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Статті в журналах з теми "Microorganisms – Motility"
Petit, M. D. A., U. Velden, A. J. Winkelhoff, and J. Graaff. "Preserving the motility of microorganisms." Oral Microbiology and Immunology 6, no. 2 (April 1991): 107–10. http://dx.doi.org/10.1111/j.1399-302x.1991.tb00460.x.
Повний текст джерелаMehdizadeh Allaf, Malihe, and Hassan Peerhossaini. "Cyanobacteria: Model Microorganisms and Beyond." Microorganisms 10, no. 4 (March 24, 2022): 696. http://dx.doi.org/10.3390/microorganisms10040696.
Повний текст джерелаGrassi, Hilda Cristina, Efrén De Jesús Andrades, María Lorena Lobo, and Jesús Enrique Andrades. "A prototype biospecklemeter for microbiological analysis: a starting point for a potential digital-image laser antibiotic susceptibility test." Laser Physics 32, no. 9 (September 1, 2022): 095604. http://dx.doi.org/10.1088/1555-6611/ac8677.
Повний текст джерелаMartínez, Asunción, Sandra Torello, and Roberto Kolter. "Sliding Motility in Mycobacteria." Journal of Bacteriology 181, no. 23 (December 1, 1999): 7331–38. http://dx.doi.org/10.1128/jb.181.23.7331-7338.1999.
Повний текст джерелаVarshney, Rohit, Arshdeep Kaur Gill, Mujeeb Alam, Chinmayee Agashe, and Debabrata Patra. "Fluid actuation and buoyancy driven oscillation by enzyme-immobilized microfluidic microcapsules." Lab on a Chip 21, no. 22 (2021): 4352–56. http://dx.doi.org/10.1039/d1lc00699a.
Повний текст джерелаSarbu, Ionela, Tatiana Vassu, Mariana Carmen Chifiriuc, Marcela Bucur, Ileana Stoica, Petrut Stefana, Elena Rusu, Horatiu Moldovan, and Diana Pelinescu. "Assessment the Activity of Some Enzymes and Antibiotic Substances Sensitivity on Pathogenic Bacteria Species." Revista de Chimie 68, no. 12 (January 15, 2018): 3015–21. http://dx.doi.org/10.37358/rc.17.12.6029.
Повний текст джерелаSidorova, Daria E., Mariia I. Skripka, Inessa A. Khmel, Olga A. Koksharova, and Vladimir A. Plyuta. "Effects of Volatile Organic Compounds on Biofilms and Swimming Motility of Agrobacterium tumefaciens." Microorganisms 10, no. 8 (July 26, 2022): 1512. http://dx.doi.org/10.3390/microorganisms10081512.
Повний текст джерелаScherr, Thomas, Chunliang Wu, W. Todd Monroe, and Krishnaswamy Nandakumar. "Computational fluid dynamics as a tool to understand the motility of microorganisms." Computers & Fluids 114 (July 2015): 274–83. http://dx.doi.org/10.1016/j.compfluid.2015.03.012.
Повний текст джерелаAcres, Jacqueline, and Jay Nadeau. "2D vs 3D tracking in bacterial motility analysis." AIMS Biophysics 8, no. 4 (2021): 385–99. http://dx.doi.org/10.3934/biophy.2021030.
Повний текст джерелаKlimenko, A. I., and S. A. Lashin. "MODELING CHANGES IN THE ADAPTABILITY AND MOTILITY OF MICROORGANISMS IN CHANGING AQUATIC ECOSYSTEMS." http://eng.biomos.ru/conference/articles.htm 1, no. 19 (2021): 203–4. http://dx.doi.org/10.37747/2312-640x-2021-19-203-204.
Повний текст джерелаДисертації з теми "Microorganisms – Motility"
Brumley, Douglas Richard. "Hydrodynamics of swimming microorganisms." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.608174.
Повний текст джерелаBennett, Rachel R. "Physics of microorganism behaviour : motility, synchronisation, run-and-tumble, phototaxis." Thesis, University of Oxford, 2015. http://ora.ox.ac.uk/objects/uuid:accc7f3c-b472-4bb9-b821-59725a54ccb7.
Повний текст джерелаFadlallah, Hadi. "Effects of hydrodynamic stress on microorganisms in photobioreactors for biofuel production." Thesis, Sorbonne Paris Cité, 2016. http://www.theses.fr/2016USPCC281/document.
Повний текст джерелаUnder the current global energy crisis, the demand of energy production relying on renewable sources has become a global need. Biofuels offer a transition towards a world of renewable energy supply and production. The interests in developing a third generation of biofuels produced from microalgae and cyanobacteria have clearly increased. Thus, the design and construction of a convenient culturing system under optimal conditions is necessary to benefit from the energy content of these species. Photobioreactors (PBRs) offer a good control over culture conditions and growth.This work investigates the effects of shear stress, generated by stirring in agitated PBRs and bubbling in airlift PBRs, on the growth and motility of two species of microorganisms, the cyanobacterium Synechocystis and the microalgae Chlamydomonas reinhardtii. The results show that Synechocystis is highly resistant to shear stress; the variation in exponential growth rate is limited to the breakdown of cellular colonies, while the carrying capacity appears to increase as a function of shear stress up to a maximal value. On the other hand, C. reinhardtii shows to be more sensitive; the exponential growth rate increases with shear stress intensity, while the carrying capacity seems to be less affected. A logistic growth model featuring two growth parameters, the exponential growth rate and the carrying capacity, is proposed to describe the growth with time. From a point of view of dynamical system approach, it is experimentally shown that the population’s instantaneous growth rate and the growth rate per capita tends to zero and converges around a stable fixed point once the population’s density reaches the carrying capacity of the growth system.Another aspect of this work is studying the motility of the two microorganisms during their growth cycle when different levels of shear stress are applied on them. The average swimming velocity is determined as a function of growth cycle for different shear stress intensities. The results show that the motility of C. reinhardtii follows three different phases; a rising phase starting in the middle of the exponential growth phase, a decay phase and finally a damped phase during the stationary growth phase. It is shown that agitation increases the magnitude of the average velocity and advances the cellular motility. Besides, high intensity in the applied shear stress led to an increase in the damping of the average velocity implying a quicker decay to the limit value at the end of the growth. For Synechocystis, the average velocity did not follow a defined pattern with time. However, it seems that the peak of the velocity occurs always in the middle of exponential phase
Fauquenoy, Sylvain. "Implication de la N-glycosylation dans les mécanismes de motilité et d’invasion des cellules hôtes chez Toxoplasma gondii." Thesis, Lille 1, 2010. http://www.theses.fr/2010LIL10098/document.
Повний текст джерелаThe apicomplexan parasite Toxoplasma gondii penetrates virtually any kind of mammalian cell using proteins released from late secretory organelles and a unique form of gliding motility. How T. gondii glycosylated proteins mediate host-parasite interactions remains elusive. Here, we report comprehensive proteomics and glycomics analyses showing that several key components required for interactions between T. gondii and host cells are N-glycosylated. Detailed structural characterization confirmed that N-glycans from T. gondii total protein extracts consist of oligomannosidic and paucimannosidic sugars, which are rarely present on mature eukaryotic glycoproteins. In situ fluorescence using concanavalin A and Pisum sativum agglutinin predominantly stained the entire parasite body. Visualization of Toxoplasma glycoproteins purified by affinity chromatography identified components involved in gliding motility, moving junction, and other additional functions. Importantly, tunicamycin-treated parasites were considerably reduced in motility, host cell invasion, and growth. In addition, we show that all three potential N-glycosylated sites of GAP50 are occupied by unusual N-glycan structures with terminal glucoses. Using site-directed mutagenesis, we demonstrate that N-glycosylation is a prerequisite for GAP50 transport into the inner membrane complex. Assembly of key partners into gliding complex by unglycosylated GAP50 and parasite motility are severely impaired. Collectively, these results provide the first molecular description of T. gondii N-glycosylation functions that are vital for parasite motility and host cell entry
Constantino, Maira Alves. "Investigating effects of morphology and flagella dynamics on swimming kinematics of different helicobacter species using single-cell imaging." Thesis, 2017. https://hdl.handle.net/2144/27383.
Повний текст джерелаTout, Jessica Alyce. "Exploring the function and behaviour of natural populations of coral reef microbes." Thesis, 2016. http://hdl.handle.net/10453/43503.
Повний текст джерелаMicroorganisms live in tight associations with corals, but the ecological interactions and microbial functions and behaviours underpinning these relationships are not yet fully understood. The goal of this thesis is to define coral-microbe interactions by exploring how the composition, behaviour and function of microbial communities vary throughout a coral reef and how increasing sea water temperatures can affect coral-microbial relationships. As a first step to achieving this aim, In Chapter 1 we used metagenomics to characterise patterns in microbial composition and metabolic capacity across different niches, including coral-associated and non-coral associated microenvironments, on Heron Island, the Great Barrier Reef (GBR). We found that the composition and metabolic potential of coral reef bacteria is highly heterogeneous across a coral reef ecosystem, with a shift from an oligotrophy-dominated community (e.g. SAR11, Prochlorococcus, Synechococcus) in the open water and sandy substrate niches, to a community characterised by an increased frequency of copiotrophic bacteria (e.g. Vibrio, Pseudoalteromonas, Alteromonas) in the coral seawater niches. Among the major functional patterns observed were significant increases in genes associated with bacterial motility and chemotaxis in samples associated with the surfaces of coral colonies. The observation of increased motility and chemotaxis near to coral surfaces is notable given previous evidence that these phenotypes may be involved in coral disease processes. The research presented in this chapter was published in Microbial Ecology (2014 67 (3): 540-552) To investigate these patterns in chemotaxis further we next (Chapter 2) directly examined the potential ecological role of chemotaxis among coral-associated bacteria, by using laboratory based and in situ chemotaxis assays to test levels of chemotaxis among natural communities of coral reef microbes. We examined the behavioural responses towards several chemoattractants known to be released by corals and their symbiotic dinoflagelletes including amino acids, carbohydrates, ammonium chloride, and dimethylsulfonopropionate (DMSP). Using these approaches we found that bacteria associated with the surfaces of the corals exhibited high levels of chemotaxis, particularly towards DMSP and several amino acids. Levels of chemotaxis by coral-associated bacteria were consistently higher than those demonstrated by non-coral associated bacteria. This work was published in the ISME Journal (doi: 10.1038/ismej.2014.261) We next extended the in situ chemotaxis assays to examine the chemotactic behaviour of bacteria associated with other important coral reef organisms, sponges. These results redefine the sponge-symbiont acquisition paradigm whereby we show for that bacteria use chemotaxis to locate their sponge host on a coral reef. This work is in preparation for submission to the ISME Journal. After defining some of the functions and behaviours involved in coral reef microbiology, we next examined how these processes may shift under changing environmental conditions, associated with climate change. To determine how environmental variability, specifically thermal stress, influences bacterial community composition, behaviour and metabolic capacity, manipulation experiments were conducted using the coral Pocillopora damicornis. To investigate the dynamics of coral-associated vibrios under heat stress, in Chapter 4 we used Vibrio-specific amplicon sequencing approaches and qPCR to quantify shifts in the abundance and composition of natural populations of Vibrio, with a specific focus on the putative coral pathogen V. coralliilyticus. These experiments revealed that increasing seawater temperatures can favour the proliferation of potential coral pathogens among a natural mixed microbial community. This work has been published in Frontiers in Microbiology (6:432.doi: 10.3389/fmicb.2015.00432). In Chapter 5, we decided to explore the entire coral-associated community by using metagenomics and metatranscriptomics to investigate how the phylogeny and function of coral associated microbes shift resulting from increasing seawater temperatures. We found a dramatic shift in the community from Endozoicomonaceae being dominant in the control corals, while there was an appearance of the vibrios under increasing sea water temperatures in line with our findings from chapter 4. We also observed functional shifts that involved an upregulation of chemotaxis and motility genes at higher temperatures and were shown to be affiliated with vibrios, a genus which contains several putative coral pathogens. Taken together our data demonstrate that coral reef bacterial communities are highly dynamic and that key groups of copiotrophic bacteria have the capacity to use behaviours such as chemotaxis to use nutrient gradients to potentially locate and colonize benthic host animals including corals and sponges. Increasing seawater temperatures causes dramatic changes in the coral-associated bacterial community, allowing for the proliferation of potential coral pathogens and increased expression of behavioural phenotypes that may promote successful infection of corals.
Книги з теми "Microorganisms – Motility"
NATO Advanced Study Institute on Biophysics of Photoreceptors and Photomovements in Microorganisms (1990 Tirrenia, Italy). Biophysics of photoreceptors and photomovements in microorganisms. New York: Plenum Press, 1991.
Знайти повний текст джерелаAharon Katzir-Katchalsky Conference on "Sensing and Response in Microorganisms" (1985 Weizmann Institute of Science and Kibbutz Ayelet Hashahar). Sensing and response in microorganisms. Amsterdam: Elsevier Science Publishers, 1985.
Знайти повний текст джерелаMichael, Eisenbach, Balaban Miriam, and Aharon Katzir-Katchalsky Conference on the "Sensing and Response in Microorganisms" (1985 : Weizmann Institute of Science and Kibbutz Ayelet Hashahar), eds. Sensing and response in microorganisms. Amsterdam: Elsevier Science Publishers, 1985.
Знайти повний текст джерела(Editor), F. Lenci, Francesco Ghetti (Editor), Giuliano Colombetti (Editor), D. P. Häder (Editor), and Pill-Soon Song (Editor), eds. Biophysics of Photoreceptors and Photomovements in Microorganisms (Nato Science Series: A:). Springer, 1991.
Знайти повний текст джерелаE. coli in Motion (Biological and Medical Physics, Biomedical Engineering). Springer, 2003.
Знайти повний текст джерелаW, Alt, and Hoffmann G, eds. Biological motion: Proceedings of a workshop held in Königswinter, Germany, March 16-19, 1989. Berlin: Springer-Verlag, 1990.
Знайти повний текст джерелаТези доповідей конференцій з теми "Microorganisms – Motility"
Scherr, Thomas F., Chunliang Wu, W. Todd Monroe, and Krishnaswamy Nandakumar. "Numerical Simulation of Cell Motility at Low Reynolds Number." In ASME 2012 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/sbc2012-80280.
Повний текст джерелаFadlallah, Hadi, Hassan Peerhossaini, Christopher De Groot, and Mojtaba Jarrahi. "Motility Response to Hydrodynamic Stress During the Growth Cycle in Active Fluid Suspensions." In ASME 2020 Fluids Engineering Division Summer Meeting collocated with the ASME 2020 Heat Transfer Summer Conference and the ASME 2020 18th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/fedsm2020-20125.
Повний текст джерела"Motility and fitness of microorganisms in dynamic aquatic ecosystems: a simulation study." In Bioinformatics of Genome Regulation and Structure/ Systems Biology. institute of cytology and genetics siberian branch of the russian academy of science, Novosibirsk State University, 2020. http://dx.doi.org/10.18699/bgrs/sb-2020-100.
Повний текст джерелаIungin, Olga, Ievgeniia Prekrasna, Ihor Bortyanuy, Valeriia Maslak, and Saulius Mickevičius. "Plant Growth-Promoting Characteristics of Antarctic Endophytic Bacteria." In The 9th International Conference on Advanced Materials and Systems. INCDTP - Leather and Footwear Research Institute (ICPI), Bucharest, Romania, 2022. http://dx.doi.org/10.24264/icams-2022.ii.11.
Повний текст джерелаKizghin, Dilziba, Sangjin Ryu, Younggil Park, and Sunghwan Jung. "Swimming of the Trophont Zooid of Vorticella Convallaria." In ASME 2021 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/fedsm2021-63265.
Повний текст джерелаSamadi, Zahra, Malihe Mehdizadeh Allaf, Thomas Vourc'h, Christopher T. DeGroot, and Hassan Peerhossaini. "Are Active Fluids Age-Dependent?" In ASME 2022 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/fedsm2022-87914.
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