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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]

DOI: doi:10.1093/pcp/pch113

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
Author:Wherrett, TC (Mr Timothy Wherrett)
Author:Shabala, SN (Professor Sergey Shabala)
ID Code:30688
Year Published:2004
Web of Science® Times Cited:17
Deposited By:Agricultural Science
Deposited On:2004-08-01
Last Modified:2005-06-10
Downloads:0

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