) transcriptome
نویسندگان
چکیده
Polychaetes are vital for evaluating the effects of toxic metals in marine systems, and sensitive molecular biomarkers should be integral to monitoring efforts. However, few polychaete markers that exist inconsistent, even within same species, failing identify gene expression changes metal-exposed animals incurring clear metabolic costs. Comparing previously characterised metal-responsive genes with those another carefully selected species could applicable across polychaetes. The ragworm Alitta virens (Sars, 1835) is particularly suited such comparisons due its dominance fully saline coastal areas, widespread distribution, large biomass, phylogenetic position relative other ‘omic’ resources. A transcriptome atlas A. was generated an RNASeq-qPCR screening approach used characterise response chronic exposures environmentally relevant concentrations copper zinc controlled mesocosms. Genes presenting dramatic were compared known polychaetes new possible assess currently used. This revealed some current probably abandoned (e.g. Atox1), while others, as GST-Omega, caution, different appear upregulate distinct GST-Omega orthologues. In addition, give indication induced by metal exposure phylogenetically divergent polychaetes, including a suite haemoglobin subunits linker chains play conserved roles metal-stress response. Although newly identified need further characterisation, they offer alternatives plainly insufficient.
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ژورنال
عنوان ژورنال: Comparative Biochemistry and Physiology C-toxicology & Pharmacology
سال: 2021
ISSN: ['1878-1659', '1532-0456']
DOI: https://doi.org/10.1016/j.cbpc.2020.108913