The development of Carters strap is started after the endogenic cells are fully delayed, and there is currently two news signal transduction that promote endothelial cell formation of Casparian strip. The first is transcription factor Short-root (SHR) Activated additional two transcription factors Myb36 and Scarecrow (SCR), the former can stimulate Casparian Strip Proteins (Casp1-5), Peroxidase (PER64) and ESB1 (Enhanced) Suberin 1), etc., the latter, the latter affects the position of the carbide strap in the inner skin cell, which causes the position of the Casparian strip to be too close to the Stele; the second is medium Casparian Strip Integrity Factor (CIF1-2) and the GSO1 (SGN3) and GSO2 receptor bonded to the endothelial cell radial wall and the GSO2 receptor in the lateral wall. CASP in the cells is concentrated to a cell membrane region corresponding to the position of the Cascade Band, forming a Casparian Strip Membrane Domain (CSD), and the CSD is incorporated in the region, The GS01 receptor is surrounded by the edge of each CSD region, promoting CSD fused into a continuous strip region, that is, the region where the Casparian strip is to be formed. Casparian strip protein is a membrane protein that interacts with each other and can bind to proteins needed to synthesize lignin such as PER64, ESB1 and respiratory oxidase homologer F (RBOHF) to activate the downstream reaction of Carzite band development. In mutant plants lacking GSO1 receptors or at the same time lacking CIF1 and CIF2 polypeptides, CASP1 is abnormally distributed on the endothelial cell membrane, and the CSD cannot normally fuse into a continuous and complete band structure, thus eventually forming a broken and discontinuous Carlsian band. Environmental factors such as light, soil salinity and water deficit can affect the development of the Casparian strip. Photo See also Suberin Endodermis Exodermis Notes References Plant anatomy Plant physiology