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  • Articles  (15)
  • Articles: DFG German National Licenses  (15)
  • Life and Medical Sciences  (11)
  • Pectinophora gossypiella  (4)
  • AUXILIARY SYSTEMS
  • GEOPHYSICS
  • 1985-1989  (11)
  • 1970-1974  (3)
  • 1930-1934  (1)
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  • Articles  (15)
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  • Articles: DFG German National Licenses  (15)
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  • 1
    Electronic Resource
    Electronic Resource
    Monitoring insecticide resistance with insect pheromones (1986)
    Springer
    Cellular and molecular life sciences 42 (1986), S. 1293-1295 
    Details
    ISSN: 1420-9071
    Keywords: Pectinophora gossypiella ; pink bollworm moth ; insecticide resistance ; pheromones ; sticky traps ; permethrin ; fenvalerate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary A novel pheromone-baited sticky trap laced with insecticides proved to be a simple and effective means of monitoring insecticide resistance in the pink bollworm moth. Adult males from fields treated frequently with pyrethroid insecticides showed up to 20-fold resistance to permethrin and up to 14.5-fold resistance to fenvalerate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01946429
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  • 2
    Electronic Resource
    Electronic Resource
    Potential for evolution of resistance to pheromones (1988)
    Springer
    Journal of chemical ecology 14 (1988), S. 1547-1560 
    Details
    ISSN: 1573-1561
    Keywords: Resistance ; mating disruption ; sex pheromone ; (Z,Z)-7,11-hexadecadienyl acetate (Z,E)-7,11-hexadecadienyl acetate ; Lepidoptera ; Gelechiidae ; pink bollworm ; Pectinophora gossypiella
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract FemalePectinophora gossypiella (Saunders) from most of the desert cotton-growing areas of southern California emitted significantly more pheromone in 1984 and 1985 than in preceding years (1982 and 1983). This increase amounted to almost 20% by 1985. It is unlikely that this small change would represent effective resistance to disruptant pheromones, but this increase could reflect the result of selection pressure imposed by the use of mating disruption for population control. A worldwide survey of emitted pheromone from this species found that there was much more variation in the emission rate than the blend ratio of the two pheromone components. The emitted blend ratio was remarkably consistent over time (in southern California) and throughout the worldwide range of the insect. Small differences in the blend ratio that were detected probably have no major biological significance because of the relatively broad response spectrum of males to changes in the blend of pheromonal components. Populations of males did not consist of several phenotypes, each with a different preference for specific blend ratios. Rather, the broad response spectrum to blend ratios in a population can be attributed to variation in the response of any individual. Therefore, selection for a response phenotype that is narrowly tuned to the blend emitted by females may be difficult.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01012521
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  • 3
    Electronic Resource
    Electronic Resource
    Sensory and behavioral effects of gossyplure alcohol on sex pheromone response of male pink bollworm moths,Pectinophora gossypiella (1986)
    Springer
    Journal of chemical ecology 12 (1986), S. 25-38 
    Details
    ISSN: 1573-1561
    Keywords: Lepidoptera ; Gelechiidae ; Pectinophora gossypiella ; pink bollworm ; (Z,Z)-7,11-hexadecadienyl acetate ; (Z,E)-7,11-hexadecadienyl acetate ; (Z,Z)-7,11-hexadecadienol ; (Z,E)-7,11-hexadecadienol ; pheromone analog ; behavior ; electroantennogram
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract (Z,Z)- and (Z,E)-7,11-hexadecadienol, reported to be pheromone precursors, interfere with the normal sequence of behavioral response of malePectinophora gossypiella to sex pheromone. The magnitude of the interference can be diminished with higher release rates of the sex pheromone. (Z,Z)-7,11-Hexadecadienol is more effective than itsZ,E isomer in eliciting the reduction in the behavioral response. Electroantennographic evidence suggests that each alcohol may be interfering more with receptor sites for the conformationally similar pheromone acetate than with receptor sites for the other pheromone isomer. Defining behavioral and physiological effects of pheromone analogs such as the alcohols of gossyplure may help to determine their potential for behavioral manipulations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01045588
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  • 4
    Electronic Resource
    Electronic Resource
    The genitalia of the Indian mollusk Indoplanorbis exustusContribution from the Museum of Natural History, University of Illinois, No. 71. (1933)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 55 (1933), S. 1-13 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The molluscan genus Indoplanorbis is shown to differ markedly from all other members of the family Planorbidae in the generative complex, the vas deferens being encased in a long, flexible tube in which it is freely movable. The preputium of the male complex is shown to be completely evertible from the male opening and to act as a male copulatory organ. The presence of a single, heavy penial retractor innervated by an equally strong nerve is indicated. Comparisons are made with the genitalia of the European Coretus and the American Helisoma showing fundamental differences in the generative apparatus of the three groups. Indoplanorbis is most closely related to Coretus, the vas deferens of that group being also encased in a tube. Helisoma differs from both of these genera, the vas deferens not being encased in a tube and is of the same diameter throughout its length.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050550102
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  • 5
    Electronic Resource
    Electronic Resource
    Transport of proteins into yeast mitochondria (1988)
    New York, N.Y. : Wiley-Blackwell
    Journal of Cellular Biochemistry 36 (1988), S. 59-71 
    Details
    ISSN: 0730-2312
    Keywords: origin of presequences ; intracellular ; intramitochondrial protein sorting ; stop-transport sequence ; ATP requirement ; protein unfolding ; translocation machinery ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: The amino-terminal sequences of several imported mitochondrial precursor proteins have been shown to contain all the information required for transport to and sorting within mitochondria. Proteins transported into the matrix contain a matrix-targeting sequence. Proteins destined for other submitochondrial compartments contain, in addition, an intramitochondrial sorting sequence. The sorting sequence in the cytochrome c1 presequence is a stop-transport sequence for the inner mitochondrial membrane. Proteins containing cleavable presequences can reach the intermembrane space by either of two pathways: (1) Part of the presequence is transported into the matrix; the attached protein, however, is transported across the outer but not the inner membrane (eg, the cytochrome c1 presequence). (2) The precursor is first transported into the matrix; part of the presequence is then removed, and the protein is reexported across the inner membrane (eg, the precursor of the iron-sulphur protein of the cytochrome bc1 complex).Matrix-targeting sequences lack primary amino acid sequence homology, but they share structural characteristics. Many DNA sequences in a genome can potentially encode a matrix-targeting sequence. These sequences become active if positioned upstream of a protein coding sequence. Artificial matrix-targeting sequences include synthetic presequences consisting of only a few different amino acids, a known amphiphilic helix found inside a cytosolic protein, and the presequence of an imported chloroplast protein.Transport of proteins across mitochrondrial membranes requires a membranes requires a membrane potential, ATP, and a 45-kd protein of the mitochondrial outer membrane. The ATP requirement for import is correlated with a stable structure in the imported precursor molecule. We suggest that transmembrane transport of a stably folded precursor requires an ATP-dependent unfolding of the precursor protein.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcb.240360107
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  • 6
    Electronic Resource
    Electronic Resource
    Formation of protease nexin-thrombin complexes on the platelet surface (1986)
    New York, N.Y. : Wiley-Blackwell
    Journal of Cellular Biochemistry 32 (1986), S. 201-206 
    Details
    ISSN: 0730-2312
    Keywords: protease nexin ; thrombin ; platelets ; protease inhibitor ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: We have recently described a platelet factor that is similar to the fibroblast thrombin inhibitor protease nexin I (PNI) [12]. The present manuscript shows that this platelet form of PN (PNp) does not complex [125I]-thrombin that has been blocked at its active site, consistent with the conclusion that it is a thrombin inhibitor. When platelets are incubated with [125I]-thrombin, PNp-[125MI]-thrombin complexers accumulate both in the medium and on the platelet surface. In the case of fibroblasts, PNI-[125I]-thrombin Complexes that form in solution bind to the cells as a consequence of a receptor-mediated clearance process [Low et al, Proc Natl Acad Sci USA 78:2340, 1981]. We show here that the PNp-[125I]-thrombin complexes that accumulate in platelet-binding incubation medium do not bind to platelets. Thus, the platelet-associated complexes must form by [125I]-thrombin binding to PNp that is associated with the platelet surface. Pretreatment of platelets with heparin markedly increases the number of PNp-[125I]-thrombin complexes that form on platelets. The basis for this increase in unclear. This effect seems incompatible with a heparinlike factor acting as the surface binding site for PNp.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcb.240320306
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  • 7
    Electronic Resource
    Electronic Resource
    Partial purification of microsomal signal peptidase from hen oviduct (1986)
    New York, N.Y. : Wiley-Blackwell
    Journal of Cellular Biochemistry 32 (1986), S. 193-200 
    Details
    ISSN: 0730-2312
    Keywords: hen oviduct ; human preplacental lactogen ; phosphlipid reactivation ; purification ; signal peptidase ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Signal peptidase has been purified approximately 600-fold from hen oviduct microsomes. Treatment of microsomes with ice-cold sodium carbonate at pH 11.5 removes soluble and extrinsic membrane proteins prior to solubilization of signal peptidase with Nonidet P-40. After dialysis to pH 8.2, the solubilized enzyme is chromatographed on diethylaminoethyl cellulose at pH 8.2. More than 90% of contaminating proteins bind to the column while signal peptidase and endogenous phospholipid are eluted in the column void volume. Enzyme activity subsequently binds to carboxymethyl cellulose at pH 5.8 and is eluted by approximately 100 to 200 mM NaCl during a NaCl gradient. Polypeptides present in partially purified hen oviduct signal peptidase have relative molecular masses ranging from 54 kD to less than 11 kD with major bands at 29, 23, 22, 19, 18 and 13 kD. The purified peptidase requires phospholipid for activity and is maximally active in the presence of 2 mg/ml phosphatidylcholine.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcb.240320305
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  • 8
    Electronic Resource
    Electronic Resource
    Studies on the mechanism of interaction between rabbit transferrin and reticulocytes (1971)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 77 (1971), S. 377-384 
    Details
    ISSN: 0021-9541
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The two stages in the uptake of transferrin by rabbit reticulo-cytes were investigated using radioiodine-labeled rabbit transferrin and albumin. The first stage of rapid, temperature-insensitive uptake of transferrin was similar to albumin uptake: uptake of both proteins increased linearly with increasing protein concentration of the incubation medium up to at least 60 mg/ml, was maximal at low ionic strength and pH, and increased in the presence of basic polyamino acids. Transferrin uptake was in part dependent on the reticulocyte concentration of the blood, but albumin uptake was independent of reticulocyte concentration.The second slower, temperature-sensitive stage of transferrin uptake was linearly related to reticulocyte concentration, and was not found with albumin, α1-macroglobulin or γ-globulin. Transferrin uptake was optimal at physiological pH and ionic strength and was unaffected by basic polyamino acids. When the transferrin concentration was raised, uptake increased to reach a maximum at a concentration of 15 mg/ml.It was concluded that the first stage of transferrin uptake was in part or wholly due to non-specific adsorption of transferrin to erythrocytes, while the second stage of uptake was specific for transferrin and reticulocytes and depended upon normal function of the cells.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcp.1040770312
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  • 9
    Electronic Resource
    Electronic Resource
    Effect of 5-bromodeoxyuridine on incorporation of RNA precursors in sea urchin embryos (1974)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 83 (1974), S. 259-261 
    Details
    ISSN: 0021-9541
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Exposure of early sea urchin embryos to 5-bromodeoxyuridine (at concentrations up to 100 μg per ml) severely decreases the uptake of exogenous 3H-uridine into RNA. However, the actual gross rate of DNA or RNA synthesis in these embryos appears not to be affected by the presence of 5-bromodeoxyuridine.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcp.1040830212
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  • 10
    Electronic Resource
    Electronic Resource
    Selective and nonselective isolation of temperature-sensitive mutants of mouse L-cells and their characterizationSupported by the Medical Research Council of Canada and the National Cancer Institute of Canada. (1971)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 78 (1971), S. 431-439 
    Details
    ISSN: 0021-9541
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Mutants of mouse L-cells which are temperature-sensitive for growth have been obtained by using both selective and nonselective isolation procedures on populations treated with the mutagen nitrosoguanidine. Selective isolation was carried out by utilizing a five-day treatment with 3H-TdR and ara-C as selective agents at the nonpermissive temperature. Nonselective isolation was performed by isolating 1400 clones in the absence of selective agents and then testing them for temperature-sensitivity. From this experiment we obtained a minimum estimate of 6 × 10-3 for the frequency of mutants in the mutagentreated population. The mutants were characterized by their plating efficiencies, growth in suspension culture, and uptake of isotopic precursors of DNA, RNA, and protein. A range in phenotypes was observed, and there appeared to be some differences between the mutants obtained by the two types of isolation procedures. In uptake experiments the most marked reductions in the rates of precursor incorporation were seen with 3H-TdR, rather than 3H-UR or 3H-Leu. Different mutant lines showed considerable variation in the rate of cessation of DNA synthesis as well as the time required for termination of cell division. These experiments suggest that both types of isolation procedures are feasible for obtaining temperature-sensitive mutants having a range of phenotypes.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcp.1040780312
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