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Bee-Vectored Aureobasidium pullulans for Biological Control of Gray Mold in Strawberry

Iqbal, Mudassir and Jutzeler, Matilda and França, Soraya and Wäckers, Felix and Andreasson, Erik and Stenberg, Johan A. (2022). Bee-Vectored Aureobasidium pullulans for Biological Control of Gray Mold in Strawberry. Phytopathology. 112 :2 , 232-237
[Research article]

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Abstract

Gray mold caused by Botrytis cinerea is a common postharvest disease in strawberries, reducing shelf life considerably. We investigated the potential of the yeast-like biocontrol fungus Aureobasidium pullulans (AP-SLU6) vectored by bumblebees (Bombus terrestris) in the Flying DoctorsVR system to inhibit the pathogen and increase the shelf life of harvested strawberries (cultivar Sonata). Using bumblebees as vectors of various biocontrol agents is becoming increasingly popular, but any potentially negative effects on bee performance have been understudied. Our results show that, over the 4-week period of the trial, the performance and activity of the bees were not negatively affected by A. pullulans. The bees successfully picked up the powder formulation; then, they carried and deposited it on the flowers. The vectoring of the biocontrol agent significantly reduced gray mold development on the harvested fruits by 45% and increased shelf life by 100% in comparison with control treatments. This suggests that the biocontrol fungus applied during flowering successfully reduced Botrytis infection and thus, effectively protected the fruits from gray mold. In addition, the bee-vectored application of the biocontrol agent was found to be significantly more effective than spray application because the latter may temporarily increase humidity around the flower, thereby creating a suitable environment for the pathogen to thrive. In summary, our study demonstrates that A. pullulans vectored by bumblebees can decrease gray mold infection and improve the shelf life of strawberries without adversely affecting the bees, thus providing a basis for the sustainable and efficient control of gray mold on strawberry.

Authors/Creators:Iqbal, Mudassir and Jutzeler, Matilda and França, Soraya and Wäckers, Felix and Andreasson, Erik and Stenberg, Johan A.
Title:Bee-Vectored Aureobasidium pullulans for Biological Control of Gray Mold in Strawberry
Series Name/Journal:Phytopathology
Year of publishing :2022
Volume:112
Number:2
Page range:232-237
Number of Pages:6
Publisher:AMER PHYTOPATHOLOGICAL SOC
ISSN:0031-949X
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
Keywords:Aureobasidium pullulans, biological control, Bombus terrestris, Botrytis cinerea, entomovectoring, Fragaria x ananassa, garden strawberry
URN:NBN:urn:nbn:se:slu:epsilon-p-116686
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-116686
Additional ID:
Type of IDID
DOI10.1094/PHYTO-05-21-0205-R
Web of Science (WoS)000772255000003
ID Code:27642
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Plant Protection Biology
Deposited By: SLUpub Connector
Deposited On:27 Apr 2022 12:25
Metadata Last Modified:27 Apr 2022 12:31

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