PP1 — Triticum turgidum subsp. durum

Summary

TRITD4BV1G129020, designated TtPP1 on durum wheat chromosome 4B, encodes a protein with a PP1 catalytic subunit domain and protein phosphatase inhibitor activity. The gene is associated with auxin export across the plasma membrane, regulation of epidermal cell division, root hair tip growth, and gibberellic acid homeostasis. It is linked to leaf and vascular morphology traits, bacterial blight disease resistance, seed set percent, temperature stress response, plant male sterility, and shoot system elongation. Localisation evidence places the product in the protein phosphatase type 1 complex, basal plasma membrane, vacuole, nucleolus, and plasmodesmata. Related genes in other species are linked to polar auxin transport, root meristem growth, phototropism, and defense responses against Botrytis cinerea.