Journal of General Plant Pathology (2007) 73, 133-138

Akira Kawaguchi, Koji Inoue and Hideo Nasu (2007)
Biological control of grapevine crown gall by nonpathogenic Agrobacterium vitis strain VAR03-1
Journal of General Plant Pathology 73 (2), 133-138
Abstract: A nonpathogenic strain of Agrobacterium vitis VAR03-1 was tested as a biological control agent against crown gall of grapevine (Vitis vinifera L.). A mixture of the nonpathogenic strain VAR03-1 and a tumorigenic strain G-Ag-27 of A. vitis at cell ratios of 1 : 1, 3 : 1, 9 : 1, and 99 : 1 significantly inhibited gall formation and size on stems of tomato (Lycopersicon esculentum Mill.). Strain VAR03-1 also inhibited gall formation on stems of both tomato and grapevine at a 1 : 1 cell ratio with several tumorigenic A. vitis strains isolated from different fields of grapevine in Japan. In biological control tests, when roots of grapevine and tomato seedlings were soaked in a cell suspension of strain VAR03-1 for 24 h before a 1-h soaking in a cell suspension of the pathogen and subsequent planting in pots of infested soil, strain VAR03-1 significantly reduced the incidence of gall formation on both plants.
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Link to article at publishers website
Database assignments for author(s): Akira Kawaguchi

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
evaluation - screening - selection

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Allorhizobium vitis	Grapevine (Vitis)
Allorhizobium vitis (antagonist)	Allorhizobium vitis	Grapevine (Vitis)