Overexpression of the CBF2 transcriptional Activator Enhances Oxidative Stress Tolerance in Arabidopsis Plants
Bibliographic record
Abstract
The C-repeat/dehydration-responsive-element binding factor genes (CBF1-3) are transcriptional activatorsinvolved in governing plant responses to low temperatures; their overexpression enhances plant frost tolerance.We found that overexpression of CBF2 in Arabidopsis enhanced oxidative stress tolerance as compared withwild-type plants, an effect that was manifested in: increased seed germination rates on Petri dishes containingH2O2; delayed leaf senescence following incubation with H2O2; and delayed wilting and senescence afterspraying whole plants with paraquat, a generator of superoxide radicals. Transcript profiling analysis using theAffymetrix ATH1 genome array revealed that overexpression of CBF2 did not affect expression of reactiveoxygen-scavenging genes but rather, remarkably enhanced expression of oxidative-stress-responsivetranscription factor genes. Overall, the present findings suggest that overexpression of CBF2 in Arabidopsisenhances oxidative stress tolerance, most likely via activation of a network interaction among stress-relatedtranscription-factor genes.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| 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 | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 teacher head, 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".