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  • 1
    Electronic Resource
    Electronic Resource
    Fusicoccin effects on maize roots: relationship between malate accumulation and elongation (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Plant, cell & environment 3 (1980), S. 0 
    Details
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract In maize root segments malate accumulation, measured by gas chromatography, was found to be strongly promoted by fusicoccin (FC). The effects of FC on root elongation and proton extrusion were also analysed. Growth rates and extrusion rates were found to be proportional to malate content. Other organic acids were analysed, but no significant changes were found following FC treatment. The effects of FC are discussed in relation to the regulation of metabolism and growth.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/1365-3040.ep11581879
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  • 2
    Electronic Resource
    Electronic Resource
    Differential growth of georeacting maize roots (1981)
    Springer
    Planta 151 (1981), S. 146-150 
    Details
    ISSN: 1432-2048
    Keywords: Georeaction (root) ; Growth inhibitors ; Growth (root) ; Root (georeaction, growth) ; Zea
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The growth rate of the two sides of 10-mm apical segments prepared from primary roots and of intact primary roots of maize has been analyzed in both vertical and horizontal positions, using a filming method allowing continuous growth recording. The data showed that the georeaction began by a decrease in the overall elongation rate of the roots. This inhibition is effective on the lower side of the bending zone, where the growth is practically stopped during the period of maximum rate of geocurvature. In contrast, the growth is slightly enhanced on the upper part of the elongating zone.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00387816
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  • 3
    Electronic Resource
    Electronic Resource
    Auxin binding in roots: A comparison between maize roots and coleoptiles (1981)
    Springer
    Planta 153 (1981), S. 447-452 
    Details
    ISSN: 1432-2048
    Keywords: Auxin binding ; Root (auxin) ; Zea
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Auxin binding onto membrane fractions of primary roots of maize seedlings has been demonstrated using naphth-1yl-acetic acid (NAA) and indol-3yl-acetic acid (IAA) as ligands. This binding is compared with the already well characterized interaction between auxins and coleoptile membranes. The results indicate that while kinetic parameters are of the same order for root and coleoptile binding, a number of differences occur with respect to location in cells and relative affinity. The possible significance of the existence of such binding sites in root cells is discussed in relation to auxin action.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00394984
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  • 4
    Electronic Resource
    Electronic Resource
    Mitotic activity in the maize root apex after freeze-decapping (1983)
    Springer
    Planta 157 (1983), S. 286-288 
    Details
    ISSN: 1432-2048
    Keywords: Decapping by freezing (roots) ; Mitosis (root apex) ; Root cap ; Zea (mitotic activity)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Mitosis and nuclear DNA synthesis have been examined in root apices of maize whose caps were removed by a freezing technique. These processes are not impaired by this technique even though cells at the surface of the decapped apex experience a temperature close to 0°±1.5° C for a brief period. We conclude that freeze-decapping is without significant deleterious effects to the apex and therefore the technique is a useful adjunct in studies of the role of the cap on root growth.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00405196
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  • 5
    Electronic Resource
    Electronic Resource
    Transport and metabolism of [214-C]abscisic acid in maize root (1982)
    Springer
    Planta 154 (1982), S. 556-561 
    Details
    ISSN: 1432-2048
    Keywords: Abscisic acid (metabolism, transport) ; Gravireaction ; Growth (roots) ; Root growth and ABA ; Zea (ABA and root growth)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The tips of intact maize (cv. LG 11) roots, maintained vertically, were pretreated with a droplet of buffer solution or a bead of anion exchange resin, both containing [214-C]abscisic acid (ABA). A significant basipetal ABA movement was observed and two metabolites of ABA (possibly phaseic acid and dihydrophaseic acid) were found. ABA pretreatment enhanced the gravireaction of 10 mm apical root segments kept both in the dark and in the light. The possibility that ABA could be one of the endogenous growth inhibitors produced or released by the cap cells is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00403000
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  • 6
    Electronic Resource
    Electronic Resource
    Ethylene production and cell wall formation in mesophyll protoplasts (1982)
    Springer
    Cellular and molecular life sciences 38 (1982), S. 93-94 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The regulation of ethylene synthesis, in relation to the presence of a new cell wall, has been investigated forNicotiana sylvestris leaf protoplasts. It is clear that the production of ethylene is not controlled by the new wall, which has no action on the ethylene formation. The addition of dichlorobenzonitrile to cultivated protoplasts causes the inhibition of wall formation, without any other apparent deleterious effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01944546
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  • 7
    Electronic Resource
    Electronic Resource
    Auxin effects on root growth and ethylene production (1983)
    Springer
    Cellular and molecular life sciences 39 (1983), S. 493-494 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Maize root segments were treated with indol-3yl-acetic acid (IAA) and growth effects and ethylene production were analyzed. The increase of ethylene production due to IAA was quite small; therefore it is difficult to conclude that ethylene could — as previously postulated-mediate the growth inhibition induced by IAA.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01965170
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  • 8
    Electronic Resource
    Electronic Resource
    Adenosine 3′,5′-cyclic monophosphate levels in maize roots (1981)
    Springer
    Cellular and molecular life sciences 37 (1981), S. 1279-1280 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Endogenous levels of adenosine 3′,5′-cyclic monophosphate (cAMP) in maize (cv. LG 11) root cells, grown in light and dark conditions, were found to be 309 and 387 pmoles/g of fresh tissue respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01948359
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