PINB — Triticum aestivum

Summary

TRAESCS5D02G004000, also known as PINB or Gsp-D1 in bread wheat on chromosome 5D, encodes a protein with serine-type endopeptidase inhibitor activity, nutrient reservoir activity, and toxin activity, belonging to the bifunctional inhibitor/lipid transfer protein/seed storage superfamily. This gene is associated with grain texture, seed hardness, vitreousness, and texture, as well as flour and starch yield, starch digestibility, and grain thickness. It is associated with pre-harvest sprouting, seed maturation, endosperm development, and defence response to bacteria. Additional associations include grain weight per spike, grain yield per plant, test weight, seed protein content, grain iron and zinc concentrations, and drought sensitivity. The encoded protein is localised to the extracellular region and membrane. Studies of related genes in other species link the family to seed storage and stress responses.