ArticleFrontiers in plant science2026
Integrated transcriptomic and metabolomic analyses reveal the molecular mechanisms of sugar accumulation and yield trade-off in sugar beet.
Article in Frontiers in plant science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: The negative correlation between taproot yield and sugar content remains a persistent challenge in sugar beet ( Methods: We integrated transcriptomic and widely-targeted metabolomic data across five developmental stages of taproots from two lines with contrasting phenotypes: a high-sugar/low-yield line (Group K) and a low-sugar/high-yield line (Group D). Results: Our analysis revealed that high sucrose accumulation is driven by minimized metabolic consumption rather than enhanced biosynthesis. While the high-yield line (Group D) sustained elevated expression of sucrose synthesis genes ( Conclusions: The yield-sugar trade-off in sugar beet appears to reflect differential carbon allocation between primary metabolic pathways and sucrose storage, associated with distinct transcriptional programs in the two lines. The identified transcription factor hubs may participate in regulating the balance between growth-associated carbon use and storage metabolism. These findings provide candidate molecular targets for future studies aimed at simultaneously improving yield and sugar content in sugar beet.
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