The roles of gene duplications in the dynamics of evolutionary conflicts

Castellanos, María del Pilar; Wickramasinghe, Chathuri Devmika; Betrán, Esther

doi:10.1098/rspb.2024.0555

Cited by 4 publications

(1 citation statement)

References 138 publications

(237 reference statements)

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“…Gene duplication could also facilitate conflict resolution if paralogues adopt sex-specific function ([ 67 , 68 ] and see [ 69 ]). In D. melanogaster and other taxa, sexual dimorphism may be facilitated by male-biased expression of duplicate genes (reviewed in [ 69 ]), which is likely driven by sexual selection in males. In addition, tandem duplicates in D. melanogaster apparently resolve conflict over fertility traits [ 70 ].…”

Section: Towards Resolutionmentioning

confidence: 99%

On the resolution of sexual conflict over shared traits

Pennell,

Mank,

Alonzo

et al. 2024

Proc. R. Soc. B.

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Anisogamy, different-sized male and female gametes, sits at the heart of sexual selection and conflict between the sexes. Sperm producers (males) and egg producers (females) of the same species generally share most, if not all, of the same genome, but selection frequently favours different trait values in each sex for traits common to both. The extent to which this conflict might be resolved, and the potential mechanisms by which this can occur, have been widely debated. Here, we summarize recent findings and emphasize that once the sexes evolve, sexual selection is ongoing, and therefore new conflict is always possible. In addition, sexual conflict is largely a multivariate problem, involving trait combinations underpinned by networks of interconnected genes. Although these complexities can hinder conflict resolution, they also provide multiple possible routes to decouple male and female phenotypes and permit sex-specific evolution. Finally, we highlight difficulty in the study of sexual conflict over shared traits and promising directions for future research.

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Section: Towards Resolutionmentioning

confidence: 99%

On the resolution of sexual conflict over shared traits

Pennell,

Mank,

Alonzo

et al. 2024

Proc. R. Soc. B.

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The structural role of Skp1 in the synaptonemal complex is conserved in nematodes

Kursel,

Goktepe,

Rog

2024

Genetics

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The synaptonemal complex (SC) is a meiotic interface that assembles between parental chromosomes and is essential for gamete formation. While the dimensions and ultrastructure of the SC are conserved across eukaryotes, its protein components are highly divergent. Recently, an unexpected component of the SC has been described in the nematode C. elegans: the Skp1-related proteins SKR-1/2, which are components of the Skp1, Cullin, F–box (SCF) ubiquitin ligase. Here, we find that the role of SKR-1 in the SC is conserved in P. pacificus. The P. pacificus Skp1 ortholog, Ppa-SKR-1, colocalizes with other SC proteins throughout meiotic prophase, where it occupies the middle of the SC. Like in C. elegans, the dimerization interface of Ppa-SKR-1 is required for its SC function. A dimerization mutant, ppa–skr-1F105E, fails to assemble SC and produces almost no progeny. Interestingly, the evolutionary trajectory of SKR-1 contrasts with other SC proteins. Unlike most SC proteins, SKR-1 is highly conserved in nematodes. Our results suggest that the structural role of SKR–1 in the SC has been conserved since the common ancestor of C. elegans and P. pacificus, and that rapidly evolving SC proteins have maintained the ability to interact with SKR-1 for at least 100 million years.

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The resolution of evolutionary conflicts within species

Ågren,

Arnqvist,

Rowe

2024

Proc. R. Soc. B.

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Evolutionary conflicts of interest occur at all levels, scales and forms of biological organization. They are a fundamental component of the living world and range from conflicts between genetic elements and cells, to conflicts between the sexes and between competing individuals. Yet, the existence of admirably well functioning genomes, bodies, mating pairs and societies suggests that processes must exist to resolve or mitigate such conflicts. We organized this special feature ‘The resolution of evolutionary conflicts within species’ to encourage the flow of knowledge between fields that traditionally have often taken different approaches to study evolutionary conflicts. Contributed papers discuss data from bacteria, plants and animals (including humans) and present theory, molecular mechanisms and population dynamics of how conflicts are resolved in nature. Together, they contribute to a synthetic theory of conflict resolution.

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The roles of gene duplications in the dynamics of evolutionary conflicts

Cited by 4 publications

References 138 publications

On the resolution of sexual conflict over shared traits

On the resolution of sexual conflict over shared traits

The structural role of Skp1 in the synaptonemal complex is conserved in nematodes

The resolution of evolutionary conflicts within species

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