SEN4 — Asparagus officinalis

Summary

A4U43_C05F24780 (SEN4) on asparagus chromosome 5 encodes a xyloglucan endotransglucosylase/hydrolase (XTH) belonging to the beta-glucanase/GH16 family, with xyloglucan-specific endo-beta-1,4-glucanase activity (EC 2.4.1.207) and endoxyloglucan transferase activity. The gene is associated with cell wall assembly, loosening, and organization, xyloglucan catabolism and metabolism, secondary cell wall biogenesis, lignin anabolism, and responses to gibberellin, auxin, brassinosteroid, salt, and far-red light. It is linked to chlorophyll content, seed growth and development, aluminum response, brassinosteroid sensitivity, lateral root development, salt tolerance, leaf senescence, freezing tolerance, and root cell wall development. The protein localizes to the plant-type cell wall, apoplast, Golgi, secretory vesicle, and plasma membrane. Studies of related genes in other species connect this gene family to root elongation, vascular development, aluminum tolerance, and freezing stress resistance.