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. 2020 Jun 17;10:9801. doi: 10.1038/s41598-020-66210-7

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Univariate PPA of the overall symptomatic plants in the four vineyards of the Marche region using the combined replicates. Bold line, pair-correlation function g(r); dotted line, expected value under the null model (i.e., complete spatial randomness); shaded areas, non-significant (i.e., random) distributions representing 2.5th and 97.5th percentiles for g(r), from 999 Monte Carlo permutations. Insets: Results of each site separately.