The genes known to function in subgroup II were reported to play a role in plant signal transduction, plant growth and biotic stress response, for instance, PXC1 and CRCK1 played a role in signal transduction [44, 45], PRK1 was essential for the postmeiotic development of pollen [46], FLS2 was involved in preinvasive immunity against bacterial infection [47], and RCH1 was critical to the resistance of the hemibiotrophic fungal pathogen Colletotrichum higginsinaum [48]. The gene discussed is KPNA2; the disease is bacterial infectious disease.