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  • 1
    Electronic Resource
    Electronic Resource
    Adenylate energy charge during the life cycle of Myxococcus coralloides D (1989)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 58 (1989), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract The adenylate energy charge of cells of Myoococcus coralloides D has been measured during the different stages of its life cycle. The energy charge of the vegetative cells (0.8) did not change significantly either during glycerol-induced myxospore formation, or during germination of these myxospores. Fruiting body myxospores had a relatively high energy charge (0.65). The adenylate energy charge decreased slightly (from 0.82 to 0.65) throughout fruiting body development and returned to values of vegetative cells in the early hours of germination of fruiting body myxospores. The levels of adenine nucleotide in myxospores in desiccation conditions were similar to those before desiccation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1989.tb03011.x
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  • 2
    Electronic Resource
    Electronic Resource
    Biological properties of the phage-tail-like particles from Myxococcus coralloides D (1987)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 48 (1987), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract Electron microscopy of preparations of the Myxocococcus coralloides D autolytic supernatants revealed the presence of phage-tail-like particles. The particles consisted of a core, a contractile sheath and a baseplate with fibers. The induction of the defective prophage occurred when the cultures reached the stationary phase, but the events occurring during induction did not lead to cell lysis. Particles nerver appeared during exponential growth. They were not observed when M. coralloides D grew on solid media, either. Purified samples of phage tails were able to inhibit most of the myxobacterial strains which were tested when the particles were in the extended state, but they were unable to multiply on the sensitive strains.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1987.tb02519.x
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  • 3
    Electronic Resource
    Electronic Resource
    Glutamate dehydrogenase isozymes of Chlamydomonas reinhardtii (1989)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 61 (1989), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract In Chlamydomonas reinhardtii there are three glutamate dehydrogenase isozymes which can use both NADH and NADPH as cofactors and respond differently to different nitrogen sources and several stress conditions. From data of induction of isozymes in different metabolic situations, we propose a possible physiological role for each of them in algal carbon and nitrogen metabolism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1989.tb03643.x
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  • 4
    Electronic Resource
    Electronic Resource
    Effect of Methionine Supplementation on Nitrogen Balance in Infants Fed a Low-Cost Soy-Oats Formula (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 50 (1985), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A nitrogen balance study, comparing a low-cost soy-oats infant formula with and without supplemental methionine, was carried out with infants of ages 3 - 26 months at a single equivalent level of nitrogen intake (approximately 850 mg/kg/day). Nitrogen retention was found to be unaffected by methionine supplementation. Com- parison of data obtained in this study with previous research re- vealed that a critical value for intake of total L-sulfur amino acids apparently exists in infants 3 - 26 months of age, below which methionine supplementation will increase nitrogen retention, but above which it will not. This value appears to coincide with that of 49 mg/kg/day recommended for infants by the FNB.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1985.tb13454.x
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  • 5
    Electronic Resource
    Electronic Resource
    Characterization of an l-aspartate aminotransferase activity in Chlamydomonas reinhardtii (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 74 (1988), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The isolation and characterization of an l-aspartate aminotransferase (AAT) activity (EC 2.6.1.1) in the unicellular green alga Chlamydomonas reinhardtii 6145c are reported for the first time. The enzyme transaminates aspartate with the 2-oxoglutarate-glutamate system, and exhibits maximum aminotransferase activity at pH 7.8 and 37°C. It has an Mr of 138 kDa, contains pyridoxal 5′-phosphate, and has a Km apparent for oxalacetate of 0.55 mM and exhibits positive co-operativity with l-aspartate with an S0.5 of 2.53 mM and a Hill coefficient of 1.57. In vivo, activity levels were affected by the carbon and nitrogen sources and by the change in the dark-light conditions. All these responses are interpreted in terms of a possible physiological regulation of AAT activity to keep the intracellular pools of glutamate and aspartate within margins compatible with environmental fluctuations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1988.tb01999.x
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  • 6
    Electronic Resource
    Electronic Resource
    Description of the Infraciliature and Morphogenesis in the Ciliate Urotricha ondina N. Sp. (Prorodontida, Urotrichidae) (1989)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 36 (1989), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Recent works on prostomatid ciliates show that some genera of this group have a differentiated oral infraciliature and that their stomatogenesis during division involves the proliferation of only a few somatic kineties. These findings have significant implications regarding the iaxonomic status of these genera and also on the terminology used for the oral structures. In Urotricha ondina, the oral infraciliature consists of (1) a paroral kinety formed of paired kinetosomes that encircle the cytostome at the anterior pole of the cell and (2) 3 adoral organelles, each formed of 2 rows of kinetosomes, ventral in position and obliquely disposed, lying above 3 short somatic kineties that do not reach the anterior pole of the cell. This oral ciliature —formerly known as the corona and brosse, respectively—originate during stomatogenesis from the proliferation of 4 somatic kineties that lie posterior to the adoral organelles of the parental cell.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1989.tb02719.x
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  • 7
    Electronic Resource
    Electronic Resource
    The Stomatogenic Process in Opercularia coarctata (Ciliophora, Peritrichida) (1988)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 35 (1988), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: . Stomatogenesis in Opercularia coarctata has been studied in specimens treated with Fernández-Galiano's silver impregnation method. The new buccal structures originate from the germinal row and from the parental haplokinety.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1988.tb04064.x
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  • 8
    Electronic Resource
    Electronic Resource
    Effect of atrazine and methabenzthiazuron on oxygen evolution and cell growth of Chlorella pyrenoidosa (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Weed research 25 (1985), S. 0 
    Details
    ISSN: 1365-3180
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Cultures of Chlorella pyrenoidosa Pringsheim were grown photoautotrophically in the presence of two concentrations (0·25 and 0·50 μm) of atrazine and methabenzthiazuron. The cell density and chlorophyll content were greatly reduced in presence of both herbicides. These herbicides affected net photsynthesis equally without affecting oxygen uptake. However, cell division was more inhibited by atrazine than by methabenzthiazuron, but chlorophyll content per cell was more inhibited by methabenzthiazuron than by atrazine.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3180.1985.tb00618.x
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  • 9
    Electronic Resource
    Electronic Resource
    DEVELOPMENT AND APPLICATION OF TEXTURE REFERENCE SCALES (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of sensory studies 1 (1986), S. 0 
    Details
    ISSN: 1745-459X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Standard texture rating scales of hardness, adhesiveness, fracturability, cohesiveness, and denseness were modified during the training of a Texture Profile panel. New reference materials were selected for each scale to better illustrate the texture characteristics and intensities and to account for previously recommended food products no longer available. In addition, new reference scales for wetness, adhesiveness to lips, roughness, self-adhesiveness, springiness, cohesiveness of mass, moisture absorption, adhesiveness to teeth, and manual adhesiveness were developed. The application of new texture reference scales reduced the variability among panelists and provided consistent judgments in texture evaluations. Expanded and improved definitions and evaluation procedures for texture attributes are presented. Also, special considerations for the use of reference scales in texture evaluations are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-459X.1986.tb00159.x
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  • 10
    Electronic Resource
    Electronic Resource
    Polyphosphate and orthophosphate content during the life cycle of Myxococcus coralloides D (1989)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 65 (1989), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract Pool changes in the orthophosphate and acid soluble and insoluble polyphosphates of Myxococcus coralloides D were determined during the different stages of its life cycle. The acid-insoluble fraction is the major fraction. Polyphosphate was synthesised during vegetative growth in a liquid medium and during aggregation and fruiting body maturation. During the induction and germination of myxospores both types of polyphosphate were depleted, the acid-insoluble fraction during the myxospore induction and the acid-soluble during germination. The orthophosphate pool remained constant or increased during growth in a liquid medium, increased during growth on solid media and myxospore induction and decreased during myxospore germination.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1989.tb03605.x
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