Low oxygen sensing and balancing in plant seeds: a role for nitric oxide
2007
How Plants Sense Low Oxygen Levels
publication
Evidence: high
Author Information
Author(s): Borisjuk Ljudmilla, Macherel David, Benamar Abdelilah, Wobus Ulrich, Rolletschek Hardy
Primary Institution: Institut für Pflanzengenetik und Kulturpflanzenforschung (IPK)
Hypothesis
Nitric oxide plays a key role in sensing and balancing oxygen levels in plant seeds.
Conclusion
The study shows that nitric oxide helps regulate oxygen consumption in seeds, preventing anoxia and controlling energy availability.
Supporting Evidence
- Low oxygen levels increase nitric oxide concentrations in seeds.
- Nitric oxide reduces oxygen consumption in seeds.
- The effect of nitric oxide on respiration is reversible.
- Nitric oxide helps maintain energy availability for storage product synthesis.
- Changes in oxygen availability affect endogenous nitric oxide levels.
Takeaway
Plants can tell when there's not enough oxygen and use a special gas called nitric oxide to help them breathe better and stay healthy.
Methodology
The study used microsensors and mass spectrometry to measure nitric oxide and oxygen concentrations in seeds.
Digital Object Identifier (DOI)
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