As he points to a white shelf that holds bean seeds, Austrian biologist Peter Wenzl explains that one of them, obtained in Ecuador, provided a gene for the discovery that major seed protein arcelin offers resistance to the bean weevil.
A genetic resource centre run by the Nigeria-based International Institute for Tropical Agriculture (IITA) has banked thousands of crop varieties for disaster relief and research, holds the world’s largest and most diverse collection of cowpeas, and contains some of Africa’s rarest insect species.
A global food watchdog works around the clock to preserve crop biodiversity, with a seed bank deep in the Colombian countryside holding the largest collection of beans and cassava in the world and storing crops that could avert devastating problems.