IOS1 — Phaseolus vulgaris

Summary

PvIOS1 (PHAVU_005G163100) 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. It is associated with pectin binding, ammonium channel activity, and red/far-red light photoreceptor activity. The gene is linked to the downregulation of defense responses to oomycetes, lateral root branching, response to flooding, endosperm development, and regulation of leaf senescence. It localizes to the pollen tube, nuclear body, plasmodesma, and membrane. Associations with agronomic traits include yield, biomass, photosynthetic rate, water use efficiency, leaf angle, root phototropism, phosphorus uptake, and sensitivity to glyphosate, jasmonic acid, and gibberellic acid. Studies of related genes in other species link the family to disease resistance, callose deposition, ABA signaling, and shade avoidance.