Regular Papers / Articles OrdinairesIntine wall modifications during germination of<i>Zygophyllum fabago</i>(Zygophyllaceae) pollen grains
Bibliographic record
Abstract
The composition of the inner layer (intine) of mature, activated, and germinated Zygophyllum fabago L. (Zygophyllaceae) pollen grains was studied. Cytochemical techniques showed neutral and acidic polysaccharides to be the major component of the thin and unlayered intine. The intine lacks lipids, with only scattered lipid globules being observed near the plasma membrane. Immunocytochemical localization of esterified and unesterified pectins in the intine was performed to determine the behaviour (permeability and elasticity) of germinal apertures. The high density of unesterified pectins in the intine of Z. fabago may be related to harmomegathic changes, which increase the elasticity of the intine during hydration and germination processes. A new layer was deposited in germinated pollen grains, recognized by 1,3-β-glucan (callose) antibodies; this layer plays a role in keeping the grains swollen during the germination process and probably forms a selective barrier to control the movement of substances through the pollen walls. Indeed, the composition of the Z. fabago intine was related to both the hydration process preceding germination and the passage of allergenic proteins through it.Key words: callose, germination, intine, pectins, pollen grains, Zygophyllum fabago.
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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 | 0.002 | 0.002 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.048 | 0.007 |
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".