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Article

Grapevine Microbiota Reflect Diversity among Compartments and Complex Interactions within and among Root and Shoot Systems

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Department of Biology, Saint Louis University, 3507 Laclede Ave, St. Louis, MO 63103, USA
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Donald Danforth Plant Science Center, 975 North Warson Road, St. Louis, MO 63132, USA
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Division of Plant Sciences, University of Missouri, Agriculture Bldg, 52, Columbia, MO 65201, USA
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College of Agricultural Sciences Department of Food Science, The Pennsylvania State University, 326 Rodney A. Erickson Food Science Building, University Park, PA 16802, USA
*
Author to whom correspondence should be addressed.
Microorganisms 2021, 9(1), 92; https://doi.org/10.3390/microorganisms9010092
Received: 2 December 2020 / Revised: 30 December 2020 / Accepted: 31 December 2020 / Published: 2 January 2021
(This article belongs to the Section Plant Microbe Interactions)
Grafting connects root and shoot systems of distinct individuals, bringing microbial communities of different genotypes together in a single plant. How do root system and shoot system genotypes influence plant microbiota in grafted grapevines? To address this, we utilized clonal replicates of the grapevine ‘Chambourcin’, growing ungrafted and grafted to three different rootstocks in three irrigation treatments. Our objectives were to (1) characterize the microbiota (bacteria and fungi) of below-ground compartments (roots, adjacent soil) and above-ground compartments (leaves, berries), (2) determine how rootstock genotype, irrigation, and their interaction influences grapevine microbiota in different compartments, and (3) investigate abundance of microorganisms implicated in the late-season grapevine disease sour rot (Acetobacterales and Saccharomycetes). We found that plant compartment had the largest influence on microbial diversity. Neither rootstock genotype nor irrigation significantly influenced microbial diversity or composition. However, differential abundance of bacterial and fungal taxa varied as a function of rootstock and irrigation treatment; in particular, Acetobacterales and Saccharomycetes displayed higher relative abundance in berries of grapevines grafted to ‘1103P’ and ‘SO4’ rootstocks and varied across irrigation treatments. This study demonstrates that grapevine compartments retain distinct microbiota and identifies associations between rootstock genotypes, irrigation treatment, and the relative abundance of agriculturally relevant microorganisms in the berries. View Full-Text
Keywords: grafting; grapevines; rootstock; sour rot; plant compartments; bacteria; fungi grafting; grapevines; rootstock; sour rot; plant compartments; bacteria; fungi
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MDPI and ACS Style

Swift, J.F.; Hall, M.E.; Harris, Z.N.; Kwasniewski, M.T.; Miller, A.J. Grapevine Microbiota Reflect Diversity among Compartments and Complex Interactions within and among Root and Shoot Systems. Microorganisms 2021, 9, 92. https://doi.org/10.3390/microorganisms9010092

AMA Style

Swift JF, Hall ME, Harris ZN, Kwasniewski MT, Miller AJ. Grapevine Microbiota Reflect Diversity among Compartments and Complex Interactions within and among Root and Shoot Systems. Microorganisms. 2021; 9(1):92. https://doi.org/10.3390/microorganisms9010092

Chicago/Turabian Style

Swift, Joel F., Megan E. Hall, Zachary N. Harris, Misha T. Kwasniewski, and Allison J. Miller. 2021. "Grapevine Microbiota Reflect Diversity among Compartments and Complex Interactions within and among Root and Shoot Systems" Microorganisms 9, no. 1: 92. https://doi.org/10.3390/microorganisms9010092

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