Journal of Plant Pathology (2021) 103, 295-298

Margarita Shternshis, Anzhela Asaturova, Tatyana Shpatova, Natalya Zhevnova and Anna Homyak (2021)
Promising Bacillus subtilis strains BZR 336g and BZR 517 for biocontrol of blackcurrant against Septoria leaf spot under unfavorable climate conditions
Journal of Plant Pathology 103 (1), 295-298
Abstract: Septoria leaf spot is the most serious blackcurrant disease in Western Siberia. Two Bacillus subtilis strains BZR 336g and BZR 517 isolated in geographically distant locality (south of Russia) were evaluated for the blackcurrant disease suppression in field experiments (Western Siberia). The field trials were conducted on two cultivars differed by their susceptibility to Septoria ribis in two consecutive years differed by environmental conditions. As a rule, plant treatment with bacterial suspensions (10⁵ and 10⁶ CFU/ml) significantly (P < 0.05) reduced the disease severity compared with the untreated blackcurrant plants. In some cases, the effect of bacterial strains was comparable to that of chemical fungicide Topaz, CE 0.1%. Biological control of blackcurrant disease caused by S. ribis depended on B. subtilis strain, concentration of bacterial suspension, plant cultivars, and weather conditions. For the first time, we showed that B. subtilis strains isolated in a region with warm climate effectively suppressed the main blackcurrant disease in geographically distant locality with cold climate.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Margarita V. Shternshis

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.
	Septoria ribis	Currant/gooseberry (Ribes)	Russia (W Asia)
Bacillus subtilis (antagonist)	Septoria ribis	Currant/gooseberry (Ribes)	Russia (W Asia)