Research Assistant
Lima, Peru; Nairobi, Kenya; & Kampala, Uganda
My main responsibility was leading the technical development of a sweetpotato resistant to the African weevil using Bt biotechnology. Sweetpotato is a staple food crop in Sub-Saharan Africa, where the African weevil is its most important biological production constraint, causing even total loss. For this project, I led a team of 3 Research Assistants, plus both graduate and undergraduate students; my responsibilities included designing experiments and directing their execution. I was closely involved in setting goals and discussing future project directions, working with an international team of experts from Africa, Europe and the United States, under the supervision of Dr. Marc Ghislain.I developed a binary vector to enable intragenesis in sweetpotato for another project I worked on. Intragenesis is a biotechnological alternative to the widely used transgenesis. In intragenesis only DNA sequences from the plant's own genome are introduced by transformation, whereas in transgenesis, DNA sequences from diverse sources are introduced into the plant's genome, including DNA from bacteria, viruses, and many other organisms that would not transfer DNA to the plant by natural means. Intragenesis allows genetic engineering of a plant, without causing concerns in the public opinion that arise from the insertion of DNA extraneous to the plant. This project I developed mostly alone, under the supervision of Dr. Marc Ghislain for the most part, and later Dr. Jan Kreuze.I also worked on a project developing a potato resistant to late blight, its main biological production constraint in most parts of the world. This project was targeted for countries in South-East Asia, however, prospects to expand it to many other countries were considered for the future. For this project I was part of a team of 5 Research Assistants plus undergraduate students. My role was to design and develop gene constructs that allowed the production of the transgenic (late blight-resistant) potatoes.