Petr Nguyen
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View article: Project Psyche: Generating and utilising reference genomes for all Lepidoptera in Europe
Project Psyche: Generating and utilising reference genomes for all Lepidoptera in Europe Open
Project Psyche is a trans-national initiative to generate and study chromosome-level reference genomes of all ca. 11,000 described species of Lepidoptera (butterflies and moths) found in Europe. The Project Psyche community encompasses div…
View article: Polyommatine Blue Butterflies Reveal Unexpected Integrity of the W Sex Chromosome Amid Extensive Chromosomal Fragmentation Linked to Telomere Restoration
Polyommatine Blue Butterflies Reveal Unexpected Integrity of the W Sex Chromosome Amid Extensive Chromosomal Fragmentation Linked to Telomere Restoration Open
Chromosomal rearrangements act as barriers to gene flow and can thus promote speciation. In moths and butterflies (Lepidoptera), which possess holocentric chromosomes facilitating karyotype changes, chromosome fusions are more common than …
View article: Multiple Origins of Sex Chromosomes in <i>Nothobranchius</i> Killifishes
Multiple Origins of Sex Chromosomes in <i>Nothobranchius</i> Killifishes Open
Sex chromosomes have evolved repeatedly across eukaryotes. The emergence of a sex‐determining (SD) locus is expected to progressively restrict recombination, driving convergent molecular differentiation. However, evidence from taxa like te…
View article: Effects of hybridization on chemical diversity and plant–insect herbivore interactions in <i>Salix alba×fragilis</i>
Effects of hybridization on chemical diversity and plant–insect herbivore interactions in <i>Salix alba×fragilis</i> Open
Hybridization can create novel chemical traits and enhance plant adaptability to diverse environments. This study examined the effects of hybridization on chemical diversity and ecological interactions in Salix alba×fragilis hybrids from t…
View article: Hierarchical architecture of neo-sex chromosomes and accelerated adaptive evolution in tortricid moths
Hierarchical architecture of neo-sex chromosomes and accelerated adaptive evolution in tortricid moths Open
Sex chromosomes can expand through fusion with autosomes, thereby acquiring unique evolutionary patterns. In butterflies and moths (Lepidoptera), these sex chromosome–autosome (SA) fusions occur relatively frequently, suggesting possible e…
View article: Polyommatine blue butterflies reveal unexpected integrity of the W sex chromosome amid extensive chromosome fragmentation
Polyommatine blue butterflies reveal unexpected integrity of the W sex chromosome amid extensive chromosome fragmentation Open
Chromosomal rearrangements are crucial in speciation, acting as barriers to gene flow. Holocentric chromosomes, such as those in Lepidoptera, can facilitate karyotype changes. Despite chromosome fusions being more common, speciation events…
View article: Sex chromosome turnover in African annual killifishes of the genus Nothobranchius
Sex chromosome turnover in African annual killifishes of the genus Nothobranchius Open
Sex chromosomes of teleost fishes often have low levels of differentiation and undergo frequent turnovers. Annual Nothobranchius killifishes comprise representatives with male-heterogametic XY or X1X2Y sex chromosome systems, scattered acr…
View article: Sex‐biased gene content is associated with sex chromosome turnover in Danaini butterflies
Sex‐biased gene content is associated with sex chromosome turnover in Danaini butterflies Open
Sex chromosomes play an outsized role in adaptation and speciation, and thus deserve particular attention in evolutionary genomics. In particular, fusions between sex chromosomes and autosomes can produce neo‐sex chromosomes, which offer i…
View article: Fast satellite DNA evolution in Nothobranchius annual killifishes
Fast satellite DNA evolution in Nothobranchius annual killifishes Open
Satellite DNA (satDNA) is a rapidly evolving class of tandem repeats, with some monomers being involved in centromere organization and function. To identify repeats associated with (peri)centromeric regions, we investigated satDNA across S…
View article: Formation of hemiclonal reproduction and hybridogenesis in<i>Pelophylax water</i>frogs studied with species-specific cytogenomic probes
Formation of hemiclonal reproduction and hybridogenesis in<i>Pelophylax water</i>frogs studied with species-specific cytogenomic probes Open
Meiosis is a conservative process in all sexual organisms which ensures fertility and is central for producing genetic diversity by recombination and random segregation of parental chromosomes. Yet unexplored mechanisms may disrupt it and …
View article: Ghost W chromosomes and unique genome architecture in ghost moths of the family Hepialidae
Ghost W chromosomes and unique genome architecture in ghost moths of the family Hepialidae Open
The classical model of sex chromosome evolution has been recently challenged in moths and butterflies (Lepidoptera). According to the current hypothesis, the adoption of a supernumerary chromosome may have driven the transition from the Z0…
View article: Holocentric repeat landscapes: From micro‐evolutionary patterns to macro‐evolutionary associations with karyotype evolution
Holocentric repeat landscapes: From micro‐evolutionary patterns to macro‐evolutionary associations with karyotype evolution Open
Repetitive elements can cause large‐scale chromosomal rearrangements, for example through ectopic recombination, potentially promoting reproductive isolation and speciation. Species with holocentric chromosomes, that lack a localized centr…
View article: Repetitive elements of Erebia and Carex and their genomic proportions
Repetitive elements of Erebia and Carex and their genomic proportions Open
Datasets of repetitive elements in the genomes of Erebia and Carex, detected and annotated using RepeatExplorer2 (Novák et al., 2010, 2020) using low-coverage (0.1X) short read sequencing data. Data from the article "Holo…
View article: Repetitive elements of Erebia and Carex and their genomic proportions
Repetitive elements of Erebia and Carex and their genomic proportions Open
Datasets of repetitive elements in the genomes of Erebia and Carex, detected and annotated using RepeatExplorer2 (Novák et al., 2010, 2020) using low-coverage (0.1X) short read sequencing data. Data from the article "Holo…
View article: Multiple sex chromosomes of<i>Yponomeuta</i>ermine moths suggest a role of sexual antagonism in sex chromosome turnover in Lepidoptera
Multiple sex chromosomes of<i>Yponomeuta</i>ermine moths suggest a role of sexual antagonism in sex chromosome turnover in Lepidoptera Open
Sex chromosome-autosome fusions give rise to neo-sex chromosomes, which provide an insight into early evolution of sex chromosomes and drivers of chromosomal fusions. While sex chromosome-autosome fusions are scarce in vertebrates with fem…
View article: The Role of Repetitive Sequences in Repatterning of Major Ribosomal DNA Clusters in Lepidoptera
The Role of Repetitive Sequences in Repatterning of Major Ribosomal DNA Clusters in Lepidoptera Open
Genes for major ribosomal RNAs (rDNA) are present in multiple copies mainly organized in tandem arrays. The number and position of rDNA loci can change dynamically and their repatterning is presumably driven by other repetitive sequences. …
View article: Fast centromeric repeat turnover provides a glimpse into satellite DNA evolution in Nothobranchius annual killifishes
Fast centromeric repeat turnover provides a glimpse into satellite DNA evolution in Nothobranchius annual killifishes Open
Satellite DNA (satDNA) is rapidly evolving class of tandem repeats with some motifs being involved in centromere organization and function. Rapid co-evolution of centromeric satDNA and associated proteins has been mostly attributed to the …
View article: Genome sequence and silkomics of the spindle ermine moth, Yponomeuta cagnagella, representing the early diverging lineage of the ditrysian Lepidoptera
Genome sequence and silkomics of the spindle ermine moth, Yponomeuta cagnagella, representing the early diverging lineage of the ditrysian Lepidoptera Open
View article: Sex chromosome differentiation via changes in the Y chromosome repeat landscape in African annual killifishes Nothobranchius furzeri and N. kadleci
Sex chromosome differentiation via changes in the Y chromosome repeat landscape in African annual killifishes Nothobranchius furzeri and N. kadleci Open
Homomorphic sex chromosomes and their turnover are common in teleosts. We investigated the evolution of nascent sex chromosomes in several populations of two sister species of African annual killifishes, Nothobranchius furzeri and N. kadle…
View article: The role of repetitive DNA in re-patterning of major rDNA clusters in Lepidoptera
The role of repetitive DNA in re-patterning of major rDNA clusters in Lepidoptera Open
Genes for major ribosomal RNAs (rDNA) are present in multiple copies organized in tandem arrays. Number and position of rDNA loci can change dynamically and their re-patterning is presumably driven by repetitive sequences. We explored a pe…
View article: Sex chromosome differentiation via changes in the Y chromosome repeat landscape in African annual killifishes <i>Nothobranchius furzeri</i> and <i>N. kadleci</i>
Sex chromosome differentiation via changes in the Y chromosome repeat landscape in African annual killifishes <i>Nothobranchius furzeri</i> and <i>N. kadleci</i> Open
Repetitive DNA represents an important driver of sex chromosome differentiation. Yet, repetitive sequences tend to be misrepresented or overlooked in genomic studies. We analysed repetitive DNA landscape of sex chromosomes in several popul…
View article: Correction to: A haplotype-resolved, de novo genome assembly for the wood tiger moth (<i>Arctia plantaginis</i>) through trio binning
Correction to: A haplotype-resolved, de novo genome assembly for the wood tiger moth (<i>Arctia plantaginis</i>) through trio binning Open
View article: A conserved role of the duplicated Masculinizer gene in sex determination of the Mediterranean flour moth, Ephestia kuehniella
A conserved role of the duplicated Masculinizer gene in sex determination of the Mediterranean flour moth, Ephestia kuehniella Open
Sex determination in the silkworm, Bombyx mori , is based on Feminizer ( Fem ), a W-linked Fem piRNA that triggers female development in WZ individuals, and the Z-linked Masculinizer ( Masc ), which initiates male development and dosage co…
View article: Multiple sex chromosomes in teleost fishes from a cytogenetic perspective: state of the art and future challenges
Multiple sex chromosomes in teleost fishes from a cytogenetic perspective: state of the art and future challenges Open
Despite decades of cytogenetic and genomic research of dynamic sex chromosome evolution in teleost fishes, multiple sex chromosomes have been largely neglected. In this review, we compiled available data on teleost multiple sex chromosomes…
View article: Large-scale comparative analysis of cytogenetic markers across Lepidoptera
Large-scale comparative analysis of cytogenetic markers across Lepidoptera Open
View article: Correction to: Evolutionary pattern of karyotypes and meiosis in pholcid spiders (Araneae: Pholcidae): implications for reconstructing chromosome evolution of araneomorph spiders
Correction to: Evolutionary pattern of karyotypes and meiosis in pholcid spiders (Araneae: Pholcidae): implications for reconstructing chromosome evolution of araneomorph spiders Open
An amendment to this paper has been published and can be accessed via the original article.
View article: Evolutionary pattern of karyotypes and meiosis in pholcid spiders (Araneae: Pholcidae): implications for reconstructing chromosome evolution of araneomorph spiders
Evolutionary pattern of karyotypes and meiosis in pholcid spiders (Araneae: Pholcidae): implications for reconstructing chromosome evolution of araneomorph spiders Open
Background Despite progress in genomic analysis of spiders, their chromosome evolution is not satisfactorily understood. Most information on spider chromosomes concerns the most diversified clade, entelegyne araneomorphs. Other clades are …
View article: A conserved role of the duplicated<i>Masculinizer</i>gene in sex determination of the Mediterranean flour moth,<i>Ephestia kuehniella</i>
A conserved role of the duplicated<i>Masculinizer</i>gene in sex determination of the Mediterranean flour moth,<i>Ephestia kuehniella</i> Open
Sex determination in the silkworm, Bombyx mori , is based on Feminizer ( Fem ), a W-linked Fem piRNA that triggers female development in WZ individuals, and the Z-linked Masculinizer ( Masc ), which initiates male development and dosage co…
View article: Supplementary File – Table S1. A comprehensive overview on fish multiple sex chromosomes and synthesis of available related information. from Multiple sex chromosomes in teleost fishes from a cytogenetic perspective: state of the art and future challenges
Supplementary File – Table S1. A comprehensive overview on fish multiple sex chromosomes and synthesis of available related information. from Multiple sex chromosomes in teleost fishes from a cytogenetic perspective: state of the art and future challenges Open
A comprehensive overview on fish multiple sex chromosomes and synthesis of available related information. Species order reflects their phylogenetic relationships (Betancur R et al. 2017). The taxonomy and inferences about current species n…
View article: Additional file 1 of Evolutionary pattern of karyotypes and meiosis in pholcid spiders (Araneae: Pholcidae): implications for reconstructing chromosome evolution of araneomorph spiders
Additional file 1 of Evolutionary pattern of karyotypes and meiosis in pholcid spiders (Araneae: Pholcidae): implications for reconstructing chromosome evolution of araneomorph spiders Open
Additional file 1: Table S1. Species under study, male karyotype data (including standard deviation). Abbreviations: EX = product of event X (X = number of event), phase = phase of mitotic/meiotic division used to obtain data on chromosome…