1. Research Institute for Bioresources, Okayama University, Kurashiki, Okayama 710–0046, Japan (K.I.-K., M.M.); Graduate School of Agriculture and Life Sciences, University of Tokyo, Yayoi, Bunkyo, Tokyo 113–0032, Japan (N.Y., T.O., Y.N., J.K.); and National Institute for Basic Biology, Okazaki 444–8585, Japan (S.I.)