| Abstract Detail
Ecophysiology Branch, Haley A [1], Moxley, Dylan R [2], Anstett, Daniel N [3], Angert, Amy L [4]. Historical differences in climate between populations alter responses to severe stress. In recent years, extreme weather events, such as prolonged droughts, have become more frequent and more intense. The southwest coast of North America experienced a severe drought between 2011-2016, resulting in a major selective force for plants to evolve physiological and morphological adaptations in response to water stress. This study uses scarlet monkeyflower, Mimulus cardinalis, to assess how geographically distinct populations from vulnerable riparian areas respond to environmental stress and compares these responses in light of historical climatic contexts from 1979-2010. Seeds were collected from northern wet sites and southern dry sites from pre-drought and peak-drought populations and grown in a resurrection common garden experiment. Plants were then subjected to either wet or dry treatments. We examine changes in physiological indicators of stress and relate these to morphological changes in the plant, evaluating rapid evolution and plastic responses of four distinct populations.
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1 - University Of British Columbia, Botany Room #3200, 6270 University Boulevard, Vancouver, BC, V6T 1Z4, Canada
2 - University of British Columbia, Botany, Room 3156 - 6270 University Boulevard, Vancouver, British Columbia, V6T 1Z4, Canada
3 - University of British Columbia, Room 3156 - 6270 University Boulevard, Vancouver, British Columbia, V6T 1Z4, Canada
4 - University of British Columbia, Botany and Zoology, Room 3156 - 6270 University Boulevard, Vancouver, British Columbia, V6T 1Z4, Canada
Keywords:
rapid evolution
Photosynthesis
Drought
abiotic stress
chlorophyll fluorescence .
Presentation Type: Oral Paper
Session: ECOPH1, Ecophysiology I
Location: /
Date: Monday, July 19th, 2021
Time: 11:15 AM(EDT)
Number: ECOPH1006
Abstract ID:324
Candidate for Awards:Physiological Section Physiological Section Li-COR Prize,Physiological Section Best Paper Presentation |
