Words similar to syringae
Example sentences for: syringae
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The biological inducer of SAR tested in these experiments was P. syringae bacteria carrying avrRpt2 . In contrast to ndr1 plants, npr1 plants do show the HR in response to P. syringae carrying avrRpt2 (data not shown).
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, 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 avirulent bacterial strain of P. syringae expressing the avrRpm1 gene elicits a marked HR in Col-0 plants, whereas the P. parasitica strain Emwa elicits a microscopic HR.
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).
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