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  • 1
    ISSN: 1432-2145
    Keywords: Self-incompatibility ; S-locus genes ; Brassica napus ; Transgenic plants
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Self-compatible Brassica napus var ‘Westar’ was transformed with SLG, the S-locus-derived gene that encodes S-locus-specific glycoproteins (SLSG). Four allelic variants of SLG isolated from self-incompatible B. oleracea and B. campestris strains homozygous for different S alleles were used. We show that the transgenic plants synthesized SLSG with the same apparent charge, molecular weight, and antigenic properties as that produced by the corresponding self-incompatible strains from which the cloned SLG genes were isolated. In addition, transgene-encoded SLSG was detected specifically in the papillar cells of the stigma, and was correctly targeted to the papillar cell wall. However, SLSG was produced at reduced levels in transgenic plants relative to self-incompatible strains. The introduction of the SLG genes did not confer a self-incompatibility phenotype on the ‘Westar’ cultivar.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-2242
    Keywords: Brassica campestris ; B. oleracea ; Self-incompatibility ; SLG gene ; Transgenic plants
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary An SLG gene derived from the S-locus and encoding and S-locus-specific glycoprotein of Brassica campestris L. was introduced via Agrobacterium-mediated transformation into B. oleracea L. A self-incompatible hybrid and another with partial self-compatibility were used as recipients. The transgenic plants were altered in their pollen-stigma interaction and were fully compatible upon self-pollination. Reciprocal crosses between the transgenic plants and untransformed control plants indicated that the stigma reaction was changed in one recipient strain while the pollen reaction was altered in the other. Due to interspecific incompatibility, we could not demonstrate whether or not the introduced SLG gene confers a new allelic specificity in the transgenic plants. Our results show that the introduced SLG gene perturbs the self-incompatibility phenotype of stigma and pollen.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 4 (1972), S. 229-233 
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The thermal decomposition of 3-chloro-3-trichloromethyldizairine in carbon tetrachloride and iso-octane has been investigated over the temperature range 75-115°C. The products, tetrachloroethylene and nitrogen, are formed quantitatively by a first-order reaction which is probably unimolecular: The results yielded the following Arrhenius equations: \documentclass{article}\pagestyle{empty}\begin{document}$$\begin{array}{l} k({\rm CCl}_{\rm 4} {\rm)} = {\rm 10}^{{\rm 13}{\rm .8} \pm {\rm 0}{\rm .2}} \exp (- 29,200 \pm 200/RT)\sec ^{ - 1} \\ k(iso - {\rm octane)} = {\rm 10}^{{\rm 13}{\rm .8} \pm {\rm 0}{\rm .2}} \exp (- 29,000 \pm 150/RT)\sec ^{ - 1} \\ \end{array}$$\end{document}.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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