2021
DOI: 10.1093/molbev/msaa336
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The Centromere Histone Is Conserved and Associated with Tandem Repeats Sharing a Conserved 19-bp Box in the Holocentromere of Meloidogyne Nematodes

Abstract: Although centromeres have conserved function, centromere-specific histone H3 (CenH3) and centromeric DNA evolve rapidly. The centromere drive model explains this phenomenon as a consequence of the conflict between fast-evolving DNA and CenH3, suggesting asymmetry in female meiosis as a crucial factor. We characterized evolution of the CenH3 protein in three closely related, polyploid mitotic parthenogenetic species of the Meloidogyne incognita group, and in the distantly related meiotic parthenogen Meloidogyne… Show more

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Cited by 23 publications
(31 citation statements)
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“…Repeat-based holocentromeres in beak-sedges comprise small islands (20-25 kb) of centromeric Tyba repeats, in which high mCpG, low H3K9me2, and depletion of H3K4me3 distinguish them from other holocentric genomes with and without repeatbased holocentromeres (Cortes-Silva et al, 2020;Despot-Slade et al, 2021;Nhim et al, 2022;Steiner and Henikoff, 2014). The association levels of H3K9me2 and mCHG at the core (low) and flanking (high) centromere units in R. pubera are strikingly similar to the recently reported A. thaliana centromeres (Naish et al, 2021).…”
Section: Repeat-based Holocentromeres Influence Genome Organization A...mentioning
confidence: 79%
“…Repeat-based holocentromeres in beak-sedges comprise small islands (20-25 kb) of centromeric Tyba repeats, in which high mCpG, low H3K9me2, and depletion of H3K4me3 distinguish them from other holocentric genomes with and without repeatbased holocentromeres (Cortes-Silva et al, 2020;Despot-Slade et al, 2021;Nhim et al, 2022;Steiner and Henikoff, 2014). The association levels of H3K9me2 and mCHG at the core (low) and flanking (high) centromere units in R. pubera are strikingly similar to the recently reported A. thaliana centromeres (Naish et al, 2021).…”
Section: Repeat-based Holocentromeres Influence Genome Organization A...mentioning
confidence: 79%
“…Conflicting evolutionary selective pressures on CenH3 between these functions (e.g., mitotic vs. meiotic, conserved vs. rapidly evolving) could be resolved by gene duplication, which allows the duplicate (paralog) and ancestral genes to specialize for different functions ( Hittinger and Carroll 2007 ; Des Marais and Rausher 2008 ; Gallach and Betrán 2011 ). Indeed, CenH3 genes have also undergone repeated gene duplications not just in plants but also in several animal species including cows, fruit flies, mosquitoes, and nematodes ( Li and Huang 2008 ; Zedek and Bureš 2016 ; Kursel and Malik 2017 ; Ishii et al 2020 ; Kursel et al 2020 , 2021 ; Despot-Slade et al 2021 ; Elisafenko et al 2021 ). Cytological evidence in Drosophila virilis suggests that divergent CenH3 paralogs can acquire separate, tissue-specific functions ( Kursel et al 2021 ).…”
Section: Introductionmentioning
confidence: 99%
“…In contrast to holocentric insects that have lost CenH3 , CenH3 homologs are present in other holocentric animal and plant species ( Drinnenberg et al 2014 ). Moreover, several nematode clades encode duplications and diversification of CenH3 genes ( Despot-Slade et al 2021 ). Holocentric chromosome segregation in nematodes has been best studied in C. elegans , which encodes two CenH3 paralogs.…”
Section: Introductionmentioning
confidence: 99%
“…Conflicting evolutionary selective pressures on CenH3 between these functions ( e.g ., mitotic versus meiotic, conserved versus rapidly evolving) could be resolved by gene duplication, which allows the duplicate (paralog) and ancestral genes to specialize in different functions (Gallach and Betrán 2011). Indeed, CenH3 genes have also undergone repeated gene duplications not just in plant but also in several animal species including cows, fruit flies, mosquitoes, and nematodes (Li and Huang 2008; Zedek and Bureš 2016; Kursel and Malik 2017; Ishii, et al 2020; Kursel, et al 2020; Despot-Slade, et al 2021; Elisafenko, et al 2021; Kursel, et al 2021). Cytological evidence in Drosophila virilis suggests that divergent CenH3 paralogs can acquire separate, tissue-specific functions (Kursel, et al 2021).…”
Section: Introductionmentioning
confidence: 99%
“…In contrast to holocentric insects, CenH3 homologs are present in other holocentric animal and plant species (Drinnenberg, et al 2014). Moreover, several nematode clades encode duplications and diversification of CenH3 genes (Despot-Slade, et al 2021). Holocentric chromosome segregation in nematodes has been best studied in C. elegans , which encodes two CenH3 paralogs.…”
Section: Introductionmentioning
confidence: 99%