Microbial communities living on duckweed are largely beneficial, but benefits vary across environment and sources of duckweed and microbes. However, we find strong correlation between duckweed and microbial growth, even in the face of environmental stress. See our preprint.
Species interactions change in outcome across environmental gradients. Below, a photo shows some high alpine plants growing in close proximity. At such high elevation sites, these plants may mutually ameliorate stressful aspects of the environment (cold, unstable soil, drying winds), whereas at lower elevations, the same species are more likely to compete strongly for resources. Similar changes in interactions occur for many types of species interactions, and may have wide-ranging evolutionary consequences, such as increasing mutualism and local adaptation in stressful environments. Together with my co-authors, I explore these ideas and a testing framework in a forthcoming paper at AmNat. Check out the summary available from the journal.
First Lemna minor results presented at CSEE, July 19th, 2018
Context-dependency in local adaptation between plants and microbes: Anna O’Brien (University of Toronto), Megan Frederickson (University of Toronto)
I am now working with Megan Frederickson at the University of Toronto Department of Ecology & Evolutionary Biology, studying host-microbe interactions and microbially mediated phenotypes in duckweed (Lemna minor).
“Adaptative divergence in a biotic context: role of plant-rhizosphere interactions and climate in phenotypic divergence of teosinte”
Update: Featured on The Molecular Ecologist
“Environmental gradients shape adaptation in interactions between teosinte and soil biota”