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Thawabteh AM, Naseef HA, Karaman D, Bufo SA, Scrano L, Karaman R. Understanding the Risks of Diffusion of Cyanobacteria Toxins in Rivers, Lakes, and Potable Water. Toxins (Basel) 2023; 15:582. [PMID: 37756009 PMCID: PMC10535532 DOI: 10.3390/toxins15090582] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/10/2023] [Accepted: 09/18/2023] [Indexed: 09/28/2023] Open
Abstract
Blue-green algae, or cyanobacteria, may be prevalent in our rivers and tap water. These minuscule bacteria can grow swiftly and form blooms in warm, nutrient-rich water. Toxins produced by cyanobacteria can pollute rivers and streams and harm the liver and nervous system in humans. This review highlights the properties of 25 toxin types produced by 12 different cyanobacteria genera. The review also covered strategies for reducing and controlling cyanobacteria issues. These include using physical or chemical treatments, cutting back on fertilizer input, algal lawn scrubbers, and antagonistic microorganisms for biocontrol. Micro-, nano- and ultrafiltration techniques could be used for the removal of internal and extracellular cyanotoxins, in addition to powdered or granular activated carbon, ozonation, sedimentation, ultraviolet radiation, potassium permanganate, free chlorine, and pre-treatment oxidation techniques. The efficiency of treatment techniques for removing intracellular and extracellular cyanotoxins is also demonstrated. These approaches aim to lessen the risks of cyanobacterial blooms and associated toxins. Effective management of cyanobacteria in water systems depends on early detection and quick action. Cyanobacteria cells and their toxins can be detected using microscopy, molecular methods, chromatography, and spectroscopy. Understanding the causes of blooms and the many ways for their detection and elimination will help the management of this crucial environmental issue.
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Affiliation(s)
- Amin Mahmood Thawabteh
- Faculty of Pharmacy, Nursing and Health Professions, Birzeit University, Ramallah 00972, Palestine
- General Safety Section, General Services Department, Birzeit University, Bir Zeit 71939, Palestine
| | - Hani A Naseef
- Faculty of Pharmacy, Nursing and Health Professions, Birzeit University, Ramallah 00972, Palestine
| | - Donia Karaman
- Faculty of Pharmacy, Al-Quds University, Jerusalem 20002, Palestine
| | - Sabino A Bufo
- Department of Sciences, University of Basilicata, Via dell'Ateneo Lucano 10, 85100 Potenza, Italy
- Department of Geography, Environmental Management and Energy Studies, University of Johannesburg, Auckland Park Kingsway Campus, Johannesburg 2092, South Africa
| | - Laura Scrano
- Department of European and Mediterranean Cultures, University of Basilicata, Via Lanera 20, 75100 Matera, Italy
| | - Rafik Karaman
- Faculty of Pharmacy, Al-Quds University, Jerusalem 20002, Palestine
- Department of Sciences, University of Basilicata, Via dell'Ateneo Lucano 10, 85100 Potenza, Italy
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2
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Almeida AVM, Vaz MGMV, Castro NVD, Genuário DB, Oder JC, Souza PAMD, Martins SB, Machado M, Nunes-Nesi A, Araújo WL. How diverse a genus can be: An integrated multi-layered analysis into Desmonostoc (Nostocaceae, Cyanobacteriota). Syst Appl Microbiol 2023; 46:126422. [PMID: 37119668 DOI: 10.1016/j.syapm.2023.126422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 03/29/2023] [Accepted: 04/18/2023] [Indexed: 05/01/2023]
Abstract
Cyanobacteria (Phylum Cyanobacteriota) are Gram-negative bacteria capable of performing oxygenic photosynthesis. Although the taxonomic classification of cyanobacteria was for a long time based primarily on morphological characters, the application of other techniques (e.g. molecular phylogeny), especially in recent decades, has contributed to a better resolution of cyanobacteria systematics, leading to a revision of the phylum. Although Desmonostoc occurs as a new genus/cluster and some species have been described recently, relatively few studies have been carried out to elucidate its diversity, which encompasses strains from different ecological origins, or examine the application of new characterization tools. In this context, the present study investigated the diversity within Desmonostoc, based on morphological, molecular, metabolic, and physiological characteristics. Although the usage of physiological parameters is unusual for a polyphasic approach, they were efficient in the characterization performed here. The phylogenetic analysis based on 16S rRNA gene sequences put all studied strains (25) into the D1 cluster and indicated the emergence of novel sub-clusters. It was also possible to observe that nifD and nifH exhibited different evolutionary histories within the Desmonostoc strains. Collectively, metabolic and physiological data, coupled with the morphometric data, were in general, in good agreement with the separation based on the phylogeny of the 16S rRNA gene. Furthermore, the study provided important information on the diversity of Desmonostoc strains collected from different Brazilian biomes by revealing that they were cosmopolitan strains, acclimatized to low luminous intensities, with a large metabolic diversity and great biotechnological potential.
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Affiliation(s)
- Allan Victor M Almeida
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900 Viçosa, Minas Gerais, Brazil
| | | | - Naira Valle de Castro
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900 Viçosa, Minas Gerais, Brazil
| | - Diego Bonaldo Genuário
- Biodiversita Tecnologia Microbiana, 13148-153 Paulínia, São Paulo, Brazil; Laboratório de Microbiologia Ambiental, EMBRAPA Meio Ambiente, 13820-000 Jaguariúna, São Paulo, Brazil
| | - Jean Coutinho Oder
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900 Viçosa, Minas Gerais, Brazil
| | | | - Sandy Bastos Martins
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900 Viçosa, Minas Gerais, Brazil
| | - Mariana Machado
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900 Viçosa, Minas Gerais, Brazil
| | - Adriano Nunes-Nesi
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900 Viçosa, Minas Gerais, Brazil
| | - Wagner L Araújo
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900 Viçosa, Minas Gerais, Brazil.
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3
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Pellegrinetti TA, Cotta SR, Sarmento H, Costa JS, Delbaje E, Montes CR, Camargo PB, Barbiero L, Rezende-Filho AT, Fiore MF. Bacterial Communities Along Environmental Gradients in Tropical Soda Lakes. MICROBIAL ECOLOGY 2023; 85:892-903. [PMID: 35916937 DOI: 10.1007/s00248-022-02086-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 07/25/2022] [Indexed: 05/04/2023]
Abstract
Soda lake environments are known to be variable and can have distinct differences according to geographical location. In this study, we investigated the effects of different environmental conditions of six adjacent soda lakes in the Pantanal biome (Mato Grosso do Sul state, Brazil) on bacterial communities and their functioning using a metagenomic approach combined with flow cytometry and chemical analyses. Ordination analysis using flow cytometry and water chemistry data from two sampling periods (wet and dry) clustered soda lakes into three different profiles: eutrophic turbid (ET), oligotrophic turbid (OT), and clear vegetated oligotrophic (CVO). Analysis of bacterial community composition and functioning corroborated this ordination; the exception was one ET lake, which was similar to one OT lake during the wet season, indicating drastic shifts between seasons. Microbial abundance and diversity increased during the dry period, along with a considerable number of limnological variables, all indicative of a strong effect of the precipitation-evaporation balance in these systems. Cyanobacteria were associated with high electric conductivity, pH, and nutrient availability, whereas Actinobacteria, Alphaproteobacteria, and Betaproteobacteria were correlated with landscape morphology variability (surface water, surface perimeter, and lake volume) and with lower salinity and pH levels. Stress response metabolism was enhanced in OT and ET lakes and underrepresented in CVO lakes. The microbiome dataset of this study can serve as a baseline for restoring impacted soda lakes. Altogether, the results of this study demonstrate the sensitivity of tropical soda lakes to climate change, as slight changes in hydrological regimes might produce drastic shifts in community diversity.
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Affiliation(s)
- Thierry A Pellegrinetti
- Center for Nuclear Energy in Agriculture, University of São Paulo, Avenida Centenário 303, Piracicaba, São Paulo, 13416-000, Brazil
| | - Simone R Cotta
- Center for Nuclear Energy in Agriculture, University of São Paulo, Avenida Centenário 303, Piracicaba, São Paulo, 13416-000, Brazil
| | - Hugo Sarmento
- Department of Hydrobiology, Federal University of São Carlos (UFSCar), São Carlos, São Paulo, 13565-905, Brazil
| | - Juliana S Costa
- Center for Nuclear Energy in Agriculture, University of São Paulo, Avenida Centenário 303, Piracicaba, São Paulo, 13416-000, Brazil
| | - Endrews Delbaje
- Center for Nuclear Energy in Agriculture, University of São Paulo, Avenida Centenário 303, Piracicaba, São Paulo, 13416-000, Brazil
| | - Celia R Montes
- Center for Nuclear Energy in Agriculture, University of São Paulo, Avenida Centenário 303, Piracicaba, São Paulo, 13416-000, Brazil
| | - Plinio B Camargo
- Center for Nuclear Energy in Agriculture, University of São Paulo, Avenida Centenário 303, Piracicaba, São Paulo, 13416-000, Brazil
| | - Laurent Barbiero
- The Observatory Midi-Pyrénées, Geoscience Environment Toulouse, Research Institute for Development, The National Center for Research Scientific, Paul Sabatier University, 31400, Toulouse, France
| | - Ary T Rezende-Filho
- Faculty of Engineering, Architecture and Urbanism and Geography, Federal University of Mato Grosso do Sul, Mato Grosso do Sul, Campo Grande, 79070-900, Brazil
| | - Marli F Fiore
- Center for Nuclear Energy in Agriculture, University of São Paulo, Avenida Centenário 303, Piracicaba, São Paulo, 13416-000, Brazil.
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4
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A Novel Microcystin-Producing Cyanobacterial Species from the Genus Desmonostoc, Desmonostoc alborizicum sp. nov., Isolated from a Water Supply System of Iran. Curr Microbiol 2022; 80:49. [PMID: 36542171 DOI: 10.1007/s00284-022-03144-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 12/06/2022] [Indexed: 12/24/2022]
Abstract
A qanat or kariz is a slightly sloping underground aqueduct used to transport water from wells or aquifers to the surface for irrigation and drinking supply. A cyanobacterial strain was isolated from a cyanobacterial mat colonizing the wall of a qanat in Golestan province, Gorgan City, Iran. Fragments of 16S rRNA, mcyG, and mcyD genes were amplified and sequenced, as well as the 16S-23S internal transcribed spacer (ITS). After microscopic examination, the isolate was related to a morphotype of Nostoc sensu lato group, with similar characteristics to Desmonostoc. The 16S rRNA phylogenetic analysis placed the isolate into the typical cluster of the recently proposed genus Desmonostoc. Morphological analysis revealed distinctive characteristic and secondary 16S-23S rRNA structures derived from comparative analysis, which did not match known species of Desmonostoc. These results lead us to propose a novel Desmonostoc species, Desmonostoc alborizicum, which was described and compared with similar taxa. Furthermore, for the first time a potentially toxic species of Desmonostoc was isolated from a water supply, since the mcyD and mcyG genes of the microcystin synthetase (mcy) cluster were successfully sequenced. Using mass spectrometry, detectable amounts of the hepatotoxin microcystin-LR and -RR, along with demethylated variants, were present in cell extracts of the Desmonostoc strain. Our findings contribute to a deeper understanding of the diversity, systematics, and occurrence of the genus Desmonostoc.
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5
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Elias LP, Menegário AA, Hernández AH, Eismann CE, Martins Viana JL, Pedrobom JH, Geraldo de Oliveira Junior E, Barbiero L, Fostier AH. In situ fractionation and redox speciation of arsenic in soda lakes of Nhecolândia (Pantanal, Brazil) using the diffusive gradients in thin films (DGT) technique. CHEMOSPHERE 2022; 288:132592. [PMID: 34662636 DOI: 10.1016/j.chemosphere.2021.132592] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 10/12/2021] [Accepted: 10/14/2021] [Indexed: 06/13/2023]
Abstract
In situ fractionation and redox speciation of As in three different saline-alkaline lakes (green, black and crystalline lakes) in the Pantanal of Nhecolândia (Brazil) were performed by using Diffusive Gradients in Thin films (DGT). The results indicated that As is present mainly in dissolved form. Total As concentration was similar when using different filter membranes, demonstrating that the species adsorbed by DGT devices were <10 kDa. Higher concentrations of labile total As were observed in the center of the lakes, indicating that the nature of the organic matter influences the formation of As complexes. Total As concentrations determined by using ZrO2 DGT were consistent with As concentration in ultrafiltered water samples collected in the black lake. However, part of the data about As(III) obtained in grab samples contrasted with DGT results. The differences observed may indicate that alterations in the species occur during the storage period before analysis by ultrafiltration. As(III) concentrations measured by DGT in the black and crystalline lakes were 1-3 μg L-1 and 4-7 μg L-1, respectively, accounting for only 4%-8% of the total DGT inorganic As. In the green lake, As(III) concentrations were significantly higher at the center (217 μg L-1). Both the phytoplankton community and the dissolved organic carbon influence the As speciation and bioavailability in the lakes of Nhecolândia. The DGT approach used in the present work was able to perform As speciation and demonstrates that in situ sampling analytical techniques are essential in understanding As speciation and its behavior in complex natural aquatic systems.
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Affiliation(s)
- Lucas Pellegrini Elias
- São Paulo State University (Unesp), Environmental Studies Center, Av. 24-A, 1515, Postal Code: 13506-900, Rio Claro, SP, Brazil
| | - Amauri Antonio Menegário
- São Paulo State University (Unesp), Environmental Studies Center, Av. 24-A, 1515, Postal Code: 13506-900, Rio Claro, SP, Brazil.
| | - Amauris Hechavarría Hernández
- University of Campinas (Unicamp), Institute of Chemistry, Cidade Universitária "Zeferino Vaz", Postal Code: 13083-970, Campinas, SP, Brazil
| | - Carlos Eduardo Eismann
- São Paulo State University (Unesp), Environmental Studies Center, Av. 24-A, 1515, Postal Code: 13506-900, Rio Claro, SP, Brazil
| | - José Lucas Martins Viana
- University of Campinas (Unicamp), Institute of Chemistry, Cidade Universitária "Zeferino Vaz", Postal Code: 13083-970, Campinas, SP, Brazil
| | - Jorge Henrique Pedrobom
- São Paulo State University (Unesp), Environmental Studies Center, Av. 24-A, 1515, Postal Code: 13506-900, Rio Claro, SP, Brazil
| | | | - Laurent Barbiero
- Université P. Sabatier, IRD, CNRS, OMP, Géoscience Environnement Toulouse (GET), 14 Avenue Edouard Belin, F31400, Toulouse, France
| | - Anne Hélène Fostier
- University of Campinas (Unicamp), Institute of Chemistry, Cidade Universitária "Zeferino Vaz", Postal Code: 13083-970, Campinas, SP, Brazil
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6
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Malone CFDS, Genuário DB, Vaz MGMV, Fiore MF, Sant'Anna CL. Monilinema gen. nov., a homocytous genus (Cyanobacteria, Leptolyngbyaceae) from saline-alkaline lakes of Pantanal wetlands, Brazil. JOURNAL OF PHYCOLOGY 2021; 57:473-483. [PMID: 33211341 DOI: 10.1111/jpy.13106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 08/08/2020] [Accepted: 08/11/2020] [Indexed: 06/11/2023]
Abstract
Cyanobacteria morphotypes with simple morphology, mainly thin filamentous homocytous strains, comprise a taxonomically complex group and represent a challenge in systematic studies. However, the polyphasic approach applied nowadays to investigate the cyanobacterial diversity has emerged as a powerful tool to undercover cryptic taxa and to set up a more natural classification system. Yet, studies exploring the cultured diversity of cyanobacteria from extreme tropical environments have paved the way to the discovery of new cyanobacteria taxa, enabling the description of Pantanalinema, Alkalinema, and Cephalothrix as novel genera from saline-alkaline lakes in Pantanal wetlands (Brazil). The present study investigated a set of cyanobacterial strains resembling Leptolyngbya morphotypes by means of its morphology, 16S ribosomal RNA (16S rRNA) phylogeny, and ITS secondary structures. Based on the shape and structure of their trichomes, the low levels of 16S rRNA identity coupled with the distinct phylogenetic position with regard to well establish genera, and their divergent ecological feature, these strains must be accommodated into a novel genus, named as Monilinema gen. nov., described under the provisions of the International Code of Nomenclature for algae, fungi, and plants. Accordingly, based on the singularity of the D1-D1' and V3 helixes, these strains should be considered as a single species, Monilinema alkalinum.
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Affiliation(s)
| | - Diego Bonaldo Genuário
- Laboratory of Environmental Microbiology, EMBRAPA Environment, 13820-000, Jaguariúna, São Paulo, Brazil
- Biodiversita Microbial Technology, 13087-010, Campinas, SP, Brazil
| | - Marcelo Gomes Marçal Vieira Vaz
- Laboratory of Phycology and Molecular Biology, Department of Plant Biology, University of Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
| | - Marli Fátima Fiore
- Center for Nuclear Energy in Agriculture, University of São Paulo, Avenida Centenário 303, 13400-970, Piracicaba, SP, Brazil
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7
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Delbaje E, Andreote APD, Pellegrinetti TA, Cruz RB, Branco LHZ, Fiore MF. Phylogenomic analysis of Anabaenopsis elenkinii (Nostocales, Cyanobacteria). Int J Syst Evol Microbiol 2021; 71. [PMID: 33476257 DOI: 10.1099/ijsem.0.004648] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The saline-alkaline lakes (soda lakes) are the habitat of the haloalkaliphilic cyanobacterium Anabaenopsis elenkinii, the type species of this genus. To obtain robust phylogeny of this type species, we have generated whole-genome sequencing of the bloom-forming Anabaenopsis elenkinii strain CCIBt3563 isolated from a Brazilian soda lake. This strain presents the typical morphology of A. elenkinii with short and curved trichomes with apical heterocytes established after separation of paired intercalary heterocytes and also regarding to cell dimensions. Its genome size is 4 495 068 bp, with a G+C content of 41.98 %, a total of 3932 potential protein coding genes and four 16S rRNA genes. Phylogenomic tree inferred by RAxML based on the alignment of 120 conserved proteins using GTDB-Tk grouped A. elenkinii CCIBt3563 together with other genera of the family Aphanizomenonaceae. However, the only previous available genome of Anabaenopsis circularis NIES-21 was distantly positioned within a clade of Desikacharya strains, a genus from the family Nostocaceae. Furthermore, average nucleotide identity values from 86-98 % were obtained among NIES-21 and Desikacharya genomes, while this value was 76.04 % between NIES-21 and the CCIBt3563 genome. These findings were also corroborated by the phylogenetic tree of 16S rRNA gene sequences, which also showed a strongly supported subcluster of A. elenkinii strains from Brazilian, Mexican and Kenyan soda lakes. This study presents the phylogenomics and genome-scale analyses of an Anabaenopsis elenkinii strain, improving molecular basis for demarcation of this species and framework for the classification of cyanobacteria based on the polyphasic approach.
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Affiliation(s)
- Endrews Delbaje
- University of São Paulo, Center for Nuclear Energy in Agriculture, Avenida Centenário 303, 13400-970 Piracicaba, SP, Brazil
| | - Ana Paula D Andreote
- University of São Paulo, Center for Nuclear Energy in Agriculture, Avenida Centenário 303, 13400-970 Piracicaba, SP, Brazil
| | - Thierry A Pellegrinetti
- University of São Paulo, Center for Nuclear Energy in Agriculture, Avenida Centenário 303, 13400-970 Piracicaba, SP, Brazil
| | - Renata B Cruz
- University of São Paulo, Center for Nuclear Energy in Agriculture, Avenida Centenário 303, 13400-970 Piracicaba, SP, Brazil
| | - Luis H Z Branco
- São Paulo State University, Institute of Bioscience, Languages and Exact Sciences, 15054-000 São José do Rio Preto, SP, Brazil
| | - Marli F Fiore
- University of São Paulo, Center for Nuclear Energy in Agriculture, Avenida Centenário 303, 13400-970 Piracicaba, SP, Brazil
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8
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Cyanobacteria Phylogenetic Studies Reveal Evidence for Polyphyletic Genera from Thermal and Freshwater Habitats. DIVERSITY-BASEL 2020. [DOI: 10.3390/d12080298] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Cyanobacteria are among the most diverse morphological microorganisms that inhabit a great variety of habitats. Their presence in the Azores, a volcanic archipelago of nine islands in the middle of the North Atlantic Ocean, has already been reported. However, due to the high diversity of cyanobacteria habitats, their biodiversity is still understudied, mainly in extreme environments. To address this, a total of 156 cyanobacteria strains from Azores lakes, streams, thermal and terrestrial habitats were isolated. Identification was made based on a polyphasic approach using classical taxonomy (morphological characteristics and environmental data) and phylogeny among 81 strains assessed by maximum likelihood and Bayesian analysis of 16S rDNA partial sequences. The 156 isolates showed a high genera diversity (38) belonging to the orders Chroococcales, Nostocales, Oscillatoriales, and Synechococcales. Eleven new genera for the Azores habitats are here reported, reinforcing that cyanobacteria biodiversity in these islands is still much understudied. Phylogenetic analysis showed 14 clusters associated with these cyanobacteria orders, with evidence for six new genera and valuable information towards Microchaete/Coleospermum taxonomic revision that better reflects species environmental distribution. These results emphasize the need for cyanobacteria taxonomy revisions, through polyphasic studies, mainly in Synechococcales order and in the Microchaete/Coleospermum, Nostoc, and Anabaena genera.
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9
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Kabirnataj S, Nematzadeh GA, Talebi AF, Saraf A, Suradkar A, Tabatabaei M, Singh P. Description of novel species of Aliinostoc, Desikacharya and Desmonostoc using a polyphasic approach. Int J Syst Evol Microbiol 2020; 70:3413-3426. [DOI: 10.1099/ijsem.0.004188] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Abstract
Five cyanobacterial strains with
Nostoc
-like morphology from different localities of the Mazandaran province of Iran were characterized using a polyphasic approach. Three strains clustered within the
Aliinostoc
clade whereas one each of the remaining two strains clustered within the genera
Desmonostoc
and
Desikacharya
. The phylogenetic positioning of all the strains by the bayesian inference, neighbour joining and maximum parsimony methods inferred using 16S rRNA gene indicated them to represent novel species of the genera
Aliinostoc
,
Desmonostoc
and
Desikacharya
. The 16S–23S ITS secondary structure analysis revealed that all five strains under study represented novel species unknown to science. In accordance with the International Code of Nomenclature for algae, fungi and plants we describe three novel species of the genus
Aliinostoc
and one species each of the genera
Desmonostoc
and
Desikacharya
.
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Affiliation(s)
- Sara Kabirnataj
- Genetic and Agricultural Biotechnology Institute of Tabarestan (GABIT), Sari Agricultural Sciences and Natural Resources University, Sari, Iran
| | - Ghorban A. Nematzadeh
- Genetic and Agricultural Biotechnology Institute of Tabarestan (GABIT), Sari Agricultural Sciences and Natural Resources University, Sari, Iran
| | - Ahmad F. Talebi
- Department of Genetics, Faculty of Microbial Biotechnology, Semnan University, Semnan, Iran
| | - Aniket Saraf
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pune, India
- Ramniranjan Jhunjhunwala College, Mumbai, India
| | - Archana Suradkar
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pune, India
| | - Meisam Tabatabaei
- Microbial Biotechnology Department, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research, Education, and Extension Organization (AREEO), Karaj, Iran
- Biofuel Research Team (BRTeam), Karaj, Iran
- Faculty of Mechanical Engineering, Ho Chi Minh City University of Transport, Ho Chi Minh City, Vietnam
- Faculty of Plantation and Agrotechnology, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia
| | - Prashant Singh
- Laboratory of Cyanobacterial Systematics and Stress Biology, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, India
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pune, India
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10
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Singh P, Šnokhousová J, Saraf A, Suradkar A, Elster J. Phylogenetic evaluation of the genus Nostoc and description of Nostoc neudorfense sp. nov., from the Czech Republic. Int J Syst Evol Microbiol 2020; 70:2740-2749. [DOI: 10.1099/ijsem.0.004102] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Cyanobacterial strain ARC8 was isolated from seepage coming into the river Dračice, Františkov, Czech Republic, and was characterized using a polyphasic approach. Strain ARC8 showed a typical
Nostoc
-like morphology and in-depth morphological characterization indicated that it is a member of the genus
Nostoc
. Furthermore, in the 16S rRNA gene phylogeny inferred using Bayesian inference, maximum likelihood and neighbour joining methods, strain ARC8 clustered within the Nostoc sensu stricto clade. The phylogenetic distance and the positioning of strain ARC8 also indicated that it is a member of the genus
Nostoc
. Furthermore, the rbcL gene phylogeny along with the 16S–23S ITS secondary structure analysis also supported the findings from the 16S rRNA gene tree. In accordance with the International Code of Nomenclature for Algae, Fungi and Plants we describe a novel species of
Nostoc
with the name Nostoc neudorfense sp. nov.
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Affiliation(s)
- Prashant Singh
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pune, India
- Laboratory of Cyanobacterial Systematics and Stress Biology, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Jana Šnokhousová
- Phycology Centre, Institute of Botany, Academy of Science CR, Třeboň, Czechia
| | - Aniket Saraf
- Ramniranjan Jhunjhunwala College, Ghatkopar, Mumbai, India
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pune, India
| | - Archana Suradkar
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pune, India
| | - Josef Elster
- Phycology Centre, Institute of Botany, Academy of Science CR, Třeboň, Czechia
- Centre for Polar Ecology, Faculty of Science, University of South Bohemia, České Budějovice, Czechia
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11
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de Alvarenga LV, Lucius S, Vaz MGMV, Araújo WL, Hagemann M. The novel strain Desmonostoc salinum CCM-UFV059 shows higher salt and desiccation resistance compared to the model strain Nostoc sp. PCC7120. JOURNAL OF PHYCOLOGY 2020; 56:496-506. [PMID: 31925964 DOI: 10.1111/jpy.12968] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 12/04/2019] [Indexed: 06/10/2023]
Abstract
Desmonostoc salinum CCM-UFV059 (Desmonostoc) is a novel cyanobacterial strain of the order Nostocales isolated from a saline-alkaline lake. The acclimation towards salt and desiccation stress of Desmonostoc was compared to the related and well-characterized model strain Nostoc sp. PCC7120 (Nostoc). Salt-stressed cells of Desmonostoc maintained low cellular Na+ concentrations and accumulated high amounts of compatible solutes, mainly sucrose and to a lower extent trehalose. These features permitted Desmonostoc to grow and maintain photosynthesis at 2-fold higher salinities than Nostoc. Moreover, Desmonostoc also induced sucrose over-accumulation under desiccation, which allowed this strain to recover from this stress in contrast to Nostoc. Additional mechanisms such as the presence of highly unsaturated lipids in the membrane and an efficient ion transport system could also explain, at least partially, how Desmonostoc is able to acclimate to high salinities and to resist longer desiccation periods. Collectively, our results provide first insights into the physiological and metabolic adaptations explaining the remarkable high salt and desiccation tolerance, which qualify Desmonostoc as an attractive model for further analysis of stress acclimation among heterocystous N2 -fixing cyanobacteria.
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Affiliation(s)
- Luna Viggiano de Alvarenga
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
- Max-Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
- Institut für Biowissenschaften, Abteilung Pflanzenphysiologie, Universität Rostock, A.-Einstein-Str. 3, Rostock, D-18059, Germany
| | - Stefan Lucius
- Institut für Biowissenschaften, Abteilung Pflanzenphysiologie, Universität Rostock, A.-Einstein-Str. 3, Rostock, D-18059, Germany
| | - Marcelo Gomes Marçal Vieira Vaz
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
- Max-Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | - Wagner L Araújo
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
- Max-Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | - Martin Hagemann
- Institut für Biowissenschaften, Abteilung Pflanzenphysiologie, Universität Rostock, A.-Einstein-Str. 3, Rostock, D-18059, Germany
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12
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Arsenic-contaminated sediment from mining areas as source of morphological and phylogenetic distinct cyanobacterial lineages. ALGAL RES 2019. [DOI: 10.1016/j.algal.2019.101589] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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13
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Patel HM, Rastogi RP, Trivedi U, Madamwar D. Cyanobacterial diversity in mat sample obtained from hypersaline desert, Rann of Kachchh. 3 Biotech 2019; 9:304. [PMID: 31355113 DOI: 10.1007/s13205-019-1837-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 07/15/2019] [Indexed: 01/18/2023] Open
Abstract
Rann of Kachchh (RoK) is a unique geoformation, which is exposed to dynamic environmental changes such as salinity, temperature, and nutrients throughout the year. In this study, the pooled mat sample was examined for the cyanobacterial community structure using culture-dependent and culture-independent approaches. Taxonomic profiling was studied using amplicon sequencing that revealed the enrichment of Pseudanabaenales and Oscillatoriales by QIIME and MG-RAST, respectively. Other abundant orders were represented by Chroococcales, Nostocales, and unclassified cyanobacteria by both approaches. Nine cyanobacterial cultures were isolated from mat samples showing 90-98% similarities with available sequences in GenBank. The culture-dependent study suggested that mat was dominated by cyanobacterial orders such as Oscillatoriales-filamentous and Chroococcales-unicellular. Our results from the culture-dependent approach also indicated that despite high similarities in gene sequences, six cyanobacteria fall into the separate clade in the phylogenetic analysis that could be signs of evolution due to an extreme environment. Cultured isolates are correlated well with abundant taxa from amplicon sequencing. Further, protein profiling was done specifically for phycobiliproteins which will be helpful to elucidate their roles in light harvesting and energy transfer mechanism in the unique environment of RoK.
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14
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Guerreiro RL, Bergier I, McGlue MM, Warren LV, Abreu UGPD, Abrahão J, Assine ML. The soda lakes of Nhecolândia: A conservation opportunity for the Pantanal wetlands. Perspect Ecol Conserv 2019. [DOI: 10.1016/j.pecon.2018.11.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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15
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Saraf A, Dawda HG, Suradkar A, Behere I, Kotulkar M, Shaikh ZM, Kumat A, Batule P, Mishra D, Singh P. Description of two new species ofAliinostocand one new species ofDesmonostocfrom India based on the Polyphasic Approach and reclassification ofNostoc punensistoDesmonostoc punensecomb. nov. FEMS Microbiol Lett 2018; 365:5184455. [DOI: 10.1093/femsle/fny272] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Accepted: 11/12/2018] [Indexed: 11/14/2022] Open
Affiliation(s)
- Aniket Saraf
- Ramniranjan Jhunjhunwala College, Ghatkopar, Mumbai-400086, Maharashtra, India
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pune-411021, Maharashtra, India
| | - Himanshu G Dawda
- Ramniranjan Jhunjhunwala College, Ghatkopar, Mumbai-400086, Maharashtra, India
| | - Archana Suradkar
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pune-411021, Maharashtra, India
| | - Isha Behere
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pune-411021, Maharashtra, India
| | - Manasi Kotulkar
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pune-411021, Maharashtra, India
| | - Zaid Muneef Shaikh
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pune-411021, Maharashtra, India
| | - Ankita Kumat
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pune-411021, Maharashtra, India
| | - Priyanka Batule
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pune-411021, Maharashtra, India
| | - Deeksha Mishra
- Laboratory of Cyanobacterial Systematics, Department of Botany, Banaras Hindu University, Varanasi-221005, Uttar Pradesh, India
| | - Prashant Singh
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pune-411021, Maharashtra, India
- Laboratory of Cyanobacterial Systematics, Department of Botany, Banaras Hindu University, Varanasi-221005, Uttar Pradesh, India
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16
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de Alvarenga LV, Vaz MGMV, Genuário DB, Esteves-Ferreira AA, Almeida AVM, de Castro NV, Lizieri C, Souza JJLL, Schaefer CEGR, Nunes-Nesi A, Araújo WL. Extending the ecological distribution of Desmonostoc genus: proposal of Desmonostoc salinum sp. nov., a novel Cyanobacteria from a saline-alkaline lake. Int J Syst Evol Microbiol 2018; 68:2770-2782. [PMID: 29985124 DOI: 10.1099/ijsem.0.002878] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Cyanobacteria is an ancient phylum of oxygenic photosynthetic microorganisms found in almost all environments of Earth. In recent years, the taxonomic placement of some cyanobacterial strains, including those belonging to the genus Nostocsensu lato, have been reevaluated by means of a polyphasic approach. Thus, 16S rRNA gene phylogeny and 16S-23S internal transcribed spacer (ITS) secondary structures coupled with morphological, ecological and physiological data are considered powerful tools for a better taxonomic and systematics resolution, leading to the description of novel genera and species. Additionally, underexplored and harsh environments, such as saline-alkaline lakes, have received special attention given they can be a source of novel cyanobacterial taxa. Here, a filamentous heterocytous strain, Nostocaceae CCM-UFV059, isolated from Laguna Amarga, Chile, was characterized applying the polyphasic approach; its fatty acid profile and physiological responses to salt (NaCl) were also determined. Morphologically, this strain was related to morphotypes of the Nostocsensu lato group, being phylogenetically placed into the typical cluster of the genus Desmonostoc. CCM-UFV059 showed identity of the 16S rRNA gene as well as 16S-23S secondary structures that did not match those from known described species of the genus Desmonostoc, as well as distinct ecological and physiological traits. Taken together, these data allowed the description of the first strain of a member of the genus Desmonostoc from a saline-alkaline lake, named Desmonostoc salinum sp. nov., under the provisions of the International Code of Nomenclature for algae, fungi and plants. This finding extends the ecological coverage of the genus Desmonostoc, contributing to a better understanding of cyanobacterial diversity and systematics.
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Affiliation(s)
- Luna Viggiano de Alvarenga
- 1Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.,2Max Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
| | - Marcelo Gomes Marçal Vieira Vaz
- 1Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.,2Max Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
| | - Diego Bonaldo Genuário
- 3Laboratório de Microbiologia Ambiental, EMBRAPA Meio Ambiente, 13820-000, Jaguariúna, São Paulo, Brazil
| | - Alberto A Esteves-Ferreira
- 1Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.,2Max Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
| | - Allan V Martins Almeida
- 1Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.,2Max Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
| | - Naira Valle de Castro
- 1Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.,2Max Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
| | - Claudineia Lizieri
- 1Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.,‡Present address: Instituto de Engenharia e Tecnologia, Centro Universitário de Belo Horizonte, UniBH, 30455-610, Belo Horizonte, Minas Gerais, Brazil
| | - José João L L Souza
- 4Departamento de Solos, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.,5Departamento de Geografia, Universidade Federal do Rio Grande do Norte, 59300-000, Caicó, Rio Grande do Norte, Brazil
| | | | - Adriano Nunes-Nesi
- 1Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.,2Max Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
| | - Wagner L Araújo
- 2Max Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.,1Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
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17
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Barbiero L, Siqueira Neto M, Braz RR, Carmo JBD, Rezende Filho AT, Mazzi E, Fernandes FA, Damatto SR, Camargo PBD. Biogeochemical diversity, O 2-supersaturation and hot moments of GHG emissions from shallow alkaline lakes in the Pantanal of Nhecolândia, Brazil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 619-620:1420-1430. [PMID: 29734618 DOI: 10.1016/j.scitotenv.2017.11.197] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 11/10/2017] [Accepted: 11/17/2017] [Indexed: 05/20/2023]
Abstract
Nhecolândia is a vast sub-region of the Pantanal wetland in Brazil with great diversity in surface water chemistry evolving in a sodic alkaline pathway under the influence of evaporation. In this region, >15,000 shallow lakes are likely to contribute an enormous quantity of greenhouse gas to the atmosphere, but the diversity of the biogeochemical scenarios and their variability in time and space is a major challenge to estimate the regional contribution. From 4 selected alkaline lakes, we compiled measurements of the physico-chemical characteristics of water and sediments, gas fluxes in floating chambers, and sedimentation rates to illustrate this diversity. Although these lakes have a similar chemical composition, the results confirm a difference between the black-water and green-water alkaline lakes, corresponding to distinct biogeochemical functioning. This difference does not appear to affect lake sedimentation rates, but is reflected in gas emissions. Black-water lakes are CO2 and CH4 sources, with fairly constant emissions throughout the seasons. Annual carbon dioxide and methane emissions approach 0.86molm-2y-1 and 0.07molm-2y-1, respectively, and no clear trend towards N2O capture or emission was observed. By contrast, green-water lakes are CO2 and N2O sinks but important CH4 sources with fluxes varying significantly throughout the seasons, depending on the magnitude of the phytoplankton bloom. The results highlight important daily and seasonal variations in gas fluxes, and in particular a hot moments for methane emissions, when the O2-supersaturation is reached during the afternoon under extreme bloom and sunny weather conditions, provoking an abrupt O2 purging of the lakes. Taking into account the seasonal variability, annual methane emissions are around 10.2molm-2y-1, i.e., much higher than reported in previous studies for alkaline lakes in Nhecolândia. Carbon dioxide and nitrous oxide consumption is estimated about 1.9molm-2y-1 and 0.73mmolm-2y-1, respectively. However, these balances must be better constrained with systematic and targeted measurements throughout the seasons.
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Affiliation(s)
- Laurent Barbiero
- Laboratorio de Ecologia Isotópica, Centro de Energia Nuclear na Agricultura (CENA), Universidade de São Paulo, Piracicaba, SP 13416-000, Brazil; Instituto de Química, Universidade estadual de Campinas, Campinas, SP 13083-970, Brazil; Géoscience Environnement Toulouse (GET), IRD, CNRS, Université P. Sabatier de Toulouse, F31400, France.
| | - Marcos Siqueira Neto
- Laboratorio de Biogeoquímica Ambiental, Centro de Energia Nuclear na Agricultura (CENA), Universidade de São Paulo, Piracicaba, SP 13416-000, Brazil
| | - Rosangela Rodrigues Braz
- Laboratorio de Ecologia Isotópica, Centro de Energia Nuclear na Agricultura (CENA), Universidade de São Paulo, Piracicaba, SP 13416-000, Brazil
| | - Janaina Braga do Carmo
- Centro de Ciências e Tecnologias para a Sustentabilidade, Universidade Federal de São Carlos, Sorocaba, SP 18052-780, Brazil
| | - Ary Tavares Rezende Filho
- Faculdade de Engenharias, Arquitetura e Urbanismo e Geografia (FAENG), Universidade Federal do Mato-Grosso do Sul, Campo Grande, MS 79070-900, Brazil
| | - Edmar Mazzi
- Laboratorio de Ecologia Isotópica, Centro de Energia Nuclear na Agricultura (CENA), Universidade de São Paulo, Piracicaba, SP 13416-000, Brazil
| | | | - Sandra Regina Damatto
- Departamento de Metrologia das Radiações, Instituto de Pesquisas Energéticas e Nucleares (IPEN), Universidade de São Paulo, São Paulo, SP 05508-000, Brazil
| | - Plinio Barbosa de Camargo
- Laboratorio de Ecologia Isotópica, Centro de Energia Nuclear na Agricultura (CENA), Universidade de São Paulo, Piracicaba, SP 13416-000, Brazil
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18
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Shishido TK, Jokela J, Fewer DP, Wahlsten M, Fiore MF, Sivonen K. Simultaneous Production of Anabaenopeptins and Namalides by the Cyanobacterium Nostoc sp. CENA543. ACS Chem Biol 2017; 12:2746-2755. [PMID: 28933529 DOI: 10.1021/acschembio.7b00570] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Anabaenopeptins are a diverse group of cyclic peptides, which contain an unusual ureido linkage. Namalides are shorter structural homologues of anabaenopeptins, which also contain an ureido linkage. The biosynthetic origins of namalides are unknown despite a strong resemblance to anabaenopeptins. Here, we show the cyanobacterium Nostoc sp. CENA543 strain producing new (nostamide B-E (2, 4, 5, and 6)) and known variants of anabaenopeptins (schizopeptin 791 (1) and anabaenopeptin 807 (3)). Surprisingly, Nostoc sp. CENA543 also produced namalide B (8) and the new namalides D (7), E (9), and F (10) in similar amounts to anabaenopeptins. Analysis of the complete Nostoc sp. CENA543 genome sequence indicates that both anabaenopeptins and namalides are produced by the same biosynthetic pathway through module skipping during biosynthesis. This unique process involves the skipping of two modules present in different nonribosomal peptide synthetases during the namalide biosynthesis. This skipping is an efficient mechanism since both anabaenopeptins and namalides are synthesized in similar amounts by Nostoc sp. CENA543. Consequently, gene skipping may be used to increase and possibly broaden the chemical diversity of related peptides produced by a single biosynthetic gene cluster. Genome mining demonstrated that the anabaenopeptin gene clusters are widespread in cyanobacteria and can also be found in tectomicrobia bacteria.
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Affiliation(s)
- Tânia K. Shishido
- Department
of Food and Environmental Sciences, University of Helsinki, Viikki Biocenter 1, P.O. Box 56, 00014 Helsinki, Finland
| | - Jouni Jokela
- Department
of Food and Environmental Sciences, University of Helsinki, Viikki Biocenter 1, P.O. Box 56, 00014 Helsinki, Finland
| | - David P. Fewer
- Department
of Food and Environmental Sciences, University of Helsinki, Viikki Biocenter 1, P.O. Box 56, 00014 Helsinki, Finland
| | - Matti Wahlsten
- Department
of Food and Environmental Sciences, University of Helsinki, Viikki Biocenter 1, P.O. Box 56, 00014 Helsinki, Finland
| | - Marli F. Fiore
- Center
for Nuclear Energy in Agriculture, University of São Paulo, Avenida Centenário 303, Piracicaba, 13400-970, São Paulo, Brazil
| | - Kaarina Sivonen
- Department
of Food and Environmental Sciences, University of Helsinki, Viikki Biocenter 1, P.O. Box 56, 00014 Helsinki, Finland
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19
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Jokela J, Heinilä LMP, Shishido TK, Wahlsten M, Fewer DP, Fiore MF, Wang H, Haapaniemi E, Permi P, Sivonen K. Production of High Amounts of Hepatotoxin Nodularin and New Protease Inhibitors Pseudospumigins by the Brazilian Benthic Nostoc sp. CENA543. Front Microbiol 2017; 8:1963. [PMID: 29062311 PMCID: PMC5640712 DOI: 10.3389/fmicb.2017.01963] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 09/25/2017] [Indexed: 01/26/2023] Open
Abstract
Nostoc is a cyanobacterial genus, common in soils and a prolific producer of natural products. This research project aimed to explore and characterize Brazilian cyanobacteria for new bioactive compounds. Here we report the production of hepatotoxins and new protease inhibitors from benthic Nostoc sp. CENA543 isolated from a small, shallow, saline-alkaline lake in the Nhecolândia, Pantanal wetland area in Brazil. Nostoc sp. CENA543 produces exceptionally high amounts of nodularin-R. This is the first free-living Nostoc that produces nodularin at comparable levels as the toxic, bloom-forming, Nodularia spumigena. We also characterized pseudospumigins A-F, which are a novel family of linear tetrapeptides. Pseudospumigins are structurally related to linear tetrapeptide spumigins and aeruginosins both present in N. spumigena but differ in respect to their diagnostic amino acid, which is Ile/Leu/Val in pseudospumigins, Pro/mPro in spumigins, and Choi in aeruginosins. The pseudospumigin gene cluster is more similar to the spumigin biosynthetic gene cluster than the aeruginosin gene cluster. Pseudospumigin A inhibited trypsin (IC50 4.5 μM after 1 h) in a similar manner as spumigin E from N. spumigena but was almost two orders of magnitude less potent. This study identifies another location and environment where the hepatotoxic nodularin has the potential to cause the death of eukaryotic organisms.
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Affiliation(s)
- Jouni Jokela
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Lassi M P Heinilä
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Tânia K Shishido
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Matti Wahlsten
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - David P Fewer
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Marli F Fiore
- Center for Nuclear Energy in Agriculture, University of São Paulo, Piracicaba, Brazil
| | - Hao Wang
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Esa Haapaniemi
- Department of Chemistry, University of Jyväskylä, Helsinki, Finland
| | - Perttu Permi
- Department of Chemistry, University of Jyväskylä, Helsinki, Finland.,Department of Biological and Environmental Science, Nanoscience Center, University of Jyväskylä, Helsinki, Finland
| | - Kaarina Sivonen
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland
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20
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Bagchi SN, Dubey N, Singh P. Phylogenetically distant clade of Nostoc-like taxa with the description of Aliinostoc gen. nov. and Aliinostoc morphoplasticum sp. nov. Int J Syst Evol Microbiol 2017; 67:3329-3338. [DOI: 10.1099/ijsem.0.002112] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Suvendra Nath Bagchi
- Department of Biological Science, Rani Durgavati University, Jabalpur, Madhya Pradesh 482001, India
| | - Neelam Dubey
- Department of Biological Science, Rani Durgavati University, Jabalpur, Madhya Pradesh 482001, India
| | - Prashant Singh
- National Centre for Microbial Resource (NCMR) (formerly Microbial Culture Collection, MCC), National Centre for Cell Science (NCCS), Pune, India
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21
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Genuário DB, Vaz MGMV, Melo ISD. Phylogenetic insights into the diversity of homocytous cyanobacteria from Amazonian rivers. Mol Phylogenet Evol 2017; 116:120-135. [PMID: 28830829 DOI: 10.1016/j.ympev.2017.08.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 06/05/2017] [Accepted: 08/17/2017] [Indexed: 01/23/2023]
Abstract
The Amazon Rainforest holds great tropical biodiversity, mainly because of its favourable climatic conditions. The high temperatures, luminosity and humidity coupled with the nutritional simplicity of cyanobacteria allow undiscovered diversity to flourish within this group of microorganisms. Some efforts to reveal this diversity have been attempted; however, most were focused on the microscopic observation of environmental samples without any genetic information. Very few studies focusing on morphological, ecological and molecular criteria have been conducted, and none have been devoted to homocytous cyanobacteria forms in Amazonia region. Therefore, the genetic relationships amongst strains retrieved from this ecosystem with regard to other environments from Brazil and the world have not been tested and, consequently, the Amazonian strains would naturally be assumed as novel to science. To examine these relationships, cultured homocytous cyanobacteria isolated from two Amazonian rivers (Amazonas and Solimões) were evaluated using a phylogenetic perspective, considering the 16S rRNA gene sequence. A total of eleven homocytous cyanobacterial strains were isolated. Morphologically, they were identified as Pseudanabaena, Leptolyngbya, Planktothrix and Phormidium, but genetically they were included in the typical clusters of Planktothrix, Pseudanabaena, Cephalothrix, Pantanalinema and Alkalinema. These three latter genera have been detected in other Brazilian ecosystems only (Pantanal, Atlantic Rainforest and Pampa), while those remaining have been extensively found in many parts of the world. The data provided here indicate that Amazonian rivers support a homocytous cyanobacterial diversity previously reported from other geographical and ecological environments.
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Affiliation(s)
- Diego Bonaldo Genuário
- Laboratory of Environmental Microbiology, EMBRAPA Environment, 13820-000 Jaguariúna, São Paulo, Brazil
| | - Marcelo Gomes Marçal Vieira Vaz
- Laboratório de Ficologia e Biologia Molecular, Unidade de Crescimento de Plantas, Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900 Viçosa, Minas Gerais, Brazil
| | - Itamar Soares de Melo
- Laboratory of Environmental Microbiology, EMBRAPA Environment, 13820-000 Jaguariúna, São Paulo, Brazil.
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