Evidence of a neo-sex chromosome in birds

Pala, Irene; Naurin, Sara; Stervander, Martin; Hasselquist, Dennis; Bensch, Staffan; Hansson, Bengt

doi:10.1038/hdy.2011.70

Cited by 108 publications

(119 citation statements)

References 43 publications

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“…It has recently been suggested that gene content might be relevant for maintenance of neo-sex chromosomes (40). The Ace-1 and ABCC2 genes belong to insect carboxylesterase and ATP-binding cassette (ABC) transporter gene families, whose members are involved in metabolism and regulated absorption of both insecticides and plant secondary metabolites, respectively (41)(42)(43)(44).…”

Section: Discussionmentioning

confidence: 99%

Neo-sex chromosomes and adaptive potential in tortricid pests

Nguyen

Sýkorová

Šíchová

et al. 2013

Proc. Natl. Acad. Sci. U.S.A.

114

133

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Changes in genome architecture often have a significant effect on ecological specialization and speciation. This effect may be further enhanced by involvement of sex chromosomes playing a disproportionate role in reproductive isolation. We have physically mapped the Z chromosome of the major pome fruit pest, the codling moth, Cydia pomonella (Tortricidae), and show that it arose by fusion between an ancestral Z chromosome and an autosome corresponding to chromosome 15 in the Bombyx mori reference genome. We further show that the fusion originated in a common ancestor of the main tortricid subfamilies, Olethreutinae and Tortricinae, comprising almost 700 pest species worldwide. The Z-autosome fusion brought two major genes conferring insecticide resistance and clusters of genes involved in detoxification of plant secondary metabolites under sex-linked inheritance. We suggest that this fusion significantly increased the adaptive potential of tortricid moths and thus contributed to their radiation and subsequent speciation.adaptive evolution | leaf-rollers | performance genes | sex chromosome-autosome fusion | sex-linkage

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Section: Discussionmentioning

confidence: 99%

Neo-sex chromosomes and adaptive potential in tortricid pests

Nguyen

Sýkorová

Šíchová

et al. 2013

Proc. Natl. Acad. Sci. U.S.A.

114

133

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“…It is possible that autosomes that bear a suite of such genes are preferentially recruited to a role in sex determination (Bachtrog et al 2011). Pala et al (2011) report a rare case of autosomal fission and fusion with both Z and W sex chromosomes in warblers and their allies (Sylvioidea). The neo-sex chromosome was formed by fusion of the distal end of the ancestral Z and part of chromosome 4a.…”

Section: The Chicken Z and Sex Determinationmentioning

confidence: 99%

“…The neo-sex chromosome was formed by fusion of the distal end of the ancestral Z and part of chromosome 4a. This 42-Ma-old rearrangement may have been favored because it brings one or more genes with sex-biased functions (e.g., androgen receptor, AR) into linkage with the male determining gene DMRT1 (Pala et al 2011).…”

Section: The Chicken Z and Sex Determinationmentioning

confidence: 99%

Are some chromosomes particularly good at sex? Insights from amniotes

et al. 2012

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Several recent studies have produced comparative maps of genes on amniote sex chromosomes, revealing homology of gene content and arrangement across lineages as divergent as mammals and lizards. For example, the chicken Z chromosome, which shares homology with the sex chromosomes of all birds, monotremes, and a gecko, is a striking example of stability of genome organization and retention, or independent acquisition, of function in sex determination. In other lineages, such as snakes and therian mammals, well conserved but independently evolved sex chromosome systems have arisen. Among lizards, novel sex chromosomes appear frequently, even in congeneric species. Here, we review recent gene mapping data, examine the evolutionary relationships of amniote sex chromosomes and argue that gene content can predispose some chromosomes to a specialized role in sex determination.

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“…В отличие от XYхромосом млекопитающих, которые могут подвергаться значительным модификациям (утрата рекомбинации и полный асинапсис в мейозе (Borodin et al, 2012), добавление новых фрагментов аутосом (Zhou et al, 2008), утеря Yхромосомы (Kolomiets et al, 1991 Синапсис и рекомбинация аутосом и половых хромосом у двух видов крачек (Sternidae, Charadriiformes, Aves) них аутосомного материала (Pala et al, 2012). Однако от носительно малое число видов птиц, у которых строение Z и Wхромосом изучено современными методами, не позволяет детально описать разнообразие и эволюцию половых хромосом в различных отрядах и семействах.…”

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Synapsis and recombination of autosomes and sex chromosomes in two terns (Sternidae, Charadriiformes, Aves)

Lisachov¹,

Malinovskaya²,

Druzyaka³

et al. 2017

Vestn. VOGiS

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The frequency of recombination and the patterns of crossover site distribution along the chromosomes vary considerably among animal species, including closely related species. Several hypotheses concerning the adaptive value and evolution of these variations were proposed. It was supposed that the recombination patterns of the species' genomes are influenced by their phylogenetic history and ecology. However, most original data were obtained from mammals. The mammals show high karyological variability, which strongly influences the recombination patterns. Therefore it is important to study recombination rate and distribution in more karyologically stable taxa, such as reptiles and birds. We used immunolocalization of SYCP3, the protein of the lateral element of the synaptonemal complex (SC), centromere proteins and the mismatch-repair protein MLH1, which is associated with the recombination nodules, at the synaptonemal complex spreads of prophase oocytes of two tern species, black tern (Chlidonias niger) and common tern (Sterna hirundo). We first described the karyotype of Ch. niger (2n = 74, FN= 94) and identified suggestive rearrangements by which its karyotype differs from that of S. hirundo (2n = 68, FN = 90). We found that these species significantly differed by the numbers of the MLH1 foci per cell (Ch. niger: 53.0 ± 4.2; S. hirundo: 44.1 ± 5.0). We showed that the difference in the crossover numbers per cell was determined by the difference in the SC length (total and of individual bivalents) and by chromosomal rearrangements, which also influenced the distributions of crossover sites along the chromosomes. The difference in recombination patterns was higher between the rearranged homeologues than between the non-rearranged ones. We investigated the synaptic patterns of the heteromor-Интенсивность мейотической рекомбинации и закономерности распределения точек кроссинговера вдоль хромосом значительно варьируют между видами животных, в том числе близкородствен-ными. Предложено несколько гипотез об адаптивном значении этих различий и их эволюции. Высказаны предположения о том, что рекомбинационные характеристики видов обусловлены фило-генетической историей видов и их экологией. Однако большая часть исходных данных получена на млекопитающих, у которых характеристики рекомбинации находятся под влиянием значи-тельной кариологической изменчивости. В этой связи изучение характеристик рекомбинации у таксонов с более стабильными карио типами, таких как рептилии и птицы, представляется акту-альным. В данной работе использовали метод флуоресцентной иммунолокализации белка бокового элемента синаптонемного комплекса (SYCP3), белков центромеры и белка мисматч-репара-ции MLH1, маркирующего сайты кроссинговера, на препаратах распластанных профазных ооцитов для изучения особенностей синапсиса и рекомбинации у двух видов птиц -черной крачки (Chlidonias niger) и речной крачки (Sterna hirundo). Мы впервые охарактеризовали кариотип Ch. niger (2n = 74, FN = 94), уточнили описание кариотипа S. hirundo (2n = 68, FN = 90) и иденти...

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Evidence of a neo-sex chromosome in birds

Cited by 108 publications

References 43 publications

Neo-sex chromosomes and adaptive potential in tortricid pests

Neo-sex chromosomes and adaptive potential in tortricid pests

Are some chromosomes particularly good at sex? Insights from amniotes

Synapsis and recombination of autosomes and sex chromosomes in two terns (Sternidae, Charadriiformes, Aves)

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