European Journal of Plant Pathology (2022) 162, 981-987

Akira Kawaguchi and Yoshiteru Noutoshi (2022)
Insight into inducing disease resistance with Allorhizobium vitis strain ARK-1, a biological control agent against grapevine crown gall disease
European Journal of Plant Pathology 162 (4), 981-987
Abstract: The nonpathogenic strain ARK-1 of Allorhizobium vitis has an antagonistic activity toward the tumorigenic (Ti) strain of A. vitis and works as a biocontrol agent, but the biocontrol mechanism in plants needs to be better understood. Inoculations of ARK-1 or Ti strain induced expression of marker genes for defense-related phytohormones such as salicylic acid, jasmonic acid, and ethylene in grapevine within 72 h post-inoculation (hpi). Inoculation of Ti strain 5 days after ARK-1 pre-inoculation induced expression of the marker genes except for the LOX-9 gene in a similar manner to those without the pre-inoculation, suggesting that ARK-1 did not induce typical acquired systemic resistance. However, the transcript of LOX-9 was detected at 24 and 48 hpi with Ti strain when ARK-1 was pre-inoculated, unlike the uninoculated condition. ARK-1 primed the induction of certain defense genes, and it may take part in its biocontrol activity.
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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:
molecular biology - genes

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Pest and/or beneficial records:

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