The nucleus follows an internal cellular scale during polarized root hair cell development
Bibliographic record
Abstract
Abstract The root hair cell is a product of asymmetric cell division, which grows in a polar manner, and thus is an attractive model cell type from a cellular biology aspect. Beyond the fundamental cell biology context, the root hair is involved in water and nutrient acquisition, making it important for agronomic applications. Nuclear positioning in the cell is crucial during root hair development. Often, textbooks demonstrate illustrations of the nucleus located at a fixed position from the tip of a root hair or at the very end of a root hair. The fundamental question is whether the nucleus follows a cellular scale during polarized growth. Maintaining the scale is a rudimentary biological process during development at the organismal and cellular levels. In this study, we altered root hairs through hormonal, nutrient, and environmental factors to decipher the cellular scale (no scale, universal scale, or internal scale) maintained by the nucleus. We utilized the live cell imaging combined with a quantitative cell biology approach and, surprisingly discovered that the nucleus always follows an internal scale in the root hair cell. This finding dramatically shifted our view about the nuclear position in a polarized cell and will have a potential to test across the tree of life. Altogether, understanding the cellular scale involved with nucleus positioning will have broad implications. It encourages a reexamination of textbooks and reinforces the agricultural importance in a changing climate.
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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 | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 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".