Introduction of Aureobasidium pullulans to the Phyllosphere of Organically Grown Strawberries with Focus on Its Establishment and Interactions with the Resident Microbiome

Currently, there is little knowledge of the establishment of repeatedly applied biological control agents (BCAs) in the phyllosphere of plants and, in particular, their interactions with the resident microbiome. Under field conditions, the BCA Aureobasidium pullulans was applied as a model organism...

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Main Authors: Annette Reineke, Monika Bischoff-Schaefer, Erika Krüger, Beatrix W. Alsanius, Justine Sylla, Walter Wohanka
Format: Article
Language:English
Published: MDPI AG 2013-10-01
Series:Agronomy
Subjects:
Online Access:http://www.mdpi.com/2073-4395/3/4/704
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author Annette Reineke
Monika Bischoff-Schaefer
Erika Krüger
Beatrix W. Alsanius
Justine Sylla
Walter Wohanka
author_facet Annette Reineke
Monika Bischoff-Schaefer
Erika Krüger
Beatrix W. Alsanius
Justine Sylla
Walter Wohanka
author_sort Annette Reineke
collection DOAJ
description Currently, there is little knowledge of the establishment of repeatedly applied biological control agents (BCAs) in the phyllosphere of plants and, in particular, their interactions with the resident microbiome. Under field conditions, the BCA Aureobasidium pullulans was applied as a model organism to organically grown strawberries during two subsequent years (2011, 2012), either as single strain treatment or with the co-application of the entomopathogenic fungus Beauveria bassiana. Fungal and bacterial communities of strawberry leaves were investigated by means of plate counts and 454 pyrosequencing. The establishment of the introduced A. pullulans strains considerably differed between the two years, presumably due to distinct environmental conditions. Short-term and long-term effects of BCA applications on the composition and diversity of fungal communities could be observed as a result of successful establishment of A. pullulans, in 2011, showing, for instance, reduced diversity of fungal communities by competitive displacement shortly after BCA introduction. Due to considerable dynamics in untreated resident microbial communities in the phyllosphere in general, however, we suggest that even the effects caused by the applied BCA preparations in 2011 are negligible under practical conditions.
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spelling doaj.art-00b7c5d37f584616ba4c64aa1e6127422022-12-21T19:48:02ZengMDPI AGAgronomy2073-43952013-10-013470473110.3390/agronomy3040704Introduction of Aureobasidium pullulans to the Phyllosphere of Organically Grown Strawberries with Focus on Its Establishment and Interactions with the Resident MicrobiomeAnnette ReinekeMonika Bischoff-SchaeferErika KrügerBeatrix W. AlsaniusJustine SyllaWalter WohankaCurrently, there is little knowledge of the establishment of repeatedly applied biological control agents (BCAs) in the phyllosphere of plants and, in particular, their interactions with the resident microbiome. Under field conditions, the BCA Aureobasidium pullulans was applied as a model organism to organically grown strawberries during two subsequent years (2011, 2012), either as single strain treatment or with the co-application of the entomopathogenic fungus Beauveria bassiana. Fungal and bacterial communities of strawberry leaves were investigated by means of plate counts and 454 pyrosequencing. The establishment of the introduced A. pullulans strains considerably differed between the two years, presumably due to distinct environmental conditions. Short-term and long-term effects of BCA applications on the composition and diversity of fungal communities could be observed as a result of successful establishment of A. pullulans, in 2011, showing, for instance, reduced diversity of fungal communities by competitive displacement shortly after BCA introduction. Due to considerable dynamics in untreated resident microbial communities in the phyllosphere in general, however, we suggest that even the effects caused by the applied BCA preparations in 2011 are negligible under practical conditions.http://www.mdpi.com/2073-4395/3/4/704biological control agents: BCAsmicrobial communitiesorganic farmingplate counts454 pyrosequencing
spellingShingle Annette Reineke
Monika Bischoff-Schaefer
Erika Krüger
Beatrix W. Alsanius
Justine Sylla
Walter Wohanka
Introduction of Aureobasidium pullulans to the Phyllosphere of Organically Grown Strawberries with Focus on Its Establishment and Interactions with the Resident Microbiome
Agronomy
biological control agents: BCAs
microbial communities
organic farming
plate counts
454 pyrosequencing
title Introduction of Aureobasidium pullulans to the Phyllosphere of Organically Grown Strawberries with Focus on Its Establishment and Interactions with the Resident Microbiome
title_full Introduction of Aureobasidium pullulans to the Phyllosphere of Organically Grown Strawberries with Focus on Its Establishment and Interactions with the Resident Microbiome
title_fullStr Introduction of Aureobasidium pullulans to the Phyllosphere of Organically Grown Strawberries with Focus on Its Establishment and Interactions with the Resident Microbiome
title_full_unstemmed Introduction of Aureobasidium pullulans to the Phyllosphere of Organically Grown Strawberries with Focus on Its Establishment and Interactions with the Resident Microbiome
title_short Introduction of Aureobasidium pullulans to the Phyllosphere of Organically Grown Strawberries with Focus on Its Establishment and Interactions with the Resident Microbiome
title_sort introduction of aureobasidium pullulans to the phyllosphere of organically grown strawberries with focus on its establishment and interactions with the resident microbiome
topic biological control agents: BCAs
microbial communities
organic farming
plate counts
454 pyrosequencing
url http://www.mdpi.com/2073-4395/3/4/704
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