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  • Solanum tuberosum  (2)
  • Long-bone  (1)
  • Springer  (3)
  • American Physical Society
  • 1985-1989  (3)
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Keywords
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  • Springer  (3)
  • American Physical Society
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  • 1985-1989  (3)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Genetic transformation in two potato cultivars with T-DNA from disarmed Agrobacterium (1987)
    Springer
    Theoretical and applied genetics 73 (1987), S. 744-750 
    Details
    ISSN: 1432-2242
    Keywords: Genetic manipulation ; Neomycin phosphotransferase ; Mixed infection ; Somaclonal variation ; Solanum tuberosum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Derivatives of potato (Solanum tuberosum cv.'s ‘Maris Bard’ and ‘Desiree’) transformed with disarmed T-DNA from genetically engineered Agrobacterium tumefaciens strains were isolated. The transformed plants were recovered from shoot-forming tumours induced by infection of wounds with mixedcultures of shoot-inducing A. tumefaciens strains T37 and either Agrobacterium strain LBA1834(pRAL1834), (Hille et al. 1983) or LBA4404(pBIN6; pRAL4404), (Bevan 1984). Two small-scale feasibility experiments gave at least four ‘Maris Bard’ plants transformed with pRAL1834 T-DNA and two ‘Desiree’ plants with pBIN6 T-DNA. The transformed ‘Maris Bard’ plants were morphologically abnormal and highly aneuploid. This was probably an unfortunate side-effect of a tissue culture-step introduced to promote the efficiency of shoot regeneration. The transformed ‘Desiree’ plants, in contrast, were isolated without promoting additional shoot-growth. They were morphologically normal, contained 47 and the euploid 48 chromosomes per cell respectively and had improved growth on media containing kanamycin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00260785
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  • 2
    Electronic Resource
    Electronic Resource
    Developmental regulation of RI TL-DNA gene expression in roots, shoots and tubers of transformed potato (Solanum tuberosum cv. Desiree) (1986)
    Springer
    Plant molecular biology 6 (1986), S. 321-330 
    Details
    ISSN: 1573-5028
    Keywords: Agrobacterium rhizogenes ; Solanum tuberosum ; T-DNA ; gene expression ; tuberisation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Expression of TL-DNA from Agrobacterium rhizogenes plasmid pRi 1855 was examined in a transformed derivative of Solanum tuberosum cv. Desiree, D9X8a. Northern blot analysis identified at least nine TL-DNA coded transcripts in roots, shoots and tubers but their relative abundance differed within and between organs. This revealed a distinctive pattern of organ specified differential expression. Grafting experiments showed that the abnormal shape of tubers of transformed potato was probably determined by TL-DNA products synthesised within the tuber and not by diffusable products synthesised in other parts of the plant. The abundance of at least one transcript, tr5, was probably determined by culture conditions. Implications for functions and control of expression of Ri TL-DNA genes are discussed. It is suggested that Ri TL-DNA provides a convenient and extensive set of model genes to study variation and stability of expression of linked foreign genes introduced into plants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00034939
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  • 3
    Electronic Resource
    Electronic Resource
    Patterns of long-bone fracture in two nubian cementeries (1986)
    Springer
    Human evolution 1 (1986), S. 495-506 
    Details
    ISSN: 1824-310X
    Keywords: Fractures ; Long-bone ; Paleodemography ; Nubia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The analysis of traumatic fractures can provide valuable information concerning the affects of sociopolitical factors upon the health of prehistoric populations. However, such information can only be acquired by implementing a quantitative demographic approach. The present research applies such a method to longbone fractures in two medieval Christian populations excavated from ancient Nubia. Long-bones of two hundred and eighteen individuals from an early (550 to 750 A.D.) Christian cemetery and 188 individuals from a late (750 to 1450 A.D.) Christian cemetery were examined for evidence of traumatic fracture. Analysis included a determination of fracture rates, age and sex related fracture patterns, and rate of fracture per years at risk. The results of this study indicate that the majority of fractures in both cemeteries were likely caused by accidental falls. Fractures resulting from direct (possibly interpersonal) violence were found in both samples, though at a higher frequency in the early Christian population (27% versus 16%). Middle-aged adults (particularly males) of the early cemetery exhibited a higher than expected risk to fractures indicating an activity related cause of injury. In contrast, the late Christian population showed a marked increase in fractures among both children and the elderly. This distribution may reflect changes in health and residential architecture which occurred during the late Christian period.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02437466
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