Diversity, Cyanotoxin Production, and Bioactivities of Cyanobacteria Isolated from Freshwaters of Greece
Cyanobacteria are a diverse group of photosynthetic Gram-negative bacteria that produce an array of secondary compounds with selective bioactivity against a broad spectrum of organisms and cell lines. In this study, 29 strains isolated from freshwaters in Greece were classified using a polyphasic ap...
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MDPI AG
2019-07-01
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Online Access: | https://www.mdpi.com/2072-6651/11/8/436 |
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doaj-0963df5fec4746609bcc5b6aadbaabb1 |
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record_format |
Article |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Spyros Gkelis Manthos Panou Despoina Konstantinou Panagiotis Apostolidis Antonia Kasampali Sofia Papadimitriou Dominiki Kati Giorgia Maria Di Lorenzo Stamatia Ioakeim Sevasti-Kiriaki Zervou Christophoros Christophoridis Theodoros M. Triantis Triantafyllos Kaloudis Anastasia Hiskia Minas Arsenakis |
spellingShingle |
Spyros Gkelis Manthos Panou Despoina Konstantinou Panagiotis Apostolidis Antonia Kasampali Sofia Papadimitriou Dominiki Kati Giorgia Maria Di Lorenzo Stamatia Ioakeim Sevasti-Kiriaki Zervou Christophoros Christophoridis Theodoros M. Triantis Triantafyllos Kaloudis Anastasia Hiskia Minas Arsenakis Diversity, Cyanotoxin Production, and Bioactivities of Cyanobacteria Isolated from Freshwaters of Greece Toxins polyphasic taxonomy antibacterial cytotoxicity microcystins <i>Jaaginema</i> <i>Synechococcus</i> |
author_facet |
Spyros Gkelis Manthos Panou Despoina Konstantinou Panagiotis Apostolidis Antonia Kasampali Sofia Papadimitriou Dominiki Kati Giorgia Maria Di Lorenzo Stamatia Ioakeim Sevasti-Kiriaki Zervou Christophoros Christophoridis Theodoros M. Triantis Triantafyllos Kaloudis Anastasia Hiskia Minas Arsenakis |
author_sort |
Spyros Gkelis |
title |
Diversity, Cyanotoxin Production, and Bioactivities of Cyanobacteria Isolated from Freshwaters of Greece |
title_short |
Diversity, Cyanotoxin Production, and Bioactivities of Cyanobacteria Isolated from Freshwaters of Greece |
title_full |
Diversity, Cyanotoxin Production, and Bioactivities of Cyanobacteria Isolated from Freshwaters of Greece |
title_fullStr |
Diversity, Cyanotoxin Production, and Bioactivities of Cyanobacteria Isolated from Freshwaters of Greece |
title_full_unstemmed |
Diversity, Cyanotoxin Production, and Bioactivities of Cyanobacteria Isolated from Freshwaters of Greece |
title_sort |
diversity, cyanotoxin production, and bioactivities of cyanobacteria isolated from freshwaters of greece |
publisher |
MDPI AG |
series |
Toxins |
issn |
2072-6651 |
publishDate |
2019-07-01 |
description |
Cyanobacteria are a diverse group of photosynthetic Gram-negative bacteria that produce an array of secondary compounds with selective bioactivity against a broad spectrum of organisms and cell lines. In this study, 29 strains isolated from freshwaters in Greece were classified using a polyphasic approach and assigned to Chroococcales, Synechococcales, and Nostocales, representing 11 genera and 17 taxa. There were good agreements between 16S ribosomal RNA (rRNA)−<i>cpcBA</i>−internal genetic spacer (IGS) characterization and morphological features, except for the <i>Jaaginema</i>−<i>Limnothrix</i> group which appears intermixed and needs further elucidation. Methanol extracts of the strains were analyzed for cyanotoxin production and tested against pathogenic bacteria species and several cancer cell lines. We report for the first time a <i>Nostoc oryzae</i> strain isolated from rice fields capable of producing microcystins (MCs) and a <i>Chlorogloeopsis fritschii</i> strain isolated from the plankton of a lake, suggesting that this species may also occur in freshwater temperate habitats. Strains with very high or identical 16S rRNA gene sequences displayed different antibacterial and cytotoxic activities. Extracts from <i>Synechococcus</i> cf. <i>nidulans</i> showed the most potent antibacterial activity against <i>Staphylococcus aureus</i>, whereas <i>Jaaginema</i> sp. strains exhibited potent cytotoxic activities against human colorectal adenocarcinoma and hepatocellular carcinoma cells. <i>Jaaginema</i> Thessaloniki Aristotle University Microalgae and Cyanobacteria (TAU-MAC) 0110 and 0210 strains caused pronounced changes in the actin network and triggered the formation of numerous lipid droplets in hepatocellular carcinoma and green monkey kidney cells, suggesting oxidative stress and/or mitochondrial damage leading to apoptosis. |
topic |
polyphasic taxonomy antibacterial cytotoxicity microcystins <i>Jaaginema</i> <i>Synechococcus</i> |
url |
https://www.mdpi.com/2072-6651/11/8/436 |
work_keys_str_mv |
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doaj-0963df5fec4746609bcc5b6aadbaabb12020-11-24T21:30:42ZengMDPI AGToxins2072-66512019-07-0111843610.3390/toxins11080436toxins11080436Diversity, Cyanotoxin Production, and Bioactivities of Cyanobacteria Isolated from Freshwaters of GreeceSpyros Gkelis0Manthos Panou1Despoina Konstantinou2Panagiotis Apostolidis3Antonia Kasampali4Sofia Papadimitriou5Dominiki Kati6Giorgia Maria Di Lorenzo7Stamatia Ioakeim8Sevasti-Kiriaki Zervou9Christophoros Christophoridis10Theodoros M. Triantis11Triantafyllos Kaloudis12Anastasia Hiskia13Minas Arsenakis14Department of Botany, School of Biology, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, GreeceDepartment of Botany, School of Biology, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, GreeceDepartment of Botany, School of Biology, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, GreeceDepartment of Botany, School of Biology, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, GreeceDepartment of Botany, School of Biology, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, GreeceDepartment of Botany, School of Biology, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, GreeceDepartment of Botany, School of Biology, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, GreeceDepartment of Botany, School of Biology, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, GreeceDepartment of Botany, School of Biology, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, GreeceLaboratory of Photo-Catalytic Processes and Environmental Chemistry, Institute of Nanoscience & Nanotechnology, National Center for Scientific Research “Demokritos”, Patriarchou Grigoriou & Neapoleos, Agia Paraskevi, 15341 Athens, GreeceLaboratory of Photo-Catalytic Processes and Environmental Chemistry, Institute of Nanoscience & Nanotechnology, National Center for Scientific Research “Demokritos”, Patriarchou Grigoriou & Neapoleos, Agia Paraskevi, 15341 Athens, GreeceLaboratory of Photo-Catalytic Processes and Environmental Chemistry, Institute of Nanoscience & Nanotechnology, National Center for Scientific Research “Demokritos”, Patriarchou Grigoriou & Neapoleos, Agia Paraskevi, 15341 Athens, GreeceLaboratory of Photo-Catalytic Processes and Environmental Chemistry, Institute of Nanoscience & Nanotechnology, National Center for Scientific Research “Demokritos”, Patriarchou Grigoriou & Neapoleos, Agia Paraskevi, 15341 Athens, GreeceLaboratory of Photo-Catalytic Processes and Environmental Chemistry, Institute of Nanoscience & Nanotechnology, National Center for Scientific Research “Demokritos”, Patriarchou Grigoriou & Neapoleos, Agia Paraskevi, 15341 Athens, GreeceDepartment of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, GreeceCyanobacteria are a diverse group of photosynthetic Gram-negative bacteria that produce an array of secondary compounds with selective bioactivity against a broad spectrum of organisms and cell lines. In this study, 29 strains isolated from freshwaters in Greece were classified using a polyphasic approach and assigned to Chroococcales, Synechococcales, and Nostocales, representing 11 genera and 17 taxa. There were good agreements between 16S ribosomal RNA (rRNA)−<i>cpcBA</i>−internal genetic spacer (IGS) characterization and morphological features, except for the <i>Jaaginema</i>−<i>Limnothrix</i> group which appears intermixed and needs further elucidation. Methanol extracts of the strains were analyzed for cyanotoxin production and tested against pathogenic bacteria species and several cancer cell lines. We report for the first time a <i>Nostoc oryzae</i> strain isolated from rice fields capable of producing microcystins (MCs) and a <i>Chlorogloeopsis fritschii</i> strain isolated from the plankton of a lake, suggesting that this species may also occur in freshwater temperate habitats. Strains with very high or identical 16S rRNA gene sequences displayed different antibacterial and cytotoxic activities. Extracts from <i>Synechococcus</i> cf. <i>nidulans</i> showed the most potent antibacterial activity against <i>Staphylococcus aureus</i>, whereas <i>Jaaginema</i> sp. strains exhibited potent cytotoxic activities against human colorectal adenocarcinoma and hepatocellular carcinoma cells. <i>Jaaginema</i> Thessaloniki Aristotle University Microalgae and Cyanobacteria (TAU-MAC) 0110 and 0210 strains caused pronounced changes in the actin network and triggered the formation of numerous lipid droplets in hepatocellular carcinoma and green monkey kidney cells, suggesting oxidative stress and/or mitochondrial damage leading to apoptosis.https://www.mdpi.com/2072-6651/11/8/436polyphasic taxonomyantibacterialcytotoxicitymicrocystins<i>Jaaginema</i><i>Synechococcus</i> |