Uncharted Diversity and Ecology of Saprolegniaceae (Oomycota) in Freshwater Environments

AbstractThe fungal-like family Saprolegniaceae (Oomycota), also called “water mold,” includes mostly aquatic saprophytes as well as notorious aquatic animal pathogens. Most studies on Saprolegniaceae have been biased toward pathogenic species that are important to aquaculture rather than saprotrophi...

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Main Authors: Bora Nam, Thuong T. T. Nguyen, Hyang Burm Lee, Sang Kyu Park, Young-Joon Choi
Format: Article
Language:English
Published: Taylor & Francis Group 2022-09-01
Series:Mycobiology
Subjects:
Online Access:https://www.tandfonline.com/doi/10.1080/12298093.2022.2121496
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author Bora Nam
Thuong T. T. Nguyen
Hyang Burm Lee
Sang Kyu Park
Young-Joon Choi
author_facet Bora Nam
Thuong T. T. Nguyen
Hyang Burm Lee
Sang Kyu Park
Young-Joon Choi
author_sort Bora Nam
collection DOAJ
description AbstractThe fungal-like family Saprolegniaceae (Oomycota), also called “water mold,” includes mostly aquatic saprophytes as well as notorious aquatic animal pathogens. Most studies on Saprolegniaceae have been biased toward pathogenic species that are important to aquaculture rather than saprotrophic species, despite the latter’s crucial roles in carbon cycling of freshwater ecosystems. Few attempts have been made to study the diversity and ecology of Saprolegniaceae; thus, their ecological role is not well-known. During a survey of oomycetes between 2016 and 2021, we investigated the diversity and distribution of culturable Saprolegniaceae species in freshwater ecosystems of Korea. In the present study, members of Saprolegniaceae were isolated and identified at species level based on their cultural, morphological, and molecular phylogenetic analyses. Furthermore, substrate preference and seasonal dynamics for each were examined. Most of the species were previously reported as animal pathogens; however, in the present study, they were often isolated from other freshwater substrates, such as plant debris, algae, water, and soil sediment. The relative abundance of Saprolegniaceae was higher in the cold to cool season than that in the warm to hot season of Korea. This study enhances our understanding of the diversity and ecological attributes of Saprolegniaceae in freshwater ecosystems.
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spelling doaj.art-8748471719f743a788a44e4d72cf529d2023-07-24T06:38:17ZengTaylor & Francis GroupMycobiology1229-80932092-93232022-09-0150532634410.1080/12298093.2022.2121496Uncharted Diversity and Ecology of Saprolegniaceae (Oomycota) in Freshwater EnvironmentsBora Nam0Thuong T. T. Nguyen1Hyang Burm Lee2Sang Kyu Park3Young-Joon Choi4Department of Biological Science, College of Natural Sciences, Kunsan National University, Gunsan, South KoreaDepartment of Agricultural Biological Chemistry, College of Agriculture & Life Sciences, Environmental Microbiology Lab, Chonnam National University, Gwangju, South KoreaDepartment of Agricultural Biological Chemistry, College of Agriculture & Life Sciences, Environmental Microbiology Lab, Chonnam National University, Gwangju, South KoreaNakdonggang National Institute of Biological Resources (NNIBR), Sangju, South KoreaDepartment of Biological Science, College of Natural Sciences, Kunsan National University, Gunsan, South KoreaAbstractThe fungal-like family Saprolegniaceae (Oomycota), also called “water mold,” includes mostly aquatic saprophytes as well as notorious aquatic animal pathogens. Most studies on Saprolegniaceae have been biased toward pathogenic species that are important to aquaculture rather than saprotrophic species, despite the latter’s crucial roles in carbon cycling of freshwater ecosystems. Few attempts have been made to study the diversity and ecology of Saprolegniaceae; thus, their ecological role is not well-known. During a survey of oomycetes between 2016 and 2021, we investigated the diversity and distribution of culturable Saprolegniaceae species in freshwater ecosystems of Korea. In the present study, members of Saprolegniaceae were isolated and identified at species level based on their cultural, morphological, and molecular phylogenetic analyses. Furthermore, substrate preference and seasonal dynamics for each were examined. Most of the species were previously reported as animal pathogens; however, in the present study, they were often isolated from other freshwater substrates, such as plant debris, algae, water, and soil sediment. The relative abundance of Saprolegniaceae was higher in the cold to cool season than that in the warm to hot season of Korea. This study enhances our understanding of the diversity and ecological attributes of Saprolegniaceae in freshwater ecosystems.https://www.tandfonline.com/doi/10.1080/12298093.2022.2121496Freshwater ecosystemGeolegniaLeptolegniaSaprolegniaseasonalitysubstrate preference
spellingShingle Bora Nam
Thuong T. T. Nguyen
Hyang Burm Lee
Sang Kyu Park
Young-Joon Choi
Uncharted Diversity and Ecology of Saprolegniaceae (Oomycota) in Freshwater Environments
Mycobiology
Freshwater ecosystem
Geolegnia
Leptolegnia
Saprolegnia
seasonality
substrate preference
title Uncharted Diversity and Ecology of Saprolegniaceae (Oomycota) in Freshwater Environments
title_full Uncharted Diversity and Ecology of Saprolegniaceae (Oomycota) in Freshwater Environments
title_fullStr Uncharted Diversity and Ecology of Saprolegniaceae (Oomycota) in Freshwater Environments
title_full_unstemmed Uncharted Diversity and Ecology of Saprolegniaceae (Oomycota) in Freshwater Environments
title_short Uncharted Diversity and Ecology of Saprolegniaceae (Oomycota) in Freshwater Environments
title_sort uncharted diversity and ecology of saprolegniaceae oomycota in freshwater environments
topic Freshwater ecosystem
Geolegnia
Leptolegnia
Saprolegnia
seasonality
substrate preference
url https://www.tandfonline.com/doi/10.1080/12298093.2022.2121496
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