2015
DOI: 10.1007/s10658-015-0730-8
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Biological control agent Agrobacterium vitis strain ARK-1 suppresses expression of the virD2 and virE2 genes in tumorigenic A. vitis

Abstract: A nonpathogenic strain of Agrobacterium (=Rhizobium) vitis, ARK-1, limits the development of crown gall of grapevine (Vitis vinifera L.). Coinoculation of grapevine shoots with ARK-1 and the tumorigenic (Ti) strain VAT03-9 at a 1:1 cell ratio resulted in significantly lower expression of the virulence genes virD2 and virE2 of VAT03-9 1 day after inoculation (dai) compared with expression levels when shoots were inoculated only with VAT03-9. In contrast, nonpathogenic A. vitis strain VAR06-30, which does not li… Show more

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Cited by 20 publications
(32 citation statements)
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References 24 publications
(29 reference statements)
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“…4 ) and was not an antagonist for grapevine crown gall. 27 ) We are interested to clarify the mechanism of control of ARK-1 and why ARK-1 is overwhelmingly powerful in suppressing tumor formation compared with K84 and VAR06-30, and we discuss it in a later section.…”
Section: Screening Tests For Biological Control Agentsmentioning
confidence: 99%
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“…4 ) and was not an antagonist for grapevine crown gall. 27 ) We are interested to clarify the mechanism of control of ARK-1 and why ARK-1 is overwhelmingly powerful in suppressing tumor formation compared with K84 and VAR06-30, and we discuss it in a later section.…”
Section: Screening Tests For Biological Control Agentsmentioning
confidence: 99%
“…4 ), and a St-CuSO 4 mutant obtained by growing VAR06-30 on St-CuSO 4 -PSA medium was called VAR06-30sc. 27 ) R. vitis (Ti) strain VAT03-9 was a tumorigenic strain isolated from grapevine, 13 ) and VAT03-9n was a nalidixic acid (nal)-resistant mutant (nal-mutant) obtained by growing on nal-PSA medium. 27 ) The three mutants grew on the St-CuSO 4 -PSA medium (ARK-1sc and VAR06-30sc) and the nal-PSA medium (VAT03-9n) at rates similar to the wild-type in PSA medium.…”
Section: Understanding the Mechanism Of Strain Ark-1mentioning
confidence: 99%
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“…4), and a St-CuSO 4 mutant obtained by growing VAR06-30 on St-CuSO 4 -PSA medium was called VAR06-30sc. 27) R. vitis (Ti) strain VAT03-9 was a tumorigenic strain isolated from grapevine, 13) and VAT03-9n was a nalidixic acid (nal)-resistant mutant (nal-mutant) obtained by growing on nal-PSA medium.…”
Section: 2mentioning
confidence: 99%
“…27) Inoculation to grapevine seedlings took place with one of three different cell suspensions: 1) ARK-1sc and VAT03-9n (1 : 1 ratio); and 2) VAR06-30sc and VAT03-9n (1 : 1 ratio). Additional experimental runs consisted of grapevine seedlings inoculated with the each cell suspension of ARK-1sc, VAR06-30sc, or VAT03-9n to demonstrate the population dynamics with single strain inoculation.…”
Section: 2mentioning
confidence: 99%