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A Recombinant Plant Natriuretic Peptide Causes Rapid and Spatially Differentiated K+, Na+ and H+ Flux Changes in Arabidopsis thaliana Roots
Citation
Ludidi, N and Morse, M and Sayed, M and Wherrett, TC and Shabala, SN and Gehring, C, A Recombinant Plant Natriuretic Peptide Causes Rapid and Spatially Differentiated K+, Na+ and H+ Flux Changes in Arabidopsis thaliana Roots, Plant and Cell Physiology, 45, (8) pp. 1093-1098. ISSN 0032-0781 (2004) [Refereed Article]
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.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Research Division: | Agricultural and Veterinary Sciences |
| Research Group: | Crop and Pasture Production |
| Research Field: | Crop and Pasture Improvement (Selection and Breeding) |
| Objective Division: | Plant Production and Plant Primary Products |
| Objective Group: | Environmentally Sustainable Plant Production |
| Objective Field: | Environmentally Sustainable Plant Production not elsewhere classified |
| UTAS Author: | Wherrett, TC (Mr Timothy Wherrett) |
| UTAS Author: | Shabala, SN (Professor Sergey Shabala) |
| ID Code: | 30688 |
| Year Published: | 2004 |
| Web of Science® Times Cited: | 22 |
| Deposited By: | Agricultural Science |
| Deposited On: | 2004-08-01 |
| Last Modified: | 2005-06-10 |
| Downloads: | 0 |
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