Bibliografías temáticas / Aquatic prokaryotes

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Literatura académica sobre el tema "Aquatic prokaryotes"

Autor: Grafiati
Publicado: 25 de mayo de 2024
Última modificación: 31 de julio de 2025

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Artículos de revistas sobre el tema "Aquatic prokaryotes"

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Eiler, Alexander, Domenico Savio, Laurent Fontaine, and Lorenzo Pin. "Developing prokaryotic water quality indicators." ARPHA Conference Abstracts 4 (March 4, 2021): e65409. https://doi.org/10.3897/aca.4.e65409.

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Despite the importance of prokaryotes in aquatic ecosystem and their predictable diversity patterns across space and time, biomonitoring tools relying on prokaryotes are widely lacking. Using metabarcoding, as well as other molecular methods, we were able to identify multiple prokaryotic descriptors and illustrate their reliability and advantages in aquatic environmental assessment. Multivariate statistical and machine learning methods combined with variation coefficient and overall prevalence of taxonomic groups were used to detect possible biological indicators among prokaryotes for various
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Ochi Agostini, Vanessa, Letícia Terres Rodrigues, Alexandre José Macedo, and Erik Muxagata. "Comparison of techniques for counting prokaryotes in marine planktonic and biofilm samples." Scientia Marina 85, no. 3 (2021): 211–20. http://dx.doi.org/10.3989/scimar.05117.019.

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Though a large number of techniques are available for the study of aquatic bacteria, the aim of this study was to establish a technique for analysing free-living and biofilm prokaryotic cells through laboratory assays. In particular, we wished to analyse the efficiency of ultrasound to detach and disrupt biofilm, to obtain an efficient stain treatment for quantifying free-living and biofilm prokaryotes in flow cytometry (FC), and to compare epifluorescence microscopy (EFM), scanning electron microscopy (SEM) and FC for quantifying free-living and biofilm prokaryotes#. Marine-grade plywood subs
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Wild, Christian, Christian Laforsch, and Markus Huettel. "Detection and enumeration of microbial cells within highly porous calcareous reef sands." Marine and Freshwater Research 57, no. 4 (2006): 415. http://dx.doi.org/10.1071/mf05205.

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In order to assess and to compare the abundances of prokaryotes in coral sands from three different areas in the Indo-Pacific, a technique was developed and evaluated for enumeration of prokaryotes living on and within calcareous grains. Propidium iodide labelling of prokaryotes and consecutive confocal laser scanning microscopy showed microbial colonisation within pores and small fissures of the coral sands. This embedded microbial colonisation required at least four extractions with weak acetic acid to dissolve the grain surface layer in order to detach 97% of the prokaryotic cells. Microbia
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Garuglieri, Elisa, Jenny Marie Booth, Marco Fusi, et al. "Morphological characteristics and abundance of prokaryotes associated with gills in mangrove brachyuran crabs living along a tidal gradient." PLOS ONE 17, no. 4 (2022): e0266977. http://dx.doi.org/10.1371/journal.pone.0266977.

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Due to the chemico-physical differences between air and water, the transition from aquatic life to the land poses several challenges for animal evolution, necessitating morphological, physiological and behavioural adaptations. Microbial symbiosis is known to have played an important role in eukaryote evolution, favouring host adaptation under changing environmental conditions. We selected mangrove brachyuran crabs as a model group to investigate the prokaryotes associated with the gill of crabs dwelling at different tidal levels (subtidal, intertidal and supratidal). In these animals, the gill
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Weinbauer, MG, C. Griebler, HM van Aken, and GJ Herndl. "Viral infection of prokaryotic plankton during early formation of the North Atlantic Deep Water." Aquatic Microbial Ecology 84 (June 4, 2020): 175–89. http://dx.doi.org/10.3354/ame01934.

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Viral abundance was assessed in different water masses of the NW Atlantic, and the development of viral abundance, lytic viral infection and lysogeny was followed for the first ca. 5000 km (corresponding to ca. 50 yr in the oceanic conveyor belt) of the western branch of the North Atlantic Deep Water (NADW). Viral abundance was significantly higher in the 100 m layer than in the NADW (2400-2700 m depth) and the Denmark Strait Overflow Water (2400-3600 m depth). The virus-to-prokaryote ratio (VPR) increased with depth, ranging from 32-43 for different water masses of the bathypelagic ocean, thu
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Parada, Verónica, Gerhard J. Herndl, and Markus G. Weinbauer. "Viral burst size of heterotrophic prokaryotes in aquatic systems." Journal of the Marine Biological Association of the United Kingdom 86, no. 3 (2006): 613–21. http://dx.doi.org/10.1017/s002531540601352x.

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Viral burst size (BS), i.e. the number of viruses released during cell lysis, is a critical parameter for assessing the ecological and biogeochemical role of viruses in aquatic systems. Burst size is typically estimated by enumerating the viral particles in bacteria using transmission electron microscopy. Here, we review the average BS reported for different aquatic systems, present several hypotheses on the control of the BS and evaluate whether there are relationships between BS and bacterial activity parameters across systems. Based on reports from a variety of different aquatic environment
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Ant�n, Josefa, Ram�n Rossell�-Mora, Francisco Rodr�guez-Valera, and Rudolf Amann. "Extremely Halophilic Bacteria in Crystallizer Ponds from Solar Salterns." Applied and Environmental Microbiology 66, no. 7 (2000): 3052–57. http://dx.doi.org/10.1128/aem.66.7.3052-3057.2000.

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ABSTRACT It is generally assumed that hypersaline environments with sodium chloride concentrations close to saturation are dominated by halophilic members of the domain Archaea, while Bacteriaare not considered to be relevant in this kind of environment. Here, we report the high abundance and growth of a new group of hitherto-uncultured Bacteria in crystallizer ponds (salinity, from 30 to 37%) from multipond solar salterns. In the present study, these Bacteria constituted from 5 to 25% of the total prokaryotic community and were affiliated with theCytophaga-Flavobacterium-Bacteroides phylum. G
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Dando, P. R., and A. J. Southward. "Chemoautotrophy in Bivalve Molluscs of the Genus Thyasira." Journal of the Marine Biological Association of the United Kingdom 66, no. 4 (1986): 915–29. http://dx.doi.org/10.1017/s0025315400048529.

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The bivalves Thyasiraflexuosa and T. sarsi have enlarged gills which contain numerous prokaryotes. Gills from freshly collected animals contain high concentrations of elemental sulphur. Homogenates of gill tissue show activity for ribulosebisphosphate carboxylase, adenylylsulphate reductase, sulphate adenylyltransferase and sulphate adenylyltransferase (ADP), indicating that the prokaryotes are sulphur-oxidizing autotrophs. Both species can burrow to depths of 8 cm below the sediment surface and use their vermiform feet to construct channels penetrating deeper into the sediment. T.flexuosa and
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Zubkov, M. V. "Photoheterotrophy in marine prokaryotes." Journal of Plankton Research 31, no. 9 (2009): 933–38. http://dx.doi.org/10.1093/plankt/fbp043.

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Elloumi, Jannet, Wassim Guermazi, Habib Ayadi, Abderrahmen Bouain, and Lotfi Aleya. "Abundance and biomass of prokaryotic and eukaryotic microorganisms coupled with environmental factors in an arid multi-pond solar saltern (Sfax, Tunisia)." Journal of the Marine Biological Association of the United Kingdom 89, no. 2 (2008): 243–53. http://dx.doi.org/10.1017/s0025315408002269.

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The distribution of abundance and biomass of prokaryotes, flagellates, ciliates and phytoplankton, were studied in five ponds of increasing salinity in the Sfax solar saltern (Tunisia) coupled with environmental factors. The results showed that abundance of eukaryotic microorganisms decreased with increasing salinity of the ponds whereas prokaryotes (heterotrophic bacteria and Archaea) were abundant in the hyper-saline ponds. Phototrophic picoplankton was found in a large range of salinity values (70 and 200‰). Phototrophic non-flagellated nanoplankton which dominated in the first sampled pond
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Tesis sobre el tema "Aquatic prokaryotes"

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Halm, Hannah. "Nitrogen assimilation by aquatic prokaryotes." Berlin mbv, Mensch-und-Buch-Verl, 2009. http://d-nb.info/100292491X/04.

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Rain, Franco Angel. "Consequences of environmental disturbances on community structure and functioning of aquatic prokaryotes." Electronic Thesis or Diss., Sorbonne université, 2021. https://theses.hal.science/tel-03730170.

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Les microbes sont affectés par les perturbations environnementales qui affectent la stabilité fonctionnelle des communautés microbiennes. Cependant, leurs réponses sont complexes, difficiles à élucider et les mécanismes de la stabilité fonctionnelle sont encore mal compris. Dans cette thèse, j'ai étudié les réponses microbiennes aux perturbations environnementales, des populations uniques aux communautés complexes. Dans le cas d'une population unique, nous avons étudié la réponse transcriptionnelle de populations bactériennes uniques dont la niche varie le long d'un gradient environnemental. P
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Silva, Fábio Alberto Borges Nunes da. "Effects of radioactivity and other variables on aquatic microorganisms: case study in springwaters in Auvergne." Master's thesis, 2021. http://hdl.handle.net/10773/32576.

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The present work proposes to show the most recent information regarding the microorganisms present in mineral and thermal springs, talking about the influence that different environmental variables, with a focus on radioactivity, have on the prokaryote and virus communities. The dissertation consists of Part 1, which is a literature review that addresses prokaryotes and viruses in water sources. The review addresses the impact of variables such as temperature, pH and radioactivity on both groups, both in the freshwater context in general and specifically in water sources. Then, in Part 2, what
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LaBrie, Richard. "Origine, composition et destinée de la matière organique dissoute et ses interactions avec les communautés de procaryotes dans la mer du Labrador." Thesis, 2019. http://hdl.handle.net/1866/24482.

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Dans les océans, les procaryotes sont des acteurs clés dans le cycle du carbone puisqu’ils consomment une fraction importante de la matière organique dissoute (MOD) relâchée par les producteurs primaires. Puisque cette matière organique est très complexe et de biodisponibilité variable, les communautés de procaryotes qui la consomme sont très diversifiées et spécialisées pour certains types de composés organiques. En utilisant cette matière organique, les procaryotes contribuent à réintroduire ce carbone dans le réseau trophique, une source d’énergie essentielle dans les gyres oligotrophes de
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Libros sobre el tema "Aquatic prokaryotes"

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Kirchman, David L. Predation and protists. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198789406.003.0009.

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Protists are involved in many ecological roles in natural environments, including primary production, herbivory and carnivory, and parasitism. Microbial ecologists have been interested in these single-cell eukaryotes since Antonie van Leeuwenhoek saw them in his stool and scum from his teeth. This chapter focuses on the role of protozoa (purely heterotrophic protists) and other protists in grazing on other microbes. Heterotrophic nanoflagellates, 3–5 microns long, are the most important grazers of bacteria and small phytoplankton in aquatic environments. In soils, flagellates are also importan
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Capítulos de libros sobre el tema "Aquatic prokaryotes"

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Bronner, Gisèle, Didier Debroas, François Enault, et al. "Study of Prokaryotes and Viruses in Aquatic Ecosystems by Metagenetic and Metagenomic Approaches." In Lake Pavin. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-39961-4_15.

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Jana, B. B. "Prokaryota." In Aquatic Sciences in the Tropics. CRC Press, 2024. http://dx.doi.org/10.1201/9781003501688-4.

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Chen, F., W. A. Dustman, and R. E. Hodson. "Microscopic detection of the toluene dioxygenase gene and its expression inside bacterial cells in seawater using prokaryotic in situ PCR." In Molecular Ecology of Aquatic Communities. Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4201-4_10.

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Truitt, Chelsea, and Ratnakar Deole. "Viruses of Extremely Halophilic Prokaryotes." In Bacteriophages [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96720.

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As viruses are known to be the most distinct source of biodiversity, it is not surprising that they are the most abundant biological group in hypersaline environments such as aquatic systems which have saturated salt concentrations. However, of more than 6000 known prokaryote viruses less than 100 are considered to be extremely halophilic (salt loving) and have the ability to infect bacteria. Combination of information obtained from culture dependent and culture independent methods allow better understanding of these viruses. This review will update the advances in halophilic viruses and its i
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Berninger, Ulrike-G., David A. Caron, Robert W. Sanders, and Bland J. Finlay. "Heterotrophic flagellates of planktonic communities, their characteristics and methods of study." In The Biology of Free-Living Heterotrophic Flagellates. Oxford University PressOxford, 1992. http://dx.doi.org/10.1093/oso/9780198577478.003.0004.

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Abstract Heterotrophic flagellates are an integral and important component of the plankton communities of aquatic ecosystems. Abundances of heterotrophic flagellates in most natural plankton assemblages range from 10 to 10 cells per ml. Recent advances in the methods of counting flagellates and of examining their trophic activities have established that they are significant consumers of bacterial, cyanobacterial, and micro-algal biomass in these environments. Their grazing activities arc the primary factor controlling bacterial densities. Flagellate herbivory can significantly affect the abund
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Trovalim Jordão, Felipe, Aline Diniz Cabral, Felipe Baena Garcia, et al. "Chitinase from Basal Trypanosomatids and Its Relation to Marine Environment: New Insights on Leishmania Genus Evolutionary Theories." In Chitin-Chitosan - Isolation, Properties, and Applications [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.111471.

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Leishmaniasis, an infectious disease that affects humans, domestic dogs, and wild animals, is caused by 20 of the 53 Leishmania genus species and is transmitted by sandflies. Despite its significant impact, the disease is often neglected. Leishmania genus, belong to Trypanosomatide Family and Kinetoplastida Order, are grouped in five subgroups according to biogeographic and evolution history of parasites and hosts. The GH18 Leishmania chitinase is encoded by a specie-specific single copy gene, conserved in basal groups of trypanosomatids, and is absent in the genus Trypanosoma. Preservation of
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Santhakumari, Sivasubramanian, Pandurangan Poonguzhali, Abimannan Arulkumar, Prathapkumar Halady Shetty, and Madhu Dyavaiah. "Marine Cyanobacteria: Sustainable Resource for Vibrant Antimicrobial Agents." In Frontiers in Antimicrobial Agents. BENTHAM SCIENCE PUBLISHERS, 2023. http://dx.doi.org/10.2174/9789815080148123030008.

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Marine cyanobacteria are oxygenic, gram-negative nitrogen-fixing photosynthetic prokaryotes in different environments. It is a universal organism present in aquatic and terrestrial and also extensively scattered in extreme habitats such as hot springs, deserts and glacial environments. Growing concerns over disease outbreaks and other environmental concerns require alternative ways that are economically viable, sustainable, as well as feasible. Recently, cyanobacteria have achieved much consideration because of their potential relevance in various fields, including aquaculture, wastewater trea
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Schweichhart Sergej, Johannes. "Prokaryotic Viruses: Intriguing Players in the Aquatic Realm." In Reference Module in Earth Systems and Environmental Sciences. Elsevier, 2021. http://dx.doi.org/10.1016/b978-0-12-819166-8.00106-7.

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Eckert, Kristin A., and Thomas A. Kunkel. "The fidelity of DNA polymerases used in the polymerase chain reactions." In PCR Volume 1. Oxford University PressOxford, 1991. http://dx.doi.org/10.1093/oso/9780199631964.003.0014.

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Abstract Purified DNA polymerases are one of the primary tools for molecular biology. Yet choosing the most appropriate DNA polymerase for any particular application requires an understanding of the substantial biochemical differences between the available enzymes. One aspect of interest for PCR is the fidelity of DNA polymerization, i.e. the number of errors produced per nucleotide synthesized. We begin this chapter by discussing the enzymology of error discrimination by DNA polymerases during DNA synthesis in vitro. We then describe the fidelity of several prokaryotic DNA polymerases using a
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Actas de conferencias sobre el tema "Aquatic prokaryotes"

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BULZU, Paul-Adrian, Adorján CRISTEA, Doriana M. BUDA, and Horia L. BANCIU. "Asgardarchaeota – A Novel Prokaryotic Group Discovered in Aquatic Sediments that Might Shed Light on the Origin and Early Evolution of Eukaryotes." In Air and Water Components of the Environment 2019 Conference. Casa Cărţii de Ştiinţă, 2019. http://dx.doi.org/10.24193/awc2019_43.

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