1. Department of Biochemistry and Molecular Biology, Egerton University, Njoro Campus, PO Box, 536 – 20115, Egerton, Kenya;
2. Department of Biochemistry, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya;
3. Biosciences Eastern and Central Africa–International Livestock Research Institute (BecA-ILRI) Hub, Nairobi, 00100, Kenya;
4. Plant Pathology and Plant-Microbe Biology Section, School of Integrative Plant Science, Cornell University, Geneva, NY, U.S.A.; and
5. CGIAR Research Program on Roots, Tubers and Bananas, International Potato Center, Nairobi, Kenya