Jason P. Sexton

Regional gene-environment association models improve insights into agents and targets of selection by climate in Mimulus guttatus

This study shows that regional gene-environment association models provide more informative insights into climate adaptation agents and targets than range-wide models in Mimulus guttatus.

Resurrected in the field: benefits of rapid adaptation to historic drought seen mainly at the leading edge of a plant' species range

This study shows that drought-adapted plants have higher fitness at the leading edge of their range but lower fitness at lower elevations, suggesting potential range contraction under climate change.

Biotic niche expansion constrains the fundamental abiotic niche: Evidence from experimental evolution

This study shows that expanding a species' biotic niche through experimental evolution reduces its abiotic niche tolerance, supporting the 'Jack-of-all-trades is master of none' hypothesis.

Phenotypic plasticity evolved for climate variability constrains performance under climate warming

The paper examines how phenotypic plasticity in Populus species affects fitness under climate warming, finding that higher plasticity is maladaptive in warmer environments.

Greater benefits of assisted gene flow in F2 vs F1 progeny at the cold edge of a species' range

The paper shows that gene flow benefits F2 progeny more than F1 in a plant species at its cold range edge, suggesting long-term fitness advantages from hybridization.

Variation in responses to temperature in admixed Populus genotypes predicts geographic shifts in regions where hybrids are favored

The paper predicts geographic shifts in hybrid Populus zones based on temperature response variation in admixed genotypes.

Evolutionary responses to historic drought across the range of scarlet monkeyflower

The study evaluates evolutionary responses to historic drought in scarlet monkeyflower populations across their range using a resurrection experiment and common gardens.

Climatic determinants of plant phenology in vernal pool habitats

This study quantifies how climate variation affects floral phenology in two vernal pool plants, finding advanced phenology and reduced occupancy under warmer, drier conditions.