Genome assembly, sex-biased gene expression and dosage compensation in the damselfly Ischnura elegans
Chauhan, Pallavi LU ; Swaegers, Janne LU ; Sánchez-Guillén, Rosa A. LU ; Svensson, Erik I. LU
; Wellenreuther, Maren
LU
and Hansson, Bengt
LU
(2021)
In Genomics
113(4).
p.1828-1837
- Abstract
The evolution of sex chromosomes, and patterns of sex-biased gene expression and dosage compensation, are poorly known among early winged insects such as odonates. We assembled and annotated the genome of Ischnura elegans (blue-tailed damselfly), which, like other odonates, has a male-hemigametic sex-determining system (X0 males, XX females). By identifying X-linked genes in I. elegans and their orthologs in other insect genomes, we found homologies between the X chromosome in odonates and chromosomes of other orders, including the X chromosome in Coleoptera. Next, we showed balanced expression of X-linked genes between sexes in adult I. elegans, i.e. evidence of dosage compensation. Finally, among the genes in the sex-determining... (More)
The evolution of sex chromosomes, and patterns of sex-biased gene expression and dosage compensation, are poorly known among early winged insects such as odonates. We assembled and annotated the genome of Ischnura elegans (blue-tailed damselfly), which, like other odonates, has a male-hemigametic sex-determining system (X0 males, XX females). By identifying X-linked genes in I. elegans and their orthologs in other insect genomes, we found homologies between the X chromosome in odonates and chromosomes of other orders, including the X chromosome in Coleoptera. Next, we showed balanced expression of X-linked genes between sexes in adult I. elegans, i.e. evidence of dosage compensation. Finally, among the genes in the sex-determining pathway only fruitless was found to be X-linked, while only doublesex showed sex-biased expression. This study reveals partly conserved sex chromosome synteny and independent evolution of dosage compensation among insect orders separated by several hundred million years of evolutionary history.
(Less)
- author
- Chauhan, Pallavi
LU
; Swaegers, Janne
LU
; Sánchez-Guillén, Rosa A.
LU
; Svensson, Erik I.
LU
; Wellenreuther, Maren
LU
and Hansson, Bengt
LU
- organization
- publishing date
- 2021-07-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Damselflies, Dosage compensation, Genome assembly, Ischnura elegans, Sex chromosomes
- in
- Genomics
- volume
- 113
- issue
- 4
- pages
- 10 pages
- publisher
- Academic Press
- external identifiers
-
- scopus:85104793281
- pmid:33831439
- ISSN
- 0888-7543
- DOI
- 10.1016/j.ygeno.2021.04.003
- language
- English
- LU publication?
- yes
- id
- 4d8e28e6-0cf2-4fd6-8381-4574a7395b32
- date added to LUP
- 2021-05-17 13:59:02
- date last changed
- 2024-06-15 11:15:33
@article{4d8e28e6-0cf2-4fd6-8381-4574a7395b32,
abstract = {{<p>The evolution of sex chromosomes, and patterns of sex-biased gene expression and dosage compensation, are poorly known among early winged insects such as odonates. We assembled and annotated the genome of Ischnura elegans (blue-tailed damselfly), which, like other odonates, has a male-hemigametic sex-determining system (X0 males, XX females). By identifying X-linked genes in I. elegans and their orthologs in other insect genomes, we found homologies between the X chromosome in odonates and chromosomes of other orders, including the X chromosome in Coleoptera. Next, we showed balanced expression of X-linked genes between sexes in adult I. elegans, i.e. evidence of dosage compensation. Finally, among the genes in the sex-determining pathway only fruitless was found to be X-linked, while only doublesex showed sex-biased expression. This study reveals partly conserved sex chromosome synteny and independent evolution of dosage compensation among insect orders separated by several hundred million years of evolutionary history.</p>}},
author = {{Chauhan, Pallavi and Swaegers, Janne and Sánchez-Guillén, Rosa A. and Svensson, Erik I. and Wellenreuther, Maren and Hansson, Bengt}},
issn = {{0888-7543}},
keywords = {{Damselflies; Dosage compensation; Genome assembly; Ischnura elegans; Sex chromosomes}},
language = {{eng}},
month = {{07}},
number = {{4}},
pages = {{1828--1837}},
publisher = {{Academic Press}},
series = {{Genomics}},
title = {{Genome assembly, sex-biased gene expression and dosage compensation in the damselfly Ischnura elegans}},
url = {{http://dx.doi.org/10.1016/j.ygeno.2021.04.003}},
doi = {{10.1016/j.ygeno.2021.04.003}},
volume = {{113}},
year = {{2021}},
}