ALBERT — All Library Books, journals and Electronic Records Telegrafenberg

1

Digitale Medien

Repellency of pheromones released by females of Heliothis armigera and H. zea to females of both species (1981)

Saad, Abdalla D. ; Scott, D. R.

Springer

Entomologia experimentalis et applicata 30 (1981), S. 123-127

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1570-7458

Schlagwort(e): Sex Pheromones ; Repellent ; Heliothis armigera ; Heliothis zea ; Lepidoptera ; Noctuidae ; cotton bollworm ; corn earworm

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie

Beschreibung / Inhaltsverzeichnis: Résumé L'examen en olfactomètre a porté sur les réactions face à d'autres femelles de la même espèce, de femelles vierges ou ayant copulé d'Heliothis armigera Hübner et H. zea Boddie. Le lot comprenait 8 femelles, vierges ou ayant copulé en présence d'une femelle vierge ou ayant copulé. Les 4 combinaisons possibles de femelles vierges et de femelles ayant copulé ont été examinées avec 12 répétitions pour chaque espèce. Un extrait de l'extrémité de l'abdomen de femelles vierges d'une espèce a été présenté aux femelles de l'autre espèce pour examiner les possibilités de réactions interspécifiques aux phéromones. Pour chaque espèce, les réactions interspécifiques de répulsion entre femelles ont été hautement significatives par rapport aux témoins, à l'exception toutefois des réactions de femelle ayant copulé face à des femelles ayant elles aussi copulé. Les répulsions moyennes chez H. armigera et H. zea pour les 8 femelles de chaque expérience ont été: a) vierges en présence d'une vierge: 7,33 et 7,66; b) vierges en présence d'une femelles ayant copulé: 5,76 et 5,58; c) femelles ayant copulé en présence d'une vierge: 4,67 et 4,83. Les différences sont hautement significatives entre chaque paire de moyennes et entre chaque paire et le lot témoin; 3,17; 3,17; 3,42; 4,00 pour H. armigera; 3,17; 3,50; 2,83 et 3,75 pour H. zea. Les femelles vierges des deux espèces, H. armigera et H. zea ont présenté une réaction de répulsion en présence d'un extrait de l'abdomen de l'autre espèce; les répulsions moyennes étant respectivement 5,53 et 5,33 contre 3,83 et 3,58 pour le lot trémoin. On peut en conclure que ces répulsions doivent entraîner une tendance à la répartition uniforme.

Notizen: Abstract An olfactometer was used to determine the effect of pheromones released by females of the bollworms Heliothis armigera (Hübner) and H. zea (Boddie) on females of the same species. Four combinations of virgin and mated females were tested for repellency of one to the other. Evidence is presented that females of the two bollworms were repelled by females of the same species. In addition, extracts of virgin female abdomens of each species repelled virgin females of the other species.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00300876

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

2

Digitale Medien

Interaction of [3H]gibberellin A1 with a sub-cellular fraction from lettuce (Lactuca sativa L.) hypocotyls (1980)

Stoddart, John L. ; Williams, Paul D.

Springer

Planta 148 (1980), S. 485-490

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1432-2048

Schlagwort(e): Gibberellin ; Growth temperature ; Lactuca ; Temperature (gibberellin)

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie

Notizen: Abstract The relationship between elongation growth and the incorporation of [3H]gibberellin A1 ([3H]GA1) into a 2,000g pelletable (2KP) fraction from lettuce (Lactuca sativa L., cv. Arctic) hypocotyl sections has been examined. Sections were loaded with incremental amounts of GA1 under conditions where growth was arrested (5° C) or permitted (30° C) and, after 16 h, all were transferred to a GA-free medium at 30° C. Growth and 2KP radioactivity were measured at this point and after a further 24 h in the chase medium. Uptake was reduced by 80% at 5° C, as compared to 30° C, but 2KP labelling and protein synthesis were only reduced by half. The growth rate of the 5° C pretreated sections during the chase period was comparable to that observed during the pulse in the 30° C material but the dose/response relationship was flatter. Low temperature sections incorporated a much higher percentage of GA1 uptake into the 2KP fraction (27% at maximum) but the absolute levels of labelling at this temperature were lower than those measured at 30° C. The data are interpreted as showing that 2KP labelling is not a consequence of growth. It must either precede response or be an unconnected concurrent process.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02395319

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

3

Digitale Medien

Gibberellins and the photoperiodic control of stem elongation in the long-day plant Agrostemma githago L. (1980)

Jones, M. G. ; Zeevaart, J. A. D.

Springer

Planta 149 (1980), S. 269-273

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1432-2048

Schlagwort(e): Agrostemma ; Gibberellin ; Growth retardant ; Photoperiodism ; Stem elongation

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie

Notizen: Abstract Agrostemma githago is a long-day rosette plant in which transfer from short days (SD) to long days (LD) results in rapid stem elongation, following a lag phase of 7–8 d. Application of gibberellin A20 (GA20) stimulated stem elongation in plants under SD, while 2-isopropyl-4-dimethylamino-5-methylphenyl-1-piperidine-carboxylate methyl chloride (AMO-1618, an inhibitor of GA biosynthesis) inhibited stem elongation in plants exposed to LD. This inhibition of stem elongation by AMO-1618 was overcome by simultaneous application of GA20, indicating that GAs play a role in the photoperiodic control of stem elongation in this species. Endogenous GA-like substances were analyzed using reverse-phase high-performance liquid chromatography and the d-5 corn (Zea mays L.) assay. Three zones with GA-like activity were detected and designated, in order of decreasing polarity, as A, B, and C. A transient, 10-fold increase in the activity of zone B occurred after 8–10 LD, coincident with the transition from lag phase to the phase of rapid stem elongation. After 16 LD the activity in this zone had returned to a level similar to that under SD, even though the plants were elongating rapidly by this time. However, when AMO-1618 was applied to plants after 11 LD, there was a rapid reduction in the rate of stem elongation, indicating that continued GA biosynthesis was necessary following the transient increase in activity of zone B, if stem elongation was to continue under LD. It was concluded that control of stem elongation in A. githago involves more than a simple qualitative or quantitative change in the levels of endogenous GAs, and that photoperiodic induction alters both the sensitivity to GAs and the rate of turnover of endogenous GAs.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00384564

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

4

Digitale Medien

The effect of photoperiod on the levels of seven endogenous gibberellins in the long-day plant Agrostemma githago L. (1980)

Jones, M. G. ; Zeevaart, J. A. D.

Springer

Planta 149 (1980), S. 274-279

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1432-2048

Schlagwort(e): Agrostemma ; Gibberellin ; Photoperiodism ; Stem elongation

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie

Notizen: Abstract The following seven gibberellins (GAs) have been identified by gas chromatography-mass spectrometry in shoots and leaves of the long-day plant Agrostemma githago: GA53, GA44, GA19, GA17, GA20, GA1, and 3-epi-GA1. The levels of these compounds were measured, using selected ion monitoring, during photoperiodic induction. The levels of GA44, GA19, GA17, and GA20 all increased to a peak at eight long days (LD), followed by a decline, while the levels of GA1 and 3-epi-GA1 did not reach a peak until 12 LD. The level of GA53 remained steady over the first 10–12 LD. Later in the LD treatment the levels of GA53, GA44, GA19, and GA17 increased again. The rate of metabolism of all GAs except GA53 was higher after 12–16 LD than under short days. These data thus provide indirect evidence for an effect of photoperiodic induction on GA turnover in A. githago.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00384565

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

5

Digitale Medien

Ethylene, gibberellins, auxin and the apical control of branch angle in a conifer, Cupressus arizonica (1980)

Blake, T. J. ; Pharis, R. P. ; Reid, D. M.

Springer

Planta 148 (1980), S. 64-68

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1432-2048

Schlagwort(e): Auxin ; Branch angle ; Conifers ; Cupressus ; Ethylene ; Gibberellin ; Hyponasty

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie

Notizen: Abstract Decapitation, gibberellin A3, high light, their combination, and certain levels of indole-3-acetic acid increase ethylene evolution and also induce branch hyponasty (upturning) in seedlings of Cupressus arizonica Greene, the increase in ethylene preceding obvious hyponasty. Exogenous ethylene also causes branch hyponasty and branches of seedlings maintained in an atmosphere scavenged of ethylene by mercuric perchlorate grow downwards. It is concluded that ethylene may play a role in the apical control of branch angle in some conifers. The positive effect of ethylene in increasing branch hyponasty may be direct, or reflect changes in levels of endogenous auxin and/or gibberellin.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00385443

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

6

Digitale Medien

Interaction of [3H]gibberellin A1 with a sub-cellular fraction from lettuce (Lactuca sativa L.) hypocotyls (1980)

Stoddart, John L. ; Williams, Paul D.

Springer

Planta 148 (1980), S. 485-490

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1432-2048

Schlagwort(e): Gibberellin ; Growth temperature ; Lactuca ; Temperature (gibberellin)

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie

Notizen: Abstract The relationship between elongation growth and the incorporation of [3H]gibberellin A1 ([3H]GA1) into a 2,000g pelletable (2KP) fraction from lettuce (Lactuca sativa L., cv. Arctic) hypocotyl sections has been examined. Sections were loaded with incremental amounts of GA1 under conditions where growth was arrested (5° C) or permitted (30° C) and, after 16 h, all were transferred to a GA-free medium at 30° C. Growth and 2KP radioactivity were measured at this point and after a further 24 h in the chase medium. Uptake was reduced by 80% at 5° C, as compared to 30° C, but 2KP labelling and protein synthesis were only reduced by half. The growth rate of the 5° C pretreated sections during the chase period was comparable to that observed during the pulse in the 30° C material but the dose/response relationship was flatter. Low temperature sections incorporated a much higher percentage of GA1 uptake into the 2KP fraction (27% at maximum) but the absolute levels of labelling at this temperature were lower than those measured at 30° C. The data are interpreted as showing that 2KP labelling is not a consequence of growth. It must either precede response or be an unconnected concurrent process.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00552664

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

7

Digitale Medien

Interspecific inhibition of the response of the bark beetles,Dendroctonus brevicomis andIps paraconfusus, to their pheromones in the field (1980)

Byers, J. A. ; Wood, D. L.

Springer

Journal of chemical ecology 6 (1980), S. 149-164

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1573-1561

Schlagwort(e): Dendroctonus brevicomis ; Ips paraconfusus ; Pinus ponderosa ; bark beetle ; exo-brevicomin ; frontalin ; myrcene ; verbenone ; trans-verbenol ; attractants ; inhibition ; pheromones

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Chemie und Pharmazie

Notizen: Abstract Ponderosa pine logs infested withIps paraconfusus males inhibited the attraction ofDendroctonus brevicomis in the field to either attractive logs cut from a ponderosa pine tree under attack byD. brevicomis or to their synthetic pheromones,exo-brevicomin, frontalin, and myrcene. Logs cut from trees under attack byD. brevicomis inhibited the response ofI. paraconfusus to logs infested with maleI. paraconfusus.Exo-brevicomin, frontalin, and myrcene did not inhibit their response but verbenone did. Verbenone was found in maleD. brevicomis dissected from attractive logs under attack during the same time the response ofI. paraconfusus was inhibited by these logs.Trans-verbenol andexo-brevicomin were found in femaleD. brevicomis while verbenone,trans-verbenol, and frontalin were found in maleD. brevicomis in relatively large amounts near the beginning of the aggregation phase of host colonization. All of these compounds had decreased at a similar rate 5 days later. This gradual decrease inexo-brevicomin and frontalin probably caused the observed reduction in attraction. The ecological significance of these compounds in relation to termination of the aggregation phase ofD. brevicomis and reduction of interspecific competition is discussed.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00987534

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

8

Digitale Medien

Optimized conditions for sex attractant trapping of male redbacked cutworm moths,Euxoa ochrogaster (Guenée) (1980)

Steck, Warren ; Chisholm, M. D. ; Underhill, E. W. ; [weitere]

Springer

Journal of chemical ecology 6 (1980), S. 585-591

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1573-1561

Schlagwort(e): Sex attractant ; trapping ; redbacked cutworm moth ; Euxoa ochrogaster ; Lepidoptera ; Noctuidae ; (Z)-5- and (Z)-7-dodecenyl acetates

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Chemie und Pharmazie

Notizen: Abstract Mixtures of (Z)-5- and (Z)-7-dodecenyl acetates in ratios 〉100∶1 are powerful, specific sex attractants for redbacked cutworm male moths. Bioactive lures were produced by admixture of these pure compounds or through syntheses involving catalytic bond shifting. Best field trapping was obtained with 200∶1 (Z)-5∶(Z)-7 ratio, at lure doses (on rubber) of 0.1–2.0 mg, using cone swivel traps with 10- to 13-mm orifices, or Pherocon® 1-CP sticky traps, at a height of 50–90 cm. The pheromone traps were more efficient than large blacklight traps and captured the various morphological forms of the moth in similar ratios.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00987670

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

9

Digitale Medien

Interspecific effects of pheromones on the attraction of the bark beetles,Dendroctonus brevicomis andIps paraconfusus in the laboratory (1981)

Byers, J. A. ; Wood, D. L.

Springer

Journal of chemical ecology 7 (1981), S. 9-18

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1573-1561

Schlagwort(e): Dendroctonus brevicomis ; Ips paraconfusus ; Coleoptera ; Scolytidae ; Pinus ponderosa ; bark beetle ; exo-brevicomin ; frontalin ; myrcene ; verbenone ; ipsenol ; ipsdienol ; cis-verbenol ; attractants ; inhibition ; semiochemicals ; pheromones

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Chemie und Pharmazie

Notizen: Abstract Dendroctonus brevicomis was attracted to a mixture of theIps paraconfusus pheromones, ipsenol,cis-verbenol, and ipsdienol at 10−9 g each/μl but was not attracted to these pheromones at higher and lower release rates.I. paraconfusus was not attracted to theD. brevicomis pheromonesexo-brevicomin, frontalin, and myrcene at any release rate tested. Increased release rates of a mixture of the three pheromones ofI. paraconfusus inhibited the attraction ofD. brevicomis to its synthetic pheromones. A mixture of ipsenol + ipsdienol orcis-verbenol alone failed to cause inhibition indicating that at least two of theI. paraconfusus pheromones are required to inhibit the response ofD. brevicomis. The pheromones ofD. brevicomis did not inhibit the attraction ofI. paraconfusus to its pheromones; however, verbenone was a potent inhibitor.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00988631

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

10

Digitale Medien

Synthesis of sex pheromone components of the forest tent caterpillar,Malacosoma disstria (Hübner) and of the western tent caterpillar,Malacosoma californicum (Packard) (1981)

Chisholm, M. D. ; Steck, W. F. ; Bailey, B. K. ; [weitere]

Springer

Journal of chemical ecology 7 (1981), S. 159-164

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1573-1561

Schlagwort(e): Synthesis ; isomers ; 5,7-dodecadienal ; sex pheromone ; Malacosoma disstria ; Malacosoma californicum ; Lepidoptera ; Lasiocampidae

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Chemie und Pharmazie

Notizen: Abstract All four geometrical isomers of 5,7-dodecadien-1-ol have been stereoselectively synthesized by using Wittig condensation reactions. (5 Z,7E)-5,7-Dodecadien-1-ol and its corresponding aldehyde are components of the sex pheromone of the forest tent caterpillar. (5 E,7 Z)-5,7-Dodecadienal is a component of the pheromone of the western tent caterpillar. These compounds have been successfully tested in the field.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00988643

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext