Duplication and functional diversification of HAP3 genes leading to the origin of the seed-developmental regulatory gene, LEAFY COTYLEDON1 (LEC1), in nonseed plant genomes - Zengyan Xie; Xia Li; Beverley J. Glover; Shu Nong Bai; Guang-Yuan Rao; Jingchu Luo; Ji Yang (Molecular Biology and Evolution, 2008)