Conserved transcriptional responses to cyanobacterial stressors are mediated by alternate regulation of paralogous genes in Daphnia

Molecular Ecology
Jana AsselmanKarel A C De Schamphelaere

Abstract

Despite a significant increase in genomic data, our knowledge of gene functions and their transcriptional responses to environmental stimuli remains limited. Here, we use the model keystone species Daphnia pulex to study environmental responses of genes in the context of their gene family history to better understand the relationship between genome structure and gene function in response to environmental stimuli. Daphnia were exposed to five different treatments, each consisting of a diet supplemented with one of five cyanobacterial species, and a control treatment consisting of a diet of only green algae. Differential gene expression profiles of Daphnia exposed to each of these five cyanobacterial species showed that genes with known functions are more likely to be shared by different expression profiles, whereas genes specific to the lineage of Daphnia are more likely to be unique to a given expression profile. Furthermore, while only a small number of nonlineage-specific genes were conserved across treatment type, there was a high degree of overlap in expression profiles at the functional level. The conservation of functional responses across the different cyanobacterial treatments can be attributed to the treatment-specific...Continue Reading

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Citations

Mar 5, 2016·Environmental Science & Technology·Bogdan DrugăFrancesco Pomati
Mar 28, 2016·Genome Biology and Evolution·Jana AsselmanKarel A C De Schamphelaere
Feb 27, 2017·G3 : Genes - Genomes - Genetics·Zhiqiang YeMichael Lynch
Dec 7, 2017·Environmental Science & Technology·J AsselmanK A C De Schamphelaere
Mar 1, 2019·Environmental Science & Technology·Jana AsselmanKarel A C De Schamphelaere

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