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Peer-reviewedCC0PLOS One

Phytophthora diversity in urban forested streams of Fairfax County, Virginia, with Phytophthora matreminventam sp. nov. as the maternal parent of P. ×stagnum

  • Devin Bily1
  • Xiao Yang2
  • Tashi Gyatso1
  • Katherine Layton3
  1. 1Department of Plant Pathology, Virginia Department of Agriculture and Consumer Services, Richmond, Virginia, United States of America
  2. 2Department of Plant Industry, Plant and Pest Diagnostic Clinic, Clemson University, Pendleton, South Carolina, United States of America
  3. 3Fairfax County Urban & Community Forestry Division, Fairfax, Virginia, United States of America
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Abstract

Phytophthora diversity in urban forested freshwater systems of Fairfax County, Virginia was investigated by sampling 15 streams in the spring and fall from 2021 to 2024. A total of 163 isolates were identified. Based on multilocus sequence and phylogenetic analyses, they were categorized into 14 taxa belonging to 7 Phytophthora subclades including P. pseudocitrophthora in subclade 2a, P. pini in subclade 2c, P. chlamydospora, P. gonapodyides, P. matreminventam sp. nov., P. taxon bitahaiensis, and P. t. sylvatica in subclade 6b, P. lacustris in subclade 6d, P. honggalleglyana, P. irrigata, P. virginiana sensu lato, and P. sp. × Hennops in subclade 9a, P. t. polonicoides in subclade 9b, and P. intercalaris in subclade 10c. Notably, P. matreminventam sp. nov. named in this study was determined to be the maternal parent of P. × stagnum based on their unique genetic traits. Although a few species recovered in this study reportedly possess innate pathogenicity to woody plants, no significant symptoms of Phytophthora diseases were observed in the nearby forests at the sampling sites.

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Cite

BibTeXRIS
BibTeX
@article{bily2026phytophthora,
  title = {{Phytophthora diversity in urban forested streams of Fairfax County, Virginia, with Phytophthora matreminventam sp. nov. as the maternal parent of P. ×stagnum}},
  author = {Devin Bily and Xiao Yang and Tashi Gyatso and Katherine Layton},
  journal = {PLOS One},
  year = {2026},
  month = oct,
  doi = {10.1371/journal.pone.0359718},
  url = {https://doi.org/10.1371/journal.pone.0359718},
  note = {CC0},
}
RIS
TY  - JOUR
TI  - Phytophthora diversity in urban forested streams of Fairfax County, Virginia, with Phytophthora matreminventam sp. nov. as the maternal parent of P. ×stagnum
AU  - Devin Bily
AU  - Xiao Yang
AU  - Tashi Gyatso
AU  - Katherine Layton
PY  - 2026
DA  - 2026/10/27
JO  - PLOS One
DO  - 10.1371/journal.pone.0359718
UR  - https://doi.org/10.1371/journal.pone.0359718
AB  - Phytophthora diversity in urban forested freshwater systems of Fairfax County, Virginia was investigated by sampling 15 streams in the spring and fall from 2021 to 2024. A total of 163 isolates were identified. Based on multilocus sequence and phylogenetic analyses, they were categorized into 14 taxa belonging to 7 Phytophthora subclades including P. pseudocitrophthora in subclade 2a, P. pini in subclade 2c, P. chlamydospora, P. gonapodyides, P. matreminventam sp. nov., P. taxon bitahaiensis, and P. t. sylvatica in subclade 6b, P. lacustris in subclade 6d, P. honggalleglyana, P. irrigata, P. virginiana sensu lato, and P. sp. × Hennops in subclade 9a, P. t. polonicoides in subclade 9b, and P. intercalaris in subclade 10c. Notably, P. matreminventam sp. nov. named in this study was determined to be the maternal parent of P. × stagnum based on their unique genetic traits. Although a few species recovered in this study reportedly possess innate pathogenicity to woody plants, no significant symptoms of Phytophthora diseases were observed in the nearby forests at the sampling sites.
SN  - 1932-6203
ER  -