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Journal articles on the topic 'Nostoc'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Oksanen, Ilona, Jouni Jokela, David P. Fewer, Matti Wahlsten, Jouko Rikkinen, and Kaarina Sivonen. "Discovery of Rare and Highly Toxic Microcystins from Lichen-Associated Cyanobacterium Nostoc sp. Strain IO-102-I." Applied and Environmental Microbiology 70, no. 10 (2004): 5756–63. http://dx.doi.org/10.1128/aem.70.10.5756-5763.2004.

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ABSTRACT The production of hepatotoxic cyclic heptapeptides, microcystins, is almost exclusively reported from planktonic cyanobacteria. Here we show that a terrestrial cyanobacterium Nostoc sp. strain IO-102-I isolated from a lichen association produces six different microcystins. Microcystins were identified with liquid chromatography-UV mass spectrometry by their retention times, UV spectra, mass fragmentation, and comparison to microcystins from the aquatic Nostoc sp. strain 152. The dominant microcystin produced by Nostoc sp. strain IO-102-I was the highly toxic [ADMAdda5]microcystin-LR,

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Scherzinger, Daniel, Sandra Ruch, Daniel P. Kloer, Annegret Wilde, and Salim Al-Babili. "Retinal is formed from apo-carotenoids in Nostoc sp. PCC7120: in vitro characterization of an apo-carotenoid oxygenase." Biochemical Journal 398, no. 3 (2006): 361–69. http://dx.doi.org/10.1042/bj20060592.

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The sensory rhodopsin from Anabaena (Nostoc) sp. PCC7120 is the first cyanobacterial retinylidene protein identified. Here, we report on NosACO (Nostoc apo-carotenoid oxygenase), encoded by the ORF (open reading frame) all4284, as the candidate responsible for the formation of the required chromophore, retinal. In contrast with the enzymes from animals, NosACO converts β-apo-carotenals instead of β-carotene into retinal in vitro. The identity of the enzymatic products was proven by HPLC and gas chromatography–MS. NosACO exhibits a wide substrate specificity with respect to chain lengths and fu

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3

Najah, Aminatun, and Indah Wahyuni Abida. "Abundance and Biomass Analysis of Nostoc commune in Rice Field Habitat in Madura." Symposium on Biology Education (Symbion) 3 (July 29, 2023): 66. http://dx.doi.org/10.26555/symbion.11694.

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Nostoc commune is often found in terrestrial habitats as well as aquatic habitats. Nostoc commune has the ability to fix nitrogen from the atmosphere, besides being used as food or medicine. Nostoc commune in Indonesia is still little utilized, this is because its existence is often misinterpreted as a weed in rice fields. The purpose of this study was to determine the abundance and biomass of Nostoc commune in rice field habitats. This research was conducted from 5 September 2022- September 23, 2022. The sampling method of Nostoc commune and water used was purposive sampling in the rice field

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Singh, Prashant, Jana Šnokhousová, Aniket Saraf, Archana Suradkar, and Josef Elster. "Phylogenetic evaluation of the genus Nostoc and description of Nostoc neudorfense sp. nov., from the Czech Republic." International Journal of Systematic and Evolutionary Microbiology 70, no. 4 (2020): 2740–49. http://dx.doi.org/10.1099/ijsem.0.004102.

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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

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Aboal, Marina, José Carlos Cristóbal, and José Pedro Marín-Murcia. "Sobre la presencia de Nostoc commune var. flagelliforme (Nostocaceae, Cyanophyceae) en suelos arcillosos de regiones áridas del sureste español." Acta Botanica Malacitana 35 (December 1, 2010): 156–61. http://dx.doi.org/10.24310/abm.v35i0.6955.

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About the presence of Nostoc commune var. flagelliforme (Nostocaceae, Cyanophyceae) on clay soils from arid regions of south east SpainPalabras clave. Cyanophyceae, Nostoc, distribución, ecología, morfología, regiones áridas, SE España.Keywords. Cyanophyceae, Nostoc, distribution, ecology, morphology, arid regions, Southeastern Spain.

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Aboal, Marina, José Carlos Cristóbal, and José Pedro Marín-Murcia. "Sobre la presencia de Nostoc commune var. flagelliforme (Nostocaceae, Cyanophyceae) en suelos arcillosos de regiones áridas del sureste español. About the presence of Nostoc commune var. flagelliforme (Nostocaceae, Cyanophyceae) on clay soils from arid regions of south east Spain." Acta Botanica Malacitana 35 (December 1, 2010): 156–61. http://dx.doi.org/10.24310/abm.v35i0.2859.

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About the presence of Nostoc commune var. ﬂ agelliforme (Nostocaceae, Cyanophyceae) on clay soils from arid regions of south east Spain Palabras clave. Cyanophyceae,Nostoc, distribución, ecología, morfología, regiones áridas, SE España. Keywords.Cyanophyceae, Nostoc, distribution, ecology, morphology, arid regions, Southeastern Spain.

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7

Parambil, Farhad Vayadi, and Akkara Yusuf. "Diversity of Epilithic Nostoc spp. from Western Ghats Regions of Kerala, India." International Journal on Algae 25, no. 1 (2023): 43–70. http://dx.doi.org/10.1615/interjalgae.v25.i1.40.

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Western ghats (Biodiversity hotspot) of Kerala is abundant in cyanobacterial species diversity. The cyanobacterial genus <i>Nostoc</i> inhabits on natural rock surfaces, thus play an important role in terrestrial ecosystems by colonizing in new and unsettled ecological niches. The abiotic factors like temperature, pH, humidity, micro and macro nutrients contribute to the abundance of <i>Nostoc </i>spp. on the rock surface. <i>Nostoc</i> spp. act as a potential candidates for eco-friendly and sustainable agriculture. Even though, their substantial importance

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8

Boissière, Jean-Claude, Marie-Claude Boissière, Patrick Champion-Arnaud, Richard Lallemant, and Jean Wagner. "Le cycle des Nostoc des genres Peltigera et Collema en cultures in vitro et dans le thalle lichénique." Canadian Journal of Botany 65, no. 7 (1987): 1468–77. http://dx.doi.org/10.1139/b87-203.

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The isolation and culture of Nostoc symbionts of four Peltigera and of Collema tenax has revealed the presence of a biological cycle. Our observations, taken in conjunction with those of other authors on free-living species, suggest that the photosymbiont of Peltigera canina, P. rufescens, P. horizontalis, and P. spuria is Nostoc punctiforme (Kütz.) Hariot, that of Collema tenax is Nostoc commune Vauch. In the lichen thallus, Nostoc is at the stage called "punctiforme." This stage stays stable as long as the thallus is undamaged. If wounding occurs, the opening of the polysaccharide sheath of

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9

Rusydi, Rachmawati, Rachmawati Rusydi, Amararatne Yakupitiyage, Wenresti G. Gallardo, Lionel Dabbadie, and Anil K. Anal. "POTENTIAL OF NOSTOC MUSCORUM CULTURED IN BG-II MEDIUM AS BIODIESEL FEEDSTOCK SOURCE: EVALUATION OF NUTRIENT REQUIREMENT FOR CULTURE AND ITS DAILY LIPID CONTENT." KnE Life Sciences 2, no. 1 (2015): 103. http://dx.doi.org/10.18502/kls.v1i0.93.

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Increment of industrial development and energy demands for transportation and electricity have increased diesel-fuel uses to fulfil global energy needs. Carbon emission as impact of high fossil diesel use which pollutes the air gradually increases green house gases (GHG) and increases the intensity of acid rains. Furthermore, scarcity of fossil-fuels resources has caused high price of diesel-fuel which in turn to have increased the prices of all commodities. Nostoc muscorum is filamentous Cyanobacteria species which lives both terrestrial and freshwater aquatic environment. This strain has goo

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Ambat, Kristin Natalia, Indah Wahyuni Abida, and Moh Ismail. "Proximate Content of Nostoc commune in Gilianyar Rice Field Habitat, Bangkalan Regency, East Java." Symposium on Biology Education (Symbion) 3 (August 30, 2023): 108. http://dx.doi.org/10.26555/symbion.11700.

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Nostoc commune become one of the microalgae that can be found in Indonesia. Nostoc commune is an edible blue-green microalgae that has been used as a delicacy or herbal medicine in various countries. Nostoc commune contains high concentrations of carbohydrates, crude protein, and micronutrients. The purpose of this research is to know the proximate content of Nostoc commune in the rice field habitat of Gilianyar, Bangkalan Regency, East Java. The method used in this study includes 2 steps, namely direct observation (on site) and observations in the laboratory. Direct observation was carried ou

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11

Zimmerman, William J., and Barry H. Rosen. "Cyanobiont diversity within and among cycads of one field site." Canadian Journal of Microbiology 38, no. 12 (1992): 1324–28. http://dx.doi.org/10.1139/m92-218.

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Limited diversity was found among cyanobionts from a cultivated population of cycads at a field site in Florida. All isolates were classified as Nostoc but were different from the one Nostoc species found in the soil. These cyanobacteria were root endophytes of several plants of Zamia integrifolia and one of Dioon. The isolates were similar morphologically and in their reactions to four fluorescein isothiocyanate conjugated lectins. Electrophoretic protein profiles and zymograms distinguished one cyanobiont and the soil Nostoc. A tenacious Anabaena epiphyte was also discovered inhabiting the s

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Rosales Loaiza, Néstor, Patricia Vera, Cateryna Aiello-Mazzarri, and Ever Morales. "COMPARATIVE GROWTH AND BIOCHEMICAL COMPOSITION OF FOUR STRAINS OF Nostoc AND Anabaena (CYANOBACTERIA, NOSTOCALES) IN RELATION TO SODIUM NITRATE." Acta Biológica Colombiana 21, no. 2 (2016): 347–54. http://dx.doi.org/10.15446/abc.v21n2.48883.

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<p>Nitrogen concentration is an essential parameter in cyanobacterial cultures to produce enriched biomass with agricultural purposes. Growth and biochemical composition of Nostoc LAUN0015,Nostoc UAM206, Anabaena sp.1 and Anabaena sp.2 was compared at 0, 4.25, 8.5 and 17 mM NaNO3. Cultures under laboratory conditions were maintained for 30 days at a volume of 500 mL. Anabaenasp.1 yielded the highest value of dry mass of 0.26 ± 2.49 mg mL-1 at 8.5 mM NaNO3. For chlorophyll, phycocyanin and phycoerythrin were achieved maximum values at 17 mM NaNO3 with 18.09 ± 1.74, 102.90 ± 6.73 and 53.47

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13

Jackson, Owen, Oliver Taylor, David G. Adams, and J. Paul Knox. "Arabinogalactan Proteins Occur in the Free-Living Cyanobacterium Genus Nostoc and in Plant–Nostoc Symbioses." Molecular Plant-Microbe Interactions® 25, no. 10 (2012): 1338–49. http://dx.doi.org/10.1094/mpmi-04-12-0095-r.

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Arabinogalactan proteins (AGP) are a diverse family of proteoglycans associated with the cell surfaces of plants. AGP have been implicated in a wide variety of plant cell processes, including signaling in symbioses. This study investigates the existence of putative AGP in free-living cyanobacterial cultures of the nitrogen-fixing, filamentous cyanobacteria Nostoc punctiforme and Nostoc sp. strain LBG1 and at the symbiotic interface in the symbioses between Nostoc spp. and two host plants, the angiosperm Gunnera manicata (in which the cyanobacterium is intracellular) and the liverwort Blasia pu

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14

Jüriado, Inga, Ulla Kaasalainen, Jaan Liira, and Jouko Rikkinen. "Peltigera (Ascomycota) living in open and shady environments depend on different Nostoc photobionts." Folia Cryptogamica Estonica 60 (November 1, 2023): 75–99. http://dx.doi.org/10.12697/fce.2023.60.10.

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   Species of Peltigera (lichen-forming Ascomycota) establish obligate symbioses with several monophyletic groups (phylogroups) of Nostoc cyanobacteria. Some of these fungi are strict specialists and only associate with one Nostoc phylogroup throughout their range, while others are generalists and associate with many different Nostoc phylogroups. We sampled 20 Peltigera taxa, mostly representing the Peltigera section Peltigera, from grassland and forest habitats across Europe. Mycobionts’ identities were confirmed using fungal ITS sequences. The Nostoc cyanobionts were identi

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15

Fuchs, Birgit, Petra Suttner, Sabine Sterner, Robert Wastlhuber, and Eckhard Loos. "Disproportionating Transglycosylase (D-Enzyme) in Green Algae and Cyanobacteria. Partial Purification and Characterization." Zeitschrift für Naturforschung C 49, no. 3-4 (1994): 163–70. http://dx.doi.org/10.1515/znc-1994-3-402.

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D-Enzyme (4-a-glucanotransferase, EC 2.4.1.25) from cultured symbiotic Nostoc and Chlorella has been partially purified and characterized. The enzyme catalyzes the disproportionation of maltooligosaccharides and is able to form maltooligosaccharides from soluble starch and D-glucose. The properties of D-enzyme from Nostoc and Chlorella are similar with respect to substrate specificity, KM values and pH dependence, but differ with respect to temperature optimum and molecular weight (40 °C/50 kDa and 50 °C/230 kDa for the enzyme from Nostoc and Chlorella, respectively). D-enzyme activity has bee

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Guo, Jin Ying, Ming Ke Shi, Guo Yan Ren, Yong Yin, and Shi Ru Jia. "Response of Nostoc flagelliforme cell to Hyperthermia Stress." Advanced Materials Research 518-523 (May 2012): 614–18. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.614.

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The effects of hyperthermia stress was studied in a terrestrial, drought-tolerant alga, Nostoc flagelliforme. The BG11 culture medium were used to culture Nostoc flagelliforme cell at different temperature conditions: 25°C, 35°C,45°Cand 55°C. The physiological and biochemical character of Nostoc flagelliforme cell, such as electrolyte leakage, the activities of superoxide dismutase(SOD), the content of malondialdehyde(MDA), proline(Pro), soluble protein and trehalose were tested after 8h, 12h, 16h and 24h treatment under 40μmol/m2/s. The results showed that: electrolyte leakage and malondialde

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17

Journal, Baghdad Science. "Effect of Cyanobacteria Isolates on Rice Seeds Germination in Saline Soil." Baghdad Science Journal 15, no. 1 (2018): 16–21. http://dx.doi.org/10.21123/bsj.15.1.16-21.

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Cyanobacteria are prokaryotic photosynthetic communities which are used in biofertilization of many plants especially rice plant. Cyanobacteria play a vital role to increase the plant's ability for salinity tolerance. Salinity is a worldwide problem which affects the growth and productivity of crops. In this work three cyanobacteria strains (Nostoc calcicola, Anabaena variabilis, and Nostoc linkia) were isolated from saline soil at Kafr El-Sheikh Governorate; North Egypt. The propagated cyanobacteria strains were used to withstand salinity of the soil and increase rice plant growth (Giza 178).

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Bachura, Yuliya M., and Nikolay M. Daineko. "On the use of complexes of microalgae and cyanobacteria as stimulators of the growth of cucumbers." Issues of modern algology (Вопросы современной альгологии), no. 1(25) (2021): 98–104. http://dx.doi.org/10.33624/2311-0147-2021-1(25)-98-104.

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The results of a laboratory experiment to study the influence of the microalgae Eustigmatos magnus (Ochrophyta) and cyanobacteria Nostoc sp. (Cyanobacteria) and their complexes for the growth and development of cucumber seedlings are presented. It was found that the original and diluted cultures of these photosynthetic microorganisms and their complexes have a stimulating effect both on the length and on the weight of cucumber seedlings. In the experiment with the initial cultures of algae and cyanobacteria, the maximum average length of shoots in the variant of the experiment with the Nostoc–

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Smith, Mary. "Tremella? No, Nostoc." Field Mycology 1, no. 4 (2000): 131–32. http://dx.doi.org/10.1016/s1468-1641(10)60067-9.

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Wastlhuber, Robert, and Eckhard Loos. "Differences Between Cultured and Freshly Isolated Cyanobiont from Peltigera—Is there Symbiosis-Specific Regulation Of a Glucose Carrier?" Lichenologist 28, no. 1 (1996): 67–78. http://dx.doi.org/10.1006/lich.1996.0006.

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AbstractThe cyanobiont (Nostoc) of the lichen Peltigera horizontalis was isolated using a procedure of repeated grinding, differential centrifugation and partitioning in an aqueous two-phase system of dextran/polyethylene glycol. A yield of 22% was calculated on the basis of chlorophyll recovery from the thallus. Freshly isolated Nostoc differed little from that kept in prolonged culture with respect to the relative activities of a number of enzymes of carbohydrate metabolism in the soluble fraction. However, much higher specific activities of the disproportionating transglycosylase and starch

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Kurahashi, Midori, and Angelica Naka. "Edible Terrestrial Cyanobacteria for Food Security in the Context of Climate Change: A Comprehensive Review." Applied Biosciences 4, no. 2 (2025): 26. https://doi.org/10.3390/applbiosci4020026.

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This review examines the history of consumption, life cycle, and culture conditions of seven edible mucilaginous terrestrial cyanobacterial strains—Nostoc flagelliforme, Nostoc commune, Nostoc sphaeroides, Nostoc sphaericum, Nostoc verrucosum, Aphanothece sacrum, and Nostochopsis lobatus—as resilient and sustainable food sources in the face of climate change. Traditionally consumed across various cultures and known for their resilience in extreme environments, these cyanobacteria offer high nutritional value, including proteins, vitamins, and essential fatty acids, making them promising candid

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Rojas Felipe, Edwin, Víctor Guillermo Sánchez Araujo, Lizangela Aurelia Hinojosa Yzarra, Fredy Rivera Trucios, and Jorge Washington Rodríguez Deza. "Capacidad biosortiva del Nostoc commune en la separación del plomo de aguas contaminadas." Revista Alfa 7, no. 19 (2023): 37–44. http://dx.doi.org/10.33996/revistaalfa.v7i19.195.

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La contaminación del agua por presencia de metales pesados como el plomo, es un problema mundial que ha desequilibrado el sistema de salud en la humanidad, toda vez que este metal afecta la pureza del agua bebible, poniendo en peligro la sobrevivencia de los seres vivos, ya que el plomo afecta los sistemas nervioso, hematológico, cardiovascular y reproductivo; frente a ello, la biosorción, se presenta como un efectivo método alternativo, motivo por el cual el presente estudio tiene el objetivo de dar una visión general y actualizada sobre la capacidad biosortiva del Nostoc commune en la elimin

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Genuário, Diego Bonaldo, Marcelo Gomes Marçal Vieira Vaz, Guilherme Scotta Hentschke, Célia Leite Sant’Anna, and Marli Fátima Fiore. "Halotia gen. nov., a phylogenetically and physiologically coherent cyanobacterial genus isolated from marine coastal environments." International Journal of Systematic and Evolutionary Microbiology 65, Pt_2 (2015): 663–75. http://dx.doi.org/10.1099/ijs.0.070078-0.

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Nostoc is a common and well-studied genus of cyanobacteria and, according to molecular phylogeny, is a polyphyletic group. Therefore, revisions of this genus are urged in an attempt to clarify its taxonomy. Novel strains isolated from underexplored environments and assigned morphologically to the genus Nostoc are not genetically related to the ‘true Nostoc’ group. In this study, four strains isolated from biofilms collected in Antarctica and five strains originated from Brazilian mangroves were evaluated. Despite their morphological similarities to other morphotypes of Nostoc , these nine stra

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Kaleem, Muhammad, Lubna Anjum Minhas, Muhammad Zafar Hashmi, et al. "Biosorption of Cadmium and Lead by Dry Biomass of Nostoc sp. MK-11: Kinetic and Isotherm Study." Molecules 28, no. 5 (2023): 2292. http://dx.doi.org/10.3390/molecules28052292.

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Cadmium (Cd) and lead (Pb) are global environmental pollutants. In this study, Nostoc sp. MK-11 was used as an environmentally safe, economical, and efficient biosorbent for the removal of Cd and Pb ions from synthetic aqueous solutions. Nostoc sp. MK-11 was identified on a morphological and molecular basis using light microscopic, 16S rRNA sequences and phylogenetic analysis. Batch experiments were performed to determine the most significant factors for the removal of Cd and Pb ions from the synthetic aqueous solutions using dry Nostoc sp. MK1 biomass. The results indicated that the maximum b

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TACHIBANA, SATORU. "A new species, Cricotopus cataractaenostocicola, living in a cyanobacterial colony on vertical rocky substrates with trickling water film in Japan (Diptera: Chironomidae)." Zootaxa 5178, no. 3 (2022): 241–55. http://dx.doi.org/10.11646/zootaxa.5178.3.3.

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Trickling water on nearly vertical rocky substrates is a common feature of mountainous regions of Japan. The thin water film is inhabited by discoid colonies of the cyanobacteria Nostoc. This species resembles the North American Nostoc parmelioides Kützing, which forms ear-like colonies in stream beds and is inhabited by symbiotic chironomid larvae. The Nostoc colony in Japan was inhabited by a chironomid larva inside a ring-shaped burrow in the colony. Morphological analyses suggested that these individuals belong to a new species closely related to Cricotopus spp. symbiotic with Nostoc parme

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Huo, Da, Hua Li, Fangfang Cai, et al. "Genome Evolution of Filamentous Cyanobacterium Nostoc Species: From Facultative Symbiosis to Free Living." Microorganisms 9, no. 10 (2021): 2015. http://dx.doi.org/10.3390/microorganisms9102015.

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In contrast to obligate bacteria, facultative symbiotic bacteria are mainly characterized by genome enlargement. However, the underlying relationship of this feature with adaptations to various habitats remains unclear. In this study, we used the global genome data of Nostoc strains, including 10 novel genomes sequenced in this study and 26 genomes available from public databases, and analyzed their evolutionary history. The evolutionary boundary of the real clade of Nostoc species was identified and was found to be consistent with the results of polyphasic taxonomy. The initial ancestral spec

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Chuquilín Goicochea, Roberto Carlos, and Dyana Daysi Rosales Laguna. "ESTUDIO DE LA BIOSORCIÓN DE Cd (II) Y Pb (II) USANDO COMO ADSORBENTE Nostoc sphaericum Vaucher." Revista de la Sociedad Química del Perú 82, no. 1 (2016): 49–60. http://dx.doi.org/10.37761/rsqp.v82i1.51.

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Se evaluó la capacidad de biosorción del Nostoc sphaericum Vaucher en sistema por lotes. Las condiciones fueron: concentración de metal entre 40 y 240 ppm, pH de 2 a 5; 0,13 g de nostoc seco por 50 mL de solución, a 25 °C y en agitación. Las concentraciones de Cd (II) y Pb (II) se determinaron por Espectroscopía de Absorción Atómica. El modelo de isoterma de Langmuir se ajustó para Pb (II) (R2=99,97%, p > 0,00), con qmax de 185,83 mg/g de Nostoc y Kd de 0,095 L/g, sin embargo, ninguno de los modelos estudiados explicaron los resultados para Cd (II). Se demostró que el pH es directamente pro

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Kaasalainen, Ulla, Jouni Jokela, David P. Fewer, Kaarina Sivonen, and Jouko Rikkinen. "Microcystin Production in the Tripartite Cyanolichen Peltigera leucophlebia." Molecular Plant-Microbe Interactions® 22, no. 6 (2009): 695–702. http://dx.doi.org/10.1094/mpmi-22-6-0695.

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We show that the cyanobacterial symbionts of a tripartite cyanolichen can produce hepatotoxic microcystins in situ. Microcystins were detected with high-performance liquid chromatography mass spectrometry both from cephalodia of the tripartite cyanolichen Peltigera leucophlebia and from a symbiotic Nostoc strain isolated from the same lichen specimen. Genetic identities of symbiotic Nostoc strains were studied by amplifying and sequencing the 16S rRNA gene. Also, the presence of the microcystin synthetase gene mcyE was confirmed by sequencing. Three highly toxic microcystins were detected from

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Campos-Rudin, Manuel, and Ana Margarita Silva-Benavides. "Ammonium and phosphate removal using batch laboratory cultures by microalgae and cyanobacteria isolated from Costa Rica water bodies." Revista de Biología Tropical 66, no. 1-1 (2018): 83. http://dx.doi.org/10.15517/rbt.v66i1.33263.

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This research analyzed three green microalgae (Scenedesmus sp., Chlamydomonas sp., and Chlorella sp.) and two cyanobacteria (Synechocystis sp. as unicellular strain and Nostoc sp. as filamentous strain) native from Costa Rica to remove high concentrations of ammonium and phosphate. Cultures were exposed for 120 h to initial concentrations of 70 mgL-1 ammonium and 9 mgL-1 phosphate, under constant light intensity of 60 µmol m-2s-1. Chlorella sp. showed the highest growth rate, followed by Chlamydomonas sp. and the cyanobacteria Nostoc sp. In contrast, Scenedesmus sp. and Synechocystis sp. cultu

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MESFIN, MELAKU, JEFFREY R. JOHANSEN, NICOLE PIETRASIAK, and LAUREN M. BALDARELLI. "Nostoc oromo sp. nov. (Nostocales, Cyanophyceae) from Ethiopia: a new species based on morphological and molecular evidence." Phytotaxa 433, no. 2 (2020): 81–93. http://dx.doi.org/10.11646/phytotaxa.433.2.1.

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In the course of study of the cyanobacterial flora of Ethiopian soil crusts, we isolated a distinctive strain most closely resembling Chroococcidiopsis kashayi, and at first considered it to be a new Chroococcidiopsis species. However, when placed in nitrogen-free medium for an extended time period this strain developed heterocytes, and consequently was placed in the genus Nostoc. It is morphologically distinct from all other Nostoc species due to its consistent formation of microscopic few-celled colonies lacking clear filamentous organization, which release smaller colonies from the mother c

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Carhuapoma-Delacruz, Victor, Melanio Jurado-Escobar, Lisseth Alexandra Vasquez-Paquiyauri, Brian Huamán-Cusi, Rodrigo Huamán-Jurado, and Manuel Castrejón-Valdez. "Physico-Chemical and Microbiological Quality of the Surface Water of the Nostoc Commune of the Andean Communities of Huancavelica, Peru." Journal of Lifestyle and SDGs Review 5, no. 2 (2024): e03386. https://doi.org/10.47172/2965-730x.sdgsreview.v5.n02.pe03386.

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Objective: The purpose was to evaluate the physicochemical and microbiological quality of surface water from the Nostoc commune of Andean communities in Huancavelica-Peru, and to compare its variation in relation to its distribution and environmental conditions. Theoretical Framework: Surface water quality depends on anthropogenic factors. The physico-chemical and microbiological surface water quality indicators of the Nostoc commune are important for environmental monitoring, biomass production and social economic livelihoods. Method: Samples of surface water from streams and ponds were consi

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Chetima Maina Boukar, Mamadou, Kaka Kiari Boukar Kellou, Issa Salifou, et al. "EFFECTS OF NITROGEN NUTRIENT ON THE PRODUCTION OF MYCOSPORINE-LIKE AMINO ACIDS IN NOSTOC SPECIES." International Journal of Advanced Research 11, no. 09 (2023): 423–30. http://dx.doi.org/10.21474/ijar01/17546.

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Mycosporine-like amino acids MAAs belong to a family of secondary metabolites produced by a wide range of different organisms. These compounds had several potential applications in biomedical, in cosmetics and toiletries. In the present study, three Nostoc strains distributed in soil and freshwater were tested for MAA production under different nitrogen conditions. UV-B radiation significantly enhanced the production of MAAs in Nostoc linckia, Nostoc muscorum and Nostoc paludosum under nitrogen sufficient and deficient conditions. The contents of MAAs significantly increased in these three Nos

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Suradkar, Archana, Chelsea Villanueva, Lira A. Gaysina, et al. "Nostoc thermotolerans sp. nov., a soil-dwelling species of Nostoc (Cyanobacteria)." International Journal of Systematic and Evolutionary Microbiology 67, no. 5 (2017): 1296–305. http://dx.doi.org/10.1099/ijsem.0.001800.

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Rezayian, Maryam, Vahid Niknam, and Mohammad Ali Faramarzi. "Antioxidative responses of Nostoc ellipsosporum and Nostoc piscinale to salt stress." Journal of Applied Phycology 31, no. 1 (2018): 157–69. http://dx.doi.org/10.1007/s10811-018-1506-2.

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Carrell, Alyssa A., Dušan Veličković, Travis J. Lawrence, et al. "Novel metabolic interactions and environmental conditions mediate the boreal peatmoss-cyanobacteria mutualism." ISME Journal 16, no. 4 (2021): 1074–85. http://dx.doi.org/10.1038/s41396-021-01136-0.

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AbstractInteractions between Sphagnum (peat moss) and cyanobacteria play critical roles in terrestrial carbon and nitrogen cycling processes. Knowledge of the metabolites exchanged, the physiological processes involved, and the environmental conditions allowing the formation of symbiosis is important for a better understanding of the mechanisms underlying these interactions. In this study, we used a cross-feeding approach with spatially resolved metabolite profiling and metatranscriptomics to characterize the symbiosis between Sphagnum and Nostoc cyanobacteria. A pH gradient study revealed tha

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Sousa, Eliane Brabo de, Aline Lemos Gomes, Celly Jenniffer da Silva Cunha, Paola Vitória Brito Pires, Lisbethe Melo Sckyr Ahndrew, and Vanessa Bandeira da Costa-Tavares. "Effect of Ultraviolet-C Radiation on the Morphology of Cyanobacteria Nostoc sp. LBALBR-2 Isolated from Supply Reservoir (Belém, Pará, Brazil)." Research, Society and Development 11, no. 12 (2022): e447111234391. http://dx.doi.org/10.33448/rsd-v11i12.34391.

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Cyanobacteria are photosynthetic prokaryotic organisms that in aquatic environments can compose the phytoplankton and phytobenthos, being important in the primary production of these ecosystems. The objective of this work was to identify the main morphological variations of the cells, filaments and thallus of the cyanobacteria Nostoc sp. LBALBR-2 submitted to ultraviolet radiation (UV-C) in microcosm systems. The cyanobacteria Nostoc sp. was subjected to four treatments: 1- control treatment in nutrient medium; 2- treatment in nutrient medium with exposure to UV-C radiation; 3- control treatme

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Cepoi, Liliana, Inga Zinicovscaia, Ana Valuta, et al. "Bioremediation Capacity of Edaphic Cyanobacteria Nostoc linckia for Chromium in Association with Other Heavy-Metals-Contaminated Soils." Environments 9, no. 1 (2021): 1. http://dx.doi.org/10.3390/environments9010001.

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Anthropogenic activity is the main factor contributing to soil pollution with various toxic metals, including Cr(VI), which dictates the need for decontamination. Often, the traditionally used remediation methods (soil removal, stabilization/solidification, physicochemical extraction, and soil washing) are not sufficiently efficient. Among gentle soil remediation, options can be considered. The aim of this study is to assess the ability of Nostoc linckia to remediate soils contaminated with Cr(VI) in association with other metals. Metal uptake by biomass was assessed using neutron activation a

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Costa, José-Luis, Per Paulsrud, Jouko Rikkinen, and Peter Lindblad. "Genetic Diversity of Nostoc Symbionts Endophytically Associated with Two Bryophyte Species." Applied and Environmental Microbiology 67, no. 9 (2001): 4393–96. http://dx.doi.org/10.1128/aem.67.9.4393-4396.2001.

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ABSTRACT The diversity of the endophytic Nostoc symbionts of two thalloid bryophytes, the hornwort Anthoceros fusiformis and the liverwort Blasia pusilla, was examined using the tRNALeu (UAA) intron sequence as a marker. The results confirmed that many different Nostocstrains are involved in both associations under natural conditions in the field. The level of Nostoc diversity within individual bryophyte thalli varied, but single DNA fragments were consistently amplified from individual symbiotic colonies. Some Nostocstrains were widespread and were detected from thalli collected from differen

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Fidor, Anna, Robert Konkel, and Hanna Mazur-Marzec. "Bioactive Peptides Produced by Cyanobacteria of the Genus Nostoc: A Review." Marine Drugs 17, no. 10 (2019): 561. http://dx.doi.org/10.3390/md17100561.

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Cyanobacteria of the genus Nostoc are widespread in all kinds of habitats. They occur in a free-living state or in association with other organisms. Members of this genus belong to prolific producers of bioactive metabolites, some of which have been recognized as potential therapeutic agents. Of these, peptides and peptide-like structures show the most promising properties and are of a particular interest for both research laboratories and pharmaceutical companies. Nostoc is a sole source of some lead compounds such as cytotoxic cryptophycins, antiviral cyanovirin-N, or the antitoxic nostocycl

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Mollenhauer, Dieter, and Resi Mollenhauer. "Nostoc in symbiosis - Taxonomic implications." Algological Studies/Archiv für Hydrobiologie, Supplement Volumes 83 (December 19, 1996): 435–46. http://dx.doi.org/10.1127/algol_stud/83/1996/435.

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Syiem, Mayashree B., B. Bashisha Nongbri, A. Pinokiyo, Amrita Bhattacharjee, Natasha A. Nongrum, and Luxemburgh Hynniewta. "Significance of cyanobacterial diversity in different ecological conditions of Meghalaya, India." Journal of Applied and Natural Science 2, no. 1 (2010): 134–39. http://dx.doi.org/10.31018/jans.v2i1.112.

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The present study deals with preliminary investigation of cyanobacterial diversity in Meghalaya. A total of 75 samples were collected from 10 different ecosystems and analyzed. 65 strains of cyanobacteria isolated under 11 genera include Nostoc, Anabaena, Calothrix, Cylindrospermum, Gleocapsa, Fischerella, Plectonema, Tolypothrix, Stigonema, Loriella and Westiellopsis. Nostoc was most abundant. Diversity analysis indicated maximum Shannon’s diversity index (H) in Mawlai. Highest Simpson’s diversity index was seen in Sung Valley (0.75). Both Shannon’s and Simpson’s diversity indices were lowest

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Mioa, V. P. W., A. Rabenau, and A. Lee. "Cultural and molecular characterization of photobionts of Peltigera Membranacea." Lichenologist 29, no. 6 (1997): 571–86. http://dx.doi.org/10.1006/lich.1997.0114.

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AbstractA molecular study was undertaken to clarify the identity of the photobiont in colourmorphs of the lichen, Peltigera membranacea. Two strains of cyanobacteria, identified as Nosroc sp. by morphology, were cultivated from each of two lichen specimens. Prokaryotic (16S) ribosomal RNA gene fragments were amplified by the polymerase chain reaction (PCR) from DNA extracted from the isolated strains and the lichens, and sequenced directly. Sequences were 98 1% identical between lichen specimens, TDI#AR94 and TDI#AR95, and highly similar to sequences published, or generated in this study from

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Bergman, Birgitta, and Bruce Osborne. "The Gunnera: Nostoc Symbiosis." Biology and Environment: Proceedings of the Royal Irish Academy 102B, no. 1 (2002): 35–39. http://dx.doi.org/10.1353/bae.2002.0024.

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BERGMAN, B., C. JOHANSSON, and E. SODERBACK. "The Nostoc-Gunnera symbiosis." New Phytologist 122, no. 3 (1992): 379–400. http://dx.doi.org/10.1111/j.1469-8137.1992.tb00067.x.

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Dodds, Walter K., Dolly A. Gudder, and Dieter Mollenhauer. "THE ECOLOGY OF NOSTOC." Journal of Phycology 31, no. 1 (1995): 2–18. http://dx.doi.org/10.1111/j.0022-3646.1995.00002.x.

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Maldener, Iris. "Nostoc: ein prokaryotischer Vielzeller." Biologie in unserer Zeit 44, no. 5 (2014): 304–10. http://dx.doi.org/10.1002/biuz.201410545.

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Ruiz Vigo, Wilman Manuel. "Importancia de las Cyanophytas." REVISTA PERSPECTIVA 20, no. 2 (2019): 240–44. http://dx.doi.org/10.33198/rp.v20i2.00036.

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   Se analiza la importancia de las algas de la División Cyanophyta y su calidad alimenticia y otros usos. Se destaca principalmente las algas de los géneros Nostoc y Spirulina. Se hacen recomendaciones para la revaloración de estas algas y su uso más frecuente en alimentación. Palabras clave: Cyanophyta, Nostoc, Spirulina, alimentación.  

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Tang, Jun, Zheng-Yu Hu, and Xin-Wen Chen. "Free Radical Scavenging and Antioxidant Enzymes Activation of Polysaccharide Extract from Nostoc sphaeroides." American Journal of Chinese Medicine 35, no. 05 (2007): 887–96. http://dx.doi.org/10.1142/s0192415x07005351.

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Nostoc sphaeroides Kuetzing has been used as a traditional medicine in China to treat a variety of ailments. This research identified the antioxidant activities of polysaccharide extract from Nostoc sphaeroides. The extract, which contains 46.2% carbohydrates, exhibited an effective scavenging capability on superoxide radical, hydroxyl radicals in non site-specific as well as site-specific assays, and also performed lipid peroxidation inhibition in a dose-dependent manner. Polysaccharide extract had no 1,1-diphenyl-2-picrylhydrazyl radical scavenging potential at all test concentrations. Activ

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Mojo-Quisani, Antonieta, Daniel A. Ccallo-Silva, David Choque-Quispe, et al. "Development of Edible Films Based on Nostoc and Modified Native Potato Starch and Their Physical, Mechanical, Thermal, and Microscopic Characterization." Polymers 16, no. 17 (2024): 2396. http://dx.doi.org/10.3390/polym16172396.

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Considering the potential of biopolymers from underutilized Andean sources in Peru to improve the characteristics of edible films, this work aimed to evaluate the formation of a polymeric matrix composed of Nostoc and modified potato starch for the formulation of edible films for food coating. The effects of polymer matrix ratio and drying temperature on films obtained by thermoforming were studied, determining the water vapor permeability and mechanical properties using a multifactorial design. Additionally, thermal properties were characterized by TGA and DSC, and structural properties by FT

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Pérez, Germán, Sascha M. B. Krause, Paul L. E. Bodelier, Marion Meima-Franke, Leonardo Pitombo, and Pilar Irisarri. "Interactions between Cyanobacteria and Methane Processing Microbes Mitigate Methane Emissions from Rice Soils." Microorganisms 11, no. 12 (2023): 2830. http://dx.doi.org/10.3390/microorganisms11122830.

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Cyanobacteria play a relevant role in rice soils due to their contribution to soil fertility through nitrogen (N2) fixation and as a promising strategy to mitigate methane (CH4) emissions from these systems. However, information is still limited regarding the mechanisms of cyanobacterial modulation of CH4 cycling in rice soils. Here, we focused on the response of methane cycling microbial communities to inoculation with cyanobacteria in rice soils. We performed a microcosm study comprising rice soil inoculated with either of two cyanobacterial isolates (Calothrix sp. and Nostoc sp.) obtained f

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