Biodiversity Research Seminar Series (BRS)
BRS Jeff Ross-Ibarra: A Tale of Two Teosintes (and the origins of modern maize)
October 20, 2021, 12:00 pm to 1:00 pm
host: Biodiv Postdocs (Julia Kreiner)
Title: A Tale of Two Teosintes (and the origins of modern maize)
Abstract: In the talk I first discuss the role of adaptive introgression into maize from its wild relative teosinte. I then show how this admixture seems to have played a role in maize adaptation to both temperate and highland conditions in several parts of the Americas outside of the range of teosinte. I end with unpublished work that takes advantage of new sequencing and new ancient samples to show that indeed all modern maize appears to contain admixture from teosinte, implying a new model of maize domestication and spread. We posit an initial domestication of maize in Mexico that spread across the Americas, and that subsequently admixture with teosinte led to a new lineage which spread back out from the highlands of Mexico, replacing or mixing with local maize.
Topic: Biodiversity Research Seminar
Date: Oct 20, 2021 11:41 AM Vancouver
Meeting Recording:
https://ubc.zoom.us/rec/share/TrxkQ7YRbGxR7H0MmxieYyPJ-Vlm16QVkDuWy4GEk…
Access Passcode: w65%3Bug