Abstract
Aureobasidium pullulans is a yeast-like fungus found on the surface of the grape berries that has been proven to act as a biocontrol agent for the management of grey mould disease caused by Botrytis cinerea. In this work, an indigenous strain of A. pullulans isolated from grape berries and selected according to the in vitro activity against B. cinerea, was used in vineyards of the winery where it originated, in comparison with a commercial product containing two A. pullulans strains with the aim of assessing its effectiveness as a biocontrol agent. The experimental design included daily meteorological data registration and the early defoliation of grapevines as treatments. The monitoring of A. pullulans strains on grape berries by plate counts and molecular methods as well as of B. cinerea symptoms on grape bunches was performed in the different trials from the end of flowering to the harvest time. Results highlighted that although no significant differences (p < 0.05) in the occurrence of B. cinerea were detected according to different treatments, the mean incidence of symptomatic berries ranged from 7 to 16%, with the lowest values recorded in bunches treated with the indigenous A. pullulans strain. The efficacy of the biocontrol agent was affected more by meteorological conditions than the defoliation practice.
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Claims 3
Claim · model-written summary
Treatments did not differ significantly in Botrytis occurrence.
- Taxon
- Grape Berriest0
- Treatment
- different treatmentse0
- Interactor
- B. cinerea
Botrytis cinereae0pathogen - Outcome
- occurrence of B. cinereae0
- Direction
- no significant differencese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no significant differences (p < 0.05) in the occurrence of B. cinerea were detected according to different treatments”
t0“Indigenous Aureobasidium pullulans Strains as Biocontrol Agents of Botrytis cinerea on Grape Berries”
Claim · model-written summary
Symptomatic berry incidence ranged from 7 to 16%, lowest with indigenous A. pullulans.
- Taxon
- Grape Berriest0
- Treatment
- indigenous A. pullulans straine0
- Interactor
- Botrytis cinereaBotrytis cinereat0pathogene0
- Second interactor
- A. pullulans
Aureobasidium pullulanse0biocontrol_agent - Outcome
- incidence of symptomatic berriese0
- Direction
- loweste0
- Value
- 7 to 16%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the mean incidence of symptomatic berries ranged from 7 to 16%, with the lowest values recorded in bunches treated with the indigenous A. pullulans strain”
t0“Indigenous Aureobasidium pullulans Strains as Biocontrol Agents of Botrytis cinerea on Grape Berries”
Claim · model-written summary
Meteorological conditions affected biocontrol efficacy more than defoliation.
- Taxon
- Grape Berriest0
- Treatment
- defoliation practicee0
- Outcome
- efficacy of the biocontrol agente0
- Qualifier
- meteorological conditionse0
Not reportedDirection
Verbatim
e0“The efficacy of the biocontrol agent was affected more by meteorological conditions than the defoliation practice”
t0“Indigenous Aureobasidium pullulans Strains as Biocontrol Agents of Botrytis cinerea on Grape Berries”