BSP-9-4 Sun Jan 3 14:45 – 15:00 Rapid evolution of leaf characteristics in response to drought stress in populations of scarlet monkeyflower (Mimulus cardinalis) Branch, HA*; Moxley, DR; Anstett, DN; Angert, AL; University of British Columbia; University of British Columbia; University of British Columbia; University of British Columbia firstname.lastname@example.org
As global temperatures rise, extreme weather events are becoming more frequent. Between 2011-2016, the American west coast experienced a severe drought, creating a particular challenge for plants, especially those in riparian areas. This study seeks to understand how scarlet monkeyflower, Mimulus cardinalis, which occurs throughout Oregon and California, is adapted to diverse climates across their range, from historically wet environments in the north and drier in the south. This study examines how these populations responded to this severe perturbation and whether certain populations are better adapted to respond to future climatic change. We collected seeds of M. cardinalis from populations across the species’ range prior to this drought and during the peak of the drought and used these seeds in a resurrection common garden experiment, where plants were exposed to either wet or dry treatments. By examining physiological and morphological characteristics of the leaves, we evaluate rapid evolutionary and plastic responses, as well as the evolution or loss of plasticity.