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2 results on '"lepidopteran chromosome evolution"'

1. Unprecedented reorganization of holocentric chromosomes provides insights into the enigma of lepidopteran chromosome evolution

Author

Rastas, Pasi, Hornett, Emily A., Neethiraj, Ramprasad, Clark, Nathan, Morehouse, Nathan, de la Paz Celorio-Mancera, Maria, Cols, Jofre Carnicer, Dircksen, Heinrich, Meslin-Auclair, Camille, Keehnen, Naomi, Pruisscher, Peter, Sikkink, Kristin, Vives, Maria, Vogel, Heiko, Wiklund, Christer, Woronik, Alyssa, Boggs, Carol L., Nylin, Sören, Wheat, Christopher W., and Hill, Jason

Subjects
reorganization of holocentric chromosomes, lepidopteran chromosome evolution, fungi
Abstract

Chromosome evolution presents an enigma in the mega-diverse Lepidoptera. Most species exhibit constrained chromosome evolution with nearly identical haploid chromosome counts and chromosome-level gene collinearity among species more than 140 million years divergent. However, a few species possess radically inflated chromosomal counts due to extensive fission and fusion events. To address this enigma of constraint in the face of an exceptional ability to change, we investigated an unprecedented reorganization of the standard lepidopteran chromosome structure in the green-veined white butterfly (Pieris napi). We find that gene content in P. napi has been extensively rearranged in large collinear blocks, which until now have been masked by a haploid chromosome number close to the lepidopteran average. We observe that ancient chromosome ends have been maintained and collinear blocks are enriched for functionally related genes suggesting both a mechanism and a possible role for selection in determining the boundaries of these genome-wide rearrangements.

Published
2019

2. Unprecedented reorganization of holocentric chromosomes provides insights into the enigma of lepidopteran chromosome evolution

Author

Hill, Jason, Rastas, Pasi, Hornett, Emily A., Neethiraj, Ramprasad, Clark, Nathan, Morehouse, Nathan, de la Paz Celorio-Mancera, Maria, Cols, Jofre Carnicer, Dircksen, Heinrich, Meslin, Camille, Keehnen, Naomi, Pruisscher, Peter, Sikkink, Kristin, Vives, Maria, Vogel, Heiko, Wiklund, Christer, Woronik, Alyssa, Boggs, Carol L., Nylin, Sören, Wheat, Christopher W., Stockholm University, Department of Medical Biochemistry and Microbiology, Uppsala University, Institute of Biotechnology, Royal Institute of Technology [Stockholm] (KTH )-Albanova University Center, Department of Zoology, University of Cambridge [UK] (CAM), Institute of Integrative Biology, Liverpool School of Tropical Medicine (LSTM), Department of Computational and Systems Biology, University of Pittsburgh (PITT), Pennsylvania Commonwealth System of Higher Education (PCSHE)-Pennsylvania Commonwealth System of Higher Education (PCSHE), Department of Biological Sciences, The Open University [Milton Keynes] (OU), University of Barcelona, Universitat Autònoma de Barcelona (UAB), Institut d'écologie et des sciences de l'environnement de Paris (iEES Paris), Institut National de la Recherche Agronomique (INRA)-Sorbonne Université (SU)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Department of Ecology, Evolution, and Behavior, University of Minnesota [Twin Cities] (UMN), University of Minnesota System-University of Minnesota System, Department of Biology, The University of Mississippi [Oxford], Department of Entomology, Michigan State University [East Lansing], Michigan State University System-Michigan State University System, New York University, New York University [New York] (NYU), NYU System (NYU)-NYU System (NYU), University of South Carolina [Columbia], Funding was provided by the Swedish Research Council [VR grant numbers 2012-3715 (to S.N.), 2010-5341 (to S.N.), and 621-2012-4001 (to C.W.W.)], the Academy of Finland [grant number 131155 (to C.W.W.)], the Knut and Alice Wallenberg Foundation (grant number 2012.0058), and MINECO-FEDER [project number CGL2016- 78093-R (to J.C.C.)], Albanova University Center-Royal Institute of Technology [Stockholm] (KTH ), Department ofComputationaland Systems Biology, Institut de recherche sur la biologie de l'insecte UMR7261 (IRBI), Université de Tours-Centre National de la Recherche Scientifique (CNRS), Pennsylvania Commonwealth System of Higher Education (PCSHE), Institut d'écologie et des sciences de l'environnement de Paris (IEES), Max Planck Institute for Chemical Ecology, and Max-Planck-Gesellschaft

Subjects
Male, endocrine system, GENES, DATABASE, Genetic Linkage, [SDV]Life Sciences [q-bio], NEO-SEX CHROMOSOMES, Genome, Insect, GENOMES, SYSTEMATICS, lepidopteran chromosome evolution, ANNOTATION, CLASSIFICATION, Chromosomes, Evolution, Molecular, qx_560, Collinearity, Chromosome structure, Genome Size, Genetics, Animals, Genetik, Selection, Genetic, Research Articles, Phylogeny, FUSIONS, Evolutionary Biology, Ploidies, qu_500, Chromosome evolution, reorganization of holocentric chromosomes, fungi, 1184 Genetics, developmental biology, physiology, SciAdv r-articles, KARYOTYPE, Chromosome Mapping, Gene content, Bombyx, Chromosome numbers, Cromosomes, Chromosomes, Insect, Lepidoptera, [SDE]Environmental Sciences, qu_550, Female, DIVERSIFICATION, Lepidòpters, Butterflies, Research Article
Abstract

Unprecedented reorganization in a butterfly genome sheds light on the enigma of holocentric chromosome evolution., Chromosome evolution presents an enigma in the mega-diverse Lepidoptera. Most species exhibit constrained chromosome evolution with nearly identical haploid chromosome counts and chromosome-level gene collinearity among species more than 140 million years divergent. However, a few species possess radically inflated chromosomal counts due to extensive fission and fusion events. To address this enigma of constraint in the face of an exceptional ability to change, we investigated an unprecedented reorganization of the standard lepidopteran chromosome structure in the green-veined white butterfly (Pieris napi). We find that gene content in P. napi has been extensively rearranged in large collinear blocks, which until now have been masked by a haploid chromosome number close to the lepidopteran average. We observe that ancient chromosome ends have been maintained and collinear blocks are enriched for functionally related genes suggesting both a mechanism and a possible role for selection in determining the boundaries of these genome-wide rearrangements.

Published
2019

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