PFN1 — Capsicum annuum

Summary

CaPFN1 (T459_28891) on pepper chromosome 11 encodes a profilin, a member of the profilin family that binds G-actin, F-actin, proline-rich regions, and exhibits phosphatidylinositol kinase activity. In pepper, CaPFN1 is associated with defense response by cell wall thickening, hypersensitivity, basophil activation, and defense response to fungi. It is linked to actin polymerization or depolymerization, regulation of unidimensional cell growth, polar cell growth, lateral root development, inflorescence development, leaf development, seed germination, seedling development, and PIP biosynthesis. Localization evidence connects it to the cell cortex, plasmodesma, plant-type cell wall, plastid, nucleolus, stress granule, and haustorium. Studies of related genes in other species link the profilin family to salt tolerance, drought tolerance, heat stress tolerance, abscisic acid response, immune response, and fungal resistance.