Identification of Proteins Present in the Douglas Fir Ovular Secretion: An Insight into Conifer Pollen Selection and Development
Why this work is in the frame
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Bibliographic record
Abstract
A week before fertilization in Douglas fir, a secretion fills the micropylar chamber of the ovule that houses the engulfed pollen. This liquid initiates pollen tube formation. This secretion is rich in proteins. Proteomic analysis using gel electrophoresis, combined with quadrupole time‐of‐flight tandem mass spectrometry peptide sequencing, identified nine of the more abundant proteins as a 90 kDa xylosidase with an isoelectric point (pI) of 6.6, a 65 kDa xylosidase with a pI of 6.0, a 70 kDa invertase with a pI of 6.3, a 50 kDa invertase with a pI of 6.5, a 45 kDa galactosidase with a pI of 7.8, a 29 kDa galactosidase with a pI of 5.9, a 40 kDa aspartyl protease with a pI of 5.5, a 37 kDa peroxidase with a pI of 7.9, and a 33 kDa serine carboxypeptidase–like protein with a pI of 4.5. This research presents the first evidence that conifer ovular secretion proteins may influence pollen selection and development.
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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 | 0.001 | 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) | 0.000 | 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 it