Fig. 1: Comprehensive characterization of the roles of MtKNOXI in compound leaf development.

a Phylogenetic tree of KNOX proteins from several angiosperms (A. thaliana, M. truncatula, C. cajan, G.max, L. japonicas, C. arietinum, P. vulgaris, A. duranensis, V. angularis, V. radiata, and P. sativum). b Leaf morphology of wild-type (WT) plants. c–f Representative leaves derived from transgenic plants overexpressing 35S:MtKNOX1 (c), 35S:MtKNOX2 (d), 35S:MtKNOX6 (e), and 35S:MtKNOX7 (f) with a weak phenotype, respectively. g Mature leaf in transgenic plants overexpressing 35S:MtKNOX8. (w/o) in (c–g) indicates that w in o total transgenic plants shows the displayed features. h Gene model of MtKNOX7 and Tnt1 insertion positions in mtknox7 alleles. Boxes represent exons and lines represent introns. i Reverse transcription-PCR (RT-PCR) analysis of MtKNOX7 transcripts in WT and mtknox7 mutants. MtActin was used as the loading control. Similar results were obtained from three independent experiments. j–n Representative leaves of WT (j), mtknox7-1 (k), mtknox7-2 (l), mtknox1-1 mtknox2-1 mtknox6-1 triple mutants (m), and mtknox1-1 mtknox2-1 mtknox6-1 mtknox7-1 quadruple mutants (n). Scale bars, 5 mm in (b–g and j–n). Source data are provided as a Source Data file.