Abstract
OBJECTIVE: To gain insights into the virulence suppressive mechanism of a nonpathogenic strain of Rhizobium vitis ARK-1, we co-inoculated ARK-1 with a tumorigenic (Ti) strain of R. vitis to examine the expression of two essential virulence genes (virA and virG) and one non-essential gene (virD3) of the Ti strain at the wound site of grapevine. RESULTS: Co-inoculation of ARK-1 with a Ti strain VAT03-9 at a 1:1 cell ratio into grapevine shoots resulted in significantly lower expression of the virulence genes virA, virD3, and virG of VAT03-9 at 1 day after inoculation compared with those when shoots were inoculated only with VAT03-9. ARK-1 was not able to catabolize acetosyringone, which is the plant-derived metabolites inducing the entire vir regulon in Ti strains, suggesting the direct effect of ARK-1 on the induction of broad range of vir genes of R. vitis Ti strains.
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Claims 2
Claim · model-written summary
Co-inoculation with ARK-1 significantly reduced VAT03-9 virA, virD3, and virG expression in grapevine shoots after one day.
- Treatment
- Co-inoculation of ARK-1 with a Ti strain VAT03-9 at a 1:1 cell ratioe0
- Interactor
- VAT03-9e0pathogen
- Second interactor
- ARK-1e0biocontrol_agent
- Outcome
- expression of the virulence genes virA, virD3, and virG of VAT03-9e0
- Direction
- lowere0
- Comparator
- shoots were inoculated only with VAT03-9e0
VitisOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Co-inoculation of ARK-1 with a Ti strain VAT03-9 at a 1:1 cell ratio into grapevine shoots resulted in significantly lower expression of the virulence genes virA, virD3, and virG of VAT03-9 at 1 day after inoculation compared with those when shoots were inoculated only with VAT03-9.”
e1“Rhizobium vitis ARK-1”
Claim · model-written summary
ARK-1 could not catabolize acetosyringone.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ARK-1 was not able to catabolize acetosyringone”
e1“at the wound site of grapevine”
The same questions in other papers
inoculation · molecular: expression · VitisPositive and negative results
9 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
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7 papers more in this group
See all 11 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.