Words similar to avirulent
Example sentences for: avirulent
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These details are presented in a model of the signaling network for induction of SAR, PR-1 gene expression and PR-5 gene expression by avirulent P. syringae bacteria (Figure 4).
The data is presented in Figure 3. At the one day time point, the double mutant showed significant impairment in PR-5 induction relative to wild type in response to either avirulent bacterial strain (Student's t test, P < 0.05).
The goals of this work were twofold: to use cDNA microarrays to characterize the primary response of intestinal epithelial cells to a well-studied intracellular pathogen, L. monocytogenes , and to try to identify host gene-expression programs which are induced by specific stages of the infection by comparing the wild-type expression profile to that of mutants which are either incapable of intracellular growth and thus avirulent, or which cannot initiate actin polymerization in host cell cytoplasm.
The HR occurs in response to infection with avirulent bacteria at levels of inoculum that cause a large percentage of leaf cells to undergo programmed cell death (PCD) [ 8 ] . In contrast to results with avrRpt2, P. syringae bacteria carrying the avirulence genes avrB , avrRpm1 , avrPphB or avrRps4 elicit an exaggerated HR relative to that on the wild-type Columbia parent [ 5 7 ] . In a study in which bacteria carrying avrB were chosen as a representative member of this class, in further contrast to results with avrRpt2 , these bacteria were capable of eliciting SAR and PR-1 induction on ndr1-1 mutant plants [ 4 ] .
As all strains of A. vitis tested were sensitive to TFX both in this work and in a previous study [ 12 ] , experiments were conducted to determine the effectiveness of a TFX-producing, avirulent strain of A. vitis in the prevention of crown gall caused a three strains of A. vitis.