Ngatha mutant inflorescences

ABSTRACT: Floral organ identities are specified by few transcription factors which act as master regulators. Subsequently, specification of organ axes programs the distribution of distinct tissue types within the organs that themselves develop unique identities. The C-class, AGAMOUS-clade MADS box genes are primary promoters of the gynoecium which is divided into a distal style and a subtending ovary along the apical-basal axis. We show that members of a clade of B3-domain transcription factors, NGATHA1 to NGA4 (NGA1-4), are expressed distally in all lateral organs, and all four have a redundant and essential role in style development. Loss of all four genes results in gynoecia where style is replaced by valve-like projections and a reduction in style-specific SHATTERPROOF1 (SHP1) expression. In agr

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Idan Efroni 

PROVIDER: E-GEOD-15555 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress