Synchrotron assessment of boron sensitivity and storage in <i>Brassica napus</i> and <i>B. rapa</i>
Bibliographic record
Abstract
Application of low levels of boron (B) to soil can suppress clubroot symptoms slightly on brassica crops, but phytotoxicity increases rapidly as rates of added B increase. Tolerance to added B has been reported previously in Brassica rapa and more recently in B. napus. We investigated B uptake, speciation, and storage in sensitive and tolerant lines as part of a wider examination of the potential for use of B-tolerance in B. napus to reduce clubroot severity. The current study demonstrated that B speciation and translocation in B. napus differed between B-tolerant and B-sensitive lines. A higher proportion of B was incorporated into nitrogen-containing compounds in root tissues of the putative tolerant lines relative to sensitive lines grown under normal condition (control). In treatments that received added B, trigonally coordinated B-O compounds were dominant in all plant tissues with the presence of tetragonally coordinated B-O compounds. B-tolerant lines accumulated less B in shoots relative to B-sensitive lines when exposed to excess B, which would help plants avoid B phytotoxicity. This study supports previous suggestions that application of B onto a B-tolerant cultivar could potentially be included as one strategy in an integrated crop strategy to reduce clubroot severity.
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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 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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".