ArticleFrontiers in plant science2026
Metabolic response of tobacco leaves to dry-bulb temperature variation during flue curing: a nontargeted metabolomic approach.
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. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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1 citing paper in PubMed.
- Harvest maturity is associated with carbon reallocation and fresh-to-flue-cured metabolic changes inFrontiers in plant science · 2026Article
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Abstract
This study evaluated the impact of two dry-bulb temperatures-a lower temperature of 44 °C (LT) and a higher temperature of 46 °C (HT)-applied during the color-fixation stage of flue-curing on the metabolomic reprogramming of tobacco ( Results: A total of 7,233 differentially expressed metabolites (DEMs) were identified across treatments. Compared with fresh leaves, 3,017 and 3,032 DEMs were detected in the 44 °C and 46 °C groups, respectively, while 1,184 metabolites differed between the two curing temperatures (HT vs LT). Pathway enrichment analysis indicated that lipid metabolism, fatty acid biosynthesis, and hormone signal transduction were significantly affected during curing. Notably, malonic acid, indole-3-acetic acid, and docosahexaenoic acid showed temperature-responsive variation, suggesting coordinated regulation of carbon allocation, lipid remodeling, and senescence-related signaling. The higher temperature treatment (46 °C) induced distinct metabolic shifts, including enhanced accumulation of specific lipid- and organic acid-related metabolites, which were associated with increased leaf stiffness after curing. In contrast, curing at 44 °C promoted more balanced metabolic adjustment and moderated lipid oxidative processes. Conclusions: These findings provide metabolic evidence that subtle differences in color-fixation temperature can significantly influence biochemical coordination and structural traits in tobacco leaves, offering mechanistic insight for optimizing curing temperature to improve leaf quality.
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