Effect of Mg Deficiency on Antioxidant Enzymes Activities and Lipid Peroxidation
Bibliographic record
Abstract
The importance of the physiological role of nutrient elements in plant behavior concerning higher and morestable yield, using the durum wheat variety P1252 as model plant, was examined under hydroponic conditions.To investigate the effects of Mg deficiency, the element was eliminated from the media solutions. Resultsshowed that Mg elimination decreased the chlorophyll content. Lack of Mg only affected guaiacol peroxidase(GPX) and catalase (CAT) activities significantly. The SOD/APX+GPX+CAT ratio as an index of assessing thebalance between H2O2-producing and H2O2-scavenging enzymes increased leading to the accumulation of H2O2in cell. The elevation of SOD/APX+GPX+CAT ratio and H2O2 accumulation indicates the occurrence ofoxidative stress in leave cells under Mg deficiency. Lack of magnesium (Mg) resulted in considerable increasein other oxidative stress indices, cell death and Malondialdehyde (MDA). The reason is the occurrence ofHaber-Weiz reaction in absence of Mg and production of hydroxyl radical, a very dangerous radical, leading toincreasing damage of cell biomolecules and their apoptosis.
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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) | 0.001 | 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 | 0.001 | 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".