Table 2 Plants targeting transcription factors analyzed in this study. A total of 198 mutants, including 198 misexpression were analyzed in this study. The misexpression lines targeted 39 MYB, 29 bHLH and 4 bZIP genes. The period phenotypes of 19 out of 22 over-expression lines were not consistent in multiple transgenics. Aberrant clock precision was only observed in 1 out of 3 bZIP48-ox lines. Numbers in ( ) indicated lines over-expressing same genes, which support that the phenotypes were caused by misexpression of the genes.