Affiliation: | College of Life Sciences, Peking University, Beijing 100871, People''s Republic of China (Y.L.); National Institute of Biological Sciences, Zhongguancun Life Science Park, Beijing 102206, People''s Republic of China (Y.L., Y.Z.); Michael Smith Laboratories (M.J.T., X.L.) and Department of Botany (X.L.), University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z4 |