sugar-transport
Sugar transport in plants refers to the movement of sugars—primarily sucrose—from sites of photosynthesis (source tissues) to sites of growth and storage (sink tissues) via specialized membrane proteins including SWEET transporters and SUT/SUC sucrose carriers. This process is fundamental to plant physiology, governing how carbon is allocated to developing seeds, roots, fruits, and other organs. Understanding sugar transport mechanisms has broad implications for improving crop yield, stress tolerance, and the manipulation of plant carbon partitioning for agricultural and biotechnological applications.
open_in_new WikipediaPubMed · 2026-04-15
Scientists reviewed the best tools available to measure sugar levels inside individual plant cells at a microscopic scale. Understanding where sucrose accumulates within cells helps explain how plants move energy from leaves to roots, fruits, and seeds.
The cytosol — a critical zone inside plant cells where many chemical reactions happen — is especially difficult to measure because it forms only a thin layer between other cell compartments.
Eight distinct methods for measuring sucrose at the subcellular level were reviewed, including FRET nanosensors, Raman microspectroscopy, and mass spectrometry imaging.
No single method is currently sufficient on its own; advances are needed to resolve sugar concentrations in living tissues in real time.