Salt stress-induced Ca2+ waves are associated with rapid, long-distance root-to-shoot signaling in plants
Abstract
This work documents a previously unreported plant-wide signaling system based on the rapid, long-distance transmission of Ca2+ waves. In the root these waves move through the cortical and endodermal cell layers at speeds of up to 400 µm/s, i.e., traversing several cells per second. This Ca2+ wave system correlates with the triggering of molecular responses in distant parts of the plant upon perception of localized (salt) stress. Such propagating Ca2+ waves provide a new mechanism for the rapid integration of activities throughout the plant body.
- Publication:
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Proceedings of the National Academy of Science
- Pub Date:
- April 2014
- DOI:
- 10.1073/pnas.1319955111
- Bibcode:
- 2014PNAS..111.6497C