Related Experiment Video
Updated: Apr 19, 2026

Identification of the Genes Involved in Stomatal Development via Epidermal Phenotype Scoring
Published on: January 20, 2023
Expression of PRX36, PMEI6 and SBT1.7 is controlled by complex transcription factor regulatory networks for proper
Philippe Ranocha1, Edith Francoz, Vincent Burlat
1a Université de Toulouse; UPS; UMR 5546; Laboratoire de Recherche en Sciences Végétales ; Castanet-Tolosan , France.
Abstract:
Mucilage secretory cells (MSC) form an intriguing cell layer important for seed germination. In Arabidopsis thaliana, several master transcription factors (TFs) and "actor" proteins have already been identified as key players for seed coat differentiation including epidermal cell formation, mucilage production and extrusion. The regulation of the genes coding for MSC cell wall "actor" proteins by TFs needs to be better established. Here, the expression and the regulation of 3 known actors (PRX36, PMEI6, SBT1.7) and 2 additional putative actors (PRX56, DIR12) have been analyzed in T-DNA mutants affected in master TFs (ap2, egl3/gl3, gl2, myb5, tt8, ttg1, ttg2 and luh1/mum1). Genes with somehow similar function are differentially regulated and conversely, genes with different functions are regulated in similar manner.
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