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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
biochemistry, genetics and molecular biology
Salt and osmotic stress cause rapid increases in Arabidopsis thaliana cGMP levels
FEBS Letters, Volume 569, No. 1-3, Year 2004
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Description
A guanylyl cyclase has been recently identified in Arabidopsis but, despite the use of pharmacological inhibitors to infer roles of the second messenger 3′,5′-cyclic guanosine monophosphate (cGMP), very few measurements of actual cGMP levels in plants are available. Here, we demonstrate that cGMP levels in Arabidopsis seedlings increase rapidly (≤5 s) and to different degrees after salt and osmotic stress, and that the increases are prevented by treatment with LY, an inhibitor of soluble guanylyl cyclases. In addition, we provide evidence to suggest that salt stress activates two cGMP signalling pathways - an osmotic, calcium-independent pathway and an ionic, calcium-dependent pathway. © 2004 Published by Elsevier B.V. on behalf of the Federation of European Biochemical Societies.
Authors & Co-Authors
Donaldson, Lara
South Africa, Cape Town
University of Cape Town
Ludidi, Ndiko N.
South Africa, Bellville
University of the Western Cape
Knight, Marc R.
United Kingdom, Oxford
University of Oxford
Gehring, Chris A.
South Africa, Bellville
University of the Western Cape
Denby, Katherine J.
South Africa, Cape Town
University of Cape Town
Statistics
Citations: 183
Authors: 5
Affiliations: 3
Identifiers
Doi:
10.1016/j.febslet.2004.06.016
ISSN:
00145793