Screening for Root Nodulation-related Mutants of Lotus japonicus Induced by Space Flight Knockdown of LjALD1, AGD2-like defense response protein 1, influences plant growth and nodulation in Lotus japonicus Functions of Small GTPase Rac1 in Nodulation Process in Lotus japonicus Multiple Components are Integrated to Determine Leaf Complexity in Lotus japonicus Functional Diversity of CYCLOIDEA-like TCP Genes in the Control of Zygomorphic Flower Development in Lotus japonicus