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Vidal JAD, Sassi FDMC, de Moraes RLR, Artoni RF, Liehr T, Cioffi MB, de Almeida MC. Giant Sex Chromosomes in Omophoita Species (Coleoptera, Chrysomelidae): Structural and Evolutionary Relationships Revealed by Zoo-FISH and Comparative Genomic Hybridization (CGH). INSECTS 2023; 14:insects14050440. [PMID: 37233068 DOI: 10.3390/insects14050440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 04/29/2023] [Accepted: 05/02/2023] [Indexed: 05/27/2023]
Abstract
The beetles of the subtribe Oedionychina (Chrysomelidae, Alticinae) are the only ones that have the atypical giant and achiasmatic sex chromosomes, which are substantially larger than the autosomes. Previous cytogenetic analyses suggest a large accumulation of repetitive DNA in the sex chromosomes. In this study, we examined the similarity of X and Y chromosomes in four Omophoita species and compared genomic differentiation to better understand the evolutionary process and the giant sex chromosomes origin. Intraspecific genomic comparation using male and female genomes of O. octoguttata and interespecific analyses using genomic DNA of O. octoguttata, O. sexnotata, O. magniguttis, and O. personata were performed. In addition, whole chromosome painting (WCP) experiments were performed with X and Y chromosome probes of O. octogutatta. CGH analysis revealed great genomic similarity between the sexes and a sex-specific region on the Y chromosome, and interspecific analysis revealed a genomic divergence between species. In contrast, WCP results revealed that the sex chromosomes of O. octoguttata have high intra- and interspecific similarity with the studied species. Our data support a common origin under the canonical evolution of the sex chromosomes in this group, as they have high genomic similarity between them.
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Affiliation(s)
- Jhon A D Vidal
- Laboratório de Citogenética de Peixes, Departamento de Genética e Evolução, Universidade Federal de São Carlos (UFSCar), Rodovia Washington Luiz Km. 235, C.P. 676, São Carlos 13565-905, Brazil
- Laboratório de Genética e Evolução, Departamento de Biologia Estrutural Molecular e Genética, Universidade Estadual de Ponta Grossa (UEPG), Av. Carlos Cavalcanti, 4748, Ponta Grossa 84030-900, Brazil
| | - Francisco de M C Sassi
- Laboratório de Citogenética de Peixes, Departamento de Genética e Evolução, Universidade Federal de São Carlos (UFSCar), Rodovia Washington Luiz Km. 235, C.P. 676, São Carlos 13565-905, Brazil
| | - Renata L R de Moraes
- Laboratório de Citogenética de Peixes, Departamento de Genética e Evolução, Universidade Federal de São Carlos (UFSCar), Rodovia Washington Luiz Km. 235, C.P. 676, São Carlos 13565-905, Brazil
| | - Roberto F Artoni
- Laboratório de Genética e Evolução, Departamento de Biologia Estrutural Molecular e Genética, Universidade Estadual de Ponta Grossa (UEPG), Av. Carlos Cavalcanti, 4748, Ponta Grossa 84030-900, Brazil
| | - Thomas Liehr
- Institute of Human Genetics, University Hospital Jena, 07747 Jena, Germany
| | - Marcelo B Cioffi
- Laboratório de Citogenética de Peixes, Departamento de Genética e Evolução, Universidade Federal de São Carlos (UFSCar), Rodovia Washington Luiz Km. 235, C.P. 676, São Carlos 13565-905, Brazil
- Institute of Human Genetics, University Hospital Jena, 07747 Jena, Germany
| | - Mara C de Almeida
- Laboratório de Genética e Evolução, Departamento de Biologia Estrutural Molecular e Genética, Universidade Estadual de Ponta Grossa (UEPG), Av. Carlos Cavalcanti, 4748, Ponta Grossa 84030-900, Brazil
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Dutrillaux B, Dutrillaux AM. Why Are X Autosome Rearrangements so Frequent in Beetles? A Study of 50 Cases. Genes (Basel) 2023; 14:150. [PMID: 36672891 PMCID: PMC9859168 DOI: 10.3390/genes14010150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/14/2022] [Accepted: 12/27/2022] [Indexed: 01/09/2023] Open
Abstract
Amongst the 460 karyotypes of Polyphagan Coleoptera that we studied, 50 (10.8%) were carriers of an X autosome rearrangement. In addition to mitotic metaphase analysis, the correct diagnosis was performed on meiotic cells, principally at the pachytene stage. The percentages of these inter-chromosomal rearrangements, principally fusions, varied in relation to the total diploid number of chromosomes: high (51%) below 19, null at 19, low (2.7%) at 20 (the ancestral and modal number), and slightly increasing from 7.1% to 16.7% from 22 to above 30. The involvement of the X in chromosome fusions appears to be more than seven-fold higher than expected for the average of the autosomes. Examples of karyotypes with X autosome rearrangements are shown, including insertion of the whole X in the autosome (ins(A;X)), which has never been reported before in animals. End-to-end fusions (Robertsonian translocations, terminal rearrangements, and pseudo-dicentrics) are the most frequent types of X autosome rearrangements. As in the 34 species with a 19,X formula, there was no trace of the Y chromosome in the 50 karyotypes with an X autosome rearrangement, which demonstrates the dispensability of this chromosome. In most instances, C-banded heterochromatin was present at the X autosome junction, which suggests that it insulates the gonosome from the autosome portions, whose genes are subjected to different levels of expression. Finally, it is proposed that the very preferential involvement of the X in inter-chromosome rearrangements is explained by: (1) the frequent acrocentric morphology of the X, thus the terminal position of constitutive heterochromatin, which can insulate the attached gonosomal and autosomal components; (2) the dispensability of the Y chromosome, which considerably minimizes the deleterious consequences of the heterozygous status in male meiosis, (3) following the rapid loss of the useless Y chromosome, the correct segregation of the X autosome-autosome trivalent, which ipso facto is ensured by a chiasma in its autosomal portion.
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Affiliation(s)
- Bernard Dutrillaux
- Institut de Systématique, Évolution, Biodiversité, ISYEB-UMR 7205–CNRS, MNHN, EPHE, Sorbonne Université, 57 rue Cuvier CP50 F, 75005 Paris, France
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Keeling CI, Campbell EO, Batista PD, Shegelski VA, Trevoy SAL, Huber DPW, Janes JK, Sperling FAH. Chromosome-level genome assembly reveals genomic architecture of northern range expansion in the mountain pine beetle, Dendroctonus ponderosae Hopkins (Coleoptera: Curculionidae). Mol Ecol Resour 2021; 22:1149-1167. [PMID: 34637588 DOI: 10.1111/1755-0998.13528] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 10/04/2021] [Accepted: 10/05/2021] [Indexed: 12/22/2022]
Abstract
Genome sequencing methods and assembly tools have improved dramatically since the 2013 publication of draft genome assemblies for the mountain pine beetle, Dendroctonus ponderosae Hopkins (Coleoptera: Curculionidae). We conducted proximity ligation library sequencing and scaffolding to improve contiguity, and then used linkage mapping and recent bioinformatic tools for correction and further improvement. The new assemblies have dramatically improved contiguity and gaps compared to the originals: N50 values increased 26- to 36-fold, and the number of gaps were reduced by half. Ninety per cent of the content of the assemblies is now contained in 12 and 11 scaffolds for the female and male assemblies, respectively. Based on linkage mapping information, the 12 largest scaffolds in both assemblies represent all 11 autosomal chromosomes and the neo-X chromosome. These assemblies now have nearly chromosome-sized scaffolds and will be instrumental for studying genomic architecture, chromosome evolution, population genomics, functional genomics, and adaptation in this and other pest insects. We also identified regions in two chromosomes, including the ancestral-X portion of the neo-X chromosome, with elevated differentiation between northern and southern Canadian populations.
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Affiliation(s)
- Christopher I Keeling
- Laurentian Forestry Centre, Canadian Forest Service, Natural Resources Canada, Québec, QC, Canada.,Département de biochimie, de microbiologie et de bio-informatique, Université Laval, Québec, QC, Canada
| | - Erin O Campbell
- Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada
| | - Philip D Batista
- Faculty of Environment, University of Northern British Columbia, Prince George, BC, Canada
| | - Victor A Shegelski
- Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada
| | - Stephen A L Trevoy
- Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada
| | - Dezene P W Huber
- Faculty of Environment, University of Northern British Columbia, Prince George, BC, Canada
| | - Jasmine K Janes
- Biology Department, Vancouver Island University, Nanaimo, BC, Canada.,School of Environmental and Rural Studies, University of New England, Armidale, NSW, Australia
| | - Felix A H Sperling
- Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada
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Munro HL, Sullivan BT, Villari C, Gandhi KJK. A Review of the Ecology and Management of Black Turpentine Beetle (Coleoptera: Curculionidae). ENVIRONMENTAL ENTOMOLOGY 2019; 48:765-783. [PMID: 31145799 DOI: 10.1093/ee/nvz050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Indexed: 06/09/2023]
Abstract
The black turpentine beetle, Dendroctonus terebrans Olivier is the largest pine-infesting bark beetle native to the southern and eastern United States. It generally reproduces in fresh stumps and bases of trees weakened or killed by other biotic or abiotic agents, although it can also infest and sometimes kills apparently healthy trees. Its numbers can build when large amounts of host material become available (typically through a disturbance), and black turpentine beetle-caused mortality at a local scale can become considerable. Here, we provide a complete review of the literature on this species, including its taxonomy, host, life history, chemical ecology, arthropod and microbial associates, and management options. We also provide original data on numbers of instars, acoustic signals, and pheromone chirality in this species. Our survey of the existing literature revealed that key biological characteristics of black turpentine beetles are known, but interactions with closely associated organisms, economic and ecological impacts, and improvements to monitoring and management practices have been only partially investigated.
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Affiliation(s)
- Holly L Munro
- D.B. Warnell School of Forestry, University of Georgia, Athens, GA
| | | | - Caterina Villari
- D.B. Warnell School of Forestry, University of Georgia, Athens, GA
| | - Kamal J K Gandhi
- D.B. Warnell School of Forestry, University of Georgia, Athens, GA
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Dutrillaux AM, Dutrillaux B. Different behaviour of C-banded peri-centromeric heterochromatin between sex chromosomes and autosomes in Polyphagan beetles. COMPARATIVE CYTOGENETICS 2019; 13:179-192. [PMID: 31327988 PMCID: PMC6620206 DOI: 10.3897/compcytogen.v13i2.34746] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 05/21/2019] [Indexed: 06/10/2023]
Abstract
Heterochromatin variation was studied after C-banding of male karyotypes with a XY sex formula from 224 species belonging to most of the main families of Coleoptera. The karyotypes were classified in relation with the ratio heterochromatin/euchromatin total amounts and the amounts of heterochromatin on autosomes and gonosomes were compared. The C-banded karyotypes of 19 species, representing characteristic profiles are presented. This analysis shows that there is a strong tendency for the homogenization of the size of the peri-centromeric C-banded heterochromatin on autosomes. The amount of heterochromatin on the X roughly follows the variations of autosomes. At contrast, the C-banded heterochromatin of the Y, most frequently absent or very small and rarely amplified, looks quite independent from that of other chromosomes. We conclude that the Xs and autosomes, but not the Y, possibly share some, but not all mechanisms of heterochromatin amplification/reduction. The theoretical models of heterochromatin expansion are discussed in the light of these data.
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Affiliation(s)
- Anne-Marie Dutrillaux
- UMR7205 MNHN CNRS UMPC EPHE Institut de Systématique, Evolution, Biodiversité. Muséum National d’histoire Naturelle, Sorbonne Universités, 57, rue Cuvier, CP39, UMR7205 Paris, FranceSorbonne UniversitésParisFrance
| | - Bernard Dutrillaux
- UMR7205 MNHN CNRS UMPC EPHE Institut de Systématique, Evolution, Biodiversité. Muséum National d’histoire Naturelle, Sorbonne Universités, 57, rue Cuvier, CP39, UMR7205 Paris, FranceSorbonne UniversitésParisFrance
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