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Abstract Detail

Molecular Ecology

Turner, Kathryn G [1].

Herbarium genomics and the invasion of Chorispora tenella (Brassicaceae).

Biological invasions of non-native plant species present compelling motivation to understand how human-induced changes in the environment and species distributions influence ecological and evolutionary processes. Their documented geographic spread across time makes them ideal for study using historic collections, allowing better insight to evolutionary change over short time scales. Applying advanced genomic approaches to historic samples is key to understanding the processes that allow plants to rapidly establish and adapt to new environments. Theory predicts that dramatic ecological and evolutionary changes affect invasive species soon upon arrival in a new habitat. Yet current research relies on sampling contemporary populations, and therefore reveals little about the initial stages of invasion. Here, I present preliminary work to understand the history of an invasive weed by exploiting an untapped historical resource to observe "snapshots" of the initial stages of invasion and the genetic changes that occur as a plant species spreads. With genetic material from dried plant specimens collected throughout the course of an invasion, from herbarium collections across North America, I used techniques for ancient DNA to study evolution over the course of the 100 year invasion of North America by blue mustard (Chorispora tenella, Brassicaceae), a widespread and governmentally listed noxious invasive weed.

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1 - Pennsylvania State University, Biology, Huck Life Sciences Building - Room 408, University Park, PA, 16802, USA

Evolutionary Ecology
invasive plants

Presentation Type: Poster
Session: P, Molecular Ecology Posters
Location: Arizona Ballroom/Starr Pass
Date: Monday, July 29th, 2019
Time: 5:30 PM This poster will be presented at 5:30 pm. The Poster Session runs from 5:30 pm to 7:00 pm. Posters with odd poster numbers are presented at 5:30 pm, and posters with even poster numbers are presented at 6:15 pm.
Number: PME001
Abstract ID:370
Candidate for Awards:None

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