Involved in resistance response to the pathogenic oomycetes Phytophthora infestans and Phytophthora capsici and to the pathogenic bacteria Pseudomonas syringae. ATP + L-seryl-[protein] = ADP + H(+) + O-phospho-L-seryl-[protein] ATP + L-threonyl-[protein] = ADP + H(+) + O-phospho-L-threonyl-[protein] Increased susceptibility to the oomycetes Phytophthora brassicae and Phytophthora capsici and to the bacteria Pseudomonas syringae, characterized by stronger necrotic symptoms and higher bacterial proliferation. In the C-terminal section; belongs to the protein kinase superfamily. Ser/Thr protein kinase family. In the N-terminal section; belongs to the leguminous lectin family.