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  • 1
    Electronic Resource
    Electronic Resource
    Promotion of Cell Wall Synthesis by Indolylacetic Acid (1962)
    [s.l.] : Nature Publishing Group
    Nature 195 (1962), S. 1322-1322 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Table 1 compares the effect of 3 mg/1. indolylacetic acid (IAA) on cell wall synthesis in oat coleoptile segments: (a) when no inhibitor is present and elongation occurs; (6) when elongation is inhibited by 0-25 M mannitol; (c) when elongation is inhibited by 0-01 M calcium chloride, which is ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1951322a0
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  • 2
    Electronic Resource
    Electronic Resource
    Intermediates and Competing Reactions in the Photodestruction of Indoleacetic Acid (1958)
    [s.l.] : Nature Publishing Group
    Nature 181 (1958), S. 895-896 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE changes in ultra-violet spectrum during photodestruction of aqueous solutions of indole -3-acetic acid by monochromatic ultra-violet light of 280 mfjL, in air, have been followed in parallel with the decrease in Salkowski reaction intensity and in Avena coleoptile growth-promoting activity. The ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/181895a0
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  • 3
    Electronic Resource
    Electronic Resource
    The Base Curvature Response of Avena Seedlings to the Ultraviolet (1956)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 9 (1956), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1956.tb07805.x
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  • 4
    Electronic Resource
    Electronic Resource
    Estimation of cytoplasmic and vacuolar p H in higher plant cells by 31 P NMR (1980)
    [s.l.] : Nature Publishing Group
    Nature 283 (1980), S. 870-872 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The observation of intracellular organic and inorganic phosphates by 31P NMR has been proposed as a method for determining the internal pH of animal and microbial cells8,9. As the chemical shift (d, the resonance frequency relative to a standard) of 31P in these compounds yields a titration curve ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/283870a0
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  • 5
    Electronic Resource
    Electronic Resource
    Role of Turgor in Plant Cell Growth (1972)
    [s.l.] : Nature Publishing Group
    Nature 239 (1972), S. 163-164 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Burstrom fails to come to grips with the principle that irreversible increase in plant cell volume involves simultaneous water uptake (driven by a water potential difference) and cell wall yielding that depends on turgor stress, and in this sense is "driven by" turgor pressure. Lockhart2 derived ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/239163a0
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  • 6
    Electronic Resource
    Electronic Resource
    Extent of intracellular pH changes during H+ extrusion by maize root-tip cells (1981)
    Springer
    Planta 152 (1981), S. 74-78 
    Details
    ISSN: 1432-2048
    Keywords: Cytoplasmic pH ; Fusicoccin ; Hydrogen-ion extrusion ; pH-stat ; Root ; Zea
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract 31P-Nuclear-magnetic-resonance spectra of maize (Zea mays L.) root tips, that had been induced to extrude large amounts of H+ in response to fusicoccin (FC) in the presence of potassium salts, indicate that the cytoplasmic pH does not become higher than that of controls. In fact, the cytoplasmic pH may become slightly (approx. 0.1 pH unit) lower in cells extruding H+. Estimations of the buffer capacity of the cells show that without active intracellular pH regulation, H+ extrusion caused by FC would cause the intracellular pH to rise by at least 0.6 pH unit h-1. Our results indicate that intracellular pH is tightly regulated even during extreme rates of acid extrusion, and that a rise in cytoplasmic pH is not the signal linking H+ extrusion with enhanced organic-acid synthesis or other intracellular responses to H+ pumping.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00384988
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  • 7
    Electronic Resource
    Electronic Resource
    Intracellular localization of the active process in polar transport of auxin (1973)
    Springer
    Planta 111 (1973), S. 297-314 
    Details
    ISSN: 1432-2048
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The cytoplasm of maize coleoptile cells was displaced to either the apical or basal ends of the cells by centrifuging (1750xg for 10 min) segments in which protoplasmic streaming had been stopped by pretreatment with cytochalasin B. Centrifugation toward the base of the segment promotes the subsequent basipetal transport of indole-3-acetic acid, whereas apical centrifugation dramatically inhibits this transport. Apical centrifugation neither promotes acropetal transport nor reverses the polarity of auxin transport. Experiments in which the amyloplasts were separated from the bulk of the cytoplasm indicate that the basipetal transport is independent of both the position and pressure exerted by the amyloplasts but is strongly dependent on the amount of cytoplasm at the basal end of the cells. These effects of centrifugation on auxin transport lead to the conclusion that the metabolic component of the transport is a polar secretion of auxin localized in the basal plasma membrane of each cell.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00385549
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  • 8
    Electronic Resource
    Electronic Resource
    Inhibition by light of growth and Golgi-localized glucan synthetase in the maize mesocotyl (1982)
    Springer
    Planta 156 (1982), S. 302-308 
    Details
    ISSN: 1432-2048
    Keywords: Mesocotyl ; Phytochrome and glucan synthetase ; Polysaccharide synthesis ; Zea (glucan synthesis)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract When dark-grown maize (Zea mays L.) seedlings were exposed to red light (R), Golgi-localized glucan synthetase activity in the mesocotyl began to decrease within 1 h, and fell by approx. 70% in 12 h. The response required at least 10-2 μmol m-2 R and saturated at 100 μmol m-2. Far-red light (FR) alone inhibited glucan synthetase, and FR reversed the inhibition by R back to the level caused by FR alone. Density gradient fractionation indicated that of the major membrane markers only the Golgi-localized glucan-synthetase activity was affected by R. Golgi-localized latent inosine-diphosphatase activity was unaffected. The kinetics of the response, the photon fluence dependence, and the reversibility by FR all correlated with the inhibition by light of elongation of the mesocotyl, indicating that light inhibits growth and glucan synthetase activity by a similar mechanism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00397467
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  • 9
    Electronic Resource
    Electronic Resource
    Auxin controls Golgi-localized glucan synthetase activity in the maize mesocotyl (1982)
    Springer
    Planta 156 (1982), S. 309-313 
    Details
    ISSN: 1432-2048
    Keywords: Auxin and glucan synthetase ; Mesocotyl ; Polysaccharide synthesis ; Zea (glucan synthetase)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Decapitation or red light irradiation (R) inhibited growth and Golgi-localized glucan synthetase (GS I) activity in the mesocotyl of intact maize (Zea mays L.) seedlings. Applied auxin (indole-3-acetic acid) prevented the effects of R and of decapitation on both growth and GS I. Auxin applied several hours after irradiation prevented any further decline in GS I but did not restore it. Mesocotyl segments incubated in solution elongated in response to auxin but lost GS I with time regardless of the presence of exogenous auxin. An attached seed was necessary for maintenance of GS I in the dark-grown mesocotyl.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00397468
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  • 10
    Electronic Resource
    Electronic Resource
    Libri novi (1960)
    Springer
    Mycopathologia 13 (1960), S. 256-263 
    Details
    ISSN: 1573-0832
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02089882
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