Magnesium inhibits cadmium translocation from roots to shoots, rather than the uptake from roots, in barley
Bibliographic record
Abstract
We examined the effect of magnesium (Mg) on cadmium (Cd) toxicity symptoms, uptake, and sorption to the plasma membrane in barley (Hordeum vulgare L. ‘Minorimugi’). Plants were grown in a constant concentration of Cd with variable Mg concentrations. Plants supplied with Cd only had necrotic first leaves, undeveloped emerging leaves, and outgrown lateral buds. The latter may account for greater dry mass accumulation in plants treated with Cd only than plants supplied with Mg. The symptoms of Cd stress were at least partly alleviated by the addition of Mg to the medium. Mg reduced accumulation of Cd in both shoots and roots, although there was a clear dose response in shoots only. We conclude that Mg inhibited Cd accumulation either by competing with Cd for uptake by the root or by inhibiting Cd translocation to the shoot. Cd sorption to plasma membrane vesicles from roots was unaffected by a concentration of Mg similar to that of Cd, but was reduced by high concentrations of Mg. This evidence of only weak competition between the two minerals suggests that the primary effect of Mg on reducing Cd accumulation is not through competition at the root surface but that Mg inhibits Cd translocation to shoots.
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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) | 0.001 | 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".