SKD1 — Phaseolus vulgaris

Summary

PHAVU_011G092700 (PvSKD1) on chromosome 11 of French bean encodes a member of the AAA+ ATPase family, specifically a VPS4/MIT domain-containing protein with proteasomal ATPase, ATP hydrolase, metalloendopeptidase, and ubiquitin-binding activities. The gene is associated with endosomal transport via the multivesicular body (MVB) sorting pathway, vacuolar protein sorting, endosome membrane budding, and mitotic spindle breakdown. It is linked to seed coat morphology and color, seed viability, pollen fertility, cotyledon morphology, embryo development, seedling growth, root morphology, and responses to high temperature, salt, and abscisic acid. Additional associations include stomatal closure, gravitropism, auxin gradient, trichome branching, and defence response to bacteria. Studies of related genes in other species connect the family to seed coat mucilage production, vacuolar maintenance, and heat stress tolerance.