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  • Salinity  (8)
  • Dendroctonus brevicomis  (6)
  • Springer  (14)
  • American Association for the Advancement of Science
  • American Physical Society
  • International Union of Crystallography
  • Springer Nature
  • Wiley
  • 1980-1984  (14)
  • 1981  (5)
  • 1980  (9)
Collection
Keywords
Publisher
  • Springer  (14)
  • American Association for the Advancement of Science
  • American Physical Society
  • International Union of Crystallography
  • Springer Nature
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Years
  • 1980-1984  (14)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Interspecific inhibition of the response of the bark beetles,Dendroctonus brevicomis andIps paraconfusus, to their pheromones in the field (1980)
    Springer
    Journal of chemical ecology 6 (1980), S. 149-164 
    Details
    ISSN: 1573-1561
    Keywords: Dendroctonus brevicomis ; Ips paraconfusus ; Pinus ponderosa ; bark beetle ; exo-brevicomin ; frontalin ; myrcene ; verbenone ; trans-verbenol ; attractants ; inhibition ; pheromones
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987534
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  • 2
    Electronic Resource
    Electronic Resource
    Estimating western pine beetle-caused tree mortality for evaluating an attractive pheromone treatment (1980)
    Springer
    Journal of chemical ecology 6 (1980), S. 853-866 
    Details
    ISSN: 1573-1561
    Keywords: Ponderosa pine mortality ; Dendroctonus brevicomis ; Coleoptera ; Scolytidae ; aerial photography ; detection ; estimation ; sampling ; mapping ; attractive pheromones
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Sequential aerial photography was used to detect ponderosa pine trees killed by successive generations of the western pine beetle (WPB),Dendroctonus brevicomis Lec., over a three-year period during a study to evaluate the effectiveness of attractive pheromones for the suppression and survey of WPB. The total number of WPB-killed trees were estimated for each generation, using probability-proportional-to-size sampling procedures. Infested trees at the beginning of the suppression treatment totaled 283. Attacks by three successive WPB generations in 1970 killed 90,83, and 91 trees, respectively. The first generation in 1971 killed 47 trees and the two subsequent generations combined killed a total of 49 trees. During the suppression treatment, tree mortality was concentrated into the suppression plots in comparison to the check plots and the surrounding area. By 1972, tree mortality distribution returned to its original pattern, but at one-tenth the original level, as shown by maps. Recommendations suggest ways to improve the use of aerial photography for studies of WPB-caused tree mortality and population dynamics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00990469
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  • 3
    Electronic Resource
    Electronic Resource
    Steady state osmotic adaptation inUlva lactuca (1980)
    Springer
    Planta 150 (1980), S. 158-165 
    Details
    ISSN: 1432-2048
    Keywords: β-Dimethylsulphoniopropionate ; Osmoregulation ; Ion relations ; Salinity ; Ulva
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The effects of hyper- and hypo-saline stresses on the levels of various inorganic and organic solutes inUlva lactuca have been recorded. Hypoosmotic stress decreased the tissue concentration of K+, Na+ and Cl- while hyper-osmotic stress caused a transient increase in Na+ and a stable accumulation of K+ and Cl-. The tissue content of β-dimethylsulphoniopropionate (β-dimethylpropiothetin) responded to changes in salinity. The time course of hypersaline stress showed the β-dimethylsulophoniopropionate concentration rose as the Na+ level fell. The levels of free sugars and amino acids, including proline, were relatively low in this alga and did not appear to be important in osmotic adjustment. The possibility that tertiary sulphonium dipolar ions have an analogous role in some algae to glycinebetaine and possibly other quaternary nitrogen compounds in higher plants as cytoplasmic osmotica is discussed briefly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00582360
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  • 4
    Electronic Resource
    Electronic Resource
    Rhizosphere salinity and phytoalexin accumulation in soybean (1980)
    Springer
    Plant and soil 54 (1980), S. 163-167 
    Details
    ISSN: 1573-5036
    Keywords: Phytoalexin ; Phytophthora megasperma ; Salinity ; Soybean ; Rhizosphere
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Rhizosphere salinity decreased the capacity of soybean to accumulate a pterocarpanoid phytoalexin (glyceollin) in the stem in response toPhytophthora megasperma var.sojae. Rapid (48h) accumulation was depressed by NaCl, Na2SO4, CaCl2 and MgSO4 applications. Time-course accumulations was slowed by applications. Time-course accumulation was slowed by application of 0.131M NaCl. Glyceollin accumulation was also reduced in plants subjected to a period of high salinity stress (0.177M NaCl, 72 h) after a period of nonsalinized growth. Calcium chloride completely suppressed glyceollin accumulation in normally-resistant plants but no susceptibility to the fungus was observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02182010
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  • 5
    Electronic Resource
    Electronic Resource
    Growth of ornamental plants irrigated with nutrient or polyethylene glycol solutions of different osmotic potentials (1980)
    Springer
    Plant and soil 56 (1980), S. 99-111 
    Details
    ISSN: 1573-5036
    Keywords: Aster ; Bedding plants ; Celosia ; Coleus ; Growth effects ; Marigold ; NPK solutions ; Osmotic stress ; Petunia ; Polyethylene glycol ; Salinity ; Snapdragon
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Six ornamental species (Petunia hybrida, Callistephus hortensis, Coleus blumei, Celosia pyramidalis, Antirrhinum majus andTagetes erecta) were grown in solutions containing high concentrations of polyethylene glycol (MW 4000) or of Nitrogen: Phosphorus: Potassium. At equal osmotic potentials, top dry weight, leaf area and leaf elongation rate were all reduced more by polyethylene glycol than by NPK. Polyethylene glycol also produced some leaf damage which did not occur with NPK solutions. Osmotic potentials of −600 kPa due to NPK reduced growth of the six species by at least 25% compared with growth of control plants (at −20 kPa). Tolerance ranking to high fertilizer in the irrigation solution increased from Snapdragon (most sensitive), Marigold Coleus, Aster, Celosia and Petunia (most tolerant).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02197957
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  • 6
    Electronic Resource
    Electronic Resource
    Microbial responses to salt-induced osmotic stress (1981)
    Springer
    Plant and soil 63 (1981), S. 415-426 
    Details
    ISSN: 1573-5036
    Keywords: Bacteria ; Direct observation ; Rhizoplane ; Rhizospher ; Root region ; Salinity ; Salt stress
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Balanced and unbalanced high-salt solutions were used to investigate the effects of osmotic stress on microbial activity in the rhizoplane and rhizosphere of barley. Bacteria in the root regions proved sensitive to both high (−1500 kPa) and low (−500 kPa) levels of each type of stress, but bacterial growth was most severely inhibited in the unbalanced treatments both of which contained high levels of sodium. Similar effects of stress were noted with barley. Distinct qualitative changes in microbial populations in the root zones were observed in the balanced stress treatments, but an increase in species diversity did not occur in the rhizoplane or rhizosphere following exposure to the unbalanced, high-sodium solutions. After five weeks of stress, a marked but transitory rise in rhizoplane counts accompanied death of the seedlings in the −1500 kPa, high-sodium treatment indicating that at least some of the soil bacteria retain the potential for rapid growth at high salt concentrations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02370041
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  • 7
    Electronic Resource
    Electronic Resource
    Interspecific effects of pheromones on the attraction of the bark beetles,Dendroctonus brevicomis andIps paraconfusus in the laboratory (1981)
    Springer
    Journal of chemical ecology 7 (1981), S. 9-18 
    Details
    ISSN: 1573-1561
    Keywords: Dendroctonus brevicomis ; Ips paraconfusus ; Coleoptera ; Scolytidae ; Pinus ponderosa ; bark beetle ; exo-brevicomin ; frontalin ; myrcene ; verbenone ; ipsenol ; ipsdienol ; cis-verbenol ; attractants ; inhibition ; semiochemicals ; pheromones
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00988631
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  • 8
    Electronic Resource
    Electronic Resource
    Field responses of the western pine beetle1 and one of its predators to host- and beetle-produced compounds (1980)
    Springer
    Journal of chemical ecology 6 (1980), S. 625-641 
    Details
    ISSN: 1573-1561
    Keywords: Pinus ponderosa ; Dendroctonus brevicomis ; Temnochila chlorodia ; pheromone ; kairomone ; exo-bievicomm ; frontalin ; trans-ver-benol ; verbenone ; terpenes ; Coleoptera ; Scolytidae ; Trogositidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The responses of the western pine beetle (Dendroctonus brev-icomis LeConte) andTemnochila chlorodia (Mannerheim) to candidate attractants—exo- andendo-brevicomm, frontalin,trans-verbenol, ver-benone, and ponderosa pine turpentine and its major monoterpene components—were quantified by counts of beetles on traps baited with the various attractants, singly and in combinations released simultaneously. Combinations ofexo-brevicomin and frontalin plus a monoterpene or turpentine were the most attractive toD. brevicomis. The responses to these attractant combinations were reduced when verbenone plustrans-verbenol were present. All single compounds and binary mixtures, exceptexo-brevicomin plus frontalin, were much less attractive.exo-Brevicomin was most attractive toT. chlorodia, and this response appeared to decrease when verbenone plustrans-verbenol were present.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987674
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  • 9
    Electronic Resource
    Electronic Resource
    Effects of verbenone andtrans-verbenol on the response ofDendroctonus brevicomis to natural and synthetic attractant in the field (1980)
    Springer
    Journal of chemical ecology 6 (1980), S. 997-1013 
    Details
    ISSN: 1573-1561
    Keywords: Pinus ponderosa ; Dendroctonus brevicomis ; verbenone ; trans-verbenol ; tree protection ; bark beetle ; pheromones ; interruptant ; Coleoptera ; Scolytidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Verbenone andtrans-verbenol were investigated as candidate interruptants for use as tree protectants. Verbenone andtrans-verbenol, pheromones released byDendroctonus brevicomis during host colonization, reduced the trap catch ofD. brevicomis near sources of the attractant composed ofexo-brevicomm, frontalin, and myrcene. Catch reduction at some trap positions was greater at a high release rate than at a low release rate oftrans-verbenol alone and of the combination of verbenone plustrans-verbenol. Verbenone also reduced catches at traps baited with attractive bolts from trees under attack byD. brevicomis. Attempts to use verbenone to protect living trees fromD. brevicomis attack were inconclusive.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00994657
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  • 10
    Electronic Resource
    Electronic Resource
    Influence of salinity on mineral nutrition of peanut (Arachis hypogea L.) (1980)
    Springer
    Plant and soil 54 (1980), S. 5-13 
    Details
    ISSN: 1573-5036
    Keywords: Arachis hypogea ; Mineral nutrition ; Peanut ; Salinity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Effect of sodium chloride and sodium sulphate salinities on growth and mineral nutrition of peanut (A. hypogea L.) variety TMV-10 has been studied. Both salts suppressed growth of the plants. The inorganic analysis revealed that NaCl and Na2SO4 caused accumulation of Na, P, Fe and Mn in root, stem, leaf and gynophore. NaCl treatment caused accumulation of Cl in these parts. The uptake of K was hampered by both salts whereas Ca uptake was retarded mainly by Na2SO4. The results are discussed in relation to the salt tolerance capacity of the plant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02181995
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