John R. Pannell

The evolutionary interplay between self-fertilisation and sex allocation in flowering plants

This paper models the joint evolution of sex allocation and selfing rate in flowering plants, showing their strong interdependence and potential for androdioecy.

Geographical gradients in leaky sex expression and reproductive effort in a dioecious plant are consistent with selection during range expansion

This study shows that range-edge populations of the dioecious plant Mercurialis annua exhibit leaky sex expression and higher reproductive effort, suggesting selection for reproductive assurance during range expansion.

The evolution of condition-dependent self-fertilisation

This study shows condition-dependent selfing generates within-population variation in selfing rates and contributes to mating-system diversity.

Evolution of recombination suppression and sex determination on Y chromosomes of the plant genus Mercurialis

The paper studies Y chromosome evolution in Mercurialis annua, identifying two recombination suppression stages and a candidate master sex-determination gene.

An angiosperm-wide perspective on reproductive strategiesand floral traits

The paper analyzes floral and reproductive traits across 361 flowering plant species to show that dioecy is linked to floral traits, while correlations with lifespan and dispersal are spurious.

Sex-allocation trade-offs and their genetic architecture revealed by experimental evolution

This study uses experimental evolution to show a genetic trade-off in sex allocation in hermaphroditic plants, supporting the fundamental assumption of sex-allocation theory.

Dioecy in a wind-pollinated herb explained by disruptive selection on sex allocation

The paper tests the inbreeding avoidance hypothesis for dioecy evolution in Mercurialis annua using experimental evolution and shows disruptive selection on sex allocation due to inbreeding depression.

Mapping fitness landscapes to interpret sex allocation in hermaphrodites

The paper maps fitness landscapes to analyze sex allocation in hermaphrodites, finding that reproductive success peaks result from interactions between male and female allocations and inbreeding depression.

Replication of treatment effects and differences among populations during experimental evolution of sex allocation in an annual plant

This study replicates a previous experiment on sex allocation in Mercurialis annua, finding consistent population-level differences that suggest non-random variation rather than experimental noise.

Widespread male sterility and trioecy in androdioecious Mercurialis annua: an account of its distribution, its genetic basis, and estimates of its morph-specific fitness components

This study documents trioecy in Mercurialis annua, identifies its genetic basis, and estimates fitness components of different sexes.

The joint evolution of separate sexes and sexual dimorphism

This paper shows that sexual conflict in hermaphroditic plants drives the evolution of separate sexes and sexual dimorphism, but ecological factors can maintain hermaphroditism.

Effects of floral sex allocation and phenology on the within-flower selfing rate and female reproductive success in Pulsatilla alpina, a perennial herb with strong inbreeding depression

The paper measures within-flower selfing rates and inbreeding depression in Pulsatilla alpina, showing their dependence on floral traits and phenology, and how they affect selection on those traits.

Inferring the demographic history of tetraploid species from genomic data

This paper provides a statistical framework using approximate Bayesian computation to infer demographic history in tetraploid species, accounting for complexities introduced by polyploidization and gene flow.

Early sex-chromosome evolution in the diploid dioecious plant Mercurialis annua

This study identifies the sex chromosome in Mercurialis annua using genomic and transcriptomic data, revealing suppressed recombination and X/Y sequence divergence without extensive Y-chromosome degeneration.

Investigating speciation in face of polyploidization: what can we learn from approximate Bayesian computation approach?

This study uses approximate Bayesian computation to infer the evolutionary history of polyploid species using sequence data, finding it effective for determining polyploid origin and demographic parameters.