HEL — Phaseolus vulgaris

Summary

PvHEL (PHAVU_006G102200) on chromosome 6 of French bean encodes a PR4 family protein containing a Barwin domain and a chitin-binding domain, with annotated RNA nuclease, chitin-binding, sugar-binding, hydrolase, transmembrane receptor protein serine/threonine kinase, and protein-binding activities. The gene is associated with defence responses to bacteria, fungi, viruses, and herbivores, as well as systemic acquired resistance, hypersensitive response-programmed cell death, ethylene response, auxin and brassinosteroid signalling, phloem transport, and leaf vascular tissue pattern formation. It is linked to drought and salt tolerance, resistance to Botrytis cinerea, disease and pathogen resistance, reduced wilt symptom development, abnormal leaf venation with reduced vein number, premature senescence, and leaf cell death. The protein localises to secretory vesicles, the extracellular region, and the plasma membrane. Studies of related genes in other species link the family to pathogen defense, seed germination under salt stress, and insect resistance.