Academic literature on the topic 'Photoheterotroph'

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Journal articles on the topic "Photoheterotroph"

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Michelou, Vanessa K., Matthew T. Cottrell, and David L. Kirchman. "Light-Stimulated Bacterial Production and Amino Acid Assimilation by Cyanobacteria and Other Microbes in the North Atlantic Ocean." Applied and Environmental Microbiology 73, no. 17 (2007): 5539–46. http://dx.doi.org/10.1128/aem.00212-07.

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ABSTRACT We examined the contribution of photoheterotrophic microbes—those capable of light-mediated assimilation of organic compounds—to bacterial production and amino acid assimilation along a transect from Florida to Iceland from 28 May to 9 July 2005. Bacterial production (leucine incorporation at a 20 nM final concentration) was on average 30% higher in light than in dark-incubated samples, but the effect varied greatly (3% to 60%). To further characterize this light effect, we examined the abundance of potential photoheterotrophs and measured their contribution to bacterial production an
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Stebegg, Ronald, Georg Schmetterer, and Annette Rompel. "Photoheterotrophic growth of unicellular cyanobacterium Synechocystis sp. PCC 6803 gtr− dependent on fructose." Monatshefte für Chemie - Chemical Monthly 150, no. 10 (2019): 1863–68. http://dx.doi.org/10.1007/s00706-019-02484-6.

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Abstract Although cyanobacteria have specialized for a photolithoautotrophic mode of life during evolution many cyanobacterial strains have been identified as being capable of photoheterotrophy or even chemoheterotrophy. The mutant strain of Synechocystis sp. PCC 6803, which lacks the gtr gene coding for the strain’s glucose/fructose permease, has been believed to be a strict photolithoautotroph in the past as it has lost the wild type’s facility to use external glucose for both photoheterotrophy and light-induced chemoheterotrophy. However, recent experiments revealed the strain’s capacity to
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FUKUMORI, Yoshihiro, Kazuya WATANABE, and Tateo YAMANAKA. "Cytochrome aa3 from the Aerobic Photoheterotroph Erythrobacter longus: Purification, and Enzymatic and Molecular Features1." Journal of Biochemistry 102, no. 4 (1987): 777–84. http://dx.doi.org/10.1093/oxfordjournals.jbchem.a122115.

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Garcia Costas, Amaya M., Zhenfeng Liu, Lynn P. Tomsho, Stephan C. Schuster, David M. Ward, and Donald A. Bryant. "Complete genome of Candidatus Chloracidobacterium thermophilum, a chlorophyll-based photoheterotroph belonging to the phylum Acidobacteria." Environmental Microbiology 14, no. 1 (2011): 177–90. http://dx.doi.org/10.1111/j.1462-2920.2011.02592.x.

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Vermaas, Wim, Jeroen Charité, and Gaozhong Shen. "Q a Binding to D2 Contributes to the Functional and Structural Integrity of Photosystem II." Zeitschrift für Naturforschung C 45, no. 5 (1990): 359–65. http://dx.doi.org/10.1515/znc-1990-0509.

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Two D2 mutants were created with a site-directed mutation near the presumable binding site of QA. In one of the mutants, in which Trp-253, the aromatic residue potentially involved in facilitating electron transport from pheophytin to QA and/or in binding of Q A, had been replaced by Leu, PS II was undetectable in thylakoids. This mutant is an obligate photoheterotroph. In another mutant the Gly-215 residue, located next to the His residue that is proposed to bind QA and Fe2+, was mutated to Trp. This mutation leads to a rapid inactivation of oxygen evolution capacity in the light, and to a vi
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Cottrell, Matthew T., and David L. Kirchman. "Photoheterotrophic Microbes in the Arctic Ocean in Summer and Winter." Applied and Environmental Microbiology 75, no. 15 (2009): 4958–66. http://dx.doi.org/10.1128/aem.00117-09.

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ABSTRACT Photoheterotrophic microbes, which are capable of utilizing dissolved organic materials and harvesting light energy, include coccoid cyanobacteria (Synechococcus and Prochlorococcus), aerobic anoxygenic phototrophic (AAP) bacteria, and proteorhodopsin (PR)-containing bacteria. Our knowledge of photoheterotrophic microbes is largely incomplete, especially for high-latitude waters such as the Arctic Ocean, where photoheterotrophs may have special ecological relationships and distinct biogeochemical impacts due to extremes in day length and seasonal ice cover. These microbes were examine
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Krasnopeev A.Yu., A. Yu, I. V. Tikhonova I.V., G. V. Podlesnaya G.V., et al. "Bacterial diversity and metabolism in microbial consortium of non-axenic culture Tychonema sp. BBK16." Limnology and Freshwater Biology, no. 6 (2023): 229–43. http://dx.doi.org/10.31951/2658-3518-2023-a-6-229.

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We performed high-throughput sequencing of microbial community with cyanobacterium Tychonema sp. BBK16 and heterotrophic bacteria in vitro. Representatives of the phylum Pseudomonadota/Proteobacteria, the bacteria Hydrogenophaga, Sphingomonas, Paucibacter, Aminobacter, Devosia, Tahibacter, and Bosea dominate and coexist with the cyanobacterium for a long period of cultivation. It was found that this cyanobacterium is an edificator of this community providing the microbiome with organic matter. Metabolic features of heterotrophic bacteria based on reconstructed genomes are presented. The main p
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Kopejtka, Karel, Yonghui Zeng, David Kaftan, et al. "Characterization of the Aerobic Anoxygenic Phototrophic Bacterium Sphingomonas sp. AAP5." Microorganisms 9, no. 4 (2021): 768. http://dx.doi.org/10.3390/microorganisms9040768.

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An aerobic, yellow-pigmented, bacteriochlorophyll a-producing strain, designated AAP5 (=DSM 111157=CCUG 74776), was isolated from the alpine lake Gossenköllesee located in the Tyrolean Alps, Austria. Here, we report its description and polyphasic characterization. Phylogenetic analysis of the 16S rRNA gene showed that strain AAP5 belongs to the bacterial genus Sphingomonas and has the highest pairwise 16S rRNA gene sequence similarity with Sphingomonas glacialis (98.3%), Sphingomonas psychrolutea (96.8%), and Sphingomonas melonis (96.5%). Its genomic DNA G + C content is 65.9%. Further, in sil
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Piwosz, Kasia, Cristian Villena-Alemany, and Izabela Mujakić. "Photoheterotrophy by aerobic anoxygenic bacteria modulates carbon fluxes in a freshwater lake." ISME Journal 16, no. 4 (2021): 1046–54. http://dx.doi.org/10.1038/s41396-021-01142-2.

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AbstractLakes are a significant component of the global carbon cycle. Respiration exceeds net primary production in most freshwater lakes, making them a source of CO2 to the atmosphere. Driven by heterotrophic microorganisms, respiration is assumed to be unaffected by light, thus it is measured in the dark. However, photoheterotrophs, such as aerobic anoxygenic photoheterotrophic (AAP) bacteria that produce ATP via photochemical reactions, substantially reduce respiration in the light. They are an abundant and active component of bacterioplankton, but their photoheterotrophic contribution to m
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Krooneman, Janneke, Sytske van den Akker, Teresa M. Pedro Gomes, Larry J. Forney, and Jan C. Gottschal. "Degradation of 3-Chlorobenzoate under Low-Oxygen Conditions in Pure and Mixed Cultures of the Anoxygenic Photoheterotroph Rhodopseudomonas palustris DCP3 and an Aerobic Alcaligenes Species." Applied and Environmental Microbiology 65, no. 1 (1999): 131–37. http://dx.doi.org/10.1128/aem.65.1.131-137.1999.

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ABSTRACT The presence or absence of molecular oxygen has been shown to play a crucial role in the degradability of haloaromatic compounds. In the present study, it was shown that anaerobic phototrophic 3-chlorobenzoate (3CBA) metabolism by Rhodopseudomonas palustris DCP3 is oxygen tolerant up to a concentration of 3 μM O2. Simultaneous oxidation of an additional carbon source permitted light-dependent anaerobic 3CBA degradation at oxygen input levels which, in the absence of such an additional compound, would result in inhibition of light-dependent dehalogenation. Experiments under the same ex
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Dissertations / Theses on the topic "Photoheterotroph"

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Regnault, Annie. "Effets de contraintes trophiques : manque ou exces en phosphate d'ammonium chez euglena gracilis cultivee en photoheterotrophie." Paris 7, 1991. http://www.theses.fr/1991PA077197.

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Des euglenes photoheterotrophes sont adaptees a differentes concentrations en phosphate d'ammonium: 0,125; 0,5; 1,5 g/l. Quatre conditions metaboliques ont ete definies: photoheterotrophie sans limitation nutritive; photoheterotrophie limitee en azote; autotrophie limitee ou non en azote. En photoheterotrophie sans limitation le developpement des plastes et leur structure dependent peu de la concentration en azote du milieu. L'intensite de la photosynthese determine la teneur cellulaire en paramylon. Le passage de ce type metabolique aux autres types est marque par une grande variation dans le
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Bill, Nelli [Verfasser], Dietmar [Akademischer Betreuer] Schomburg, and Dieter [Akademischer Betreuer] Jahn. "Special metabolic properties of the marine photoheterotrophic bacterium Dinoroseobacter shibae DFL 12T / Nelli Bill ; Dietmar Schomburg, Dieter Jahn." Braunschweig : Technische Universität Braunschweig, 2020. http://d-nb.info/1213023513/34.

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Tomasch, Jürgen Martin [Verfasser], and Irene [Akademischer Betreuer] Wagner-Döbler. "Experimentelle und bioinformatische Analyse der aeroben anoxygenen Photosynthese in dem photoheterotrophen Meeresbakterium Dinoroseobacter shibae DFL12 / Jürgen Martin Tomasch ; Betreuer: Irene Wagner-Döbler." Braunschweig : Technische Universität Braunschweig, 2011. http://d-nb.info/117589107X/34.

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Bunse, Carina. "Bacterioplankton in the light of seasonality and environmental drivers." Doctoral thesis, Linnéuniversitetet, Institutionen för biologi och miljö (BOM), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-69130.

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Bacterioplankton are keystone organisms in marine ecosystems. They are important for element cycles, by transforming dissolved organic carbon and other nutrients. Bacterioplankton community composition and productivity rates change in surface waters over spatial and temporal scales. Yet, many underlying biological processes determining when, why and how bacterioplankton react to changes in environmental conditions are poorly understood. Here, I used experiments with model bacteria and natural assemblages as well as field studies to determine molecular, physiological and ecological responses al
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Ríos, Alcaraz Francisco Abraham. "Obtenção de consórcio de bactérias fotoheterotróficas geradoras de H2 visando sua produção em reator anaeróbio em batelada /." Araraquara, 2016. http://hdl.handle.net/11449/138030.

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Orientador: Sandra Imaculada Maintinguer<br>Resumo: A bioconversão de diferentes materiais orgânicos em hidrogênio é uma tecnologia sustentável. Inóculos de climas tropicais, como o Brasil, com temperaturas médias de 25°C podem favorecer o crescimento bacteriano. A geração de hidrogênio com consórcios bacterianos têm vantagens sobre culturas puras quanto aplicado no tratamento de águas residuárias. O hidrogênio pode ser gerado em duas fases durante os processos anaeróbios. Em primeiro lugar, hidrogênio e ácidos orgânicos podem ser produzidos por processos fermentativos. Esses ácidos gerados po
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Book chapters on the topic "Photoheterotroph"

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Gallon, J. R., M. A. Hashem, O. A. Al-Amoudi, and K. J. Flynn. "Photoautotrophic and Photoheterotrophic N2 Fixation in Oscillatoria Spp Exposed to Alternating Light and Darkness." In Nitrogen Fixation. Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3486-6_108.

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Ziegler, Paul, and Anthony R. Ashton. "Effect of the Photosynthetic Herbicides DCMU and Atrazine on the Growth of Photoautotrophic and Photoheterotrophic Cell Suspension Cultures of Chenopodium Rubrum." In Progress in Photosynthesis Research. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-017-0516-5_169.

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"photoheterotroph, n." In Oxford English Dictionary, 3rd ed. Oxford University Press, 2023. http://dx.doi.org/10.1093/oed/6628144129.

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"photoheterotrophy, n." In Oxford English Dictionary, 3rd ed. Oxford University Press, 2023. http://dx.doi.org/10.1093/oed/1001669539.

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"photoheterotrophic, adj." In Oxford English Dictionary, 3rd ed. Oxford University Press, 2023. http://dx.doi.org/10.1093/oed/1011593877.

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Wood, B. J. B., P. H. K. Grimson, J. B. German, and M. Turner. "Photoheterotrophy in the production of phytoplankton organisms." In Progress in Industrial Microbiology. Elsevier, 1999. http://dx.doi.org/10.1016/s0079-6352(99)80110-6.

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Hamasaki, K., Y. Sato-Takabe, A. Taniguchi, and Y. Tada. "Photoheterotrophic Process in Surface Seawater Environments." In Western Pacific Air-Sea Interaction Study. TERRAPUB, 2014. http://dx.doi.org/10.5047/w-pass.a03.003.

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Conference papers on the topic "Photoheterotroph"

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Albiol, Joan, Blandine Gicqueau, and Christophe Lasseur. "Preliminary Studies on the Performance and Behaviour of the MELISSA Photoheterotrophic Compartment." In International Conference On Environmental Systems. SAE International, 1994. http://dx.doi.org/10.4271/941410.

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Reports on the topic "Photoheterotroph"

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Royer, David. Final Report - Cycling of DOC and DON by novel heterotrophic and photoheterotrophic bacteria in the ocean. Office of Scientific and Technical Information (OSTI), 2011. http://dx.doi.org/10.2172/1015973.

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Kirchman, David L. Cycling of DOC and DON by Novel Heterotrophic and Photoheterotrophic Bacteria in the Ocean: Final Report. Office of Scientific and Technical Information (OSTI), 2008. http://dx.doi.org/10.2172/943554.

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