InterPro domain: IPR044272

This entry represents a group of plant GATA transcription factors, including GATA18/19/20 from Arabidopsis and GAT15 from rice.

GATA18, also known as HANABA TARANU (Han), is a GATA transcription factor that affects both flower and shoot apical meristem (SAM) development in Arabidopsis thaliana. It is expressed at the boundaries between meristem and floral organ primordia and at the boundaries of floral organs. Mutation of HAN leads to fused sepals, and reduced numbers of petals and stamens [ 1 ]. It plays a central role in the control of petal development; it communicates with the meristem through PNH, regulates primordia development via JAG and BOP2, and maintains boundary morphology through CKX3-mediated cytokinin homeostasis during flower development in Arabidopsis [ 2 ].

GAT15, also known as NECK LEAF 1, is a GATA-type transcription factor expressed predominantly in the bract primordia. It modulates and coordinates organogenesis in both vegetative phytomers and panicles during reproductive development in rice [ 3 ].

1. HANABA TARANU is a GATA transcription factor that regulates shoot apical meristem and flower development in Arabidopsis. Plant Cell 16, 2586-600
2. HANABA TARANU (HAN) Bridges Meristem and Organ Primordia Boundaries through PINHEAD, JAGGED, BLADE-ON-PETIOLE2 and CYTOKININ OXIDASE 3 during Flower Development in Arabidopsis. PLoS Genet 11, e1005479
3. NECK LEAF 1, a GATA type transcription factor, modulates organogenesis by regulating the expression of multiple regulatory genes during reproductive development in rice. Cell Res 19, 598-611