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Pal S, Saraf A, Kumar N, Singh P. Igniting taxonomic curiosity: The amazing story of Amazonocrinis with the description of a new genus Ahomia gen. nov. and novel species of Ahomia, Amazonocrinis, and Dendronalium from the biodiversity-rich northeast region of India. JOURNAL OF PHYCOLOGY 2024; 60:387-408. [PMID: 38342971 DOI: 10.1111/jpy.13421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 12/03/2023] [Accepted: 12/05/2023] [Indexed: 02/13/2024]
Abstract
Five cyanobacterial strains exhibiting Nostoc-like morphology were sampled from the biodiversity hotspots of the northeast region of India and characterized using a polyphasic approach. Molecular and phylogenetic analysis using the 16S rRNA gene indicated that the strains belonged to the genera Amazonocrinis and Dendronalium. In the present investigation, the 16S rRNA gene phylogeny clearly demarcated two separate clades of Amazonocrinis. The strain MEG8-PS clustered along with Amazonocrinis nigriterrae CENA67, which is the type strain of the genus. The other three strains ASM11-PS, RAN-4C-PS, and NP-KLS-5A-PS clustered in a different clade that was phylogenetically distinct from the Amazonocrinis sensu stricto clade. Interestingly, while the 16S rRNA gene phylogeny exhibited two separate clusters, the 16S-23S ITS region analysis did not provide strong support for the phylogenetic observation. Subsequent analyses raised questions regarding the resolving power of the 16S-23S ITS region at the genera level and the associated complexities in cyanobacterial taxonomy. Through this study, we describe a novel genus Ahomia to accommodate the members clustering outside the Amazonocrinis sensu stricto clade. In addition, we describe five novel species, Ahomia kamrupensis, Ahomia purpurea, Ahomia soli, Amazonocrinis meghalayensis, and Dendronalium spirale, in accordance with the International Code of Nomenclature for algae, fungi, and plants (ICN). Apart from further enriching the genera Amazonocrinis and Dendronalium, the current study helps to resolve the taxonomic complexities revolving around the genus Amazonocrinis and aims to attract researchers to the continued exploration of the tropical and subtropical cyanobacteria for interesting taxa and lineages.
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Affiliation(s)
- Sagarika Pal
- Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Aniket Saraf
- Department of Biological Sciences, Ramniranjan Jhunjhunwala College, Mumbai, India
- Collection of Cyanobacteria, Institut Pasteur, Université Paris Cité, Paris, France
| | - Naresh Kumar
- Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Prashant Singh
- Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, India
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Akagha MU, Pietrasiak N, Bustos DF, Vondrášková A, Lamb SC, Johansen JR. Albertania and Egbenema gen. nov. from Nigeria and the United States, expanding biodiversity in the Oculatellaceae (cyanobacteria). JOURNAL OF PHYCOLOGY 2023; 59:1217-1236. [PMID: 37696506 DOI: 10.1111/jpy.13389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 07/31/2023] [Accepted: 08/03/2023] [Indexed: 09/13/2023]
Abstract
Knowledge of the tropical terrestrial cyanobacterial flora from the African continent is still limited. Of 31 strains isolated from soil and subaerial samples collected in Lagos State, Nigeria, three were found to be in the Oculatellaceae, including two species in a new genus. Subsequently, isolates from microbial mats in White Sands National Park in New Mexico, United States, and from a rock near the ocean in Puerto Rico, United States, were found to belong to the new genus as well. Cyanobacterial isolates were characterized microscopically, sequenced for the 16S rRNA gene and associated ITS region, and phylogenetically analyzed. Egbenema gen. nov., with three new species, as well as two new species of Albertania were differentiated from all other Oculatellaceae. Both genera belong to a supported clade within the Oculatellaceae that includes Trichotorquatus and Komarkovaea. The two new species of Albertania, A. egbensis and A. latericola, were from the same sample, but were evolutionarily separate based on 16S rRNA gene phylogenies, percent identity below the 98.7% threshold, and ITS rRNA percent dissimilarity >7.0%. Egbenema aeruginosum gen. et sp. nov. was phylogenetically separated from Trichotorquatus and Albertania but was in a clade with other strains belonging to Egbenema. The two Egbenema strains from the United States are here named Egbenema epilithicum sp. nov. and Egbenema gypsiphilum sp. nov. Our results support the hypothesis that further species discoveries of novel cyanobacteria will likely be made in soils and subaerial habitats, as these habitats continue to be studied, both in tropical and temperate biomes.
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Affiliation(s)
- Mildred U Akagha
- Department of Biology, John Carroll University, University Heights, Ohio, USA
| | - Nicole Pietrasiak
- School of Life Sciences, University of Nevada-Las Vegas, Las Vegas, Nevada, USA
- Plant & Environmental Sciences Department, New Mexico State University, Las Cruces, New Mexico, USA
| | - David F Bustos
- US DOI White Sands National Park, Alamogordo, New Mexico, USA
| | - Alžběta Vondrášková
- Department of Botany, Faculty of Science, University of South Bohemia, České Budějovice, Czechia
| | - Sandra C Lamb
- Department of Marine Sciences, University of Lagos, Akoka, Nigeria
| | - Jeffrey R Johansen
- Department of Biology, John Carroll University, University Heights, Ohio, USA
- Department of Botany, Faculty of Science, University of South Bohemia, České Budějovice, Czechia
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Carmona Jiménez J, Caro Borrero A, Becerra-Absalón I, Perona Urizar E, Márquez Santamaría K, Mateo Ortega P. Description of two new species of Nostoc (Nostocales, Cyanobacteria) from central Mexico, using morphological, ecological, and molecular attributes. JOURNAL OF PHYCOLOGY 2023; 59:1237-1257. [PMID: 37889842 DOI: 10.1111/jpy.13401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 08/25/2023] [Accepted: 09/01/2023] [Indexed: 10/29/2023]
Abstract
The present study describes two new Nostoc species, N. montejanii and N. tlalocii, based on a polyphasic approach that combines morphological, ecological, and genetic characteristics. The five investigated populations, including those from newly collected material from central Mexico, were observed to possess morphological features characteristic of the Nostoc genus. Results showed that both new species are strictly associated with running water, and they show clear differences in their habitat preferences. The 16S rRNA gene sequences of the five strains displayed between 98% and 99% similarity to the genus Nostoc sensu stricto. The 16S rRNA gene phylogenetic analyses inferred using Bayesian inference, maximum likelihood, and parsimony methods, placed these five strains in two separate clades distinct from other Nostoc species. The secondary structures of the 16S-23S internal transcribed spacer rRNA region in the two new species showed >10.5% dissimilarities in the operons when compared with other Nostoc species. In addition, clear morphological differences were observed between the two Mexican species, including the color of the colonies (black in N. montejanii and green in N. tlalocii), the size of the cells (greater in N. montejanii), and the number of polyphosphate granules present in the cells (one in N. montejanii and up to four in N. tlalocii).
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Affiliation(s)
- Javier Carmona Jiménez
- Ecology and Natural Resources Department, Science Faculty, National Autonomous University of Mexico, Mexico City, Mexico
| | - Angela Caro Borrero
- Ecology and Natural Resources Department, Science Faculty, National Autonomous University of Mexico, Mexico City, Mexico
| | - Itzel Becerra-Absalón
- Comparative Biology Department, Science Faculty, National Autonomous University of Mexico, Mexico City, Mexico
| | - Elvira Perona Urizar
- Biology Department, Darwin 2, Science Faculty, Autonomous University of Madrid, Madrid, Spain
| | - Kenia Márquez Santamaría
- Ecology and Natural Resources Department, Science Faculty, National Autonomous University of Mexico, Mexico City, Mexico
| | - Pilar Mateo Ortega
- Biology Department, Darwin 2, Science Faculty, Autonomous University of Madrid, Madrid, Spain
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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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Cartusia hunanesis sp. nov. (Oculatellaceae, Oculatellales) from a Stream in China Based on Polyphasic Approach. DIVERSITY 2023. [DOI: 10.3390/d15030350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Abstract
Cartusia hunanesis sp. nov. was isolated from a stream in China, and two strains (ZJJ02 and ZJJ03) of which were inquired using morphological features, ecological evidence, and molecular data consisting of the 16S rRNA gene and 16S–23S rRNA intergenic transcribed spacer (ITS) region. Cartusia hunanesis varies from the type species Cartusia fontana by having only a single trichome in the sheath and large granules near the cross wall. The investigated strains of C. hunanesis were revealed to be a sister clade of C. fontana, according to the phylogenetic analysis based on the 16S rRNA gene. In addition, the Cartusia was clustered with the family Oculatellaceae members, genera Pegethrix and Elainella. These two strains displayed 97.6% similarity to C. fontana. The ITS region of C. hunanesis was found to be considerably distinct from that of C. fontana in terms of the secondary structure, which demonstrated that C. hunanesis is a novel species owing to the divergences in its morphological and genetic data compared with the related C. fontana.
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Strunecký O, Ivanova AP, Mareš J. An updated classification of cyanobacterial orders and families based on phylogenomic and polyphasic analysis. JOURNAL OF PHYCOLOGY 2023; 59:12-51. [PMID: 36443823 DOI: 10.1111/jpy.13304] [Citation(s) in RCA: 33] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 11/16/2022] [Indexed: 06/15/2023]
Abstract
Cyanobacterial taxonomy is facing a period of rapid changes thanks to the ease of 16S rRNA gene sequencing and established workflows for description of new taxa. Since the last comprehensive review of the cyanobacterial system in 2014 until 2021, at least 273 species in 140 genera were newly described. These taxa were mainly placed into previously defined orders and families although several new families were proposed. However, the classification of most taxa still relied on hierarchical relationships inherited from the classical morphological taxonomy. Similarly, the obviously polyphyletic orders such as Synechococcales and Oscillatoriales were left unchanged. In this study, the rising number of genomic sequences of cyanobacteria and well-described reference strains allowed us to reconstruct a robust phylogenomic tree for taxonomic purposes. A less robust but better sampled 16S rRNA gene phylogeny was mapped to the phylogenomic backbone. Based on both these phylogenies, a polyphasic classification throughout the whole phylum of Cyanobacteria was created, with ten new orders and fifteen new families. The proposed system of cyanobacterial orders and families relied on a phylogenomic tree but still employed phenotypic apomorphies where possible to make it useful for professionals in the field. It was, however, confirmed that morphological convergence of phylogenetically distant taxa was a frequent phenomenon in cyanobacteria. Moreover, the limited phylogenetic informativeness of the 16S rRNA gene, resulting in ambiguous phylogenies above the genus level, emphasized the integration of genomic data as a prerequisite for the conclusive taxonomic placement of a vast number of cyanobacterial genera in the future.
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Affiliation(s)
- Otakar Strunecký
- Faculty of Fisheries and Protection of Waters, CENAKVA, Institute of Aquaculture and Protection of Waters, University of South Bohemia in České Budějovice, Na Sádkách 1780, 370 05, České Budějovice, Czech Republic
| | - Anna Pavlovna Ivanova
- Faculty of Fisheries and Protection of Waters, CENAKVA, Institute of Aquaculture and Protection of Waters, University of South Bohemia in České Budějovice, Na Sádkách 1780, 370 05, České Budějovice, Czech Republic
| | - Jan Mareš
- Biology Centre of the CAS, Institute of Hydrobiology, Na Sádkách 702/7, 370 05, České Budějovice, Czech Republic
- Faculty of Science, Department of Botany, University of South Bohemia, Branišovská 1760, 370 05, České Budějovice, Czech Republic
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Trichotorquatus salinus sp. nov. (Oculatellaceae, Cyanobacteria) from a Saltern of Gomso, Republic of Korea. DIVERSITY 2023. [DOI: 10.3390/d15010065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Six strains of subaerial cyanobacteria were isolated from a Gomso saltern in the Republic of Korea, all of which were studied using morphological and molecular traits. Trichotorquatus salinus sp. nov. was studied using a light microscope (LM), transmission electron microscope (TEM), 16S rRNA, 16S–23S ITS region, and ecological data. T. salinus is a thin and simple filament with a false branch and a firm collar sheath. The phylogenetic analyses of 16S rRNA revealed that Trichotorquatus formed a monophyletic lineage and the strains of T. salinus formed a distinct clade among the species in the genus Trichotorquatus. In the statistical analysis, the inter-species genetic distance of the five species of Trichotorquatus, including T. salinus, is shown to be greater than the distance of the previously reported species of Trichotorquatus. Additionally, 16S–23S ITS gene sequences between T. salinus and four species of Trichotorquatus showed dissimilarities of 55.3–59.4%. In the secondary structure of 16S–23S ITS region (type 2 operon), D1–D1′, Box-B, and V3 helix of T. salinus were different from the other taxa in the genus Trichotorquatus. These results demonstrate that T. salinus sp. nov. has unique morphological, ecological, and molecular traits. Therefore, we propose that T. salinus sp. nov. is a novel species belonging to the genus Trichotorquatus.
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Kumar N, Saraf A, Pal S, Mishra D, Singh P. Insights into the phylogenetic inconsistencies of the genus Amazonocrinis and description of epilithic Amazonocrinis malviyae sp. nov. (Cyanobacteria, Nostocales) from Jammu and Kashmir, India. Int J Syst Evol Microbiol 2022; 72. [PMID: 36748427 DOI: 10.1099/ijsem.0.005658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
A dark-coloured thin film of cyanobacteria growing on the bottom of a submerged stone was isolated from Basantgarh village in Udhampur district, Jammu and Kashmir, India. The isolated strain (designated 19C-PST) was characterized using a polyphasic approach. The strain exhibited typical Nostoc-like morphology with a characteristic feature of having heterocytes in series. The 16S rRNA gene phylogeny placed the strain at a well-supported and distinct node. Notably, the recently described genus, Amazonocrinis, on the addition of more 16S rRNA gene sequences, reflected a critical split, which proved to be stable and well supported in all phylogenetic analyses of the 16S rRNA gene. Interestingly, Amazonocrinis nigriterrae CENA67T (type species of the genus) clustered together with our strain 19C-PST in the 16S rRNA gene phylogenetic analysis while the rest of the members of the genus Amazonocrinis were placed at a separate and distant node. This clearly indicated that strain 19C-PST is a member of Amazonocrinis sensu stricto. However, the results of phylogenetic analysis of ITS sequences only, in strains purported to belong to Amazonocrinis did not agree with the 16S rRNA gene results and placed our strain 19C-PST in a sister clade to three strains that have not yet been speciated, UHCC 0702, NIES-4103 and SA22, with A. nigriterrae falling into a separate clade. Further, folded secondary structures of the D1-D1', V2, BoxB and V3 helices of strain 19C-PST were found to be significantly different from those of all the phylogenetically related taxa. The study revealed an interesting case where low taxon sampling and phylogenomic interpretations came across as points of attention in cyanobacterial taxonomy. Based on the morphological, phylogenetic, 16S-23S ITS secondary structure analyses, we describe our strain as Amazonocrinis malviyae sp. nov. in accordance with the International Code of Nomenclature for algae, fungi and plants. This work also illuminates the need for further research to resolve the taxonomic discrepancies among Amazonocrinis strains.
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Affiliation(s)
- Naresh Kumar
- Department of Botany, Institute of Science, Banaras Hindu University, Varanasi - 221005, India
| | - Aniket Saraf
- Ramniranjan Jhunjhunwala College, Ghatkopar- 400086, Mumbai, India
| | - Sagarika Pal
- Department of Botany, Institute of Science, Banaras Hindu University, Varanasi - 221005, India
| | - Deeksha Mishra
- Department of Botany, Institute of Science, Banaras Hindu University, Varanasi - 221005, India
| | - Prashant Singh
- Department of Botany, Institute of Science, Banaras Hindu University, Varanasi - 221005, India
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Pal S, Saraf A, Kumar N, Singh P. Phycological exploration of the global biodiversity hotspots of Northeast India: discovery of a new species of soil-dwelling cyanobacteria, Desikacharya kailashaharensis sp. nov. FEMS Microbiol Lett 2022; 369:6758503. [PMID: 36220146 DOI: 10.1093/femsle/fnac099] [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: 05/31/2022] [Revised: 09/10/2022] [Accepted: 10/10/2022] [Indexed: 12/13/2022] Open
Abstract
A soil-dwelling cyanobacterial strain (KLS-BP-3A_PS), has been isolated from the biodiversity rich Northeast region of India and characterized using a polyphasic approach. The strain was collected from a field covered with grass, near a stream from the Unakoti district of Tripura. Upon culturing in the laboratory, initial studies indicated the strain to be showing typical Nostoc or Nostoc-like morphology. Subsequently, 16S rRNA gene phylogenetic analyses using Neighbour joining, Maximum-likelihood, and Bayesian inference methods gave a distinct and stable positioning of the strain inside the genus Desikacharya. Upon recovery of the full-length operon of the 16S-23S ITS region with both tRNAs (tRNAIle and tRNAAla), the folded secondary structures revealed unique patterns of the D1-D1', V2, Box-B, and V3 regions of the strain KLS-BP-3A_PS as compared to phylogenetically related species of the genus Desikacharya. The total evidence approach indicated conclusively that the strain under investigation is a new species of the genus Desikacharya, which we describe as Desikacharya kailashaharensis in accordance with the International Code of Nomenclature for algae, fungi, and plants. Further, 16S rRNA gene phylogeny and evaluation of the 16S-23S ITS operons along with implying a re-examination of the family level affiliation of Desikacharya as well its generic limits may be in order. Notably, this study brings into focus the very less explored Northeast region of India which shares two global biodiversity hotspots in the world.
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Affiliation(s)
- Sagarika Pal
- Laboratory of Cyanobacterial Systematics and Stress Biology, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Aniket Saraf
- Department of Biological Science, Ramniranjan Jhunjhunwala College of Arts, Science and Commerce, Ghatkopar-400086, Mumbai, Maharashtra, India
| | - Naresh Kumar
- Laboratory of Cyanobacterial Systematics and Stress Biology, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Prashant Singh
- Laboratory of Cyanobacterial Systematics and Stress Biology, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi-221005, India
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Pal S, Saraf A, Kumar N, Singh A, Talukdar U, Kohar N, Singh P. Digging deeper into the taxonomy of Cylindrospermum and description of Johanseniella tripurensis gen. et sp. nov. from India. FEMS Microbiol Lett 2022; 369:6659193. [PMID: 35945653 DOI: 10.1093/femsle/fnac074] [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: 05/20/2022] [Revised: 06/24/2022] [Accepted: 08/05/2022] [Indexed: 11/12/2022] Open
Abstract
The wet soil-inhabiting cyanobacterium URH-6-PS was collected from the state of Tripura, India, and characterized using a polyphasic approach. Initial microscopic analysis indicated the strain to be a member of the genus Cylindrospermum, however, the 16S rRNA gene phylogenetic analysis showed some interesting results. The strain URH-6-PS clustered in the Clade I which positioned itself outside the Cylindrospermum sensu stricto clade with strong probability/bootstrap support, indicating that the strain may not belong to the genus Cylindrospermum. Further, analysis of the 16S-23S ITS region using the folded secondary structures of the D1-D1', Box-B and V3 helices and the 16S-23S ITS percentage dissimilarity values clearly indicated the distinctiveness of strain URH-6-PS from other members of the Clade I. The detailed investigations conducted in this study provided sufficient evidence that the taxonomic status of the members of Clade I need to be revised. Interestingly, all members of the clade I originated from tropical and sub-tropical habitats while members of the Cylindrospermum sensu stricto clade have been reported from temperate conditions. Previous studies had also indicated the possibility of the formation of tropical and subtropical Cylindrospermum-like genera and thus, this comes across as a much-awaited study to resolve the taxonomic complexities around the genus Cylindrospermum. Based on the results obtained in this study and the trends observed in the earlier studies, we describe a novel Cylindrospermum-like genus Johanseniella gen. nov., with the type species Johanseniella tripurensis sp. nov. in accordance with the International Code of Nomenclature of algae, fungi and plants.
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Affiliation(s)
| | - Aniket Saraf
- Ramniranjan Jhunjhunwala College of Arts, Science and Commerce, Ghatkopar, Mumbai
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Baldarelli LM, Pietrasiak N, Osorio-Santos K, Johansen JR. Mojavia aguilerae and M. dolomitestris - two new Nostocaceae (Cyanobacteria) species from the Americas. JOURNAL OF PHYCOLOGY 2022; 58:502-516. [PMID: 35727130 DOI: 10.1111/jpy.13275] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 02/26/2022] [Indexed: 06/15/2023]
Abstract
While nostocacean cyanobacteria are ubiquitous and play critical roles in terrestrial ecosystems, their taxonomy and biogeography still entail mysteries. We isolated two Nostoc-like cyanobacteria from biological soil crusts of the Atacama (Chile) and Mojave (USA) Deserts. An initial 16S rRNA gene phylogeny placed both in monophyly with Mojavia pulchra. Here, we describe two new species of the previously monotypic Mojavia using a polyphasic approach including morphology, 16S rRNA phylogenies, secondary structure, and percent similarity of the 16S-23S ITS region. Like M. pulchra, both new species produce compact microcolonies, arthrospore-like akinetes, and monocytes, traits characteristic of the genus. Mojavia aguilerae sp. nov. is morphologically distinct from both other species in producing bluntly conical end cells, abundant enlarged akinetes in multiseriate filaments, and gold-colored cells during senescence. Mojavia dolomitestris sp. nov. exhibited distinctly firm, light-colored, compartmentalized mucilage. M. dolomitestris is somewhat cryptic with M. pulchra, but has more densely packed microcolonies, rarity and later onset of brownish sheath pigmentation, and an origin from soils derived from dolomite. The two new species strengthened the position of Mojavia as a robust genus sister to Nostoc. Although 16S rRNA gene data could not separate the Mojavia species from each other, the three species showed distinct dissimilarities in secondary ITS structure and differed greatly from Nostoc sensu stricto. The high dissimilarities between their 16S-23S ITS regions suggest a long evolutionary history of the three species as separate lineages. Mojavia is an evolutionary and ecologically unique nostocacean genus, and its rarity and restricted habitat point to an urgent need for recognition and protection.
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Affiliation(s)
- Lauren M Baldarelli
- Department of Biological Sciences, Kent State University, Kent, Ohio, 44242, USA
| | - Nicole Pietrasiak
- Plant and Environmental Sciences Department, New Mexico State University, 945 College Drive. Las Cruces, New Mexico, 88003, USA
| | - Karina Osorio-Santos
- Departamento de Biología Comparada, Universidad Nacional Autónoma de México (UNAM), Colonia Coyoacán, Código Postal 04451070474, P.O. Box 70-474, Ciudad de México, Mexico
| | - Jeffrey R Johansen
- Department of Biology, John Carroll University, University Heights, Ohio, 44118, USA
- Department of Botany, Faculty of Sciences, University of South Bohemia, Branišovská 31, České Budějovice, 370 05, Czech Republic
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12
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Alvarenga DO, Andreote APD, Branco LHZ, Delbaje E, Cruz RB, Varani ADM, Fiore MF. Amazonocrinis nigriterrae gen. nov., sp. nov., Atlanticothrix silvestris gen. nov., sp. nov. and Dendronalium phyllosphericum gen. nov., sp. nov., nostocacean cyanobacteria from Brazilian environments. Int J Syst Evol Microbiol 2021; 71. [PMID: 34032563 DOI: 10.1099/ijsem.0.004811] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The cyanobacterial genus Nostoc is an important contributor to carbon and nitrogen bioavailability in terrestrial ecosystems and a frequent partner in symbiotic relationships with non-diazotrophic organisms. However, since this currently is a polyphyletic genus, the diversity of Nostoc-like cyanobacteria is considerably underestimated at this moment. While reviewing the phylogenetic placement of previously isolated Nostoc-like cyanobacteria originating from Brazilian Amazon, Caatinga and Atlantic forest samples, we detected 17 strains isolated from soil, freshwater, rock and tree surfaces presenting patterns that diverged significantly from related strains when ecological, morphological, molecular and genomic traits were also considered. These observations led to the identification of the evaluated strains as representative of three novel nostocacean genera and species: Amazonocrinis nigriterrae gen. nov., sp. nov.; Atlanticothrix silvestris gen. nov., sp. nov.; and Dendronalium phyllosphericum gen. nov., sp. nov., which are herein described according to the rules of the International Code of Nomenclature for algae, fungi and plants. This finding highlights the great importance of tropical and equatorial South American ecosystems for harbouring an unknown microbial diversity in the face of the anthropogenic threats with which they increasingly struggle.
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Affiliation(s)
- Danillo Oliveira Alvarenga
- Department of Biology, University of Copenhagen (UCPH), Copenhagen 2100, Denmark.,University of São Paulo (USP), Center for Nuclear Energy in Agriculture, Piracicaba, São Paulo 13416-000, Brazil
| | - Ana Paula Dini Andreote
- University of São Paulo (USP), Center for Nuclear Energy in Agriculture, Piracicaba, São Paulo 13416-000, Brazil
| | - Luis Henrique Zanini Branco
- São Paulo State University (UNESP), Institute of Biosciences, Humanities and Exact Sciences, São José do Rio Preto, São Paulo 15054-000, Brazil
| | - Endrews Delbaje
- University of São Paulo (USP), Center for Nuclear Energy in Agriculture, Piracicaba, São Paulo 13416-000, Brazil
| | - Renata Beatriz Cruz
- University of São Paulo (USP), Center for Nuclear Energy in Agriculture, Piracicaba, São Paulo 13416-000, Brazil
| | - Alessandro de Mello Varani
- São Paulo State University (UNESP), School of Agricultural and Veterinarian Sciences, Jaboticabal, São Paulo 14884-900, Brazil
| | - Marli Fátima Fiore
- University of São Paulo (USP), Center for Nuclear Energy in Agriculture, Piracicaba, São Paulo 13416-000, Brazil
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13
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Pietrasiak N, Reeve S, Osorio-Santos K, Lipson DA, Johansen JR. Trichotorquatus gen. nov. - a new genus of soil cyanobacteria discovered from American drylands 1. JOURNAL OF PHYCOLOGY 2021; 57:886-902. [PMID: 33583028 DOI: 10.1111/jpy.13147] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 11/15/2020] [Accepted: 12/06/2020] [Indexed: 05/25/2023]
Abstract
Cyanobacteria are crucial ecosystem components in dryland soils. Advances in describing α-level taxonomy are needed to understand what drives their abundance and distribution. We describe Trichotorquatus gen. nov. (Oculatellaceae, Synechococcales, Cyanobacteria) based on four new species isolated from dryland soils including the coastal sage scrub near San Diego, California (USA), the Mojave and Colorado Deserts with sites at Joshua Tree National Park and Mojave National Preserve, California (USA), and the Atacama Desert (Chile). The genus is morphologically characterized by having thin trichomes (<4.5 μm wide), cells both shorter and longer than wide, rarely occurring single and double false branching, necridia appearing singly or in rows, and sheaths with a distinctive collar-like fraying and widening mid-filament, the feature for which the genus is named. The genus is morphologically nearly identical with Leptolyngbya sensu stricto but is phylogenetically quite distant from that genus. It is consequently a cryptic genus that will likely be differentiated in future studies based on 16S rRNA sequence data. The type species, T. maritimus sp. nov. is morphologically distinct from the other three species, T. coquimbo sp. nov., T. andrei sp. nov. and T. ladouxae sp. nov. However, these latter three species are morphologically very close and are considered by the authors to be cryptic species. All species are separated phylogenetically based on sequence of the 16S-23S ITS region. Three distinct ribosomal operons were recovered from the genus, lending difficulty to recognizing further diversity in this morphologically cryptic genus.
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Affiliation(s)
- Nicole Pietrasiak
- Plant and Environmental Sciences Department, New Mexico State University, 945 College Drive, Las Cruces, New Mexico, 88003, USA
| | - Sharon Reeve
- Department of Biology, San Diego State University, 5500 Campanile Drive, Mail Code 4614, San Diego, California, 92182, USA
| | - Karina Osorio-Santos
- Departamento de Biología Comparada, Universidad Nacional Autónoma de México (UNAM), Colonia Coyoacán, Código Postal 04451070474, P.O. Box 70-474, Ciudad de México, México
| | - David A Lipson
- Department of Biology, San Diego State University, 5500 Campanile Drive, Mail Code 4614, San Diego, California, 92182, USA
| | - Jeffrey R Johansen
- Department of Biology, John Carroll University, University Heights, Ohio, 44118, USA
- Department of Botany, Faculty of Sciences, University of South Bohemia, Branišovská 31, České Budějovice, 370 05, Czech Republic
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14
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Cordeiro R, Azevedo J, Luz R, Vasconcelos V, Gonçalves V, Fonseca A. Cyanotoxin Screening in BACA Culture Collection: Identification of New Cylindrospermopsin Producing Cyanobacteria. Toxins (Basel) 2021; 13:toxins13040258. [PMID: 33916821 PMCID: PMC8065757 DOI: 10.3390/toxins13040258] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 04/01/2021] [Accepted: 04/01/2021] [Indexed: 12/05/2022] Open
Abstract
Microcystins (MCs), Saxitoxins (STXs), and Cylindrospermopsins (CYNs) are some of the more well-known cyanotoxins. Taking into consideration the impacts of cyanotoxins, many studies have focused on the identification of unknown cyanotoxin(s)-producing strains. This study aimed to screen strains from the Azorean Bank of Algae and Cyanobacteria (BACA) for MCs, STX, and CYN production. A total of 157 strains were searched for mcy, sxt, and cyr producing genes by PCR, toxin identification by ESI-LC-MS/MS, and cyanotoxin-producing strains morphological identification and confirmation by 16S rRNA phylogenetic analysis. Cyanotoxin-producing genes were amplified in 13 strains and four were confirmed as toxin producers by ESI-LC-MS/MS. As expected Aphanizomenon gracile BACA0041 was confirmed as an STX producer, with amplification of genes sxtA, sxtG, sxtH, and sxtI, and Microcystis aeruginosa BACA0148 as an MC-LR producer, with amplification of genes mcyC, mcyD, mcyE, and mcyG. Two nostocalean strains, BACA0025 and BACA0031, were positive for both cyrB and cyrC genes and ESI-LC-MS/MS confirmed CYN production. Although these strains morphologically resemble Sphaerospermopsis, the 16S rRNA phylogenetic analysis reveals that they probably belong to a new genus.
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Affiliation(s)
- Rita Cordeiro
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Pólo dos Açores, Universidade dos Açores, 9500-321 Ponta Delgada, Portugal; (R.L.); (V.G.); (A.F.)
- Faculdade de Ciências e Tecnologia, Universidade dos Açores, 9500-321 Ponta Delgada, Portugal
- Correspondence:
| | - Joana Azevedo
- Interdisciplinary Centre of Marine and Environmental Research—CIIMAR/CIMAR, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal; (J.A.); (V.V.)
| | - Rúben Luz
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Pólo dos Açores, Universidade dos Açores, 9500-321 Ponta Delgada, Portugal; (R.L.); (V.G.); (A.F.)
- Faculdade de Ciências e Tecnologia, Universidade dos Açores, 9500-321 Ponta Delgada, Portugal
| | - Vitor Vasconcelos
- Interdisciplinary Centre of Marine and Environmental Research—CIIMAR/CIMAR, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal; (J.A.); (V.V.)
- Department of Biology, Faculty of Sciences, University of Porto, 4069-007 Porto, Portugal
| | - Vítor Gonçalves
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Pólo dos Açores, Universidade dos Açores, 9500-321 Ponta Delgada, Portugal; (R.L.); (V.G.); (A.F.)
- Faculdade de Ciências e Tecnologia, Universidade dos Açores, 9500-321 Ponta Delgada, Portugal
| | - Amélia Fonseca
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Pólo dos Açores, Universidade dos Açores, 9500-321 Ponta Delgada, Portugal; (R.L.); (V.G.); (A.F.)
- Faculdade de Ciências e Tecnologia, Universidade dos Açores, 9500-321 Ponta Delgada, Portugal
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15
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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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16
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Mishra D, Saraf A, Kumar N, Pal S, Singh P. Issues in cyanobacterial taxonomy: comprehensive case study of unbranched, false branched and true branched heterocytous cyanobacteria. FEMS Microbiol Lett 2021; 368:6102548. [PMID: 33452884 DOI: 10.1093/femsle/fnab005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Accepted: 01/14/2021] [Indexed: 01/25/2023] Open
Abstract
The order Nostocales is represented by morphologically diverse forms with respect to the branching patterns and polarity of the filaments. With growing understanding of taxonomy and systematics, members of the order Nostocales have also undergone multiple taxonomic revisions. The last decade has seen a surge in the description of new genera and families within the order Nostocales. In this study, we discuss the taxonomic status of all the newly described and reclassified taxa of some of the prominent morphological forms within the order Nostocales by constructing comprehensive phylogenetic trees. Further, we propose certain strategies that would contribute to resolving the taxonomic complexities arising due to inadequate taxon sampling.
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Affiliation(s)
- Deeksha Mishra
- Laboratory of Cyanobacterial Systematics and Stress Biology, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Aniket Saraf
- Department of Botany, Ramniranjan Jhunjhunwala College, Ghatkopar, Mumbai, India
| | - Naresh Kumar
- Laboratory of Cyanobacterial Systematics and Stress Biology, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Sagarika Pal
- Laboratory of Cyanobacterial Systematics and Stress Biology, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Prashant Singh
- Laboratory of Cyanobacterial Systematics and Stress Biology, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi-221005, India
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17
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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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18
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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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19
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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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20
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Riba M, Kiss-Szikszai A, Gonda S, Parizsa P, Deák B, Török P, Valkó O, Felföldi T, Vasas G. Chemotyping of terrestrial Nostoc-like isolates from alkali grassland areas by non-targeted peptide analysis. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.101798] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Moura KAF, Lizieri C, Wittig Franco M, Vaz MGMV, Araújo WL, Convey P, Barbosa FAR. Physiological and thylakoid ultrastructural changes in cyanobacteria in response to toxic manganese concentrations. ECOTOXICOLOGY (LONDON, ENGLAND) 2019; 28:1009-1021. [PMID: 31471822 DOI: 10.1007/s10646-019-02098-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 08/12/2019] [Indexed: 06/10/2023]
Abstract
In this study, two cyanobacterial strains (morphologically identified as Microcystis novacekii BA005 and Nostoc paludosum BA033) were exposed to different Mn concentrations: 7.0, 10.5, 15.7, 23.6 and 35.4 mg L-1 for BA005; and 15.0, 22.5, 33.7, 50.6, and 76.0 mg L-1 for BA033. Manganese toxicity was assessed by growth rate inhibition (EC50), chlorophyll a content, quantification of Mn accumulation in biomass and monitoring morphological and ultrastructural effects. The Mn EC50 values were 16 mg L-1 for BA005 and 39 mg L-1 for BA033, respectively. Reduction of chlorophyll a contents and ultrastructural changes were observed in cells exposed to Mn concentrations greater than 23.6 and 33.7 mg L-1 for BA005 and BA033. Damage to intrathylakoid spaces, increased amounts of polyphosphate granules and an increased number of carboxysomes were observed in both strains. In the context of the potential application of these strains in bioremediation approaches, BA005 was able to remove Mn almost completely from aqueous medium after 96 h exposure to an initial concentration of 10.5 mg L-1, and BA033 was capable of removing 38% when exposed to initial Mn concentration of 22.5 mg L-1. Our data shed light on how these cyanobacterial strains respond to Mn stress, as well as supporting their utility as organisms for monitoring Mn toxicity in industrial wastes and potential bioremediation application.
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Affiliation(s)
- Karen Ann Ferreira Moura
- Laboratório de Limnologia, Ecotoxicologia e Ecologia Aquática, Instituto de Ciências Biológicas, B. I3, 163, Universidade Federal de Minas Gerais, Avenida Antonio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Claudineia Lizieri
- Laboratório de Limnologia, Ecotoxicologia e Ecologia Aquática, Instituto de Ciências Biológicas, B. I3, 163, Universidade Federal de Minas Gerais, Avenida Antonio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Maione Wittig Franco
- Laboratório de Limnologia, Ecotoxicologia e Ecologia Aquática, Instituto de Ciências Biológicas, B. I3, 163, Universidade Federal de Minas Gerais, Avenida Antonio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
| | - 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
| | - Peter Convey
- British Antarctic Survey, NERC, High Cross, Madingley Road, Cambridge, CB3 0ET, UK
| | - Francisco Antônio Rodrigues Barbosa
- Laboratório de Limnologia, Ecotoxicologia e Ecologia Aquática, Instituto de Ciências Biológicas, B. I3, 163, Universidade Federal de Minas Gerais, Avenida Antonio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-901, Brazil
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22
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Volatile Compounds Produced by Cyanobacteria Isolated from Mangrove Environment. Curr Microbiol 2019; 76:575-582. [DOI: 10.1007/s00284-019-01658-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 02/22/2019] [Indexed: 10/27/2022]
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23
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Saraf AG, Dawda HG, Singh P. Desikacharya gen. nov., a phylogenetically distinct genus of Cyanobacteria along with the description of two new species, Desikacharya nostocoides sp. nov. and Desikacharya soli sp. nov., and reclassification of Nostoc thermotolerans to Desikacharya thermotolerans comb. nov. Int J Syst Evol Microbiol 2019; 69:307-315. [DOI: 10.1099/ijsem.0.003093] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Affiliation(s)
- Aniket G. Saraf
- 1Ramniranjan Jhunjhunwala College, Ghatkopar, Mumbai, India
| | | | - Prashant Singh
- 2Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, India
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24
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Caires TA, da Silva AM, Vasconcelos VM, Affe HM, de Souza Neta LC, Boness HV, Sant'Anna CL, Nunes JM. Biotechnological potential of Neolyngbya (Cyanobacteria), a new marine benthic filamentous genus from Brazil. ALGAL RES 2018. [DOI: 10.1016/j.algal.2018.10.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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25
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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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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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Saraf A, Dawda HG, Suradkar A, Batule P, Behere I, Kotulkar M, Kumat A, Singh P. Insights into the phylogeny of false-branching heterocytous cyanobacteria with the description of Scytonema pachmarhiense sp. nov. isolated from Pachmarhi Biosphere Reserve, India. FEMS Microbiol Lett 2018; 365:5047304. [DOI: 10.1093/femsle/fny160] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Indexed: 01/26/2023] Open
Affiliation(s)
- Aniket Saraf
- Department of Botany, Ramniranjan Jhunjhunwala College, Ghatkopar, Mumbai 400086, Maharashtra, India
- National Centre for Microbial Resource, National Centre for Cell Science, Pune-411021, Maharashtra, India
| | - Himanshu G Dawda
- Department of Botany, Ramniranjan Jhunjhunwala College, Ghatkopar, Mumbai 400086, Maharashtra, India
| | - Archana Suradkar
- National Centre for Microbial Resource, National Centre for Cell Science, Pune-411021, Maharashtra, India
| | - Priyanka Batule
- National Centre for Microbial Resource, National Centre for Cell Science, Pune-411021, Maharashtra, India
| | - Isha Behere
- National Centre for Microbial Resource, National Centre for Cell Science, Pune-411021, Maharashtra, India
| | - Manasi Kotulkar
- National Centre for Microbial Resource, National Centre for Cell Science, Pune-411021, Maharashtra, India
| | - Ankita Kumat
- National Centre for Microbial Resource, National Centre for Cell Science, Pune-411021, Maharashtra, India
| | - Prashant Singh
- National Centre for Microbial Resource, National Centre for Cell Science, Pune-411021, Maharashtra, India
- Department of Botany, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
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Pham HTL, Nguyen LTT, Duong TA, Bui DTT, Doan QT, Nguyen HTT, Mundt S. Diversity and bioactivities of nostocacean cyanobacteria isolated from paddy soil in Vietnam. Syst Appl Microbiol 2017; 40:470-481. [PMID: 29100656 DOI: 10.1016/j.syapm.2017.08.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 08/05/2017] [Accepted: 08/14/2017] [Indexed: 11/18/2022]
Abstract
Nostocacean cyanobacteria are one of the important components of paddy fields due to their ability to fix atmospheric nitrogen and supply phytohormones for crop growth. In this study, 13 Nostoc strains isolated from paddy soils in Vietnam were classified using a polyphasic approach. The results showed a high diversity of the isolated strains that represented seven morphotypes corresponding to five genotypes, with 16S rRNA gene sequence similarity values ranging between 94.97-99.78% compared to the available sequences from GenBank. Bioassay assessment revealed that 11 out of 13 strains possessed antibacterial activities, three of which exhibited cytotoxic activities on MCF7 and HCT116 cells with an IC50 ranging from 47.8μgmL-1 to 232.0μgmL-1. Interestingly, strains with identical 16S rRNA gene sequences displayed different antibacterial and cytotoxic activity profiles.
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Affiliation(s)
- Hang T L Pham
- Faculty of Biology, VNU University of Science, Hanoi, Vietnam; The Key Laboratory of Enzyme and Protein Technology, VNU University of Science, Hanoi, Vietnam.
| | - Lien T T Nguyen
- Institute of Biotechnology, Hue University, Thua Thien Hue, Vietnam
| | - Tuan A Duong
- Department of Genetics, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa
| | - Dung T T Bui
- Faculty of Biology, VNU University of Science, Hanoi, Vietnam
| | - Que T Doan
- Faculty of Biology, VNU University of Science, Hanoi, Vietnam
| | - Ha T T Nguyen
- Faculty of Biology, VNU University of Science, Hanoi, Vietnam
| | - Sabine Mundt
- Department of Pharmaceutical Biology, Institute of Pharmacy, Ernst-Moritz-Arndt University, 17491 Greifswald, Germany
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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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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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Genuário DB, Andreote APD, Vaz MGMV, Fiore MF. Heterocyte-forming cyanobacteria from Brazilian saline-alkaline lakes. Mol Phylogenet Evol 2017; 109:105-112. [DOI: 10.1016/j.ympev.2016.12.032] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 12/22/2016] [Accepted: 12/28/2016] [Indexed: 10/20/2022]
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The current status of cyanobacterial nomenclature under the "prokaryotic" and the "botanical" code. Antonie Van Leeuwenhoek 2017; 110:1257-1269. [PMID: 28243951 DOI: 10.1007/s10482-017-0848-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Accepted: 02/21/2017] [Indexed: 10/20/2022]
Abstract
Cyanobacterial taxonomy developed in the botanical world because Cyanobacteria/Cyanophyta have traditionally been identified as algae. However, they possess a prokaryotic cell structure, and phylogenetically they belong to the Bacteria. This caused nomenclature problems as the provisions of the International Code of Nomenclature for algae, fungi, and plants (ICN; the "Botanical Code") differ from those of the International Code of Nomenclature of Prokaryotes (ICNP; the "Prokaryotic Code"). While the ICN recognises names validly published under the ICNP, Article 45(1) of the ICN has not yet been reciprocated in the ICNP. Different solutions have been proposed to solve the current problems. In 2012 a Special Committee on the harmonisation of the nomenclature of Cyanobacteria was appointed, but its activity has been minimal. Two opposing proposals to regulate cyanobacterial nomenclature were recently submitted, one calling for deletion of the cyanobacteria from the groups of organisms whose nomenclature is regulated by the ICNP, the second to consistently apply the rules of the ICNP to all cyanobacteria. Following a general overview of the current status of cyanobacterial nomenclature under the two codes we present five case studies of genera for which nomenclatural aspects have been discussed in recent years: Microcystis, Planktothrix, Halothece, Gloeobacter and Nostoc.
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Potamolinea gen. nov. (Oscillatoriales, Cyanobacteria): a phylogenetically and ecologically coherent cyanobacterial genus. Int J Syst Evol Microbiol 2016; 66:3632-3641. [DOI: 10.1099/ijsem.0.001243] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Bravakos P, Kotoulas G, Skaraki K, Pantazidou A, Economou-Amilli A. A polyphasic taxonomic approach in isolated strains of Cyanobacteria from thermal springs of Greece. Mol Phylogenet Evol 2016; 98:147-60. [DOI: 10.1016/j.ympev.2016.02.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 02/08/2016] [Accepted: 02/12/2016] [Indexed: 01/11/2023]
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35
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Franco MW, Ferreira FAG, Vasconcelos IF, Batista BL, Pujoni DGF, Magalhães SMS, Barbosa F, Barbosa FAR. Arsenic biotransformation by cyanobacteria from mining areas: evidences from culture experiments. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:18607-18615. [PMID: 26408110 DOI: 10.1007/s11356-015-5425-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Accepted: 09/14/2015] [Indexed: 06/05/2023]
Abstract
Elucidating the role of cyanobacteria in the biotransformation of arsenic (As) oxyanions is crucial to understand the biogeochemical cycle of this element and indicate species with potential for its bioremediation. In this study, we determined the EC50 for As(III) and As(V) and evaluated the biotransformation of As by Synechococcus sp. through high-performance liquid chromatography hyphenated to inductively coupled plasma mass spectrometry (HPLC-ICP-MS) and X-ray absorption fine structure spectroscopy (XAFS). Synechococcus sp. exhibited higher sensitivity to As(III) with an EC(50, 96 h) of 6.64 mg L(-1) that was approximately 400-fold lower than that for As(V). Even though the cells were exposed to concentrations of As(III) (6 mg L(-1)) approximately 67-fold lower than those of As(V) (400 mg L(-1)), similar intracellular concentrations of As (60.0 μg g(-1)) were observed after 30 days. As(V) was the predominant intracellular As species followed by As(III). Furthermore, organic As species such as monomethylarsonic acid (MMA) and dimethylarsinic acid (DMA) were observed in higher proportions after exposure to As(III). The differential toxicity among As oxyanions indicates that determining the redox state of As in the environment is fundamental to estimate toxicity risks to aquatic organisms. Synechococcus sp. demonstrated potential for its application in bioremediation due to the high accumulation of As and production of As organic compounds notably after exposure to As(III).
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Affiliation(s)
- Maione W Franco
- Laboratório de Limnologia, Ecotoxicologia e Ecologia Aquática, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais-UFMG, Belo Horizonte, MG, Brazil.
| | - Fernanda A G Ferreira
- Laboratório de Limnologia, Ecotoxicologia e Ecologia Aquática, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais-UFMG, Belo Horizonte, MG, Brazil
| | - Igor F Vasconcelos
- Departamento de Engenharia Metalúrgica e de Materiais, Universidade Federal do Ceará, Fortaleza, 60020-181, CE, Brazil
| | - Bruno L Batista
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, 09210-580, SP, Brazil
| | - Diego G F Pujoni
- Laboratório de Limnologia, Ecotoxicologia e Ecologia Aquática, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais-UFMG, Belo Horizonte, MG, Brazil
| | - Sérgia M S Magalhães
- Departamento de Farmácia Social, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Fernando Barbosa
- Laboratório de Toxicologia e Essencialidade de Metais, Faculdade de Ciências Farmacêuticas de Ribeirão Preto-USP, Ribeirão Preto, 14040-903, SP, Brazil
| | - Francisco A R Barbosa
- Laboratório de Limnologia, Ecotoxicologia e Ecologia Aquática, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais-UFMG, Belo Horizonte, MG, Brazil
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