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- W4376272061 abstract "Abstract When two species hybridize, the two parental genomes are brought together and some alleles might interact for the first time. To the date, the extent of the transcriptomic changes in first hybrid generations, along with their functional outcome constitute an important knowledge gap especially in non-model organisms. Here we explored the molecular and functional outcomes of hybridization in first-generation hybrid between the blood fluke parasites S. haematobium and S. bovis . To this aim we fist assembled a hybrid reference transcriptome allowing us to measure gene expression in both parental species and hybrids to further described and quantified the profiles of gene expression encountered in hybrids. We identified large-scale gene expression remodeling since up to 55% of genes were differentially expressed in hybrids compared to at least one of the parental species. We further showed that intermediate level of expression in hybrids compared to parental species was the most prevalent expression profile (38% of genes) in agreement with S. haematobium x S. bovis high genomic compatibility and limited divergence. Also, among the differentially expressed genes of each of the identified profiles (intermediate, under-, over-expressed, or matching the expression of one of the parental species), only a few biological processes were found enriched without patterns being consistent through crosses and sexes. Our findings suggest that hybrid heterosis could be due to change in expression of a large portion of random genes which affect various biological processes. Author Summary When two species manage to produce a viable offspring, due to different parental genetic material, new allelic interactions might arise. We do not know much about how genes are expressed in such hybrids compared to their parental species and especially for non-model species. Here we gene expressions in first generation hybrids of two blood flukes’ parasites Schistosoma haematobium and S. bovis. We quantified and categorized gene differentially expressed in first generation hybrids. We showed that more than half the genes of the hybrids were differentially expressed compared to at least one of their parental species, hence showing major gene expression remodeling occurring during hybridization. However, the most common hybrid expression pattern was intermediate level of expression compared to parental species and various but no specific biological processes were associated with hybrids differentially expressed genes. We hypothesized that because S. haematobium and S. bovis remain very compatible, when hybridizing many non-specific genes can have their expression level remodeled hence impacting the overall molecular machinery of the offspring while still sustaining highly operational hybrids." @default.
- W4376272061 created "2023-05-13" @default.
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- W4376272061 date "2023-05-12" @default.
- W4376272061 modified "2023-10-02" @default.
- W4376272061 title "<i>Schistosoma haematobium</i>and<i>Schistosoma bovis</i>first generation hybrids undergo large gene expressions remodeling consistent with species compatibility" @default.
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- W4376272061 doi "https://doi.org/10.1101/2023.05.10.540117" @default.
- W4376272061 hasPublicationYear "2023" @default.
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