Transcriptional activation of 2 classes of genes during the hypersensitive reaction of tobacco leaves infiltrated with an incompatible isolate of the phytopathogenic bacterium Pseudomonas solanacearum

Plant Molecular Biology
Y MarcoD Froissard

Abstract

Fourteen cDNA clones whose corresponding mRNAs accumulate during the hypersensitive reaction (HR) of tobacco leaves infiltrated with an incompatible strain of the bacterial pathogen Pseudomonas solanacearum have been subdivided by sequence homologies into 6 families. Studies on the accumulation of the mRNAs encoded by these genes in compatible and incompatible plant-bacterial interactions have been carried out and indicate that the 6 cDNA clones can be subdivided into 2 groups. In one group corresponding to 3 cDNA clones, the maximal level of mRNA accumulation is similar in both types of interaction, whereas in the other group, maximal mRNA accumulation in leaves undergoing an HR is 3- to 7-fold higher than in leaves infiltrated with the compatible strain. Within each group, the timing and kinetics of accumulation of the corresponding mRNAs differ for each individual cDNA clone. Run-on experiments indicate that transcriptional activation of these genes plays a major role in the control of their expression. Genomic hybridizations have been performed and indicate that the mRNAs corresponding to the cDNA clones are encoded by multigene families (6 to 20 genes).

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Citations

Apr 12, 2001·Plant Science : an International Journal of Experimental Plant Biology·Y IchinoseT Yamada
Jul 15, 2006·Molecular Plant-microbe Interactions : MPMI·Alban JacquesSerge Kauffmann
Nov 4, 2006·Cellular Microbiology·Sabine DesenderFlorence Val
Mar 29, 2007·The New Phytologist·Gui-Lan DuanYong-Guan Zhu
Jul 27, 2006·The New Phytologist·David LecourieuxAlain Pugin
Dec 10, 2016·Bulletin of Environmental Contamination and Toxicology·Xixiang YinJianwei Gao
Aug 14, 2019·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Pawan ShuklaPulugurtha Bharadwaja Kirti

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