Reproducing plant microbiome research reveals site and time as key drivers of apple tree phyllosphere bacterial communities

Abstract Manipulating plant microbiomes is foreseen as a key biocontrol avenue to tackle the accelerating challenges of global change in agriculture. Several recent studies have identified the spatiotemporal dynamics of phyllosphere microbial communities, stressing the need to understand plant micro...

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Main Authors: Sophie Boutin, Isabelle Laforest-Lapointe
Format: Article
Language:English
Published: Nature Portfolio 2025-07-01
Series:Scientific Reports
Subjects:
Online Access:https://doi.org/10.1038/s41598-025-10729-0
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author Sophie Boutin
Isabelle Laforest-Lapointe
author_facet Sophie Boutin
Isabelle Laforest-Lapointe
author_sort Sophie Boutin
collection DOAJ
description Abstract Manipulating plant microbiomes is foreseen as a key biocontrol avenue to tackle the accelerating challenges of global change in agriculture. Several recent studies have identified the spatiotemporal dynamics of phyllosphere microbial communities, stressing the need to understand plant microbiome drivers to design efficient biocontrol interventions. Yet, these works are often performed on small sample counts, rarely provide sufficient information on the relative impact of time or local environment, and are seldom repeated to assess reproducibility. To address these limits, we performed a longitudinal sampling across multiple orchards of contrasting agricultural practices to study the ecological drivers of phyllosphere bacterial communities of apple tree (Malus domestica, Borkh.). We sampled up to eight apple cultivars at six orchards (three conventional, three organic) in the Eastern Townships (Canada) in 2022 and 2023. In contrast with common cross-sectional microbiome studies, our work builds on a two-year sampling design, thus allowing for the evaluation of the reproducibility of previous plant microbiome research. Our results support previous findings indicating that site and time are major drivers of apple tree bacterial community structure, yet their relative influence vary across the two sampling years. In addition, our data showed that leaf and flower bacterial alpha diversity is lower at organic sites compared to conventional sites. Overall, this study provides a comprehensive longitudinal multi-site study design highlighting the value of assessing reproducibility in plant microbiome studies and paving the way for future research in this field.
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spelling doaj-art-b1e331f1a2664e8091dc1f31a1b56fde2025-08-20T03:42:22ZengNature PortfolioScientific Reports2045-23222025-07-0115111510.1038/s41598-025-10729-0Reproducing plant microbiome research reveals site and time as key drivers of apple tree phyllosphere bacterial communitiesSophie Boutin0Isabelle Laforest-Lapointe1Département de biologie, Université de SherbrookeDépartement de biologie, Université de SherbrookeAbstract Manipulating plant microbiomes is foreseen as a key biocontrol avenue to tackle the accelerating challenges of global change in agriculture. Several recent studies have identified the spatiotemporal dynamics of phyllosphere microbial communities, stressing the need to understand plant microbiome drivers to design efficient biocontrol interventions. Yet, these works are often performed on small sample counts, rarely provide sufficient information on the relative impact of time or local environment, and are seldom repeated to assess reproducibility. To address these limits, we performed a longitudinal sampling across multiple orchards of contrasting agricultural practices to study the ecological drivers of phyllosphere bacterial communities of apple tree (Malus domestica, Borkh.). We sampled up to eight apple cultivars at six orchards (three conventional, three organic) in the Eastern Townships (Canada) in 2022 and 2023. In contrast with common cross-sectional microbiome studies, our work builds on a two-year sampling design, thus allowing for the evaluation of the reproducibility of previous plant microbiome research. Our results support previous findings indicating that site and time are major drivers of apple tree bacterial community structure, yet their relative influence vary across the two sampling years. In addition, our data showed that leaf and flower bacterial alpha diversity is lower at organic sites compared to conventional sites. Overall, this study provides a comprehensive longitudinal multi-site study design highlighting the value of assessing reproducibility in plant microbiome studies and paving the way for future research in this field.https://doi.org/10.1038/s41598-025-10729-0PhyllosphereSpatiotemporal dynamicsApple treeAgricultural practicesReproducibilityLongitudinal
spellingShingle Sophie Boutin
Isabelle Laforest-Lapointe
Reproducing plant microbiome research reveals site and time as key drivers of apple tree phyllosphere bacterial communities
Scientific Reports
Phyllosphere
Spatiotemporal dynamics
Apple tree
Agricultural practices
Reproducibility
Longitudinal
title Reproducing plant microbiome research reveals site and time as key drivers of apple tree phyllosphere bacterial communities
title_full Reproducing plant microbiome research reveals site and time as key drivers of apple tree phyllosphere bacterial communities
title_fullStr Reproducing plant microbiome research reveals site and time as key drivers of apple tree phyllosphere bacterial communities
title_full_unstemmed Reproducing plant microbiome research reveals site and time as key drivers of apple tree phyllosphere bacterial communities
title_short Reproducing plant microbiome research reveals site and time as key drivers of apple tree phyllosphere bacterial communities
title_sort reproducing plant microbiome research reveals site and time as key drivers of apple tree phyllosphere bacterial communities
topic Phyllosphere
Spatiotemporal dynamics
Apple tree
Agricultural practices
Reproducibility
Longitudinal
url https://doi.org/10.1038/s41598-025-10729-0
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