E. B. Josephs

Herbarium specimens reveal links between Capsella bursa-pastoris leaf shape and climate

This study uses geometric morphometric modeling to show that Capsella bursa-pastoris leaf shape variation is strongly linked to temperature, with no change in variation over 100 years.

Local adaptation contributes to gene expression divergence in maize

This study identifies genes under local adaptation in maize by comparing gene expression divergence across populations and tissues, finding enrichment for stress-response genes.

The evolutionary forces shaping cis and trans regulation of gene expression within a population of outcrossing plants.

The paper identifies trans-eQTLs in Capsella grandiflora and finds they are under stronger negative selection than cis-eQTLs, though some trans-eQTLs persist at intermediate frequencies.

Detecting adaptive differentiation in structured populations with genomic data and common gardens

The paper develops methods to detect polygenic adaptation using genomic data and common garden trait measurements in structured populations, applying them to maize lines and landraces.

Transposable elements are important contributors to standing variation in gene expression in Capsella grandiflora

This study shows that transposable elements (TEs) significantly contribute to gene expression variation in Capsella grandiflora, with rare TE variants predominantly causing downregulation, more so than rare SNPs.