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Key Event: 2459
Key Event Title
Reduced carbon fixation in Calvin cycle
Short name
Biological Context
| Level of Biological Organization |
|---|
| Cellular |
Cell term
Organ term
Event Components
Key Event Overview
AOPs Including This Key Event
| AOP Name | Role of event in AOP | Point of Contact | Author Status | OECD Status |
|---|---|---|---|---|
| PSII inhibition by atrazine leading to rice yield loss | KeyEvent | SURIYA S (send email) | Under development: Not open for comment. Do not cite |
Taxonomic Applicability
Life Stages
Sex Applicability
Key Event Description
Decreased availability of ATP and NADPH limits the activity of the Calvin cycle enzymes (e.g., RuBisCO), reducing the rate of CO2 assimilation and carbon fixation into organic compounds.
How It Is Measured or Detected
Measured via gas exchange analysis (CO2 uptake) using an infrared gas analyzer (IRGA), or by measuring RuBisCO enzyme activity in leaf extracts.
Domain of Applicability
Taxonomic Applicability: Oryza sativa (rice) and other higher plants. Life Stage: Vegetative and reproductive stages. Sex: Not applicable.