Phenylpropanoid metabolism may dominate the black spot resistance of Chinese olive (Canarium album)
Bibliographic record
Abstract
The black spot of Chinese olive ( Canarium album ) seriously reduces the appearance quality and economic value of this fruit. In this study, we identified a black spot resistant variety called 'Shuanghuxiang' (CS) and a susceptible variety called 'Yunzhi' (CY), and investigated the underlying resistance mechanisms. Paraffin sectioning analysis indicated greater susceptibility of CY fruit epidermis to breakage post black spot infection compared to CS, with SEM analysis showing lower pathogen presence on CS fruits. These results revealed that the variation in black spot resistance could be attributed to differences in fruit epidermis structure and antimicrobial properties. Through conjoint transcriptomic and metabolomic analyses, we observed enrichment of genes (particularly CaPAL1 and Ca4CL1 ) and metabolites (particularly trans-cinnamate, ferulic acid and sinapate) related to phenylpropanoid metabolism in CS. These results indicated that the phenylpropanoid metabolism may play a crucial role in black spot resistance. This study provides theoretical basis and valuable material for the breeding of resistant varieties of Chinese olive. • 'Shuanghuxiang' (CS) exhibited effective black spot resistance. • Black spot resistance may be due to fruit epidermis & antimicrobial properties. • The phenylpropanoid metabolism may play a crucial role in black spot resistance.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| 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 teacher head, 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".