Effects of Cu(II) and Zn(II) on growth and cell morphology of thraustochytrids isolated from fallen mangrove leaves in Taiwan
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Yu-Chen Lin
Abstract
Three Schizochytrium species isolated from three mangrove sites in Taiwan, Erjen River in Kaohsiung (isolate EJ56), Yantian Ecological Park in Tainan (isolate YT90), and Chunan mangrove in Miaoli (isolate CN75), were screened for their tolerance to heavy metals. Two common heavy metal pollutants present in Taiwan rivers were used in this study: copper [Cu(II)] and zinc [Zn(II)]. Growth at varying concentrations of these heavy metals was assessed, as well as their effects on cell morphology. There was a significant reduction in growth of isolate YT90 exposed to minimal concentrations (0.5–8 ppm) of Cu(II) and Zn(II), and isolate CN75 exposed to Cu(II). Isolate EJ56 had growth comparable to the control at 0.5–8 ppm of Cu(II) and Zn(II). Tolerance of the test isolates varied between each of the heavy metals tested. YT90 was most tolerant to Cu(II), and CN75 to Zn(II). Light and scanning electron micrographs of Schizochytrium cells exposed to high levels of heavy metals (>32 ppm) showed formation of holes in the cell wall, as well as shrinkage and general deformation of the cell structure. At the highest heavy metal concentrations tested (256– 384 ppm), cell lysis occurred, resulting in leakage of cellular content. Hence, high concentrations of heavy metal pollutants in mangrove habitats will result in growth retardation of thraustochytrids and, eventually, cell death.
©2010 by Walter de Gruyter Berlin New York
Articles in the same Issue
- Guest editorial
- 11th International Marine and Freshwater Mycology Symposium, Taichung, Taiwan R.O.C., November 2009
- Review
- A review on deep-sea fungi: occurrence, diversity and adaptations
- Research articles
- Sedecimiella taiwanensis gen. et sp. nov., a marine mangrove fungus in the Hypocreales (Hypocreomycetidae, Ascomycota)
- Dibenzofurans from the marine sponge-derived ascomycete Super1F1-09
- Antimicrobial activities of marine fungi from Malaysia
- Diversity and abundance of lignicolous marine fungi from the east and west coasts of Peninsular Malaysia and Sabah (Borneo Island)
- Fungal colonization and breakdown of sedge (Cyperus malaccensis Lam.) in an Indian mangrove
- Occurrence and distribution of fungi in a mangrove forest on Siargao Island, Philippines
- Biodiversity of marine fungi in Malaysian mangroves
- Endophytic fungi from mangrove plant species of Thailand: their antimicrobial and anticancer potentials
- Fungal communities in bunker C oil-impacted sites off southern Guimaras, Philippines: a post-spill assessment of Solar 1 oil spill
- Potential use of marine arenicolous ascomycetes as bioindicators of ecosystem disturbance on sandy Cancun beaches: Corollospora maritima as a candidate species
- Effects of Cu(II) and Zn(II) on growth and cell morphology of thraustochytrids isolated from fallen mangrove leaves in Taiwan
- Marine-derived fungi from Kappaphycus alvarezii and K. striatum as potential causative agents of ice-ice disease in farmed seaweeds
- Short communication
- Fungal diversity in bottom sediments of the Kara Sea
- Reviewer acknowledgement Bot. Mar. volume 53 (2010)
Articles in the same Issue
- Guest editorial
- 11th International Marine and Freshwater Mycology Symposium, Taichung, Taiwan R.O.C., November 2009
- Review
- A review on deep-sea fungi: occurrence, diversity and adaptations
- Research articles
- Sedecimiella taiwanensis gen. et sp. nov., a marine mangrove fungus in the Hypocreales (Hypocreomycetidae, Ascomycota)
- Dibenzofurans from the marine sponge-derived ascomycete Super1F1-09
- Antimicrobial activities of marine fungi from Malaysia
- Diversity and abundance of lignicolous marine fungi from the east and west coasts of Peninsular Malaysia and Sabah (Borneo Island)
- Fungal colonization and breakdown of sedge (Cyperus malaccensis Lam.) in an Indian mangrove
- Occurrence and distribution of fungi in a mangrove forest on Siargao Island, Philippines
- Biodiversity of marine fungi in Malaysian mangroves
- Endophytic fungi from mangrove plant species of Thailand: their antimicrobial and anticancer potentials
- Fungal communities in bunker C oil-impacted sites off southern Guimaras, Philippines: a post-spill assessment of Solar 1 oil spill
- Potential use of marine arenicolous ascomycetes as bioindicators of ecosystem disturbance on sandy Cancun beaches: Corollospora maritima as a candidate species
- Effects of Cu(II) and Zn(II) on growth and cell morphology of thraustochytrids isolated from fallen mangrove leaves in Taiwan
- Marine-derived fungi from Kappaphycus alvarezii and K. striatum as potential causative agents of ice-ice disease in farmed seaweeds
- Short communication
- Fungal diversity in bottom sediments of the Kara Sea
- Reviewer acknowledgement Bot. Mar. volume 53 (2010)
