SEN4 — Asparagus officinalis

Summary

A4U43_C05F24320, designated SEN4 (synonyms AoXTH12, AoXTH1, AoXTH2, AoXTH3, AoXTH5, XTR7, XTR6, XTR9, XTH19, XTH18, XTH17, XTH16) on asparagus chromosome 5, encodes a beta-glucanase/XTH family protein with xyloglucan-specific endo-beta-1,4-glucanase and endoxyloglucan transferase activities. The gene is associated with xyloglucan catabolism, cell wall loosening, assembly, and organization, as well as responses to gibberellin, auxin, brassinosteroid, salt, and far-red light. It is linked to primary root development, secondary cell wall biogenesis, lignin anabolism, and leaf vascular tissue pattern formation. The product localizes to the apoplast, plant-type cell wall, Golgi, secretory vesicle, and plasma membrane. Associations include chlorophyll content, seed growth, brassinosteroid sensitivity, aluminum response, lateral root development, salt tolerance, leaf senescence, freezing tolerance, and shade avoidance. Studies of related genes in other species connect the family to root elongation, vascular development, aluminum tolerance, and freezing stress resistance.