HEL — Daucus carota subsp. sativus

Summary

DCAR_027479 (DcHEL) on carrot chromosome 8 encodes a protein of the PR4 family, containing a Barwin domain and annotated with RNA nuclease, chitin-binding, sugar-binding, hydrolase, transmembrane receptor protein serine/threonine kinase, and protein-binding activities. The gene is associated with defence responses, including response to herbivore, virus, bacteria, and fungi, as well as systemic acquired resistance, immune response, and hypersensitive response-programmed cell death. It is linked to phloem transport, leaf vascular tissue pattern formation, ethylene response, auxin and brassinosteroid signalling, and secretory vesicle and extracellular localisation. Associations with leaf vein morphology, pathogen defence, resistance to Botrytis cinerea, salt tolerance, premature senescence, and leaf cell death have been noted. Related genes in other species connect the family to vascular development and leaf venation.