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Effect of drought acclimation on sugar metabolism in millet.

Drought stress triggers sugar accumulation in plants, providing energy and aiding in protection against oxidative damage. Plant hardening under mild stress conditions has been shown to enhance plant resistance to severe stress conditions. While sugar accumulation and metabolism under drought stress...

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Published in:Protoplasma Vol. 262; no. 1; pp. 35 - 50
Main Authors: Amoah, Joseph N., Adu-Gyamfi, Monica Ode
Format: Journal Article
Published: Springer Nature Jan2025
Online Access:View this record in EBSCOhost
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      dt: Jan2025
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      pub: Springer Nature
      place: New York, New York
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        10.1007/s00709-024-01976-5
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        atl: Effect of drought acclimation on sugar metabolism in millet.
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          Amoah, Joseph N.
          Adu-Gyamfi, Monica Ode
        affil: https://ror.org/0384j8v12 School of Life and Environmental Sciences, University of Sydney, 380 Werombi Road, Brownlow Hill, 2570, Camden, NSW, Australia
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      ab: Drought stress triggers sugar accumulation in plants, providing energy and aiding in protection against oxidative damage. Plant hardening under mild stress conditions has been shown to enhance plant resistance to severe stress conditions. While sugar accumulation and metabolism under drought stress have been well-documented in crop plants, the effect of drought acclimation treatment on sugar accumulation and metabolism has not yet been explored. In this study, we investigated the impact of drought stress acclimation on sugar accumulation and metabolism in the leaves and root tissues of two commonly cultivated foxtail millet (Setaria italica L.) genotypes, 'PI 689680' and 'PI 662292'. Quantification of total sugars (soluble sugar, fructose, glucose, and sucrose), their related enzymes (SPS, SuSy, NI, and AI), and the regulation of their related transcripts (SiSPS1, SiSuSy1, SiSWEET6, SiA-INV, and SiC-INV) revealed that drought-acclimated (DA) plants exhibited levels of these indicators comparable to those of control plants. However, under subsequent drought stress conditions, both the leaves and roots of non-acclimated plants accumulated higher levels of total sugars, displayed increased activity of sugar metabolism enzymes, and showed elevated expression of sugar metabolism-related transcripts compared to drought-acclimated plants. Thus, acclimation-induced restriction of sugar accumulation, transport, and metabolism could be one of the metabolic processes contributing to enhanced drought tolerance in millet. This study advocates for the use of acclimation as an effective strategy to mitigate the negative impacts of drought-induced metabolic disturbances in millet, thereby enhancing global food security and promoting sustainable agricultural systems.
      pubtype: Academic Journal
      doctype: Journal Article
      ougenre: Article
    language: English
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