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Labyrinthulomycota from Brazilian mangrove swamps and coastal waters

  • Marcela Castilho Boro

    Marcela Castilho Boro is a biologist. She is working at the “Instituto de Botânica” of State of São Paulo as research assistant, where nowadays is the curator of the Fungal Culture Collection. She earned her Master’s degree from “Instituto Biológico” in plant health and food and environmental security in agribusiness. Currently, she is finishing her PhD thesis on morphology/molecular diversity and quantification of fatty acids of the Labyrinthulomycota isolated from Brazilian mangrove swamps and coastal waters belonging to Atlantic rainforest.

     ORCID logo EMAIL logo     , Ricardo Harakava

    Ricardo Harakava is a molecular biologist with an emphasis on plant pathology. Since 1997 he works as a scientific researcher at “Instituto Biológico”, São Paulo, Brazil. He earned his PhD in plant pathology at the University of Florida in 2000. He applies molecular tools to solve a variety of problems in plant pathology such as disease diagnosis, identification and taxonomy of plant pathogens and pests, and plant-microbe interactions.

         and Carmen Lidia Amorim Pires-Zottarelli

    Carmen Lidia Amorim Pires-Zottarelli is a mycologist with more than 30 years of experience. She is a researcher of the “Instituto de Botânica”, São Paulo, Brazil, focusing her studies on taxonomy, systematic and ecology of the zoosporic fungi and fungus like organisms.
Published/Copyright: January 10, 2018
Botanica Marina
From the journal Botanica Marina Volume 61 Issue 1

Abstract

The phylum Labyrinthulomycota is composed of three distinct groups of fungus-like organisms: the labyrinthulids, the thraustochytrids and the aplanochytrids. They are present in marine and brackish waters as saprobes and/or parasites. In recent years, there was an increased interest in studying these organisms due to the ability that some have to produce large amounts of lipids, particularly polyunsaturated fatty acids. However, in spite of their importance and diversity, in Brazil only four species were reported in the 1970s. Due to their ecological and economic importance globally and the limited knowledge of them in the country, this study aimed to evaluate the diversity of the Labyrinthulomycota in mangrove swamps and coastal waters of São Paulo State, Brazil. The specimens were isolated from water and leaf samples using different methodologies, and purified in an agar medium prepared with half-strength sterile seawater, peptone, yeast extract and glucose. After purification, they were identified by means of morphology and phylogenetic analysis of the SSU rDNA region. A total of 193 specimens representing five genera were observed, 26 specimens were incorporated into the culture collections and 29 sequences of the SSU rDNA region were deposited in GenBank. Labyrinthula sp., Aurantiochytrium sp., Parietichytrium sarkarianum and Thraustochytrium striatum are new records for Brazil, contributing to our knowledge of the diversity of fungus-like organisms in the country.

Keywords: Atlantic rainforest; Labyrinthulales; Thraustochytriales; zoosporic organisms

About the authors

Marcela Castilho Boro

Marcela Castilho Boro is a biologist. She is working at the “Instituto de Botânica” of State of São Paulo as research assistant, where nowadays is the curator of the Fungal Culture Collection. She earned her Master’s degree from “Instituto Biológico” in plant health and food and environmental security in agribusiness. Currently, she is finishing her PhD thesis on morphology/molecular diversity and quantification of fatty acids of the Labyrinthulomycota isolated from Brazilian mangrove swamps and coastal waters belonging to Atlantic rainforest.

Ricardo Harakava

Ricardo Harakava is a molecular biologist with an emphasis on plant pathology. Since 1997 he works as a scientific researcher at “Instituto Biológico”, São Paulo, Brazil. He earned his PhD in plant pathology at the University of Florida in 2000. He applies molecular tools to solve a variety of problems in plant pathology such as disease diagnosis, identification and taxonomy of plant pathogens and pests, and plant-microbe interactions.

Carmen Lidia Amorim Pires-Zottarelli

Carmen Lidia Amorim Pires-Zottarelli is a mycologist with more than 30 years of experience. She is a researcher of the “Instituto de Botânica”, São Paulo, Brazil, focusing her studies on taxonomy, systematic and ecology of the zoosporic fungi and fungus like organisms.

  1. Acknowledgments: We are indebted to Dr. Agostina Virginia Marano and MSc Ana Lucia de Jesus for help in the collection and processing of samples and to Manoel Osório Neves Júnior for his valuable help during sampling. We also thank the “Instituto Florestal” for the permission given to collect samples at PEIC and FAPESP (“Fundação de Amparo à Pesquisa do Estado de São Paulo”) for the financial support given to C.L.A. Pires-Zottarelli (Process no. 2012/50222-7).

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Received: 2017-7-4
Accepted: 2017-12-6
Published Online: 2018-1-10
Published in Print: 2018-1-26

©2018 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. In this issue
  3. Physiology and ecology
  4. Hydrodynamics in Indo-Pacific seagrasses with a focus on short canopies
  5. Thermal adaptation in a marine-derived tropical strain of Fusarium equiseti and polar strains of Pseudogymnoascus spp. under different nutrient sources
  6. Taxonomy/phylogeny and biogeography
  7. Expanding known dinoflagellate distributions: investigations of slurry cultures from Caspian Sea sediment
  8. The Chlorophytes of Curaçao (Caribbean): a revised checklist for the south-west coast
  9. Taxonomic reassessment of the Indo-Pacific Scytosiphonaceae (Phaeophyceae): Hydroclathrus rapanuii sp. nov. and Chnoospora minima from Easter Island, with proposal of Dactylosiphon gen. nov. and Pseudochnoospora gen. nov.
  10. Labyrinthulomycota from Brazilian mangrove swamps and coastal waters
  11. Phylogenetic survey and antimicrobial activity of cultivable fungi associated with five scleractinian coral species in the South China Sea
  12. First report of the invasive macroalga Acrothamnion preissii (Rhodophyta, Ceramiales) in the Atlantic Ocean
  13. Chemistry and applications
  14. Monthly variation in the chemical composition and biological activity of Sargassum horridum
https://doi.org/10.1515/bot-2017-0052
Keywords for this article
Atlantic rainforest; Labyrinthulales; Thraustochytriales; zoosporic organisms

Articles in the same Issue

  1. Frontmatter
  2. In this issue
  3. Physiology and ecology
  4. Hydrodynamics in Indo-Pacific seagrasses with a focus on short canopies
  5. Thermal adaptation in a marine-derived tropical strain of Fusarium equiseti and polar strains of Pseudogymnoascus spp. under different nutrient sources
  6. Taxonomy/phylogeny and biogeography
  7. Expanding known dinoflagellate distributions: investigations of slurry cultures from Caspian Sea sediment
  8. The Chlorophytes of Curaçao (Caribbean): a revised checklist for the south-west coast
  9. Taxonomic reassessment of the Indo-Pacific Scytosiphonaceae (Phaeophyceae): Hydroclathrus rapanuii sp. nov. and Chnoospora minima from Easter Island, with proposal of Dactylosiphon gen. nov. and Pseudochnoospora gen. nov.
  10. Labyrinthulomycota from Brazilian mangrove swamps and coastal waters
  11. Phylogenetic survey and antimicrobial activity of cultivable fungi associated with five scleractinian coral species in the South China Sea
  12. First report of the invasive macroalga Acrothamnion preissii (Rhodophyta, Ceramiales) in the Atlantic Ocean
  13. Chemistry and applications
  14. Monthly variation in the chemical composition and biological activity of Sargassum horridum
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