Bibliographic record
Abstract
为了探讨瓜叶菊黄烷酮3-羟基化酶(flavanone 3-hydroxylase, F3H)在类黄酮生物合成途径中的作用，本文作者以瓜叶菊( Pericallis cruenta L′Herit; Senecio cruentus Masson ex L′Herit)不同色系品种作为实验材料，分析基因表达与色素成分之间的关系。类黄酮成分的紫外-可见吸收光谱分析表明，红色系、紫色系、蓝色系舌状花中既含有花青素又含有花黄素，而白色系舌状花中仅含有花黄素。Southern blot检测发现， F3H 同源基因在不含有花青素苷的白色和含有花青素苷的蓝色瓜叶菊基因组上均至少分布有2个拷贝。Northern blot分析结果显示，两种颜色的瓜叶菊舌状花中均具有 F3H 同源基因的转录本，且表达水平均相同，与是否含有花青素苷并不直接相关。上述研究结果表明：瓜叶菊中 F3H 同源基因可能不仅参与了花青素苷的合成，还参与了花黄素的合成。根据这一研究结果还可以推测出，白色系与其他色系瓜叶菊之间的花色差异是在 F3H 基因之后的合成步骤中产生的，因此瓜叶菊白色系品种可以作为研究花青素苷合成途径中 F3H 基因下游其他基因功能的良好受体材料。
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 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".