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  • Salt tolerance  (2)
  • superoxide dismutase  (2)
  • Chemistry
  • F22
  • Life and Medical Sciences
  • Receptors, Cell Surface
  • Springer  (4)
  • 1995-1999  (4)
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Keywords
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  • 1995-1999  (4)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Novel mutations in an otherwise strictly conserved domain of CuZn superoxide dismutase (1997)
    Springer
    Molecular and cellular biochemistry 168 (1997), S. 191-194 
    Details
    ISSN: 1573-4919
    Keywords: superoxide dismutase ; amyotrophic lateral sclerosis ; mutation ; zinc binding ; allele ; exon III
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract All mutations in the human gene for CuZn superoxide dismutase (CuZnSOD) reported to date are associated with the disease amyotrophic lateral sclerosis (ALS). These mutations, mostly of a familial nature (ALS 1, MIM 105400), span all of the coding region of this enzyme except for a highly conserved centrally located domain that includes all of exon III. We describe the identification and characterization of two mutations in this region, both found in mice. One mutation, a glutamate to lysine amino acid substitution was found in position 77 (E77K) of the strain SOD1/Ei distributed by the Jackson Laboratory. The other mutation, a lysine to glutamate substitution at position 70 (K70E) of a human transgene, was discovered in mouse line TgHS/SF-155. Enzyme activity measurements and heterodimer analysis of the CuZn SOD variant in SOD1/Ei suggest a mild loss of activity, which differs from the enzyme activity losses detected in patients with autosomal dominant ALS 1. Similarly, the presence of the mutant transgene in TgHS/SF 155 does not produce any phenotypic manifestations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006871524623
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  • 2
    Electronic Resource
    Electronic Resource
    Mapping of the K+/Na+ discrimination locus Kna1 in wheat (1996)
    Springer
    Theoretical and applied genetics 92 (1996), S. 448-454 
    Details
    ISSN: 1432-2242
    Keywords: Key words  Wheat ; Salt tolerance ; Homoeologous recombination ; QTL ; RFLP ; Genetic marker
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract   In saline environments, bread wheat, Triticum aestivum L. (genomes AABBDD), accumulates less Na+ and more K+ in expanding and young leaves than durum wheat, T. turgidum L. (genomes AABB). Higher K+/Na+ ratios in leaves of bread wheat correlate with its higher salt tolerance. Chromosome 4D from bread wheat was shown in previous work to play an important role in the control of this trait and was recombined with chromosome 4B in the absence of the Ph1 locus. A population of plants disomic for 4D/4B recombined chromosomes in the genetic background of T. turgidum was developed to investigate the genetic control of K+/Na+ discrimination by chromosome 4D. Evidence was obtained that the trait is controlled by a single locus, designated Kna1, in the long arm of chromosome 4D. In the present work, K+/Na+ discrimination was determined for additional families with 4D/4B chromosomes. The concentrations of Na+ and K+/Na+ ratios in the youngest leaf blades clustered in two nonoverlapping classes, and all recombinant families could be unequivocally assigned to Kna1 and kna1 classes. The Kna1 locus scored this way was mapped on a short region in the 4DL arm and was completely linked to Xwg199, Xabc305, Xbcd402, Xpsr567, and Xpsr375; it was also mapped as a quantitative trait. The results of the QTL analysis, based on the K+/Na+ ratios in the young leaves of greenhouse-grown plants and flag leaves of field-grown plants, agreed with the position of Kna1 determined as a qualitative trait. Several aspects of gene introgression by manipulation of the Ph1 locus are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220050148
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  • 3
    Electronic Resource
    Electronic Resource
    Mapping of the K+/Na+ discrimination locus Kna1 in wheat (1996)
    Springer
    Theoretical and applied genetics 92 (1996), S. 448-454 
    Details
    ISSN: 1432-2242
    Keywords: Wheat ; Salt tolerance ; Homoeologous recombination ; QTL ; RFLP ; Genetic marker
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In saline environments, bread wheat, Triticum aestivum L. (genomes AABBDD), accumulates less Na+ and more K+ in expanding and young leaves than durum wheat, T. turgidum L. (genomes AABB). Higher K+/Na+ ratios in leaves of bread wheat correlate with its higher salt tolerance. Chromosome 4D from bread wheat was shown in previous work to play an important role in the control of this trait and was recombined with chromosome 4B in the absence of the Ph1 locus. A population of plants disomic for 4D/4B recombined chromosomes in the genetic background of T. turgidum was developed to investigate the genetic control of K+/Na+ discrimination by chromosome 4D. Evidence was obtained that the trait is controlled by a single locus, designated Kna1, in the long arm of chromosome 4D. In the present work, K+/Na+ discrimination was determined for additional families with 4D/4B chromosomes. The concentrations of Na+ and K+/Na+ ratios in the youngest leaf blades clustered in two nonoverlapping classes, and all recombinant families could be unequivocally assigned to Kna1 and kna1 classes. The Kna1 locus scored this way was mapped on a short region in the 4DL arm and was completely linked to Xwg199, Xabc305, Xbcd.402, Xpsr567, and Xpsr375; it was also mapped as a quantitative trait. The results of the QTL analysis, based on the K+/Na+ ratios in the young leaves of greenhousegrown plants and flag leaves of field-grown plants, agreed with the position of Knal determined as a qualitative trait. Several aspects of gene introgression by manipulation of the Ph1 locus are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00223692
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  • 4
    Electronic Resource
    Electronic Resource
    Role of Superoxide Dismutase in Ischemic Brain Injury: A Study Using SOD-1 Transgenic Mice (1998)
    Springer
    Cellular and molecular neurobiology 18 (1998), S. 609-620 
    Details
    ISSN: 1573-6830
    Keywords: ischemic brain injury ; superoxide dismutase ; SOD-1 transgenic mice ; nitric oxide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract 1. Nitric oxide radicals (NO) play an important role in the pathophysiology of focal cerebral ischemia. 2. Vascular NO can reduce ischemic brain injury by increasing CBF, whereas neuronal NO may mediate neurotoxicity following brain ischemia, mainly by its reaction with superoxide to generate peroxynitrite. 3. These findings could contribute to a strategy for the treatment of cerebral ischemia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1020677701368
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