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  • 2005-2009  (136)
  • 1980-1984  (46)
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  • 1
    Electronic Resource
    Electronic Resource
    Synthesis of the compatible solutes glucosylglycerol and trehalose by salt-stressed cells of Stenotrophomonas strains (2005)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 243 (2005), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: In this study, physiological processes were analysed, which are involved in salt acclimation of two Stenotrophomonas species, Stenotrophomonas maltophilia strain DSM 50170 and Stenotrophomonas rhizophila strain DSM 14405. S. maltophilia accumulated trehalose as the only osmolyte, whereas S. rhizophila produced additionally to trehalose glucosylglycerol (GG). The different spectrum and amounts of compatible solutes in these two strains led to differences in terms of their salt tolerance. The human-associated S. maltophilia was able to grow in media containing up to 3% NaCl (w/v). In contrast, S. rhizophila propagated in salinities up to 5% NaCl (w/v). The strain was isolated from the rhizosphere, a microenvironment which is characterised by high and changing salinities. Light microscopic analysis of S. rhizophila cells showed a significant increase in cell length of salt-treated cells in comparison to control cells. Cells of S. rhizophila exposed to more than 2% NaCl excreted GG into the medium during the transition from exponential to stationary growth phase, while the internal trehalose pool remained constant. This feature offers a high potential for the biotechnological production of GG.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/j.femsle.2004.12.005
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  • 2
    Electronic Resource
    Electronic Resource
    Hybrid variegation in the genus Pelargonium (1982)
    Springer
    Current genetics 5 (1982), S. 245-249 
    Details
    ISSN: 1432-0983
    Keywords: Hybrid variegation ; Pelargonium ; Extranuclear inheritance ; Plastid DNA ; Restriction patterns
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary. 1) The genetical and cytological analysis of crosses between the wild-type form ‘Roseum’ of Pelargonium zonale (L.) L 'Herit. ex Ait. and the hybrid species Pelargonium zonale hort. ‘Stadt Bern’' revealed the occurrence of hybrid variegation in the genus Pelargonium 2) The plastids in the green-white variegated plants were sorted out in the quick apical way characteristic for Pelargonium chimera. Six types of periclinal chimeras could be observed. 3) The DNAs of the two different plastomes can be distinguished by restriction endonuclease analysis with EcoRl and BamHI. 4) The differences in the cleavage patterns allowed a detailed description of the process of sorting out of the two parental plastids types within the variegated hybrids on the level of their plastid DNA. In all cases observed the cleavage pattern of ‘Roseum’ plastid DNA was found in the green tissue and the pattern of ‘Stadt Bern’ plastid DNA in the white tissue. 5) From these results we draw the conclusion that there is a disharmony between the F1-hybrid nucleus and the plastome of Stadt Bern', which blocks the normal differentiation of ‘Stadt Bern’ plastids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00391813
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  • 3
    Electronic Resource
    Electronic Resource
    Immunohistochemical localization of a protein fraction derived from rabbit renal papilla (1984)
    Springer
    Histochemistry and cell biology 81 (1984), S. 457-464 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Studies were carried out to define antigenic characteristics of the rabbit renal collecting duct. Renal papillae of adult rabbits were homogenized, centrifuged, and the 600×g pellet was extracted with 0.5% Triton X-100 in the presence of 1 M NaCl. The crude extract was fractionated on an anion exchange column (DEAE cellulose). A fraction enriched in acidic proteins that co-purified with a radioactive 150 kd glycoprotein from cultured collecting duct cells (Minuth 1982), was used for immunization of guinea pigs. The antiserum shows the following characteristics as revealed by indirect immunofluorescence on the rabbit kidney: 1) Among all tubular epithelial cells only principal cells of the collecting duct and the connecting tubule cell show immunoreactivity. 2) The antiserum decorates the epithelial-interstitial interface of the whole collecting duct as well as of connecting tubule and thick ascending limb of Henle's loop. 3) There is immunoreactivity of interstitial fibers throughout the kidney. 4) Epithelial cells in a variety of other organs in rabbit did not react with the antiserum. Our data demonstrate an antigenic distinction of both, the connecting tubule cell and the principal cell, discriminating these cells from other tubular epithelial cells including the intercalated cells of the collecting duct system. Furthermore, our findings point to a heterogeneity along the distal nephron with respect to the constituents of the epithelial-interstitial interface.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00489750
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  • 4
    Electronic Resource
    Electronic Resource
    Book reviews (1983)
    Springer
    Theoretical and applied genetics 66 (1983), S. 38-38 
    Details
    ISSN: 1432-2242
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00281845
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  • 5
    Electronic Resource
    Electronic Resource
    Variations of chloroplast DNAs in the genus Pelargonium and their biparental inheritance (1981)
    Springer
    Theoretical and applied genetics 60 (1981), S. 37-41 
    Details
    ISSN: 1432-2242
    Keywords: Pelargonium ; Inter- and intra-specific chloroplast DNA variation ; Restriction patterns ; Biparental plastid inheritance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The comparison of EcoRI patterns of chloroplast DNAs (ctDNAs) from five species of the genus Pelargonium and from 16 cultivars and varieties of Pelargonium zonale hort. demonstrates a remarkable inter- and intraspecific ctDNA (plastome) variation. The plastome of the P. zonale varieties could be differentiated into groups I, II and III. Reasons for this variation seem to be: occurrence of numerous spontaneous plastome mutations, intense hybridisation by gardeners and breeders, and biparental plastid inheritance. Crosses of P. zonale varieties with different ctDNA types lead to the direct evidence on the molecular level of biparental plastid inheritance and plastid sorting-out in F1-hybrids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00275175
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  • 6
    Electronic Resource
    Electronic Resource
    Deformation dependence of magnetic moments in the odd transitional nuclei117–125Te (1981)
    Springer
    The European physical journal 299 (1981), S. 251-261 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The magnetic moments of the 5/2 1 + state in117Te at 274.4 keV and of the 7/2 1 + state in121Te at 443.1 keV have been determined asμ exp(5/2+)=−0.75(5)n.m. andμ exp(7/2+)=+0.63(7) n.m., respectively, using the TDPAD method and the reactions115,119Sn(α,2n)117,121Te. An evaluation method is described which provides, in case of the normalized time differential patternR(t) exhibits less than half of an oscillation period, a unique value of the Larmor frequency. The comparison of the measured magnetic moments with Nilsson-, soft rotor Coriolis- as well as core-particle coupling calculations gives valuable hints on the shape dependence of magnetic moments and, consequently, on the deformation of different states in the odd transitional nuclei117–125Te. In the light of the core-particle coupling model the positive parity states of117Te and121Te are interpreted as the members ofΔJ=1 andΔJ=2 bands built on thes 1/2,d 3/2,d 5/2 and g7/2 single-particle states, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01443943
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  • 7
    Electronic Resource
    Electronic Resource
    Buchbesprechungen (1983)
    Springer
    OR spectrum 5 (1983), S. 243-254 
    Details
    ISSN: 1436-6304
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01719854
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  • 8
    Electronic Resource
    Electronic Resource
    Chemical polarization of nuclei and mechanism of photolysis of α-hydroxyketones (1982)
    Springer
    Russian chemical bulletin 31 (1982), S. 460-466 
    Details
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Conclusions 1. We have detected and investigated chemical polarization of protons and carbon nuclei in photochemical reactions ofα-hydroxyketones. 2. On the basis of CPN, we have formulated a mechanism for the radical photoconversions of ketones.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00949760
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  • 9
    Electronic Resource
    Electronic Resource
    Magnetic moments of 5/2+[402] and 7/2+[404] band heads in the transitional nuclei117,121Te (1981)
    Springer
    Hyperfine interactions 9 (1981), S. 81-86 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01020902
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  • 10
    Electronic Resource
    Electronic Resource
    Über den Verzweigungsvorgang beiPsilotum undSelaginella mit Anmerkungen zum Begriff der Dichotomie (1980)
    Springer
    Plant systematics and evolution 133 (1980), S. 181-197 
    Details
    ISSN: 1615-6110
    Keywords: Pteridophyta ; Psilotum triquetrum ; Selaginella speciosa ; Apical shoot meristems ; apical initials ; meristem fractionation ; isotomous and anisotomous branching
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract After a critical evaluation of the concept of dichotomous branching in Cormophytes the shoot apical meristems ofPsilotum triquetrum andSelaginella speciosa are described. InPsilotum only the terminal meristems of the cryptophilic shoots have a three sided apical cell. Those of the photophilic shoots lack a typical apical cell.Selaginella has a two sided apical cell. The process of branching is independent from apical cells. It is due to an equal or unequal fractionation of the initial zone of the shoot apex which embraces all tissues above the leaf producing zone of the apical meristem.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00984379
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