Sugar alcohols in plants: implications for enhancing tree seedlings drought tolerance and production strategies
2025
Vovener de Verlands Edmond | Zonglie Hong | Andrew S. Nelson
Abstract Sugar alcohols, also known as glycitols, are reduced derivatives of sugars with multiple hydroxyl groups attached to the sugar skeleton. While classified as carbohydrates, they differ from monosaccharides by lacking an aldehyde or keto group. Glycitols are naturally abundant in various organisms and can also be synthesized industrially. These compounds possess unique physical and chemical properties, enabling them to function as compatible solutes, regulating cellular water balance and providing protection against stress. This mini-review explores the biosynthesis and roles of key glycitols, such as inositols, pinitol, and mannitol, in plants, focusing on their functions under environmental stresses, particularly drought. Furthermore, it discusses the potential application of these sugar alcohols in improving the production and resilience of tree seedlings, which is critical in the context of climate change. This paper highlights the need for further research into the role of glycitols in stress response, particularly for tree seedlings, to enhance nursery practices and forest regeneration.
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