By creating a comprehensive potato super pangenome from 300 potato varieties and wild relatives, McGill University scientist aim to identify genetic traits for disease resistance and climate adaptation.
Amid the ongoing challenges posed by climate change to global food security, scientists from McGill University have embarked on a mission to enhance the resilience and nutritional value of potatoes. Their innovative approach involves assembling the genome sequences of nearly 300 potato varieties and their wild relatives to create a comprehensive potato super pangenome. This breakthrough research aims to identify genetic traits that can lead to the development of disease-resistant and climate-resilient "super spuds".
The potato holds a critical place as a staple food source worldwide, ranking just behind rice and wheat in terms of human consumption. Professor Martina Stromvik and her research team leveraged the power of supercomputers to analyse data from public gene banks in Canada, the United States and Peru to construct the potato pangenome. This collaborative effort encompasses 60 species, representing the most extensive collection of genome sequence data for potatoes and their relatives to date.
The super pangenome sheds light on the potato's genetic diversity and the potential genetic traits that could be integrated into modern-day potato crops for improvement, and it holds the key to making potatoes more resilient, disease-resistant, and better suited to withstand extreme weather conditions.
Wild potato species, which have adapted to various ecological niches and climates, serve as a valuable resource for insights into critical genetic traits. As climate change introduces new challenges such as extreme weather events, disease outbreaks, and shifting growing conditions, understanding and harnessing these traits is becoming increasingly essential for food security.
The implications of this research are far-reaching. The potato super pangenome can potentially answer numerous questions about the evolution of this essential crop, domesticated by Indigenous peoples in the mountains of southern Peru nearly 10,000 years ago. Moreover, it offers a roadmap for identifying specific genes that can contribute to the creation of a "super spud" capable of withstanding diseases and extreme weather conditions. As climate change continues to threaten global food supplies, the pursuit of resilient and nutrient-rich potato varieties becomes more imperative than ever.
For the full article “Pangenome analyses reveal impact of transposable elements and ploidy on the evolution of potato species” and in-depth insights into McGill University's pioneering research, please click here