CLP — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.3HG0307850 (HvCLP) on barley chromosome 3H encodes a protein with xylanase inhibitor I-like and aspartic peptidase A1 domains, and is annotated with chitinase, aspartic endopeptidase, enzyme inhibitor, nutrient reservoir, and IgE-binding activities. The gene is associated with chitin, polysaccharide, protein, and chlorophyll breakdown, proteolysis, leaf senescence, shoot and root development, cell death, and defence responses to fungi. It localises to the apoplast and extracellular space. HvCLP is linked to photosynthetic rate and, through calcium and stress-related phenotypes, to broader stress responses. Studies of related genes in other species connect the family to grain yield, drought tolerance, disease tolerance, seed shape, starch content, plant height, and root length, though these associations are not yet established in barley.