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Flooding and low oxygen responses in plants
Ole Pedersen1, Pierdomenico Perata2, Laurentius A C J Voesenek3
1Department of Biology, The University of Copenhagen, Universitetsparken 4, 3rd floor, 2100 Copenhagen, Denmark.
Functional Plant Biology : FPB
|June 3, 2020
Summary
Flooding stresses plants with low oxygen, impacting vegetation and crops. Research explores plant traits for improved flood tolerance, focusing on oxygen, carbon dioxide, and ethylene responses.
Area of Science:
- Plant Science
- Environmental Biology
- Agronomy
Background:
- Increasing global flood events threaten natural vegetation and crops.
- Flooding causes low oxygen (hypoxia/anoxia) in plant tissues, affecting survival.
- Plants have evolved traits for aeration and metabolic adjustment to survive low-oxygen conditions.
Purpose of the Study:
- To present key research on improving flood tolerance in terrestrial plants.
- To advance understanding of plant responses to low oxygen during flooding.
- To investigate the combined effects of low oxygen, carbon dioxide, and ethylene.
Main Methods:
- Studies conducted under controlled laboratory conditions and in field settings.
- Utilized natural wetland plants as models and economically important crops (rice, wheat, barley).
- Investigated responses in roots, shoots, and whole plants to flooding stress.
Main Results:
- Advanced understanding of plant tissue responses to oxygen shortage caused by flooding.
- Highlighted the complex interplay of reduced oxygen, increased carbon dioxide, and ethylene accumulation.
- Demonstrated the need for carefully designed studies to unravel mechanistic relationships.
Conclusions:
- Terrestrial plants possess adaptive mechanisms to cope with flooding-induced hypoxia.
- Understanding combined gas and hormonal changes is crucial for improving flood tolerance.
- Further research is needed to elucidate cellular and tissue-level responses to complex flooding stress.
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