Expression proteomics identifies biochemical adaptations and defense responses in transgenic plants with perturbed polyamine metabolism

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Abstract

Soluble proteins from leaves of transgenic tobacco plants with perturbed polyamine metabolism, caused by S-adenosylmethionine decarboxylase overexpression, were analysed by comparative proteomics. A group of proteins was found to be increasingly repressed, in parallel with the degree of polyamine perturbation, in each of the three independent transgenic lines. These were identified as isoforms of chloroplast ribonucleoproteins, known to be involved in chloroplast mRNA stability, processing and translation. Another group of eight proteins strongly induced in the most metabolically perturbed line was identified as multiple, uncharacterised isoforms of the defense protein PR-1, a known marker for systemic acquired resistance. © 2004 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.

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Franceschetti, M., Perry, B., Thompson, B., Hanfrey, C., & Michael, A. J. (2004). Expression proteomics identifies biochemical adaptations and defense responses in transgenic plants with perturbed polyamine metabolism. FEBS Letters, 576(3), 477–480. https://doi.org/10.1016/j.febslet.2004.08.085

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