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Plant Physiology 91:624-628 (1989)
© 1989 American Society of Plant Biologists

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Development and Growth Regulation

Artefactual Origins of Cyclic AMP in Higher Plant Tissues

Anne Spiteri, Odile M. Viratelle, Philippe Raymond, Michel Rancillac, Julie Labouesse and Alain Pradet

Station de Physiologie Végétale, Institut National de la Recherche Agronomique, Centre de Recherches de Bordeaux, B. P. 131, 33140 Pont de la Maye, France, Institut de Biochimie Cellulaire et de Neurochimie, Centre National de la Recherche Scientifique, Université de Bordeaux II, 1 rue Camille Saint Saëns, 33077 Bordeaux Cedex, France

A highly sensitive radioimmunoassay has been used to determine the levels of adenosine 3',5'-cyclic monophosphate (cAMP) in five higher plants (Lactuca sativa, Helianthus annuus, Oryza sativa, Pinus pinaster, Nicotiana tabacum). Particular attention was paid to the three main sources of errors in the characterization of cAMP in plants: presence of interfering substances in plant tissues; possible artefactual formation of cAMP from endogenous ATP during extraction, purification, and assay; and microbial origin of cAMP. In all the tested tissues, the cAMP level was below the detection limit of 0.5 picomole per gram fresh weight, a value much lower than those reported for similar materials of the same species in many previous studies. This result is not in favor of cAMP-dependent regulations in higher plants.




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H Sentenac, N Bonneaud, M Minet, F Lacroute, J. Salmon, F Gaymard, and C Grignon
Cloning and expression in yeast of a plant potassium ion transport system
Science, May 1, 1992; 256(5057): 663 - 665.
[Abstract] [PDF]


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Copyright © 1989 by the American Society of Plant Biologists