What is it about?
Plants with different sensitivity to lack of oxygen, such as rice and wheat, show different signal transition events under oxygen deficiency stress. In the more tolerant rice, a drop in oxygen causes a rapid decrease in potassium and pH in both roots and shoots, while the reactions in wheat are more slow. Presence of tetra ethylammonium, a substance that blocks potassium channels in the plasma membrane (the cell external membrane) prevents the efflux of potassium from the plant cells. This demonstrates that voltage-dependent ion channels are involved.
Featured Image
Why is it important?
Our results showed that oxygen deficiency not only causes changes in cellular calcium, but also changes in cellular potassium and pH in plant roots and shoots and that the reactions are more pronounced in tolerant plants such as rice, leading to survival.
Perspectives
To be able to produce plants that are tolerant to oxygen deficiency it is necessary to know which mechanisms the plant has leading to survival.
Professor Sylvia Lindberg
Stockholm University
Read the Original
This page is a summary of: Potassium Efflux and Cytosol Acidification as Primary Anoxia-Induced Events in Wheat and Rice Seedlings, Plants, September 2020, MDPI AG,
DOI: 10.3390/plants9091216.
You can read the full text:
Contributors
The following have contributed to this page
