Divergent Gene Expression Following Duplication of Meiotic Genes in the Stick Insect Clitarchus hookeri.

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dc.contributor.author Wu, Chen
dc.contributor.author Twort, Victoria G
dc.contributor.author Newcomb, Richard D
dc.contributor.author Buckley, Thomas R
dc.coverage.spatial England
dc.date.accessioned 2021-10-18T22:20:26Z
dc.date.available 2021-10-18T22:20:26Z
dc.date.issued 2021-5
dc.identifier.citation Genome biology and evolution 13(5) May 2021
dc.identifier.issn 1759-6653
dc.identifier.uri https://hdl.handle.net/2292/57022
dc.description.abstract Some animal groups, such as stick insects (Phasmatodea), have repeatedly evolved alternative reproductive strategies, including parthenogenesis. Genomic studies have found modification of the genes underlying meiosis exists in some of these animals. Here we examine the evolution of copy number, evolutionary rate, and gene expression in candidate meiotic genes of the New Zealand geographic parthenogenetic stick insect Clitarchus hookeri. We characterized 101 genes from a de novo transcriptome assembly from female and male gonads that have homology with meiotic genes from other arthropods. For each gene we determined copy number, the pattern of gene duplication relative to other arthropod orthologs, and the potential for meiosis-specific expression. There are five genes duplicated in C. hookeri, including one also duplicated in the stick insect Timema cristinae, that are not or are uncommonly duplicated in other arthropods. These included two sister chromatid cohesion associated genes (SA2 and SCC2), a recombination gene (HOP1), an RNA-silencing gene (AGO2) and a cell-cycle regulation gene (WEE1). Interestingly, WEE1 and SA2 are also duplicated in the cyclical parthenogenetic aphid Acyrthosiphon pisum and Daphnia duplex, respectively, indicating possible roles in the evolution of reproductive mode. Three of these genes (SA2, SCC2, and WEE1) have one copy displaying gonad-specific expression. All genes, with the exception of WEE1, have significantly different nonsynonymous/synonymous ratios between the gene duplicates, indicative of a shift in evolutionary constraints following duplication. These results suggest that stick insects may have evolved genes with novel functions in gamete production by gene duplication.
dc.format.medium Print
dc.language eng
dc.publisher Oxford University Press (OUP)
dc.relation.ispartofseries Genome biology and evolution
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher.
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm
dc.rights.uri https://academic.oup.com/journals/pages/self_archiving_policy_c
dc.subject Phasmatodea
dc.subject gene duplication
dc.subject gene expression
dc.subject meiotic gene
dc.subject parthenogenesis
dc.subject phylogenetic distribution
dc.subject Science & Technology
dc.subject Life Sciences & Biomedicine
dc.subject Evolutionary Biology
dc.subject Genetics & Heredity
dc.subject meiotic gene
dc.subject phylogenetic distribution
dc.subject gene duplication
dc.subject gene expression
dc.subject parthenogenesis
dc.subject Phasmatodea
dc.subject RNA-SEQ DATA
dc.subject DROSOPHILA WEE1
dc.subject NIPPED-B
dc.subject MEIOSIS
dc.subject PROTEIN
dc.subject GENOME
dc.subject PHASMATODEA
dc.subject 0601 Biochemistry and Cell Biology
dc.subject 0603 Evolutionary Biology
dc.subject 0604 Genetics
dc.title Divergent Gene Expression Following Duplication of Meiotic Genes in the Stick Insect Clitarchus hookeri.
dc.type Journal Article
dc.identifier.doi 10.1093/gbe/evab060
pubs.issue 5
pubs.begin-page evab060-
pubs.volume 13
dc.date.updated 2021-09-05T19:45:19Z
dc.rights.holder Copyright: The author en
pubs.author-url https://www.ncbi.nlm.nih.gov/pubmed/33885769
pubs.publication-status Published
dc.rights.accessrights http://purl.org/eprint/accessRights/OpenAccess en
pubs.subtype research-article
pubs.subtype Journal Article
pubs.elements-id 850822
dc.identifier.eissn 1759-6653
dc.identifier.pii 6245840
pubs.number ARTN evab060
pubs.online-publication-date 2021-4-22

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