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Review
. 2010 May;277(9):2022-37.
doi: 10.1111/j.1742-4658.2010.07633.x.

Sugar signalling and antioxidant network connections in plant cells

Mohammad Reza Bolouri-Moghaddam  1 , Katrien Le Roy, Li Xiang, Filip Rolland, Wim Van den Ende
Affiliations
Free article
Review

Sugar signalling and antioxidant network connections in plant cells

Mohammad Reza Bolouri-Moghaddam et al. FEBS J. 2010 May.
Free article

Abstract

Sugars play important roles as both nutrients and regulatory molecules throughout plant life. Sugar metabolism and signalling function in an intricate network with numerous hormones and reactive oxygen species (ROS) production, signalling and scavenging systems. Although hexokinase is well known to fulfil a crucial role in glucose sensing processes, a scenario is emerging in which the catalytic activity of mitochondria-associated hexokinase regulates glucose-6-phosphate and ROS levels, stimulating antioxidant defence mechanisms and the synthesis of phenolic compounds. As a new concept, it can be hypothesized that the synergistic interaction of sugars (or sugar-like compounds) and phenolic compounds forms part of an integrated redox system, quenching ROS and contributing to stress tolerance, especially in tissues or organelles with high soluble sugar concentrations.

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