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  • 1985-1989  (3)
  • Brassica  (2)
  • Bipolaris  (1)
  • B. napus
  • protoplast fusion
  • 1
    Electronic Resource
    Electronic Resource
    Studies on the fungal phytotoxin victorin: Structures of three novel amino acids from the acid hydrolyzate (1985)
    Springer
    Cellular and molecular life sciences 41 (1985), S. 1370-1374 
    Details
    ISSN: 1420-9071
    Keywords: Cochliobolus victoriae ; Helminthosporium ; Bipolaris ; Avena
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The host-selective phytotoxin victorin, produced by the fungusCochliobolus victoriae, was found to be at least partially peptidic in nature, and did not contain victoxinine. The exact mass of the M-H ion was measured by FABMS as 795.1877. Derivatives of three major acid hydrolysis products were isolated. The structures of the corresponding amino acids were assigned as 2S,3R-3-hydroxyleucine, 5,5-dichloroleucine, and 3-hydroxylysine. A into victorin by the fungus in vivo.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01949994
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Analysis of organelle genomes in a somatic hybrid derived from cytoplasmic male-sterile Brassica oleracea and atrazine-resistant B. campestris (1987)
    Springer
    Theoretical and applied genetics 74 (1987), S. 303-309 
    Details
    ISSN: 1432-2242
    Keywords: Somatic hybridization ; Atrazine resistance ; Mitochondrial recombinants ; Brassica ; Cytoplasmic male sterility
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary An atrazine-resistant, male-fertile Brassica napus plant was synthesized by fusion of protoplasts from the diploid species B. oleracea and B. campestris. Leaf protoplasts from B. oleracea var. italica carrying the Ogura male-sterile cytoplasm derived from Raphanus sativus were fused with etiolated hypocotyl protoplasts of atrazine-resistant B. campestris. The selection procedure was based on the inability of B. campestris protoplasts to regenerate in the media used, and the reduction of light-induced growth of B. oleracea tissue by atrazine. A somatic hybrid plant that differed in morphology from both B. oleracea and B. campestris was regenerated on medium containing 50 μM atrazine. Its chromosome number was 36–38, approximately that of B. napus. Furthermore, nuclear ribosomal DNA from this hybrid was a mixture of both parental rDNAs. Southern blot analyses of chloroplast DNA and an assay involving tetrazolium blue indicated that the hybrid contained atrazine-resistant B. campestris chloroplasts. The hybrid's mitochondrial genome was recombinant, containing fragments unique to each parent, as well as novel fragments carrying putative crossover points. Although the plant was female-sterile, it was successfully used to pollinate B. napus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00274711
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Rearrangement, amplification, and assortment of mitochondrial DNA molecules in cultured cells of Brassica campestris (1989)
    Springer
    Theoretical and applied genetics 77 (1989), S. 17-25 
    Details
    ISSN: 1432-2242
    Keywords: Brassica ; Callus culture ; Mitochondrial DNA ; Genomic variability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary We compared Brassica campestris mitochondrial and chloroplast DNAs from whole plants and from a 2-year-old cell culture. No differences were observed in the chloroplast DNAs (cpDNAs), whereas the culture mitochondrial DNA (mtDNA) was extensively altered. Hybridization analysis revealed that the alterations are due entirely to rearrangement. At least two inversions and one large duplication are found in the culture mtDNA. The duplication element is shown to have the usual properties of a plant mtDNA high frequency “recombination repeat”. The culture mtDNA exists as a complex heterogeneous population of rearranged and unrearranged molecules. Some of the culture-associated rearranged molecules are present in low levels in native plant tissue and appear to have sorted out and amplified in the culture. Other mtDNA rearrangements may have occurred de novo. In addition to alterations of the main mitochondrial genome, an 11.3 kb linear mtDNA plasmid present in whole plants is absent from the culture. Contrary to findings in cultured cells of other plants, small circular mtDNA molecules were not detected in the B. campestris cell culture.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00292310
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    Paper (German National Licenses)
    Fulltext
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