Words similar to vitis
Example sentences for: vitis
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Here we present experiments demonstrating the TFX-sensitivity of a range of A. vitis strains and the effect of the TFX production and resistance phenotypes on the expression of biological control of crown gall using the model plant Nicotiana glauca.
As expected based on previous results [ 12 ] , the tested Agrobacterium vitis strains were sensitive to TFX-producing strains.
Trifolitoxin production enhances rhizosphere competitiveness of Rhizobium etli CE3 (pT2TFXK) in sterile soil and enhances nodulation efficiency in non-sterile soil when compared to a TFX-sensitive strain [ 20 ] . Trifolitoxin production also increases bean nodulation competitiveness of Rhizobium etli CE3 in the presence of indigenous rhizobia under agricultural conditions [ 15 ] . Field application of R. etli CE3 (pT2TFXK) dramatically reduced the diversity of indigenous α-proteobacteria in the bean rhizosphere without affecting unrelated species [ 13 ] . Thus, TFX production by A. vitis F2/5 should enhance the competitiveness and aid in establishment of this beneficial strain in the rhizosphere.
Strains that are susceptible to the antibiotic in vitro, such as A. vitis strain CG78, are able to infect the plant in the presence of F2/5 [ 3 ] , and Tn5 mutants of F2/5 lacking F2/5 antibiotic production appear to be unaffected in crown gall biological control [ 4 ] . Biological control by F2/5 is grape-specific, as F2/5 is not effective on non-grapevine host plants such as Nicotiana glauca.
Strain F2/5 also produces an A. vitis -specific antibiotic in vitro, but this antibiotic is not involved in disease control [ 4 ] . Thus, the addition of TFX to F2/5 is a successful example of pyramiding unrelated disease control mechanisms and clearly demonstrates that individual antibiotics can be effectively developed as a mechanism of disease control.
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