CEP1 — Asparagus officinalis

Summary

A4U43_C05F15150 (CEP1) in asparagus (Asparagus officinalis) on chromosome 5 encodes a papain-like cysteine peptidase with thiol endopeptidase activity, belonging to the peptidase C1A family. The gene is associated with programmed cell death in cell development, floral organ senescence, anther wall tapetum development, and responses to nutrients, sugars, cytokinin, ethylene, auxin, brassinosteroid signalling, UV-B, and defence against fungi. It is linked to senescence-associated vacuoles, lysosomes, the ER, and plant-type vacuoles. Associations include leaf senescence, shoot and root growth, seed yield, drought tolerance, stomatal closure, nitrogen remobilization, pollen development and fertility, insect resistance, secondary wall thickening, and osmotic, salt, and hypoxia stress responses. Studies of related genes in other species connect the family to developmental senescence, powdery mildew resistance, cadmium-induced programmed cell death, and saccharification efficiency.