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  • Ricinus  (3)
  • sex pheromone  (2)
  • Springer  (5)
  • American Society of Hematology
  • Macmillian Magazines Ltd.
  • 2000-2004  (1)
  • 1975-1979  (4)
  • 1935-1939
Collection
Keywords
Publisher
  • Springer  (5)
  • American Society of Hematology
  • Macmillian Magazines Ltd.
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Determinations of indole-3-acetic acid in xylem sap of Ricinus communis L. using mass fragmentography (1979)
    Springer
    Planta 144 (1979), S. 299-303 
    Details
    ISSN: 1432-2048
    Keywords: Auxin ; Mass fragmentography ; Ricinus ; Xylem sap
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Mass fragmentography employing a deuterated internal standard was used to make quantitative analyses of indole-3-acetic acid in xylem sap collected from Ricinus communis L. When contamination of the sap by microorganisms was reduced by frequent collection, levels of IAA were found to be less than 0.5 ng ml-1. It is therefore proposed that the transpiration stream does not play a significant role in the transport of IAA within the plant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00388773
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  • 2
    Electronic Resource
    Electronic Resource
    Proton co-transport of sugars in phloem loading (1977)
    Springer
    Planta 135 (1977), S. 297-299 
    Details
    ISSN: 1432-2048
    Keywords: Phloem-loading ; Proton co-transport ; Ricinus ; Sugar transport
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Loading of 14C-labelled sugars from the hollow petiole of Ricinus communis L. was stimulated by potassium and by low pH in that both the 14C-activity and the sugar concentration of phloem sap collected from a nearby incision increased. A pH drop was observed in the solution perfusing a hollow petiole. This pH drop was greater in the presence of potassium and less in the presence of sugars, while the uncoupler CCCP induced a pH rise in the perfusing solution. Sugars were detected in the perfusing solution when it was buffered at pH〉9. A model is proposed for a proton co-transport of sugars from the free space driven by a linked proton efflux/potassium influx pump.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00384903
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  • 3
    Electronic Resource
    Electronic Resource
    Ethological function of components of a sex attractant system for oriental fruit moth males,Grapholitha molesta (Lepidoptera: Tortricidae) (1975)
    Springer
    Journal of chemical ecology 1 (1975), S. 475-491 
    Details
    ISSN: 1573-1561
    Keywords: Tortricidae ; Grapholitha molesta ; Oriental fruit moth ; sex pheromone ; attractant ; Synergist ; hairpencil ; aphrodisiac ; cis-8-dodecenylacetate ; trans-8-dodecenylacetate ; dodecylalcohol ; cis-8-dodecen-1-ol
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Field studies of male Oriental fruit moth,Grapholitha molesta (Busck), behavior indicated that a mixture of cis-8-dodecenyl acetate (c8-12∶Ac) and ca. 7% trans-8-dodecenyl acetate (t8-12∶Ac) was requisite for upwind anemotaxis. The simultaneous emission of dodecyl alcohol (12∶OH) and the attractant blend of c8-12∶Ac containing ca. 7% t8-12∶Ac elicited a behavioral repertoire including close-range orientation, landing near the chemical source, wing fanning, and extrusion of the males' abdominal hairpencils in precopulatory display. The effect of 12∶OH in increasing trap catches was, therefore, not due to its effect on upwind anemotaxis, but rather to its importance in eliciting landing and other close-range precopulatory behavior. Interestingly, cis-8-dodecen-1-ol in extremely low ratios to the attractants (1∶333) appeared to duplicate the activity of 12∶OH used in ratios of 3∶1 to the attractants. Laboratory observations of mating sequences revealed that male hairpencil eversion always preceded copulation. The evidence supports a male response sequence based on specific component combinations and concentrations eliciting successive behavioral steps rather than a response hierarchy dependent on increases in concentration of a single chemical or blend. Additionally, the closeness of the males' approach to c8-12:Ac containing ca. 7% t8-12:Ac was optimal at a discrete emission rate, and male responses were diminished within 30–60 sec after the males' arrival at the attractant source.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00988588
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  • 4
    Electronic Resource
    Electronic Resource
    Behavioral responses of maleArgyrotaenia velutinana (Lepidoptera: Tortricidae) to components of its sex pheromone (1976)
    Springer
    Journal of chemical ecology 2 (1976), S. 333-352 
    Details
    ISSN: 1573-1561
    Keywords: Argyrotaenia velutinana ; redbanded leafroller ; sex pheromone ; attractant ; cis-11-tetradecenyl acetate ; trans-11-tetradecenyl acetate ; dodecyl acetate ; male behavior ; synergist ; inhibitor
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Males of the redbanded leafroller,Argyrotaenia velutinana (Walker) (Lepidoptera: Tortricidae), were studied for their behavioral responses in laboratory olfactometers and in the field to the 3 components of the female-produced sex pheromone:cis-11-tetradecenyl acetate (c11–14∶Ac),trans-11-tetradecenyl acetate (t11–14∶Ac), and dodecyl acetate (12∶Ac). Dodecyl acetate, when evaporated with c11–14∶Ac (8%trans) in the field, modified the behavior of feral males nearby the chemical source, causing an increase in the frequency of landing and close approach to the pheromone dispenser. Apparently, an inflight behavioral modification concerning landing or not landing occurs within 60 cm of the source and is mediated by 12∶Ac. In laboratory olfactometers, c11–14∶Ac (8%trans) demonstrated a lower threshold for male activation than pure c11- and t11–14∶Ac and blends of the two isomers. Additionally, over a wide range of dosages, males responded with optimum wing-fanning response to c11–14∶Ac (8%trans) compared to pure c11–14∶Ac, c11–14:Ac (30%trans), and pure t11–14∶Ac, suggesting that thecis∶trans ratio rather than absolute amounts of either isomer, is a crucial factor in eliciting male response. When presented with c11–14∶Ac (8%trans) (1∶1), dodecyl acetate caused a significant prolongation of wing-fanning over c11–14∶Ac (8%trans) alone and resulted in a greater percentage of males moving upwind to the source. Since the increase in wing-fanning and orientation occurred at higher concentrations of the 3-component mixture, the effect of 12∶Ac in the laboratory may reflect the close-range role of 12∶Ac in the field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00988281
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  • 5
    Electronic Resource
    Electronic Resource
    Vascular transport of auxins and cytokinins in Ricinus (2000)
    Springer
    Plant growth regulation 32 (2000), S. 157-160 
    Details
    ISSN: 1573-5087
    Keywords: auxins ; cytokinins ; Ricinus ; phloem sap ; xylem sap ; vascular transport
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Analyses of vascular saps supplying source and sink organs havedemonstrated the presence of major endogenous hormones and/or theirprecursors. Indol-3yl-acetic acid, a number of gibberellins, cytokininsand abscisic acid, as well as the precursor for ethylene production havebeen found in these vascular saps, allowing the sites of hormonalsynthesis and putative target tissues to be deduced. Exogenously appliedhormones are also readily loaded into these vascular pathways and may betranslocated over considerable distances from a point of application.Observations such as these indicate a possible co-ordination systembetween source and sink regulated by the synthesis and transport ofendogenous hormones. It is widely accepted that the partitioning ofassimilates between photosynthetic source organs and utilising sinkorgans is regulated by endogenous plant hormones. The key intermediatesteps involved in assimilate transport, such as phloem loading andunloading, have been shown to be responsive to applied hormones,although the role of endogenous hormones in these processes remainsessentially unresolved. Results of the analyses of vascular saps fromRicinus communis, which have been obtained using a range ofphysicochemical methods, are compared and contrasted with those obtainedby the application of exogenous hormones or their precursors. Theseresults are evaluated critically and interpreted in the light of currentmodels of source:sink regulatory processes and the long-distancetransport of auxins and cytokinins in higher plants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1010749411009
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