クラミドモナス、コナミドリムシ類、ラミドモナス属、コナミドリムシ属、Chlamydomonas属
WordNet
- type genus of the Chlamydomonadaceae; solitary doubly-flagellated plant-like algae common in fresh water and damp soil; multiply freely; often a pest around filtration plants (同)genus Chlamydomonas
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2013/03/02 11:33:36」(JST)
wiki en
English Journal
- Bioaccumulation of silver nanoparticles into Daphnia magna from a freshwater algal diet and the impact of phosphate availability.
- McTeer J, Dean AP, White KN, Pittman JK.Author information Faculty of Life Sciences, University of Manchester , Michael Smith Building, Oxford Road, Manchester M13 9PT , UK.AbstractThis study assessed the bioavailability, toxicity, and transfer of silver nanoparticles (AgNPs) in comparison with AgNO3 in two model food chain organisms: the alga Chlamydomonas reinhardtii and the grazing crustacean Daphnia magna. The effects of phosphate, a potential Ag(+)-binding ligand and a determinant of phytoplankton productivity, were evaluated. Nano Ag derived from coated AgNPs and AgNO3 was accumulated at similar concentrations into microalgae during high phosphate treatment, but AgNO3 accumulation was increased by low phosphate availability. After feeding on Ag-containing algae, D. magna equally accumulated AgNO3 and nano-derived Ag. There were significant reductions in feeding when D. magna were fed Ag-contaminated algae, with the AgNO3, low phosphate-exposed cells being ingested the least. Nutritional quality characteristics including fatty acid and trace nutrient content were similar in all algal samples, indicating that feeding reduction is specifically due to the presence of Ag, with AgNO3 being more toxic than nano Ag.
- Nanotoxicology.Nanotoxicology.2014 May;8(3):305-16. doi: 10.3109/17435390.2013.778346. Epub 2013 Mar 19.
- This study assessed the bioavailability, toxicity, and transfer of silver nanoparticles (AgNPs) in comparison with AgNO3 in two model food chain organisms: the alga Chlamydomonas reinhardtii and the grazing crustacean Daphnia magna. The effects of phosphate, a potential Ag(+)-binding ligand and a de
- PMID 23421707
- Stoichiometrically controlled production of bimetallic Gold-Silver alloy colloids using micro-alga cultures.
- Dahoumane SA1, Wijesekera K2, Filipe CD3, Brennan JD4.Author information 1Biointerfaces Institute, Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada.2Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada.3Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada. Electronic address: filipec@mcmaster.ca.4Biointerfaces Institute, Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada. Electronic address: brennanj@mcmaster.ca.AbstractThis paper reports the production of well-defined, highly stable Ag-Au alloy nanoparticles (NPs) using living cells of Chlamydomonas reinhardtii, with the composition of the bimetallic alloys being solely determined by the stoichiometric ratio in which the metal salts were added to the cultures. The NPs exhibited a single, well-defined surface plasmon resonance (SPR) band confirming that they were made of a homogeneous population of bimetallic alloys. Particle creation by the cells occurred in three stages: (1) internalization of the noble metals by the cells and their reduction resulting in the formation of the NPs; (2) entrapment of the NPs in the extracellular matrix (ECM) surrounding the cells, where they are colloidally stabilized; and (3) release of the NPs from the ECM to the culture medium. We also investigated the effect of the addition of the metals salts on cell viability and the impact on characteristics of the NPs formed. When silver was added to the cultures, cell viability was decreased and this resulted in a ∼30nm red shift on the SPR band due to changes in the surrounding environment into which the NPs were released. The same observations (in SPR and cell viability) was made when gold was added to a final concentration of 2×10(-4)M, but not when the concentration was equal to 10(-4)M, where cell viability was high and the red shift was negligible.
- Journal of colloid and interface science.J Colloid Interface Sci.2014 Feb 15;416:67-72. doi: 10.1016/j.jcis.2013.10.048. Epub 2013 Nov 7.
- This paper reports the production of well-defined, highly stable Ag-Au alloy nanoparticles (NPs) using living cells of Chlamydomonas reinhardtii, with the composition of the bimetallic alloys being solely determined by the stoichiometric ratio in which the metal salts were added to the cultures. The
- PMID 24370403
- CP12-mediated protection of Calvin-Benson cycle enzymes from oxidative stress.
- Marri L1, Thieulin-Pardo G2, Lebrun R3, Puppo R3, Zaffagnini M1, Trost P4, Gontero B5, Sparla F1.Author information 1Department of Pharmacy and Biotechnology, University of Bologna, Via Irnerio 42, 40126 Bologna, Italy.2Aix Marseille Université (AMU), CNRS, UMR 7281, BIP, 31 Chemin Joseph Aiguier, B.P. 71, 13402 Marseille Cedex 20, France.3Plate-forme Protéomique, Marseille Protéomique (MaP), Institut de Microbiologie de la Méditerranée, FR 3479, CNRS, 31 Chemin Joseph Aiguier, B.P. 71, 13402 Marseille Cedex 20, France.4Department of Pharmacy and Biotechnology, University of Bologna, Via Irnerio 42, 40126 Bologna, Italy. Electronic address: paolo.trost@unibo.it.5Aix Marseille Université (AMU), CNRS, UMR 7281, BIP, 31 Chemin Joseph Aiguier, B.P. 71, 13402 Marseille Cedex 20, France. Electronic address: bmeunier@imm.cnrs.fr.AbstractGlyceraldehyde-3-phosphate dehydrogenase (GAPDH) and phosphoribulokinase (PRK) are two energy-consuming enzymes of the Calvin-Benson cycle, whose regulation is crucial for the global balance of the photosynthetic process under different environmental conditions. In oxygen phototrophs, GAPDH and PRK regulation involves the redox-sensitive protein CP12. In the dark, oxidized chloroplast thioredoxins trigger the formation of a GAPDH/CP12/PRK complex in which both enzyme activities are down-regulated. In this report, we show that free GAPDH (A4-isoform) and PRK are also inhibited by oxidants like H2O2, GSSG and GSNO. Both in the land plant Arabidopsis thaliana and in the green microalga Chlamydomonas reinhardtii, both enzymes can be glutathionylated as shown by biotinylated-GSSG assay and MALDI-ToF mass spectrometry. CP12 is not glutathionylated but homodisulfides are formed upon oxidant treatments. In Arabidopsis but not in Chlamydomonas, the interaction between oxidized CP12 and GAPDH provides full protection from oxidative damage. In both organisms, preformed GAPDH/CP12/PRK complexes are protected from GSSG or GSNO oxidation, and in Arabidopsis also from H2O2 treatment. Overall, the results suggest that the role of CP12 in oxygen phototrophs needs to be extended beyond light/dark regulation, and include protection of enzymes belonging to Calvin-Benson cycle from oxidative stress.
- Biochimie.Biochimie.2014 Feb;97:228-37. doi: 10.1016/j.biochi.2013.10.018. Epub 2013 Nov 5.
- Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and phosphoribulokinase (PRK) are two energy-consuming enzymes of the Calvin-Benson cycle, whose regulation is crucial for the global balance of the photosynthetic process under different environmental conditions. In oxygen phototrophs, GAPDH and PRK
- PMID 24211189
- Lead (Pb) and copper (Cu) share a common uptake transporter in the unicellular alga Chlamydomonas reinhardtii.
- Sánchez-Marín P, Fortin C, Campbell PG.Author information Institut National de la Recherche Scientifique, Centre Eau Terre Environnement (INRS-ETE), 490 rue de la Couronne, Quebec, QC, G1K 9A9, Canada.AbstractThe unicellular alga Chlamydomonas reinhardtii has a very high rate of lead (Pb) internalization and is known to be highly sensitive to dissolved Pb. However, the transport pathway that this metal uses to cross cellular membranes in microalgae is still unknown. To identify the Pb(2+) transport pathway in C. reinhartdii, we performed several competition experiments with environmentally relevant concentrations of Pb(2+) (~10 nM) and a variety of divalent cations. Among the essential trace metals tested, cobalt, manganese, nickel and zinc had no effect on Pb internalization. A greater than tenfold increase in the concentrations of the major ions calcium and magnesium led to a slight decrease (~34 %) in short-term Pb internalization by the algae. Copper (Cu) was even more effective: at a Cu concentration 50 times higher than that of Pb, Pb internalization by the algae decreased by 87 %. Pre-exposure of the algae to Cu showed that the effect was not due to a physiological effect of Cu on the algae, but rather to competition for the same transporter. A reciprocal effect of Pb on Cu internalization was also observed. These results suggest that Cu and Pb share a common transport pathway in C. reinhardtii at environmentally relevant metal concentrations.
- Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine.Biometals.2014 Feb;27(1):173-81. doi: 10.1007/s10534-013-9699-y. Epub 2014 Jan 18.
- The unicellular alga Chlamydomonas reinhardtii has a very high rate of lead (Pb) internalization and is known to be highly sensitive to dissolved Pb. However, the transport pathway that this metal uses to cross cellular membranes in microalgae is still unknown. To identify the Pb(2+) transport pathw
- PMID 24442517
Japanese Journal
- Expression levels of domestic cDNA cassettes integrated in the nuclear genomes of various Chlamydomonas reinhardtii strains
- Kong Fantao,Yamasaki Tomohito,Ohama Takeshi
- Journal of bioscience and bioengineering 117(5), 613-616, 2014-05
- NAID 40020068693
- Isolation and characterization of novel high-CO2-requiring mutants of Chlamydomonas reinhardtii.
- Wang Lianyong,Yamano Takashi,Kajikawa Masataka,Hirono Masafumi,Fukuzawa Hideya
- Photosynthesis research, 2014-02-19
- … Although the molecular mechanism of the CCM has been investigated using the single-cell green alga Chlamydomonas reinhardtii, and several CCM-related genes have been identified by analyzing high-CO2 (HC)-requiring mutants, many aspects of the CO2-signal transduction pathways remain to be elucidated. …
- NAID 120005385881
- Isolation and characterization of mutants defective in the localization of LCIB, an essential factor for the carbon-concentrating mechanism in Chlamydomonas reinhardtii.
- Yamano Takashi,Asada Atsuko,Sato Emi,Fukuzawa Hideya
- Photosynthesis research, 2014-01-03
- … The unicellular green alga Chlamydomonas reinhardtii acclimates to low-CO2 (LC) conditions by actively transporting inorganic carbon (Ci) into the cell, resulting in an increase in photosynthetic efficiency. …
- NAID 120005385880
- HISN3 Mediates Adaptive Response of Chlamydomonas reinhardtii to Excess Nickel
- Zheng Qi,Cheng Zhen Zhen,Yang Zhi Min
- Plant and cell physiology 54(12), 1951-1962, 2013-12
- NAID 40019938221
Related Links
- Resources Jobs Educational Links Meetings Methods Newsgroup Archive A Gateway to Resources for Chlamydomonas Research This site provides access to genomic, genetic and bibliographic information on ...
- 1. Chlamydomonas monadina. 2. Chlamydomonas sp. 3. Chlamydomonas sp. 4. Chlamydomonas sp. 5. Chlamydomonas moewusii? 6. Chlamydomonas sp. 7. Chlamydomonas sp. 8. ... Type species: Chlamydomonas reinhardtii Dangeard 1888 [命名規約上は ...
- Images and taxonomic descriptions of Chlamydomonas (Volvocales, Chlorophyceae, Chloropphyta) ... Chlamydomonadales (Volvocales): Chlamydomonadaceae Volvocida: Chlamydomonadina: Chlamydomonadidae Chlamydomonas
Related Pictures
★リンクテーブル★
| リンク元 | 「クラミドモナス」「クラミドモナス属」「コナミドリムシ属」「コナミドリムシ類」 |
| 拡張検索 | 「Chlamydomonas属」「Chlamydomonas reinhardtii」 |