SEN4 — Asparagus officinalis

Summary

AoSEN4 (A4U43_C05F24350) on asparagus chromosome 5 encodes a xyloglucan endotransglucosylase/hydrolase (XTH) family protein with endoxyloglucan transferase and xyloglucan-specific endo-beta-1,4-glucanase activities. It is associated with cell wall assembly, loosening, and biogenesis, as well as xyloglucan catabolism and metabolism. The gene is linked to responses to gibberellin, auxin, brassinosteroid, salt, and far-red light, and to primary root development, leaf vascular tissue pattern formation, and secondary cell wall biogenesis. It localizes to the apoplast, plant-type cell wall, Golgi, secretory vesicle, and plasma membrane. Associations include chlorophyll content, seed growth and development, aluminum response, brassinosteroid sensitivity, lateral root development, salt tolerance, leaf senescence, freezing tolerance, and osmotic stress tolerance. Studies of related genes in other species link the family to root elongation, vascular development, aluminum tolerance, and freezing stress resistance.