SHORT INTERNODE1 regulates the activity of MADS transcription factors during rice floral organ development.

Floral organ identity is fundamental to species diversity and reproductive success in plants and is mainly determined by the combinatorial action of MADS homeotic factors. However, despite their conserved roles in specifying floral organ identity, the regulation of MADS transcription factors remains elusive. Here, we show that the rice (Oryza sativa L.