The Activity of Key Enzymes Related to Flavonoids in Test-tube Plantlets of Hippophae neurocarpa Under Low Temperature
Bibliographic record
Abstract
Test-tube plantlets leaves of Hippophae neurocarpa was used as materials,activities of three key enzymes related to flavonoids,phenylalanine ammonialyase(PAL),4-hydroxy cinnamic acid enzyme(C4H)and 4-Coumadin acid coenzyme A ligase(4CL)were tested under low temperature in test-tube plantlets leaves of Hippophae neurocarpa.The results showed that the three enzymes could be affected easily under low temperature.In the early stage of stress,activities of PAL and C4 Hfluctuated greatly.The activity of PAL reached the highest value at 12 hours and got the lowest value by 24 hours,which was 63.514%lower than that of control.Its activity recovered gradually afterwards.The activity of C4 Hgot the lowest value at 12 hours and began to increase after that.Its activity was 447.2%of the control by 72 hours.The activity of 4CL reached the highest after 6hours and was 36.285% higher than that of control.The activity of 4CL decreased after that and was lower than that of control at last.The activities of PAL,C4 Hand 4CL in test-tube plantlets leaves of Hippophae neurocarpachanged in different ways under low temperature.Phenylaprapanoid metabolism was activated and synthesis of secondary metabolites such as flavonoids could be regulated.
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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 | 0.000 |
| 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 | 0.001 |
| 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".