Words similar to avr

Example sentences for: avr

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However, avrRpt2 was shown to differ markedly from the other characterized P. syringae avr genes in the responses it elicited on ndr1 mutant plants [ 4 5 7 ] . The apparent challenge to the hypothesis of co-regulation could have been because of the choice of an atypical avr gene.
The Arabidopsis ndr1-1 mutant showed drastically impaired induction of SAR and PR-1 gene expression in response to infection with Pseudomonas syringae bacteria carrying the avirulence ( avr ) gene avrRpt2 [ 4 ] . This mutant is also incapable of showing a hypersensitive response (HR) to these bacteria [ 5 6 ] except at very high levels of inoculum [ 7 ] . The HR is a macroscopic leaf collapse.
However, we have argued on the basis of results with ndr1 mutant plants that HR "triggering" in response to the avrRpt2 / RPS2 combination is weaker than that in response to avrB / RPM1 [ 4 ] . Weaker "triggering" results in a lower probability of individual cells undergoing PCD early in the HR, prior to the onset of potentiation caused by increased SA levels [ 4 12 ] . Signaling elicited by avrRpt2 clearly differs in many respects from that directed by the other avr genes.
PR-5 gene expression in spite of the absence of a functional avr gene, the absence of PCD, and mutations in both the NPR1 and NDR1 genes.
Therefore, SAR and PR gene expression of npr1 mutant plants were assessed in response to a second avr gene ( avrB ). Markedly different results were obtained.