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  • Mutation
  • American Association for the Advancement of Science (AAAS)  (19)
  • Springer  (2)
  • 1980-1984  (21)
  • 1984  (21)
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (19)
  • Springer  (2)
Years
  • 1980-1984  (21)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Myo-inositol induced growth in ethyl methanesulphonate treated tobacco (1984)
    Springer
    Theoretical and applied genetics 67 (1984), S. 203-205 
    Details
    ISSN: 1432-2242
    Keywords: Ethyl methanesulphonate ; Mutation ; Myo-inositol ; Nicotiana tabacum, tobacco
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Tobacco seeds treated with ethyl methanesulphonate produces mutations as well as physiological growth debility. The addition of myo-inositol to seeds undergoing mutagenic treatment stimulated growth and increased survival of subsequent plants with negligible effect on the mutation frequency.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00317035
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Modification of symbiotic interaction of pea (Pisum sativum L.) andRhizobium leguminosarum by induced mutations (1984)
    Springer
    Plant and soil 82 (1984), S. 427-438 
    Details
    ISSN: 1573-5036
    Keywords: Mutant ; Mutation ; Nitrate ; Nitrate reductase ; Nodulation ; Pisum sativum L. ; Rhizobium leguminosarum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary In pea (Pisum sativum L.), mutants could be induced, modified in the symbiotic interaction withRhizobium leguminosarum. Among 250 M2-families, two nodulation resistant mutants (K5 and K9) were obtained. In mutant K5 the nodulation resistance was monogenic recessive and not Rhizobium strain specific. Out of 220 M2-families one mutant nod3 was found which could form nodules at high nitrate concentrations (15 mM KNO3). This mutant nodulated abundantly with severalRhizobium strains, both in the absence and presence of nitrate. Probably as the result of a pleiotropic effect, its root morphology was also changed. Among 1800 M2-families, five nitrate reductase deficient mutants were obtained and one of them (mutant E1) was used to study the inhibitory effect of nitrate on nodulation and nitrogen fixation. The results of the present investigation show that pea mutants which are modified in their symbiosis withRhizobium leguminosarum, can readily be obtained. The significance of such mutants for fundamental studies of the legume-Rhizobium symbiosis and for applications in plant breeding is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02184280
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  • 3
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    Regulation of a hybrid gene by glucose and temperature in hamster fibroblasts (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-10-12
    Description: A novel eukaryotic hybrid gene has been constructed from the 5' sequence of a rat gene and the bacterial neomycin-resistance gene. After transfection into hamster fibroblasts, the neo transcripts can be induced to high levels by the absence of glucose. Furthermore, this hybrid gene can be regulated by temperature when it is introduced into a temperature-sensitive mutant cell line.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Attenello, J W -- Lee, A S -- CA-27607/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1984 Oct 12;226(4671):187-90.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6484570" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Cricetinae ; DNA, Recombinant ; Drug Resistance, Microbial ; Fibroblasts ; *Gene Expression Regulation ; Genes, Bacterial ; *Genes, Regulator ; Glucose/*pharmacology ; *HSP70 Heat-Shock Proteins ; Membrane Proteins/biosynthesis/*genetics ; Mutation ; Neomycin/pharmacology ; Rats ; Temperature ; Transcription, Genetic ; Transfection
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
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    Reversal of knob formation on Plasmodium falciparum-infected erythrocytes (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-10-05
    Description: The human malarial parasite Plasmodium falciparum can produce surface protrusions (knobs) on infected erythrocytes; however, long-term culturing of the parasite results in the appearance of knobless cells. In this study it was found that a knob-producing clone lost the ability to produce knobs in vitro. Furthermore, a clone not producing knobs derived from the knob-producing clone regained the capacity to produce knobby cells in vitro. Certain parasite proteins were associated with the knobby phenotype but not with the knobless type. These results indicate that the parasites change in vitro in a spontaneous and reversible manner independent of immunological selection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gritzmacher, C A -- Reese, R T -- AI 18695/AI/NIAID NIH HHS/ -- DRR 00833/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1984 Oct 5;226(4670):65-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6382613" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Clone Cells ; Erythrocytes/*parasitology/ultrastructure ; Humans ; Mutation ; Phenotype ; Plasmodium falciparum/analysis/genetics/growth & development/*physiology ; Proteins/analysis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
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    Time-varying magnetic fields: effect on DNA synthesis (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-02-24
    Description: Human fibroblasts have exhibited enhanced DNA synthesis when exposed to sinusoidally varying magnetic fields for a wide range of frequencies (15 hertz to 4 kilohertz) and amplitudes (2.3 X 10(-6) to 5.6 X 10(-4) tesla). This effect, which is at maximum during the middle of the S phase of the cell cycle, appears to be independent of the time derivative of the magnetic field, suggesting an underlying mechanism other than Faraday's law. The threshold is estimated to be between 0.5 X 10(-5) and 2.5 X 10(-5) tesla per second. These results bring into question the allegedly specific magnetic wave shapes now used in therapeutic devices for bone nonunion. The range of magnetic field amplitudes tested encompass the geomagnetic field, suggesting the possibility of mutagenic interactions directly arising from short-term changes in the earth's field.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Liboff, A R -- Williams, T Jr -- Strong, D M -- Wistar, R Jr -- New York, N.Y. -- Science. 1984 Feb 24;223(4638):818-20.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6695183" target="_blank"〉PubMed〈/a〉
    Keywords: Cells, Cultured ; DNA/*biosynthesis ; Humans ; *Magnetics ; Mutation ; Periodicity
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 6
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    Transfection of the DNA polymerase-alpha gene (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-11-16
    Description: DNA polymerase-alpha is the major replicative DNA polymerase in animal cells. The gene coding for a mutant DNA polymerase-alpha was transferred from one cell to another by transfection of DNA from mutant cells. The DNA was isolated from a mutant hamster cell line resistant to aphidicolin, a specific inhibitor of DNA polymerase-alpha, and transferred into an aphidicolin-sensitive cell line. The resulting transfectants exhibited increased survival in the presence of aphidicolin and contained an aphidicolin-resistant DNA polymerase-alpha.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Liu, P K -- Loeb, L A -- CA07418/CA/NCI NIH HHS/ -- CA24845/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1984 Nov 16;226(4676):833-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6436977" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aphidicolin ; Cell Line ; Clone Cells ; Cricetinae ; Cricetulus/genetics ; DNA Polymerase II/*genetics ; Diterpenes/pharmacology ; Escherichia coli/genetics ; Humans ; Mice ; Mutation ; Salmon/genetics ; *Transfection
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 7
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    Homologous recombination catalyzed by mammalian cell extracts in vitro (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-12-07
    Description: An assay was developed to detect recombination events taking place in an in vitro reaction. Extracts of cultured mouse preB lymphocytes were found to catalyze homologous recombination between substrate DNA molecules but not site-specific recombination between cloned mouse immunoglobulin D and J genes. Addition of deoxyribonucleoside triphosphates increased the frequency of homologous recombination. This recombination activity was not observed in two differentiated lymphocyte cell lines.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Darby, V -- Blattner, F -- AI19325/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1984 Dec 7;226(4679):1213-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6334360" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; B-Lymphocytes ; Cells, Cultured ; Crossing Over, Genetic ; DNA, Viral ; Immunoglobulin Variable Region/genetics ; Mice ; Mutation ; Nucleoproteins/genetics ; *Recombination, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    A trans-acting product needed for P factor transposition in Drosophila (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-12-07
    Description: A transposable genetic element of the P family in Drosophila melanogaster was found to be unstable in the presence of other P elements but stable in their absence. A sensitive assay for P transpositional activity is provided by the snw allele, a defective P insert in the singed bristle locus which becomes hypermutable only in the presence of complete elements. This measure of activity was highly correlated with a type of female sterility normally associated with P activity. There was no cross-reactivity with transposase from another hybrid dysgenesis-causing element (the I factor).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Engels, W R -- GM30948/GM/NIGMS NIH HHS/ -- PCM8104332/PC/NCI NIH HHS/ -- New York, N.Y. -- Science. 1984 Dec 7;226(4679):1194-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6095450" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cross Reactions ; *DNA Transposable Elements ; Drosophila melanogaster/*genetics ; Female ; Gonadal Dysgenesis/genetics ; Infertility, Female/genetics ; Male ; Mutation
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Activation of a c-K-ras oncogene by somatic mutation in mouse lymphomas induced by gamma radiation (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-09-14
    Description: Mouse tumors induced by gamma radiation are a useful model system for oncogenesis. DNA from such tumors contains an activated K-ras oncogene that can transform NIH 3T3 cells. This report describes the cloning of a fragment of the mouse K-ras oncogene containing the first exon from both a transformant in rat-2 cells and the brain of the same mouse that developed the tumor. Hybrid constructs containing one of the two pieces were made and only the plasmid including the first exon from the transformant gave rise to foci in NIH 3T3 cells. There was only a single base difference (G----A) in the exonic sequence, which changed glycine to aspartic acid in the transformant. By use of a synthetic oligonucleotide the presence of the mutation was demonstrated in the original tumor, ruling out modifications during DNA-mediated gene transfer and indicating that the alteration was present in the thymic lymphoma but absent from other nonmalignant tissue. The results are compatible with gamma radiation being a source of point mutations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guerrero, I -- Villasante, A -- Corces, V -- Pellicer, A -- CA-36327/CA/NCI NIH HHS/ -- GM-32036/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1984 Sep 14;225(4667):1159-62.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6474169" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Transformation, Neoplastic ; Cells, Cultured ; Cloning, Molecular ; Gamma Rays ; Lymphoma/*genetics ; Mice ; Mutation ; Neoplasms, Radiation-Induced/*genetics ; Nucleic Acid Hybridization ; *Oncogenes ; Rats
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 10
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    DNA markers for nervous system diseases (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-09-21
    Description: Recombinant DNA technology has provided a vast new source of DNA markers displaying heritable sequence variation in humans. These markers can be used in family studies to identify the chromosomal location of defective genes causing nervous system disorders. The discovery of a DNA marker linked to Huntington's disease has opened new avenues of research into this disorder and may ultimately permit cloning and characterization of the defective gene.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gusella, J F -- Tanzi, R E -- Anderson, M A -- Hobbs, W -- Gibbons, K -- Raschtchian, R -- Gilliam, T C -- Wallace, M R -- Wexler, N S -- Conneally, P M -- NS16367/NS/NINDS NIH HHS/ -- NS20012/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1984 Sep 21;225(4668):1320-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6089346" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Base Sequence ; Chromosome Mapping ; Cloning, Molecular ; DNA/*genetics ; DNA Restriction Enzymes ; *DNA, Recombinant ; Female ; *Genes ; *Genetic Linkage ; *Genetic Markers ; Genetic Vectors ; Humans ; Huntington Disease/*genetics ; Male ; Mutation ; Pedigree ; Phenotype ; Polymorphism, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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