PIP2 — Brassica oleracea var. botrytis

Summary

BoPIP2, encoded by the cauliflower gene BOLND125_C03P024360.1 on chromosome 3, is an aquaporin family protein with water channel activity, phospholipase D activity, and protein kinase activity. It is associated with water and hydrogen peroxide membrane transport, regulation of stomatal closure, response to desiccation, brassinosteroid signaling, and circadian regulation. The gene has been linked to traits including photosynthetic rate, root hair length, flowering time, cadmium concentration, and responses to salt, drought, freezing, and osmotic stress. It is also associated with disease resistance phenotypes, including downy mildew and bacterial resistance, as well as programmed cell death and immunity. Localization evidence places the product at the plasma membrane, plasmodesmata, endoplasmic reticulum, Golgi, and plant-type vacuole. Studies of related genes in other species link the family to water transport, stomatal movement, root hydraulic conductivity, and pathogen response.