Data from: Relaxation of herbivore-mediated selection drives the evolution of genetic covariances between plant competitive and defense traits
Uesugi, Akane, Monash University
Connallon, Tim, Monash University
Kessler, Andre, Cornell University
Monro, Keyne, Monash University
Published Apr 10, 2017 on Dryad.
Cite this dataset
Uesugi, Akane; Connallon, Tim; Kessler, Andre; Monro, Keyne (2017). Data from: Relaxation of herbivore-mediated selection drives the evolution of genetic covariances between plant competitive and defense traits [Dataset]. Dryad. https://doi.org/10.5061/dryad.1j4f2
Insect herbivores are important mediators of selection on traits that impact plant defense against herbivory and competitive ability. Although recent experiments demonstrate a central role for herbivory in driving rapid evolution of defense and competition-mediating traits, whether and how herbivory shapes heritable variation in these traits remains poorly understood. Here, we evaluate the structure and evolutionary stability of the G matrix for plant metabolites that are involved in defense and allelopathy in the tall goldenrod, Solidago altissima. We show that G has evolutionarily diverged between experimentally-replicated populations that evolved in the presence versus the absence of ambient herbivory, providing direct evidence for the evolution of G by natural selection. Specifically, evolution in an herbivore-free habitat altered the orientation of G, revealing a negative genetic covariation between defense- and competition-related metabolites that is typically masked in herbivore-exposed populations. Our results may be explained by predictions of classical quantitative genetic theory, as well as the theory of acquisition-allocation trade-offs. The study provides compelling evidence that herbivory drives the evolution of plant genetic architecture.
Raw data for chemical compound concentration in leaves and roots. Columns titled "total_Lph" etc., show total concentration of each compound class. "Lph", etc., are standardised values (a mean of 0 and variance of 1) to place them on similar scale for analysis.
Bayesian posterior distribution of G matrix.
Pedigree information for control (herbivore) populations.
Pedigree information for spray (no-herbivore) populations.
microsatelite genotyping data
Microsatelite data for genotyping plants in the clone library from field selection experiment.