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Halophytophthora fluviatilis Pathogenicity and Distribution along a Mediterranean-Subalpine Gradient
Halophytophthora species have been traditionally regarded as brackish water oomycetes; however, recent reports in inland freshwater call for a better understanding of their ecology and possible pathogenicity. We studied the distribution of Halophytophthora fluviatilis in 117 forest streams by metaba...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7913473/ https://www.ncbi.nlm.nih.gov/pubmed/33546355 http://dx.doi.org/10.3390/jof7020112 |
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author | Caballol, Maria Štraus, Dora Macia, Héctor Ramis, Xavier Redondo, Miguel Á. Oliva, Jonàs |
author_facet | Caballol, Maria Štraus, Dora Macia, Héctor Ramis, Xavier Redondo, Miguel Á. Oliva, Jonàs |
author_sort | Caballol, Maria |
collection | PubMed |
description | Halophytophthora species have been traditionally regarded as brackish water oomycetes; however, recent reports in inland freshwater call for a better understanding of their ecology and possible pathogenicity. We studied the distribution of Halophytophthora fluviatilis in 117 forest streams by metabarcoding river filtrates taken in spring and autumn and by direct isolation from floating leaves. Pathogenicity on six Fagaceae species and Alnus glutinosa was assessed by stem inoculations. The distribution of H. fluviatilis was correlated with high mean annual temperatures (>93.5% of reports in Ta > 12.2 °C) and low precipitation records. H. fluviatilis was therefore widely distributed in forest streams in a warm–dry climate, but it was mostly absent in subalpine streams. H. fluviatilis was primarily detected in autumn with few findings in spring (28.4% vs. 2.7% of streams). H. fluviatilis was able to cause small lesions on some tree species such as Quercus pubescens, Q. suber and A. glutinosa. Our findings suggest that H. fluviatilis may be adapted to warm and dry conditions, and that it does not pose a significant threat to the most common Mediterranean broadleaved trees. |
format | Online Article Text |
id | pubmed-7913473 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-79134732021-02-28 Halophytophthora fluviatilis Pathogenicity and Distribution along a Mediterranean-Subalpine Gradient Caballol, Maria Štraus, Dora Macia, Héctor Ramis, Xavier Redondo, Miguel Á. Oliva, Jonàs J Fungi (Basel) Article Halophytophthora species have been traditionally regarded as brackish water oomycetes; however, recent reports in inland freshwater call for a better understanding of their ecology and possible pathogenicity. We studied the distribution of Halophytophthora fluviatilis in 117 forest streams by metabarcoding river filtrates taken in spring and autumn and by direct isolation from floating leaves. Pathogenicity on six Fagaceae species and Alnus glutinosa was assessed by stem inoculations. The distribution of H. fluviatilis was correlated with high mean annual temperatures (>93.5% of reports in Ta > 12.2 °C) and low precipitation records. H. fluviatilis was therefore widely distributed in forest streams in a warm–dry climate, but it was mostly absent in subalpine streams. H. fluviatilis was primarily detected in autumn with few findings in spring (28.4% vs. 2.7% of streams). H. fluviatilis was able to cause small lesions on some tree species such as Quercus pubescens, Q. suber and A. glutinosa. Our findings suggest that H. fluviatilis may be adapted to warm and dry conditions, and that it does not pose a significant threat to the most common Mediterranean broadleaved trees. MDPI 2021-02-03 /pmc/articles/PMC7913473/ /pubmed/33546355 http://dx.doi.org/10.3390/jof7020112 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Caballol, Maria Štraus, Dora Macia, Héctor Ramis, Xavier Redondo, Miguel Á. Oliva, Jonàs Halophytophthora fluviatilis Pathogenicity and Distribution along a Mediterranean-Subalpine Gradient |
title | Halophytophthora fluviatilis Pathogenicity and Distribution along a Mediterranean-Subalpine Gradient |
title_full | Halophytophthora fluviatilis Pathogenicity and Distribution along a Mediterranean-Subalpine Gradient |
title_fullStr | Halophytophthora fluviatilis Pathogenicity and Distribution along a Mediterranean-Subalpine Gradient |
title_full_unstemmed | Halophytophthora fluviatilis Pathogenicity and Distribution along a Mediterranean-Subalpine Gradient |
title_short | Halophytophthora fluviatilis Pathogenicity and Distribution along a Mediterranean-Subalpine Gradient |
title_sort | halophytophthora fluviatilis pathogenicity and distribution along a mediterranean-subalpine gradient |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7913473/ https://www.ncbi.nlm.nih.gov/pubmed/33546355 http://dx.doi.org/10.3390/jof7020112 |
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