CEP1 — Asparagus officinalis

Summary

A4U43_C06F19940 (CEP1) on asparagus chromosome 6 encodes a peptidase C1A papain C-terminal domain-containing protein with thiol endopeptidase activity. The gene is associated with programmed cell death involved in cell development, floral organ senescence, anther wall tapetum development, and responses to nutrient levels, sugars, and hormones including cytokinin, gibberellin, ethylene, and auxin. It is linked to defence response to fungi, proteolysis, and brassinosteroid-mediated signalling. The product localises to senescence-associated vacuoles, protein storage vacuoles, lysosomes, and the ER. Associations include nitrate uptake, photosynthetic rate, leaf composition, seedling growth, organ identity, leaf senescence, shoot and root growth, seed yield, drought tolerance, stomatal closure, nitrogen remobilisation, pollen development and fertility, stem growth, insect resistance, and programmed cell death. Related genes in other species are linked to developmental senescence, powdery mildew resistance, cadmium-induced programmed cell death, and saccharification efficiency.