REVIEW article
Front. Plant Sci.
Sec. Plant Physiology
Volume 16 - 2025 | doi: 10.3389/fpls.2025.1652076
This article is part of the Research TopicPlant Glycobiology - A Sweet World of Glycans, Glycoproteins, Glycolipids, and Carbohydrate-Binding Proteins, Volume IIView all 4 articles
Sucrose Synthase Dynamics and Its Potential Role in Heat Stress Tolerance in Cereals
Provisionally accepted
- Govind Ballabh Pant University of Agriculture & Technology, Pantnagar, India
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Sucrose synthase (SuSy) is a key enzyme in plant carbohydrate metabolism, catalyzing the reversible conversion of sucrose into UDP-glucose and fructose. SuSy is central to several developmental and metabolic processes, where its activity is closely linked to biomass accumulation, pollen viability, grain filling, and seed development. This review explores the role of SuSy, comparison with invertase, examines its enzymatic interactions, and highlights its contribution to metabolic adaptation under heat stress, while emphasizing its critical role in strengthening sink capacity. Elevated temperatures negatively impact sucrose metabolism and source-sink relationships, disrupting yield formation in cereal crops. SuSy, with its distinct isoforms and subcellular localizations, adapts flexibly to thermal stress, maintaining sucrose flux and stabilizing energy supply in developing tissues. Its stressresponsive expression patterns suggest that specific isoforms could be targeted to enhance thermotolerance. Overall, understanding the spatial, temporal, and regulatory dynamics of SuSy offers promising avenues for developing climate-resilient crops. Harnessing its full potential through targeted breeding and gene editing could be pivotal in mitigating the adverse effects of rising temperatures on global food security.
Keywords: Carbohydrate metabolism1, abiotic stress2, Starch3, sink-source4, sink strength5
Received: 25 Jun 2025; Accepted: 26 Aug 2025.
Copyright: © 2025 Jaiswal, Parihar, Verma and Kumar. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Jai Prakash Jaiswal, Govind Ballabh Pant University of Agriculture & Technology, Pantnagar, India
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