Metabolomic and Genomic Analysis of Theobromine Biosynthesis in <i>Theobroma cacao</i>
Bibliographic record
Abstract
This study combined metabolomics and genomics data to analyze the biosynthesis of theobromine in Theobroma cacao . The results show that theobromine is mainly synthesized in the young peels and cotyledons, and gradually accumulates in the seeds as the tissues mature. Metabolic pathway analysis revealed that the synthesis of theobromine is related to the transformation of purine nucleotides such as AMP and GMP, with key intermediates including 7-methylxanthosine and 3-methylxanthine. Genomic research has found that during the domestication process, genes related to theobromine metabolism were significantly selected, thereby affecting the theobromine content in different varieties. Multi-omics data also indicate that post-processing steps such as fermentation can lead to a decrease in theobromine levels. This study aims to provide molecular targets and theoretical references for improving cocoa quality and developing functional components.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".