Tangled Bank Seminar Dec 12

Wednesday December 12 the Tangled Bank Seminar will be held by Bastian Star from Centre for Ecological and Evolutionary Synthesis (CEES), Department of Biosciences (UiO) and Freek T. Bakker from Wageningen University & Research (Netherlands)

Catching the Past, using ancient DNA to obtain long-term perspectives

13:00 – 14:00

Bastiaan Star

Researcher

Centre for Ecological and Evolutionary Synthesis

Department of Biosciences (UiO)

Abstract

Ancient DNA (aDNA) is a valuable resource that creates a wide range of opportunities to learn about and from the past. We use genome-wide aDNA to answer both evolutionary and archaeological questions with a focus on human impacts in past ecosystems. Such genome-wide aDNA data can be challenging and expensive to obtain, as levels of endogenous DNA from the samples of interest is often low, requiring significant sequencing effort to obtain sufficient data. Nonetheless, through several examples I show how even low-coverage aDNA sequencing data can be used to yield novel insights in past patterns of human exploitation and trade.


Herbarium genomics, DNA fragmentation and damage: getting archival plant DNA to work

14:00 – 15:00

Freek T. Bakker

Assistant Professor

Wageningen University & Research, Netherlands

Abstract

Apart from providing an important taxonomic reference, herbarium collections provide a wealth of data for testing historic biological hypotheses. What also has become clear, is that herbarium collections are a great source of DNA. Given 2nd generation sequencing technology it turns out that obstacles known from the 'PCR era' are now readily overcome using massive parallel sequencing. I will discuss some examples of how we produce plastome sequences from archival, historic herbarium and evaluate what kind of DNA damage may be in there. For instance, genomic fractionation in herbarium DNA could possibly be non-random and consistent with a higher-order kinetics.

Publisert 10. des. 2018 12:21 - Sist endret 10. des. 2018 12:24