ChemGen Integrative Graduate Education and Research Traineeship Program (M.R.-S., M.S., C.K., T.E.), Center for Plant Cell Biology, Institute for Integrative Genome Biology (M.R.-S., Y.B., M.S., C.K., I.K., T.E.), Department of Botany and Plant Sciences (M.R.-S., Y.B., M.S., C.K., T.V., T.E.), and Department of Nematology (P.R., I.K.), University of California, Riverside, California 92521 (At 2015-11-03)