Relevant bibliographies by topics / Green Alga Bottryococcus braunii

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Academic literature on the topic 'Green Alga Bottryococcus braunii'

Author: Grafiati
Published: 6 September 2023

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Journal articles on the topic "Green Alga Bottryococcus braunii"

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YAMAGUCHI, Katsumi, Hiroshi NAKANO, Masahiro MURAKAMI, Shoji KONOSU, Osamu NAKAYAMA, Midori KANDA, Akihiro NAKAMURA, and Hiroaki IWAMOTO. "Lipid composition of a green alga, Botryococcus braunii." Agricultural and Biological Chemistry 51, no. 2 (1987): 493–98. http://dx.doi.org/10.1271/bbb1961.51.493.

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Yamaguchi, Katsumi, Hiroshi Nakano, Masahiro Murakami, Shoji Konosu, Osamu Nakayama, Midori Kanda, Akihiro Nakamura, and Hiroaki Iwamoto. "Lipid Composition of a Green Alga,Botryococcus braunii." Agricultural and Biological Chemistry 51, no. 2 (February 1987): 493–98. http://dx.doi.org/10.1080/00021369.1987.10868040.

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3

Bollman, R. C., and G. G. C. Robinson. "Heterotrophic potential of the green alga, Ankistrodesmus braunii (Naeg.)." Canadian Journal of Microbiology 31, no. 6 (June 1, 1985): 549–54. http://dx.doi.org/10.1139/m85-102.

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The green alga, Ankistrodesmus braunii (Naeg.), was found to possess a biphasic transport system for D-glucose. The high affinity component of the system had a Vmax of 1.2 × 10−7 pmol∙cell−1∙min−1 and a specific transport constant (Kt) of 7.7 nM glucose. The low-affinity component had a Vmax of 10.8 × 10−4 pmol∙cell−1∙min−1 at a Kt of 16.2 μM glucose. These kinetic values indicate that the alga could compete successfully with bacteria for glucose in natural waters. Ankistrodesmus braunii also grew heterotrophically on 0.1 mM glucose with a doubling time of 31.4 h. The growth rate was shown to correspond with the transport rate when an excretion rate of 3.5% and a respiration rate of 48% of the transported glucose were considered.
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4

Vazquez-Duhalt, Rafael, and Bertha O. Arredondo-Vega. "Haloadaptation of the green alga Botryococcus braunii (race a)." Phytochemistry 30, no. 9 (January 1991): 2919–25. http://dx.doi.org/10.1016/s0031-9422(00)98225-6.

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5

Metzger, P., E. Casadevall, and A. Coute. "Botryococcene distribution in strains of the green alga Botryococcus braunii." Phytochemistry 27, no. 5 (January 1988): 1383–88. http://dx.doi.org/10.1016/0031-9422(88)80199-7.

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Summons, RE, and RJ Capon. "Botryococcenone, an Oxygenated Botryococcene From Botryococcus braunii." Australian Journal of Chemistry 44, no. 2 (1991): 313. http://dx.doi.org/10.1071/ch9910313.

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A new botryococcene (5) incorporating an unprecedented ketone functionality has been identified in the lipid extract of an Australian collection of the green alga Botryococcus braunii Kutzing . The structure was established by detailed n.m.r. and mass spectroscopic analysis. A saturated hydrocarbon (8) prepared from this ketone by catalytic hydrogenation and Wolff-Kishner reduction has a different carbon skeleton to that of (9) prepared by hydrogenation of the co-occurring C33 botryococcene.
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7

van den Berg, Tomas E., Volha U. Chukhutsina, Herbert van Amerongen, Roberta Croce, and Bart van Oort. "Light Acclimation of the Colonial Green Alga Botryococcus braunii Strain Showa." Plant Physiology 179, no. 3 (January 16, 2019): 1132–43. http://dx.doi.org/10.1104/pp.18.01499.

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8

García-Fernández, J. M., A. López-Ruiz, J. Alhama, and J. Diez. "Light regulation of glutamine synthetase in the green alga Monoraphidium braunii." Journal of Plant Physiology 146, no. 5-6 (September 1995): 577–83. http://dx.doi.org/10.1016/s0176-1617(11)81917-6.

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9

Hirose, Mana, Fukiko Mukaida, Sigeru Okada, and Tetsuko Noguchi. "Active Hydrocarbon Biosynthesis and Accumulation in a Green Alga, Botryococcus braunii (Race A)." Eukaryotic Cell 12, no. 8 (June 21, 2013): 1132–41. http://dx.doi.org/10.1128/ec.00088-13.

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ABSTRACT Among oleaginous microalgae, the colonial green alga Botryococcus braunii accumulates especially large quantities of hydrocarbons. This accumulation may be achieved more by storage of lipids in the extracellular space rather than in the cytoplasm, as is the case for all other examined oleaginous microalgae. The stage of hydrocarbon synthesis during the cell cycle was determined by autoradiography. The cell cycle of B. braunii race A was synchronized by aminouracil treatment, and cells were taken at various stages in the cell cycle and cultured in a medium containing [ 14 C]acetate. Incorporation of 14 C into hydrocarbons was detected. The highest labeling occurred just after septum formation, when it was about 2.6 times the rate during interphase. Fluorescent and electron microscopy revealed that new lipid accumulation on the cell surface occurred during at least two different growth stages and sites of cells. Lipid bodies in the cytoplasm were not prominent in interphase cells. These lipid bodies then increased in number, size, and inclusions, reaching maximum values just before the first lipid accumulation on the cell surface at the cell apex. Most of them disappeared from the cytoplasm concomitant with the second new accumulation at the basolateral region, where extracellular lipids continuously accumulated. The rough endoplasmic reticulum near the plasma membrane is prominent in B. braunii , and the endoplasmic reticulum was often in contact with both a chloroplast and lipid bodies in cells with increasing numbers of lipid bodies. We discuss the transport pathway of precursors of extracellular hydrocarbons in race A.
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10

Wünschiers, Röbbe, Thomas Zinn, Dietmar Linder, and Rüdiger Schulz. "Purification and Characterization of Cytochrome c6 from the Unicellular Green Alga Scenedesmus obliquus." Zeitschrift für Naturforschung C 52, no. 11-12 (December 1, 1997): 740–46. http://dx.doi.org/10.1515/znc-1997-11-1204.

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Abstract Purification of a soluble cytochrome c6 from the unicellular green alga Scenedesmus obliquus by a simple and rapid method is described. The purification procedure includes ammonium sulfate precipitation and non-denaturating PAGE. The N-terminal sequence of the first 20 amino acids was determined and shows 85% similarity and 75% identity to the sequence of cytochrome c6 from the green alga Monoraphidium braunii. The ferrocyto-chrome shows typical UV/VIS absorption peaks at 552.9, 521.9 and 415.7 nm. The apparent molecular mass was estimated to be 12 kD a by SDS-PAGE. EPR-spectroscopy at 20K shows resonances indicative for two distinct low-spin heme forms.
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Dissertations / Theses on the topic "Green Alga Bottryococcus braunii"

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Molnar, Istvan, David Lopez, Jennifer Wisecaver, Timothy Devarenne, Taylor Weiss, Matteo Pellegrini, and Jeremiah Hackett. "Bio-crude transcriptomics: Gene discovery and metabolic network reconstruction for the biosynthesis of the terpenome of the hydrocarbon oil-producing green alga, Botryococcus braunii race B (Showa)*." BioMed Central, 2012. http://hdl.handle.net/10150/610020.

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BACKGROUND:Microalgae hold promise for yielding a biofuel feedstock that is sustainable, carbon-neutral, distributed, and only minimally disruptive for the production of food and feed by traditional agriculture. Amongst oleaginous eukaryotic algae, the B race of Botryococcus braunii is unique in that it produces large amounts of liquid hydrocarbons of terpenoid origin. These are comparable to fossil crude oil, and are sequestered outside the cells in a communal extracellular polymeric matrix material. Biosynthetic engineering of terpenoid bio-crude production requires identification of genes and reconstruction of metabolic pathways responsible for production of both hydrocarbons and other metabolites of the alga that compete for photosynthetic carbon and energy.RESULTS:A de novo assembly of 1,334,609 next-generation pyrosequencing reads form the Showa strain of the B race of B. braunii yielded a transcriptomic database of 46,422 contigs with an average length of 756 bp. Contigs were annotated with pathway, ontology, and protein domain identifiers. Manual curation allowed the reconstruction of pathways that produce terpenoid liquid hydrocarbons from primary metabolites, and pathways that divert photosynthetic carbon into tetraterpenoid carotenoids, diterpenoids, and the prenyl chains of meroterpenoid quinones and chlorophyll. Inventories of machine-assembled contigs are also presented for reconstructed pathways for the biosynthesis of competing storage compounds including triacylglycerol and starch. Regeneration of S-adenosylmethionine, and the extracellular localization of the hydrocarbon oils by active transport and possibly autophagy are also investigated.CONCLUSIONS:The construction of an annotated transcriptomic database, publicly available in a web-based data depository and annotation tool, provides a foundation for metabolic pathway and network reconstruction, and facilitates further omics studies in the absence of a genome sequence for the Showa strain of B. braunii, race B. Further, the transcriptome database empowers future biosynthetic engineering approaches for strain improvement and the transfer of desirable traits to heterologous hosts.
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Abitha, R. "Algiculture - A Novel Algae Cultivation Technique for Sustinable Algal Biofuel Production and Capture of Green House Gases." Thesis, 2016. http://etd.iisc.ac.in/handle/2005/4070.

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Algal biofuel has been shown to have great potential to solve the World’s sustainable energy crisis but technologies for large-scale cultivation are still elusive. While photobioreactors meet very high value algal products there is still no technology for producing algae by the millions of tons. Flooded paddy lands of India offer excellent opportunities for co-cultivation of algae with paddy crop provided it meets various sustainability criteria, not to mention very low cost options. This research examines sustainability, technology and climate change challenges to this above concept termed “Algiculture”. The potential of naturally emerging algal consortia to overcome travails of pure-culture, the ability to scavenge ‘lost’ plant nutrients in flooded paddy, overcome threats by grazers and predators, evolving naturally mediated techniques to harvest algae, impact on methane emissions, etc. were examined critically under laboratory and flooded paddy conditions. Experimental results indicate that many of the sustainability criteria can be met by growing algae simultaneously with a paddy crop for the first 60-75d which doubles the overall biomass yield from such lands. Algae raised can scavenge ammoniacal-N that generally occurs as unavoidable losses in flooded paddy system and can thus be raised without additional fertilizer inputs. This simultaneously ameliorates the N-pollution from paddy runoff to water bodies. Algal cultivation with paddy (Algiculture) alters micro-environmental conditions e.g. oxygen supersaturation, to make methane emissions unfavourable and by contrast algae even take up the C hitherto wasted away as methane and thereby converting an environmental liability to conservation. Consortia dominated by Chlorella and Chlorococcum sp. along with a small number of Cyanophycaeans facilitate simple low energy algal harvest techniques employing clumping and floc-formation that enables maintaining appropriate stocking density of algae and allowing continuous operation. The pattern of grazer /predator occurrence in such systems, techniques to minimize their influence by merely altering the cultivation conditions have been worked out and tested successful. The causes of reduction in methane emissions and C-source identification have been assessed with 13C discrimination studies. The research creates a new potential reducing GHG on the one hand for also raising sustainable bioenergy options in India as well as in all flooded paddy lands of the world
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Book chapters on the topic "Green Alga Bottryococcus braunii"

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De la Rosa, M. A., C. Frazão, C. M. Soares, M. A. Carrondo, E. Pohl, Z. Dauter, K. S. Wilson, M. Hervás, J. A. Navarro, and G. Sheldrick. "Crystal Structure of Cytochrome c 6 from the Green Alga Monoraphidium braunii. Comparison with Plastocyanin." In Photosynthesis: from Light to Biosphere, 1517–20. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-009-0173-5_356.

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