Spatial distribution of functional components in the starchy endosperm of wheat grains.

ABSTRACT: The starchy endosperm of the mature wheat grain comprises three major cell types, namely sub-aleurone cells, prismatic cells and central cells, which differ in their contents of functional components: gluten proteins, starch, cell wall polysaccharides (dietary fibre) and lipids. Gradients are established during grain development but may be modified during grain maturation and are affected by plant nutrition, particularly nitrogen application, and environmental factors. Although the molecular controls of their formation are unknown, the high content of protein and low content of starch of sub-aleurone cells, compared to the other starchy endosperm cells types, may result from differences in developmental programming related to the cells having a separate origin (from anticlinal division of

SUBMITTER: Shewry PR 

PROVIDER: S-EPMC7015275 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature