Phytophthora infestans KE-1 is spreading rapidly across East Africa

When Anne Njoroge was growing up in the village of Kikuyu, in central Kenya, she would listen to her mother and friends complain that their potato crops had been “Waru KuhIa ni mbaa” – burnt by the wet, cold weather. Years later, when she began working at the Rwanda Agricultural Research Institute’s potato program, it occurred to her that the culprit behind those crop losses had been Phytophthora infestans – the pathogen responsible for late blight, the disease behind the world’s major potato famines – but her mother and neighbors didn’t know that it was a disease.