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Usman M, Khan AZ, Malik S, Xiong W, Lv Y, Zhang S, Zhao A, Solovchenko AE, Alam MA, Alessa AH, Mehmood MA, Xu J. A novel integrated approach employing Desertifilum tharense BERC-3 for efficient wastewater valorization and recycling for developing peri-urban algae farming system. CHEMOSPHERE 2024; 361:142527. [PMID: 38838866 DOI: 10.1016/j.chemosphere.2024.142527] [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: 04/03/2024] [Revised: 05/18/2024] [Accepted: 06/02/2024] [Indexed: 06/07/2024]
Abstract
Peri-urban environments are significant reservoirs of wastewater, and releasing this untreated wastewater from these resources poses severe environmental and ecological threats. Wastewater mitigation through sustainable approaches is an emerging area of interest. Algae offers a promising strategy for carbon-neutral valorization and recycling of urban wastewater. Aiming to provide a proof-of-concept for complete valorization and recycling of urban wastewater in a peri-urban environment in a closed loop system, a newly isolated biocrust-forming cyanobacterium Desertifilum tharense BERC-3 was evaluated. Here, the highest growth and lipids productivity were achieved in urban wastewater compared to BG11 and synthetic wastewater. D. tharense BERC-3 showed 60-95% resource recovery efficiency and decreased total dissolved solids, chemical oxygen demand, biological oxygen demand, nitrate nitrogen, ammonia nitrogen and total phosphorus contents of the water by 60.37%, 81.11%, 82.75%, 87.91%, 85.13%, 85.41%, 95.87%, respectively, making it fit for agriculture as per WHO's safety limits. Soil supplementation with 2% wastewater-cultivated algae as a soil amender, along with its irrigation with post-treated wastewater, improved the nitrogen content and microbial activity of the soil by 0.3-2.0-fold and 0.5-fold, respectively. Besides, the availability of phosphorus was also improved by 1.66-fold. The complete bioprocessing pipeline offered a complete biomass utilization. This study demonstrated the first proof-of-concept of integrating resource recovery and resource recycling using cyanobacteria to develop a peri-urban algae farming system. This can lead to establishing wastewater-driven algae cultivation systems as novel enterprises for rural migrants moving to urban areas.
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Affiliation(s)
- Muhammad Usman
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Aqib Zafar Khan
- Guangdong Provincial Key Laboratory for Plant Epigenetics, Guangdong Engineering Research Centre for Marine Algal Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
| | - Sana Malik
- Climate Change Cluster, University of Technology Sydney, Ultimo, NSW 2007, Australia
| | - Wenlong Xiong
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Yongkun Lv
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Shen Zhang
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Anqi Zhao
- School of Life Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - A E Solovchenko
- Faculty of Biology, Lomonosov Moscow State University, Moscow GSP-1 119234, Russia
| | - Md Asraful Alam
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Abdulrahman H Alessa
- Department of Biology, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia
| | - Muhammad Aamer Mehmood
- Bioenergy Research Center, Department of Bioinformatics and Biotechnology, Government College University Faisalabad, Faisalabad 38000, Pakistan.
| | - Jingliang Xu
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China.
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2
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Joseph J, Ray JG. A critical review of soil algae as a crucial soil biological component of high ecological and economic significance. JOURNAL OF PHYCOLOGY 2024; 60:229-253. [PMID: 38502571 DOI: 10.1111/jpy.13444] [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: 05/17/2023] [Revised: 11/14/2023] [Accepted: 01/08/2024] [Indexed: 03/21/2024]
Abstract
Aero-terrestrial algae are ecologically and economically valuable bioresources contributing to carbon sequestration, sustenance of soil health, and fertility. Compared to aquatic algae, the literature on subaerial algae is minimal, including studies of distinctive habitats such as forest soils, agricultural fields, deserts, polar regions, specific subaerial zones, artificial structures, and tropical soils. The primary goal here was to identify the gaps and scope of research on such algae. Accordingly, the literature was analyzed per sub-themes, such as the "nature of current research data on terrestrial algae," "methodological approaches," "diversity," "environmental relationships," "ecological roles," and "economic significance." The review showed there is a high diversity of algae in soils, especially members belonging to the Cyanophyta (Cyanobacteria) and Chlorophyta. Algal distributions in terrestrial environments depend on the microhabitat conditions, and many species of soil algae are sensitive to specific soil conditions. The ecological significance of soil algae includes primary production, the release of biochemical stimulants and plant growth promoters into soils, nitrogen fixation, solubilization of minerals, and the enhancement and maintenance of soil fertility. Since aero-terrestrial habitats are generally stressed environments, algae of such environments can be rich in rare metabolites and natural products. For example, epilithic soil algae use wet adhesive molecules to fix them firmly on the substratum. Exploring the ecological roles and economic utility of soil and other subaerial algae could be helpful for the development of algae-based industries and for achieving sustainable soil management.
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Affiliation(s)
- Jebin Joseph
- Department of Botany, St Berchmans College, Changanacherry, Kerala, India
- Laboratory of Ecology and Plant Science, School of Biosciences, Mahatma Gandhi University, Kottayam, Kerala, India
| | - Joseph George Ray
- School of Biosciences, Mahatma Gandhi University, Kottayam, Kerala, India
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3
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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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Maltseva S, Kezlya E, Krivova Z, Gusev E, Kulikovskiy M, Maltsev Y. Phylogeny and fatty acid profiles of Aliinostoc vietnamicum sp. nov. (cyanobacteria) from the soils of Vietnam. JOURNAL OF PHYCOLOGY 2022; 58:789-803. [PMID: 36054495 DOI: 10.1111/jpy.13283] [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: 04/11/2022] [Accepted: 07/27/2022] [Indexed: 06/15/2023]
Abstract
A new cyanobacterial species of Aliinostoc, A. vietnamicum sp. nov., is recorded in the tropical forest soil from the Cát Tiên National Park, Vietnam. The analysis is based on morphological characters, 16S rDNA phylogeny, ITS secondary structure, and fatty acid composition analysis. Aliinostoc vietnamicum differed from the other species of the genus by the size and shape of vegetative cells, size of akinetes and heterocytes, and presence of granular polyphosphate inclusions in vegetative cells. The evolutionary distance matrix based on the 16S rRNA gene shared 96.2-98.2% similarities with other Aliinostoc sequences. The phylogeny inferred by maximum likelihood and Bayesian inference placed A. vietnamicum in the Aliinostoc clade, within the Nostocaceae. For the first time, fatty acid composition analysis was obtained for a member of the genus Aliinostoc with cultivation time experiments. α-linolenic (27.54-37.75%), palmitic (13.87-22.65%), and stearic (10.08-20.27%) acids were the dominant fatty acids when cultured during the exponential growth phase, as well as during stationary. This is the first finding of a strain with such a high content of stearic acid among cyanobacteria with Nostoc-like morphology.
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Affiliation(s)
- Svetlana Maltseva
- К.А. Timiryazev Institute of Plant Physiology RAS, IPP RAS, Moscow, 127276, Russia
| | - Elena Kezlya
- К.А. Timiryazev Institute of Plant Physiology RAS, IPP RAS, Moscow, 127276, Russia
| | - Zinaida Krivova
- К.А. Timiryazev Institute of Plant Physiology RAS, IPP RAS, Moscow, 127276, Russia
| | - Evgeniy Gusev
- К.А. Timiryazev Institute of Plant Physiology RAS, IPP RAS, Moscow, 127276, Russia
- Joint Russian-Vietnamese Tropical Research and Technological Centre, 63 Nguyen Van Huyen, Nghia Do, Cau Giay, Hanoi, Vietnam
| | - Maxim Kulikovskiy
- К.А. Timiryazev Institute of Plant Physiology RAS, IPP RAS, Moscow, 127276, Russia
| | - Yevhen Maltsev
- К.А. Timiryazev Institute of Plant Physiology RAS, IPP RAS, Moscow, 127276, Russia
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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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Ngo TT, Nguyen BLT, Duong TA, Nguyen THT, Nguyen TL, Kieu KT, Do MHT, Nguyen SV, Thang ND, Pham HTL. Polyphasic evaluation and cytotoxic investigation of isolated cyanobacteria with an emphasis on potent activities of a Scytonema strain. Front Microbiol 2022; 13:1025755. [DOI: 10.3389/fmicb.2022.1025755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 09/21/2022] [Indexed: 11/13/2022] Open
Abstract
Cyanobacteria are phototrophic organisms widely found in most types of natural habitats in the tropical regions of the world. In this study, we isolated and identified cyanobacterial strains from paddy soil in Hanoi (Vietnam) and investigated their cytotoxic activities. Five isolated cyanobacterial strains showed distinctive profiles of gene sequences (rRNA 16S and rbcL), phylogenetic placements, and morphological characteristics. Based on the polyphasic evaluation, they were classified as Scytonema bilaspurense NK13, Hapalosiphon welwitschii MD2411, Aulosira sp. XN1103, Desikacharya sp. NS2000, and Desmonostoc sp. NK1813. The cytotoxic screening revealed that the extract of strain Scytonema bilaspurense NK13 exhibited potent cytotoxic activities against four human cell lines of HeLa cells, OVCAR-8 cells, HaCaT cells, and HEK-293T cells, with IC50 values of 3.8, 34.2, 21.6, and 0.6 μg/mL, respectively. This is the first time a well-classified Scytonema strain from tropical habitat in Southeast Asia has been recognized as a potential producer of cytotoxic compounds.
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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: 6] [Impact Index Per Article: 3.0] [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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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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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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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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Sommer V, Mikhailyuk T, Glaser K, Karsten U. Uncovering Unique Green Algae and Cyanobacteria Isolated from Biocrusts in Highly Saline Potash Tailing Pile Habitats, Using an Integrative Approach. Microorganisms 2020; 8:E1667. [PMID: 33121104 PMCID: PMC7692164 DOI: 10.3390/microorganisms8111667] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 10/22/2020] [Accepted: 10/22/2020] [Indexed: 02/01/2023] Open
Abstract
Potash tailing piles caused by fertilizer production shape their surroundings because of the associated salt impact. A previous study in these environments addressed the functional community "biocrust" comprising various micro- and macro-organisms inhabiting the soil surface. In that previous study, biocrust microalgae and cyanobacteria were isolated and morphologically identified amongst an ecological discussion. However, morphological species identification maybe is difficult because of phenotypic plasticity, which might lead to misidentifications. The present study revisited the earlier species list using an integrative approach, including molecular methods. Seventy-six strains were sequenced using the markers small subunit (SSU) rRNA gene and internal transcribed spacer (ITS). Phylogenetic analyses confirmed some morphologically identified species. However, several other strains could only be identified at the genus level. This indicates a high proportion of possibly unknown taxa, underlined by the low congruence of the previous morphological identifications to our results. In general, the integrative approach resulted in more precise species identifications and should be considered as an extension of the previous morphological species list. The majority of taxa found were common in saline habitats, whereas some were more likely to occur in nonsaline environments. Consequently, biocrusts in saline environments of potash tailing piles contain unique microalgae and cyanobacteria that will possibly reveal several new taxa in more detailed future studies and, hence, provide new data on the biodiversity, as well as new candidates for applied research.
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Affiliation(s)
- Veronika Sommer
- Institute for Biological Sciences, Applied Ecology and Phycology, University of Rostock, 18059 Rostock, Germany; (V.S.); (K.G.)
- upi UmweltProjekt Ingenieursgesellschaft mbH, 39576 Stendal, Germany
| | - Tatiana Mikhailyuk
- National Academy of Sciences of Ukraine, M.G. Kholodny Institute of Botany, 01601 Kyiv, Ukraine;
| | - Karin Glaser
- Institute for Biological Sciences, Applied Ecology and Phycology, University of Rostock, 18059 Rostock, Germany; (V.S.); (K.G.)
| | - Ulf Karsten
- Institute for Biological Sciences, Applied Ecology and Phycology, University of Rostock, 18059 Rostock, Germany; (V.S.); (K.G.)
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