Subtle Introgression Footprints at the End of the Speciation Continuum in a Clade of Heliconius Butterflies DOI Creative Commons
Quentin Rougemont, Bárbara Huber, Simon H. Martin

и другие.

Molecular Biology and Evolution, Год журнала: 2023, Номер 40(7)

Опубликована: Июль 1, 2023

Abstract Quantifying gene flow between lineages at different stages of the speciation continuum is central to understanding speciation. Heliconius butterflies have undergone an adaptive radiation in wing color patterns driven partly by natural selection for local mimicry. Color are also known be used as assortative mating cues. Therefore, pattern divergence considered play a role A corollary that mimicry closely related species may associated with hybridization and interfere reproductive isolation. Here, we take multifaceted approach explore history, boundaries, traits involved differentiation two species, hecale ismenius. We focus on geographic regions where mimic each other contrast this they do not other. To examine population history flow, tested compared four-population model accounting linked selection. This suggests remained isolated large part their yet small amount exchange. Accordingly, signatures genomic introgression were except major allele chemosensing genes stronger mimetic populations nonmimetic populations. Behavioral assays confirm visual confusion exists but short-range cues determine strong sexual Tests chemical identified differences putative pheromones which likely mediate mate choice maintenance differences.

Язык: Английский

A butterfly pan-genome reveals that a large amount of structural variation underlies the evolution of chromatin accessibility DOI Creative Commons
Angelo Alberto Ruggieri, Luca Livraghi, James J. Lewis

и другие.

Genome Research, Год журнала: 2022, Номер 32(10), С. 1862 - 1875

Опубликована: Сен. 15, 2022

Despite insertions and deletions being the most common structural variants (SVs) found across genomes, not much is known about how these SVs vary within populations between closely related species, nor their significance in evolution. To address questions, we characterized evolution of indel using genome assemblies three

Язык: Английский

Процитировано

20
TheivorylncRNA regulates seasonal color patterns in buckeye butterflies DOI Creative Commons
Richard A. Fandino, Noah K. Brady, Martik Chatterjee

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Фев. 12, 2024

Abstract Long non-coding RNAs (lncRNAs) are transcribed elements increasingly recognized for their roles in regulating gene expression. Thus far, however, we have little understanding of how lncRNAs contribute to evolution and adaptation. Here show that a conserved lncRNA, ivory , is an important color patterning the buckeye butterfly Junonia coenia . overlaps with cortex locus linked multiple cases crypsis mimicry Lepidoptera. Along companion paper by Livraghi et. al., argue not pattern interest at this locus. In J. cluster cis -regulatory (CREs) first intron genetically associated natural variation seasonal plasticity, targeted deletions these CREs phenocopy phenotypes. Deletions different produce other distinct phenotypes as well, including loss melanic eyespot rings, positive negative changes overall wing pigmentation. We transcription factors Spineless, Bric-a-brac, Ftz-f1 bind promoter during development, suggesting they directly regulate This case study demonstrates -regulation single RNA can exert diverse nuanced effects on development patterns, modulating seasonally plastic patterns. Significance The genomic hosting has been numerous adaptation moths butterflies, crypsis, mimicry, polyphenism. butterflies actual evolutionarily long (lncRNA), dubbed Compared genes, stands out because highly nuanced, quantitative pigmentation be achieved manipulating adjacent sequences. highlights underlying morphological evolution, emphasizes importance considering transcripts comparative genomics.

Язык: Английский

Процитировано

5
Exploring the patterns of evolution: Core thoughts and focus on the saltational model DOI
Gabriele Usai, Marco Fambrini, Claudio Pugliesi

и другие.

Biosystems, Год журнала: 2024, Номер 238, С. 105181 - 105181

Опубликована: Март 11, 2024

Язык: Английский

Процитировано

5
The molecular basis of phenotypic evolution: beyond the usual suspects DOI
Rong‐Chien Lin,

Bianca T Ferreira,

Yao‐Wu Yuan

и другие.

Trends in Genetics, Год журнала: 2024, Номер unknown

Опубликована: Май 1, 2024

Язык: Английский

Процитировано

5
The ivory lncRNA regulates seasonal color patterns in buckeye butterflies DOI Creative Commons
Richard A. Fandino, Noah K. Brady, Martik Chatterjee

и другие.

Proceedings of the National Academy of Sciences, Год журнала: 2024, Номер 121(41)

Опубликована: Окт. 1, 2024

Long noncoding RNAs (lncRNAs) are transcribed elements increasingly recognized for their roles in regulating gene expression. Thus far, however, we have little understanding of how lncRNAs contribute to evolution and adaptation. Here, show that a conserved lncRNA, ivory , is an important color patterning the buckeye butterfly Junonia coenia . overlaps with cortex locus linked multiple cases crypsis mimicry Lepidoptera. Along companion paper by Livraghi et al., argue not pattern interest at this locus. In J. cluster cis -regulatory (CREs) first intron genetically associated natural variation seasonal plasticity, targeted deletions these CREs phenocopy phenotypes. Deletions different produce other distinct phenotypes as well, including loss melanic eyespot rings, positive negative changes overall wing pigmentation. We transcription factors Spineless, Bric-a-brac, Ftz-f1 bind promoter during development, suggesting they directly regulate This case study demonstrates -regulation single RNA can exert diverse nuanced effects on development patterns, modulating seasonally plastic patterns.

Язык: Английский

Процитировано

5
A microRNA is the effector gene of a classic evolutionary hotspot locus DOI
Shen Tian, Yoshimasa Asano, Tirtha Das Banerjee

и другие.

Science, Год журнала: 2024, Номер 386(6726), С. 1135 - 1141

Опубликована: Дек. 5, 2024

In Lepidoptera (butterflies and moths), the genomic region around gene cortex is a “hotspot” locus, repeatedly implicated in generating intraspecific melanic wing color polymorphisms across 100 million years of evolution. However, identity effector regulating within this locus remains unknown. We show that none four candidate protein-coding genes including , serve as major effectors. Instead, microRNA (miRNA), mir-193 serves three deeply diverged lineages butterflies, its role conserved Drosophila . Lepidoptera, derived from gigantic primary long noncoding RNA, ivory it functions by directly repressing multiple pigmentation genes. miRNA can drive repeated instances adaptive evolution animals.

Язык: Английский

Процитировано

5
Oca2targeting using CRISPR/Cas9 in the Malawi cichlidAstatotilapia calliptera DOI Creative Commons
Bethan Clark, Joel Elkin, Aleksandra Marconi

и другие.

Royal Society Open Science, Год журнала: 2022, Номер 9(4)

Опубликована: Апрель 1, 2022

Identifying genetic loci underlying trait variation provides insights into the mechanisms of diversification, but demonstrating causality and characterizing role requires testing candidate gene function, often in non-model species. Here we establish CRISPR/Cas9 editing Astatotilapia calliptera, a generalist cichlid remarkably diverse Lake Malawi radiation. By targeting oca2 required for melanin synthesis other vertebrate species, show efficient germline transmission. Gene edits include indels coding region, probably result non-homologous end joining, large deletion 3' untranslated region due to homology-directed repair. We find that knock-out A. calliptera lack melanin, which may be useful developmental imaging embryos studying colour pattern formation adults. As resembles presumed ancestor cichlids radiation, establishing genome this species will facilitate investigating speciation, adaptation diversification textbook

Язык: Английский

Процитировано

17
The genetic basis of structural colour variation in mimetic Heliconius butterflies DOI Creative Commons
Melanie N. Brien, Juan Enciso‐Romero, Victoria J. Lloyd

и другие.

Philosophical Transactions of the Royal Society B Biological Sciences, Год журнала: 2022, Номер 377(1855)

Опубликована: Май 30, 2022

Structural colours, produced by the reflection of light from ultrastructures, have evolved multiple times in butterflies. Unlike pigmentary colours and patterns, little is known about genetic basis these colours. Reflective structures on wing-scale ridges are responsible for iridescent structural colour many butterflies, including Müllerian mimics Heliconius erato melpomene. Here, we quantify aspects scale ultrastructure variation crosses between non-iridescent subspecies both species perform quantitative trait locus (QTL) mapping. We show that has a complex species, with offspring having wide blue (both hue brightness) structure measurements. detect two different genomic regions each explain modest amounts this variation, sex-linked QTL H. but not also find differences relationships colour, overall suggesting followed evolutionary trajectories their evolution colour. then identify genes within intervals differentially expressed and/or wing regions, revealing likely candidates controlling formation. This article part theme issue 'Genetic adaptation speciation: loci to causative mutations'.

Язык: Английский

Процитировано

16
Transposable Element Insertions Are Associated with Batesian Mimicry in the Pantropical Butterfly Hypolimnas misippus DOI Creative Commons
Anna Orteu, Marek Kučka, I. Gordon

и другие.

Molecular Biology and Evolution, Год журнала: 2024, Номер 41(3)

Опубликована: Фев. 23, 2024

Hypolimnas misippus is a Batesian mimic of the toxic African Queen butterfly (Danaus chrysippus). Female H. butterflies use two major wing patterning loci (M and A) to imitate three color morphs D. chrysippus found in different regions Africa. In this study, we examine evolution M locus identify it as an example adaptive atavism. This phenomenon involves morphological reversion ancestral character that results phenotype. We show has re-evolved pattern present other species, repurposing for mimicry morph. Using haplotagging, linked-read sequencing technology, our new analytical tool, Wrath, discover large transposable element insertions located at establish these are dominant allele responsible producing mimetic By conducting comparative analysis involving additional demonstrate derived. suggests that, derived allele, elements disrupt cis-regulatory element, leading phenotype then utilized distinct model, morph chrysippus. Our findings compelling instance convergent atavism, which same independently evolved multiple times butterflies, repeatedly playing role diverse model species.

Язык: Английский

Процитировано

3
Optix regulates nanomorphology of butterfly scales primarily via its effects on pigmentation DOI Creative Commons
Tirtha Das Banerjee,

Cédric Finet,

Kwi Shan Seah

и другие.

Frontiers in Ecology and Evolution, Год журнала: 2024, Номер 12

Опубликована: Май 1, 2024

Previous studies have shown that Optix regulates lower lamina thickness and the type of pigment is produced in wing scales a few butterfly species. However, role regulating production across species, additional aspects scale morphology remains to be investigated. By combining microspectrophotometry, scanning electron microscopy, focused ion beam technology on wild-type Bicyclus anynana crispants, we show orange pigments (ommochromes), represses brown (melanins), upper surface scales. Our findings suggest conserved as switch gene activates ommochrome melanin synthesis butterflies. comparing these effects with other mutations, where only removed from scales, propose pigmentary changes, alone, affect way chitin polymerizes within scale, changing well multiple intricate structures surface.

Язык: Английский

Процитировано

3