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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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2
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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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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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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: 1] [Impact Index Per Article: 0.5] [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: 2] [Impact Index Per Article: 1.0] [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: 2] [Impact Index Per Article: 1.0] [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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Johansen JR, González-Resendiz L, Escobar-Sánchez V, Segal-Kischinevzky C, Martínez-Yerena J, Hernández-Sánchez J, Hernández-Pérez G, León-Tejera H. When will taxonomic saturation be achieved? A case study in Nunduva and Kyrtuthrix (Rivulariaceae, Cyanobacteria). JOURNAL OF PHYCOLOGY 2021; 57:1699-1720. [PMID: 34289115 DOI: 10.1111/jpy.13201] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 05/12/2021] [Accepted: 06/08/2021] [Indexed: 06/13/2023]
Abstract
A number of heterocytous, mat-forming, tapering cyanobacteria in Rivulariaceae have recently been observed in both the Atlantic and Pacific coasts in the rocky intertidal and supratidal zones. These belong to the genera Nunduva, Kyrtuthrix, and Phyllonema and have been the subject of several recent studies. Herein, two new species of Nunduva (N. komarkovae and N. sanagustinensis) and two new species of Kyrtuthrix (K. munecosensis and K. totonaca) are characterized and described from the coasts of Mexico. Genetic separation based on the 16S-23S ITS region was pronounced (>10% in all comparisons). Morphological differences between all existing species in these two genera were also observed, but the group is morphologically complex, and these taxa are considered pseudocryptic. Nunduva and Kyrtuthrix remain morphologically and phylogenetically separate even with the addition of new species. However, how long will this remain the case? Many new genera and species of cyanobacteria have recently been described. Will the taxonomy of cyanobacteria eventually become saturated? Will we start to see multiple populations for the same cryptic species, or will future taxonomists collapse multiple species into fewer species, or multiple genera into single genera. The description of even more Nunduva and Kyrtuthrix species causes us to pause and evaluate the future of cyanobacterial taxonomy. These same questions are faced by algal taxonomists studying other phyla, and the resolution may ultimately be similar.
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Affiliation(s)
- Jeffrey R Johansen
- Department of Biology, John Carroll University, University Heights, Ohio, 44118, USA
- Department of Botany, University of South Bohemia, Branišovská 1760, Česke Budějovice, 370 05, Czech Republic
| | - Laura González-Resendiz
- Departamento de Procesos y Tecnología, Universidad Autónoma Metropolitana- Cuajimalpa, Av. Vasco de Quiroga 4871, Ciudad de México, C.P. 053000, Mexico
| | - Viviana Escobar-Sánchez
- Departamento de Biología Celular, Facultad de Ciencias, Universidad Nacional Autónoma de México (UNAM), Coyoacán, Código Postal, Ciudad de México, 04510, Mexico
| | - Claudia Segal-Kischinevzky
- Departamento de Biología Celular, Facultad de Ciencias, Universidad Nacional Autónoma de México (UNAM), Coyoacán, Código Postal, Ciudad de México, 04510, Mexico
| | - José Martínez-Yerena
- Departamento de Biología Comparada, Facultad de Ciencias, Universidad Nacional Autónoma de México (UNAM), Coyoacán, Código Postal, Ciudad de México, 04510, Mexico
| | - Joaquín Hernández-Sánchez
- Departamento de Biología Comparada, Facultad de Ciencias, Universidad Nacional Autónoma de México (UNAM), Coyoacán, Código Postal, Ciudad de México, 04510, Mexico
| | - Gabriela Hernández-Pérez
- Departamento de Biología Comparada, Facultad de Ciencias, Universidad Nacional Autónoma de México (UNAM), Coyoacán, Código Postal, Ciudad de México, 04510, Mexico
| | - Hilda León-Tejera
- Departamento de Biología Comparada, Facultad de Ciencias, Universidad Nacional Autónoma de México (UNAM), Coyoacán, Código Postal, Ciudad de México, 04510, Mexico
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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: 8] [Impact Index Per Article: 2.7] [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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12
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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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13
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Chavadar M, Saraf A, Suradkar A, Mishra D, Kumar N, Singh P. Constrictifilum karadense gen. et sp. nov., a new Nostocalean genus from Maharashtra, India. FEMS Microbiol Lett 2021; 368:6283742. [PMID: 34036335 DOI: 10.1093/femsle/fnab057] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 05/21/2021] [Indexed: 11/13/2022] Open
Abstract
A freshwater dwelling cyanobacterium (strain MKW3) was isolated from a sample collected from a water logged sugarcane field located in Malkapur, Karad, Maharashtra, India, and was characterized using a polyphasic approach. In the 16S rRNA gene phylogenetic analysis, strain MKW3 clustered with two misidentified strains-Nostoc sp. CENA239 and Calothrix sp. NIES2100. The phylogenetically related members included strains identified as Nostoc, Aulosira, Calothrix, Tolypothrix, Camptylonemopsis and Microchaete. The phylogenetic and the morphological analysis of the strain MKW3 indicated that it does not belong to any of the above mentioned genera. Furthermore, the 16S-23S ITS secondary structure analysis provided clear evidence indicating that strain MKW3 is different from Nostoc sp. CENA239 and Calothrix sp. NIES2100. Based on the morphological, phylogenetic and 16S-23S ITS secondary structure analysis we describe our strain as Constrictifilum karadense gen. et sp. nov. in accordance with the International Code of Nomenclature for algae, fungi and plants.
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Affiliation(s)
- Mahesh Chavadar
- National Centre for Microbial Resource (NCMR), National Centre for Cell Sciences, Pune-411021, Maharashtra, India
| | - Aniket Saraf
- Department of Botany, Ramniranjan Jhunjhunwala College, Ghatkopar-400086, Mumbai, Maharashtra, India
| | - Archana Suradkar
- National Centre for Microbial Resource (NCMR), National Centre for Cell Sciences, Pune-411021, Maharashtra, India
| | - Deeksha Mishra
- Laboratory of Cyanobacterial Systematics and Stress Biology, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi-221005, Uttar Pradesh, India
| | - Naresh Kumar
- Laboratory of Cyanobacterial Systematics and Stress Biology, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi-221005, Uttar Pradesh, India
| | - Prashant Singh
- Laboratory of Cyanobacterial Systematics and Stress Biology, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi-221005, Uttar Pradesh, India
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14
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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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15
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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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16
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Furey PC, Lee SS, Clemans DL. Substratum-associated microbiota. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2020; 92:1629-1648. [PMID: 33463854 DOI: 10.1002/wer.1410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 07/13/2020] [Accepted: 07/14/2020] [Indexed: 06/12/2023]
Abstract
Highlights of new, interesting, and emerging research findings on substratum-associated microbiota covered from a survey of 2019 literature from primarily freshwaters provide insight into research trends of interest to the Water Environment Federation and others interested in benthic, aquatic environments. Coverage of topics on bottom-associated or attached algae and cyanobacteria, though not comprehensive, includes new methods, taxa new-to-science, nutrient dynamics, auto- and heterotrophic interactions, grazers, bioassessment, herbicides and other pollutants, metal contaminants, and nuisance, and bloom-forming and harmful algae. Coverage of bacteria, also not comprehensive, focuses on the ecology of benthic biofilms and microbial communities, along with the ecology of microbes like Caulobacter crescentus, Rhodobacter, and other freshwater microbial species. Bacterial topics covered also include metagenomics and metatranscriptomics, toxins and pollutants, bacterial pathogens and bacteriophages, and bacterial physiology. Readers may use this literature review to learn about or renew their interest in the recent advances and discoveries regarding substratum-associated microbiota. PRACTITIONER POINTS: This review of literature from 2019 on substratum-associated microbiota presents highlights of findings on algae, cyanobacteria, and bacteria from primarily freshwaters. Coverage of algae and cyanobacteria includes findings on new methods, taxa new to science, nutrient dynamics, auto- and heterotrophic interactions, grazers, bioassessment, herbicides and other pollutants, metal contaminants, and nuisance, bloom-forming and harmful algae. Coverage of bacteria includes findings on ecology of benthic biofilms and microbial communities, the ecology of microbes, metagenomics and metatranscriptomics, toxins and pollutants, bacterial pathogens and bacteriophages, and bacterial physiology. Highlights of new, noteworthy and emerging topics build on those from 2018 and will be of relevance to the Water Environment Federation and others interested in benthic, aquatic environments.
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Affiliation(s)
- Paula C Furey
- Department Biology, St. Catherine University, St. Paul, Minnesota, USA
| | - Sylvia S Lee
- Office of Research and Development, U.S. Environmental Protection Agency, Washington, District of Columbia, USA
| | - Daniel L Clemans
- Department of Biology, Eastern Michigan University, Ypsilanti, Michigan, USA
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17
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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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18
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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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19
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Saraf A, Suradkar A, Dawda HG, Gaysina LA, Gabidullin Y, Kumat A, Behere I, Kotulkar M, Batule P, Singh P. Phylogenetic complexities of the members of Rivulariaceae with the re-creation of the family Calotrichaceae and description of Dulcicalothrix necridiiformans gen nov., sp nov., and reclassification of Calothrix desertica. FEMS Microbiol Lett 2019; 366:5601706. [DOI: 10.1093/femsle/fnz219] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 10/18/2019] [Indexed: 12/26/2022] Open
Abstract
ABSTRACT
A freshwater dwelling, tapering, heterocytous cyanobacterium (strain V13) was isolated from an oligotrophic pond in the Shrirampur taluka, Ahmednagar district of Maharashtra in India. Initial morphological examination indicated that strain V13 belonged to the genus Calothrix. Subsequent molecular and phylogenetic assessment based on 16S rRNA gene, led us to describe the freshwater/terrestrial clade of Calothrix strains without terminal hairs as a new genus Dulcicalothrix gen. nov., with the type species Dulcicalothrix necridiiformans sp. nov. (Strain V13) on the basis of the necridia forming ability of the strain. Also, the 16S-23S ITS secondary structure analysis clearly differentiated strain V13 from the other members of the clade. Past studies and the current state of knowledge makes it imperative to separate the groups Calothrix (marine/freshwater Calothrix), Macrochaete and Dulcicalothrix (freshwater/terrestrial Calothrix) into separate genera in accordance with the International Code of Nomenclature for Algae, Fungi and Plants. Robust phylogenetic evidence and previous reports strongly support the re-erection of the family Calotrichaceae distinct from the existing family Rivulariaceae.
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Affiliation(s)
- Aniket Saraf
- Department of Biological Science, Ramniranjan Jhunjhunwala College, Station Road, Ghatkopar, Mumbai 400086, India
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pashan-Sus Road, Pune 411021,India
| | - Archana Suradkar
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pashan-Sus Road, Pune 411021,India
| | - Himanshu G Dawda
- Department of Biological Science, Ramniranjan Jhunjhunwala College, Station Road, Ghatkopar, Mumbai 400086, India
| | - Lira A Gaysina
- Department of Bioecology and Biological Education, M. Akmullah Bashkir State Pedagogical University, Oktyabr'skoy revolyutsii, 3A, Ufa 450000, Russia
| | - Yunir Gabidullin
- Department of Information Systems and Technologies, M. Akmullah Bashkir State Pedagogical University, Oktyabr'skoy revolyutsii, 3A, Ufa 450000, Russia
| | - Ankita Kumat
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pashan-Sus Road, Pune 411021,India
| | - Isha Behere
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pashan-Sus Road, Pune 411021,India
| | - Manasi Kotulkar
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pashan-Sus Road, Pune 411021,India
| | - Priyanka Batule
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pashan-Sus Road, Pune 411021,India
| | - Prashant Singh
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pashan-Sus Road, Pune 411021,India
- Department of Botany, Institute of Science, Banaras Hindu University, BHU Road, Varanasi 221005, India
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