IOS1 — Phaseolus vulgaris

Summary

PvIOS1 (PHAVU_005G162100) on chromosome 5 of French bean encodes a protein with a malectin-like domain, leucine-rich repeats, and a serine/threonine/tyrosine kinase catalytic domain, annotated with pectin binding, ammonium channel activity, and red/far-red light photoreceptor activity. The gene is associated with downregulation of defense response to oomycetes, lateral root branching, response to flooding, endosperm development, abscisic acid metabolism, and circadian regulation of calcium ion oscillation. It localizes to the pollen tube, nuclear body, plasmodesma, and membrane. Associations include yield, biomass, photosynthetic rate, water use efficiency, leaf angle, phosphorus uptake, photoperiod-sensitive flowering, salt tolerance, bacterial and downy mildew resistance, callose deposition, and ABA signaling. Related genes in other species are linked to pattern-triggered immunity, disease susceptibility, and shade avoidance.