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A Recombinant Plant Natriuretic Peptide Causes Rapid and Spatially Differentiated K+, Na+ and H+ Flux Changes in Arabidopsis thaliana Roots.
- Source :
-
Plant & Cell Physiology . Aug2004, Vol. 45 Issue 8, p1093-1098. 6p. 1 Diagram, 3 Graphs. - Publication Year :
- 2004
-
Abstract
- Plant natriuretic peptides (PNPs) belong to a novel class of systemically mobile molecules that are structurally similar to the N-terminal domain of expansins and affect physiological processes such as protoplast volume regulation at nano-molar concentrations. Here we demonstrate that AtPNP-A, a recombinant Arabidopsis thaliana PNP causes rapid H+ influx in the elongation zone of A. thaliana roots but not in the mature zone. AtPNP-A also induces significant K+ and Na+ efflux and this effect is seen in the mature root zone only. These observations suggest that responses to AtPNP-A are developmental stage and tissue specific and point to a complex role in plant growth and homeostasis. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00320781
- Volume :
- 45
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Plant & Cell Physiology
- Publication Type :
- Academic Journal
- Accession number :
- 20618832
- Full Text :
- https://doi.org/10.1093/pcp/pch113