2020
DOI: 10.1093/molbev/msaa246
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Chromosome-Scale Genome Assemblies of Aphids Reveal Extensively Rearranged Autosomes and Long-Term Conservation of the X Chromosome

Abstract: Chromosome rearrangements are arguably the most dramatic type of mutations, often leading to rapid evolution and speciation. However, chromosome dynamics have only been studied at the sequence level in a small number of model systems. In insects, Diptera and Lepidoptera have conserved genome structure at the scale of whole chromosomes or chromosome arms. Whether this reflects the diversity of insect genome evolution is questionable given that many species exhibit rapid karyotype evolution. Here, we investigate… Show more

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Cited by 61 publications
(68 citation statements)
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References 154 publications
(320 reference statements)
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“…As we have commented in the introduction, the aphid X chromosomes show high structural stability [ 19 ]. This long-term stability is surprising, according to the authors, due to the low level of gene expression, low level of selection of X-linked genes and accumulation of TEs.…”
Section: Discussionmentioning
confidence: 99%
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“…As we have commented in the introduction, the aphid X chromosomes show high structural stability [ 19 ]. This long-term stability is surprising, according to the authors, due to the low level of gene expression, low level of selection of X-linked genes and accumulation of TEs.…”
Section: Discussionmentioning
confidence: 99%
“…It is debated whether the missing X chromosome is random or not [ 8 , 14 , 15 ]. The molecular mechanisms that induce the formation of sexual phenotypes, are still unknown [ 16 ], although multiple genes that are differentially expressed in males, in sexual females and in parthenogenetic females, have been studied [ 17 , 18 , 19 ]. It has been suggested that aphids have a high rate of evolution through chromosomal rearrangements processes [ 12 , 17 , 19 ].…”
Section: Introductionmentioning
confidence: 99%
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“…The mcscanx results were displayed with synvisio (https://kiran bandi.github.io/synvi sio/#/Dashb oard/ bn). The A. gossypii sex (X) chromosome was identified by comparing with the M. persicae and Acyrthosiphon pisum JIC1 genomes, as the X chromosome of these species had been previously determined (Mathers et al, 2020).…”
Section: Genome Synteny Analysismentioning
confidence: 99%