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  • 1
    Electronic Resource
    Electronic Resource
    A receptor protein from a host plant,Trigonella foenum-graecum, which binds toRhizobium meliloti strains (1983)
    Springer
    Cellular and molecular life sciences 39 (1983), S. 509-510 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The correlation between release of receptor protein from germinating seeds, competence factor released byRhizobium and nodulation indicates that the period of strongest interaction lies between the 3rd and the 4th day.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01965179
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  • 2
    Electronic Resource
    Electronic Resource
    Degradation of chlorobenzoates byAspergillus niger (1984)
    Springer
    Cellular and molecular life sciences 40 (1984), S. 406-407 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary InA. niger, the degradation of chlorobenzoates follows the protocatechuate branch of ß-ketoadipate pathway and the elimination of chloride takes place in the first hydroxylation step prior to ring cleavage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01952577
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  • 3
    Electronic Resource
    Electronic Resource
    Effect of ammonium ions on the growth ofAspergillus nidulans (1970)
    Springer
    Cellular and molecular life sciences 26 (1970), S. 590-591 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung In einer Biotin-Mangelmutante vonAspergillus nidulans wurde, verglichen mit dem der Normalkultur, ein grösserer Ammonium-Verbrauch gefunden. Dies scheint seine Ursache in der Veränderung der Permeabilität der Zellwand zu haben, deren Lipoidgehalt um 40% niedriger ist. Eine Zunahme der Transaminasen (GOT, GPT) und Glutamindehydrogenase könnte für eine höhere Proteinsynthese in Mangelstamm verantwortlich sein.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01898703
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  • 4
    Electronic Resource
    Electronic Resource
    The regulation of some enzymes involved in ammonia assimilation byRhizobium meliloti (1981)
    Springer
    Cellular and molecular life sciences 37 (1981), S. 121-122 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The activities of glutamate dehydrogenase, glutamine synthetase and glutamate synthase were influenced by nitrogen and carbon sources in the culture medium. These changes were accompanied by corresponding changes in the substrate affinities. In succinate grown culture, the regulation of these enzymes may be mediated through the intracellular levels of ammonia and α-ketoglutarate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01963181
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  • 5
    Electronic Resource
    Electronic Resource
    Partial purification of a competence factor from Rhizobium japonicum (1978)
    Springer
    Archives of microbiology 118 (1978), S. 253-256 
    Details
    ISSN: 1432-072X
    Keywords: Rhizobium japonicun ; Competence ; Competence factor ; Genetic transformation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A competence factor (CF) from Rhizobium japonicum was partially purified to 43 fold on Sephadex G-100. This CF preparation was sensitive to heat, trypsin and pronase, was resistant to DNase 1, RNase A and lysozyme. It had an approximate mol. wt. of 82,000. Osmotic shock treatment of competent cells revealed that the CF is located in the periplasmic region of the cell.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00429114
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  • 6
    Electronic Resource
    Electronic Resource
    Stimulation of growth and glucose catabolite enzymes by succinate in some thermophilic fungi (1978)
    Springer
    Archives of microbiology 118 (1978), S. 49-53 
    Details
    ISSN: 1432-072X
    Keywords: Thermophilic fungi ; Temperature ; Growth ; Succinate requirement ; Catabolite repression ; Enzymes ; Protein turnover-derepression
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Thermophilic Humicola lanuginosa, Penicillium duponti, Sporotrichum thermophile and Mucor pusillus required succinate in addition to glucose for optimal growth. The requirement for succinate was concentration-dependent and the concentration needed for one half of the maximal growth was 6.14 mM. In the presence of succinate, glucose utilization from the medium was markedly increased and this was associated with increased levels of the enzymes of the glycolytic and Krebs cycle pathways. Addition of succinate to cultures growing in glucose at any stage of growth stimulated the growth with the resulting rate of growth remaining high if the addition was made within 3 days of inoculation. Cycloheximide (71.4 μM) prevented the succinate-mediated derepression of the enzymes suggesting that succinate may remove the catabolite repression in the presence of glucose.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00406073
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  • 7
    Electronic Resource
    Electronic Resource
    Isolation and characterisation of catechol-like siderophore from cowpea Rhizobium RA-1 (1985)
    Springer
    Archives of microbiology 141 (1985), S. 156-158 
    Details
    ISSN: 1432-072X
    Keywords: Cowpea Rhizobium ; Catechol-like siderophore ; Iron transport
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Cowpea Rhizobium RA-1 produced a catechol-like siderophore. Secondary hydroxamic acids were not detected. Bioassay of the siderophore exhibited a distinct zone of growth of cowpea rhizobia. One litre of culture filtrate gave 6.2 mg of catechol-like siderophore. Glycine and threonine were detected in the siderophore. Maximum production of siderophore was found at 36 h of growth of cowpea Rhizobium RA-1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00423277
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  • 8
    Electronic Resource
    Electronic Resource
    Studies on polyol metabolism in Aspergillus niger (1969)
    Springer
    Archives of microbiology 67 (1969), S. 6-11 
    Details
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A strain of A. niger, adapted to grow on sorbitol is cultivated on a medium containing sorbitol as the sole carbon source. Nutritional requirements of the adapted strain are studied. The optimum growth was observed at 30±2°C in a medium containing per litre 2 g Ammonium nitrate, 0.2 g Magnesium sulfate, 0.75 g Potassium dihydrogen orthophosphate and 60 g sorbitol, having pH 2.0. Ammonium nitrate was found to be the best source of nitrogen. The maximum growth was observed on 6th day of cultivation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00413675
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  • 9
    Electronic Resource
    Electronic Resource
    Studies on gluconate metabolism in Aspergillus niger (1969)
    Springer
    Archives of microbiology 66 (1969), S. 389-395 
    Details
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A strain of Aspergillus niger adapted to grow on gluconate is cultivated on a medium containing gluconic acid lactone as the sole carbon source. Nutritional requirements of the adapted mold were studied. The organism shows optimum growth at 30° C in a medium containing per litre 20 g of gluconic acid lactone, 800 mg of NH4NO3, 100 mg of MgSO4, 7 H2O and 270 mg of KH2PO4 having pH 2.0. Mycelial growth reaches its maximum on the third day. Comparative growth responses of the adapted and parent strains on gluconate, glucose and sucrose were studied.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00414593
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  • 10
    Electronic Resource
    Electronic Resource
    Studies on gluconate metabolism in Aspergillus niger (1969)
    Springer
    Archives of microbiology 66 (1969), S. 396-405 
    Details
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A citric acid accumulating strain of Aspergillus niger adapted to grow on gluconic acid lactone as sole carbon source was studied with regards to the enzymatic changes occurring during its adaptive growth and compared with those of the parent strain cultivated on sucrose. Glucose oxidase, glucose dehydrogenase, gluconate dehydrogenase and enzymes of Entner Doudoroff pathway could not be detected in the strain. Gluconokinase was detected in the strain and its inducible nature was established. An adaptive increase of gluconokinase, phosphogluconate dehydrogenase and ribose phosphate isomerase was observed. While the levels of the above enzymes were significantly higher, that of glucose 6-phosphate dehydrogenase were significantly low indicating the repression of the enzyme. Levels of hexokinase and fructose diphosphate aldolase remained more or less the same as that of parent strain. It was inferred from the results that gluconate metabolism occurs via the pentose phosphate pathway following initial phosphorylation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00414594
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