SRK2I — Arabidopsis thaliana

Summary

AT5G66880, also known as SRK2I or SnRK2.3, encodes a protein with a serine/threonine kinase domain and annotated molecular functions including calcium-dependent protein serine/threonine kinase activity, core promoter sequence-specific DNA binding, protein kinase activator activity, and salicylic acid binding. This Arabidopsis thaliana gene on chromosome 5 is associated with diverse biological processes such as regulation of abscisic acid anabolism, response to water, chlorophyll a breakdown, stomatal lineage progression, and nitrate import. It has been linked to numerous agronomically relevant traits including drought recovery, drought sensitivity, leaf water potential, turgor pressure, vegetative vigor, specific leaf area, starch mobilization, root branching, potassium uptake, nitrate transport, iron content, cadmium concentration, and the vegetative to reproductive phase transition. The gene product localizes to the cytosol, plasmalemma, plastid, mitochondria, and cell wall. Studies of related genes in other species connect the family to susceptibility to Pseudomonas syringae in tomato and microtubule stability in rice.