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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Plant molecular biology reporter 17 (1999), S. 19-29 
    ISSN: 1572-9818
    Keywords: Arabidopsis thaliana ; Glycine soja ; Marchantia polymorpha ; mitochondrial DNA ; repeated sequence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In previous studies we have shown that recombination across a 299-bp interspersed sequence accounts for the diversity of the mitochondrial genome in wild and cultivated soybeans. In this study, a computer-assisted survey of databases was performed using sequences of the repeat and its neighboring regions as query sequences. The sequences of soybean were found to be present as many short segments that include repeated sequences in the mitochondrial genomes of Arabidopsis and liverwort. Taken together with the results of a DNA gel-blot analysis, this suggests that the soybean sequences were found to have originated during land plant evolution and are present as small-interspersed segments in many taxa of land plants.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1573-5109
    Keywords: Chinese wild soybean ; chloroplast ; cytoplasmic genome ; geographical differentiation ; Glycine soja ; mitochondria ; RFLPs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract RFLPs of chloroplast (cp) and mitochondrial (mt) DNA have been used to characterize the cytoplasmic genome of wild soybean, Glycine soja, growing in China. We have found from the RFLPs of that the cytoplasmic genomes of most Chinese wild soybeans have a combination of cpIII with mt-a or a combination of cpII with mt-b accompanied by mtIV or mtV according to our classification. CpII was not observed in combination with mt-a and cpIII was not observed in combination with mt-b. The regional distribution of these two types showed clines with opposite directions. The Yangtze River Valley had the greatest diversity in each of cp and two mt profiles detected in this study and the cytoplasmic genome combining these three profiles showed the highest degree of polymorphism in this region. The Yangtze River Valley may be a center of cytoplasmic diversity of wild soybean and may contain various genetic resources of soybean.
    Type of Medium: Electronic Resource
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