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  • germacranolides  (4)
  • N2-fixation  (3)
  • Nitrogen fixation  (3)
  • Nostoc muscorum  (3)
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Materialart
Erscheinungszeitraum
Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    Further ineupatorolide-like germacranolides from Inula cuspidata
    Amsterdam : Elsevier
    Phytochemistry 21 (1982), S. 157-160 
    Details
    ISSN: 0031-9422
    Schlagwort(e): Compositae ; Inula cuspidata ; acetylenic sulfoxides. ; germacranolides ; hydroxygermacrene ; sesquiterpene lactones
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Biologie , Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://linkinghub.elsevier.com/retrieve/pii/0031-9422(82)80034-4
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  • 2
    Digitale Medien
    Digitale Medien
    Germacranolides from Dicoma tomentosa
    Amsterdam : Elsevier
    Phytochemistry 21 (1982), S. 2122-2124 
    Details
    ISSN: 0031-9422
    Schlagwort(e): Compositae ; Dicoma tomentosa ; Mutisieae ; germacranolides ; melampolides. ; sesquiterpene lactones
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Biologie , Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://linkinghub.elsevier.com/retrieve/pii/0031-9422(82)83062-8
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  • 3
    Digitale Medien
    Digitale Medien
    New germacranolides and other sesquiterpene lactones from Dicoma species
    Amsterdam : Elsevier
    Phytochemistry 21 (1982), S. 2029-2033 
    Details
    ISSN: 0031-9422
    Schlagwort(e): Compositae ; D. anomala subsp. cirsioides ; D. macrocephala ; D. schinzii ; D. zeyheri ; Dicoma anomala subsp. anomala ; Mutisieae ; acetylenic compounds. ; eudesmanolide ; germacranolides ; guaianolide ; sesquiterpene lactones
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Biologie , Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://linkinghub.elsevier.com/retrieve/pii/0031-9422(82)83037-9
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  • 4
    Digitale Medien
    Digitale Medien
    Acanthospermolides and other constituents from Blainvillea acmella
    Amsterdam : Elsevier
    Phytochemistry 24 (1985), S. 2023-2028 
    Details
    ISSN: 0031-9422
    Schlagwort(e): Blainvillea acmella ; Compositae ; acanthospermolides. ; germacranolides ; melampolides ; ovatifolin derivatives ; sesquiterpene lactones
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Biologie , Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0031-9422(00)83115-5
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  • 5
    Digitale Medien
    Digitale Medien
    Nitrogen fixation and balance studies of rice soil (1987)
    Springer
    Biology and fertility of soils 4 (1987), S. 15-19 
    Details
    ISSN: 1432-0789
    Schlagwort(e): Nitrogen fixation ; N-balance studies ; Azolla ; Blue-green algae ; Chemical N fertilization ; Rice
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Geologie und Paläontologie , Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary A nitrogen balance study conducted in ceramic pots under net house conditions for four seasons showed that flooded rice soil leaves a positive nitrogen balance (N increase) in soil after rice cropping in both fertilized and unfertilized soil. Recovery of nitrogen from rice soil was more than its input in unfertilized soil, but it was reverse in fertilized soil. Incorporation of Azolla or BGA twice as basal and 20 days after transplanting (DAT) alone or in combination showed higher nitrogen balance and N2-fixation (N gain) in soil than in that where it was applied once either as basal or 20 DAT. Planted soil showed more N2-fixation than that of fallow rice, and flooded soil fixed more nitrogen in comparison to non-flooded soil in light but less in dark. Soil exposed to light fixed more nitrogen than that of unexposed soil in both flooded and non-flooded conditions.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00280345
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  • 6
    Digitale Medien
    Digitale Medien
    Growth and acetylene reduction activity ofAzolla caroliniana Willd. as influenced by split applications of urea fertilizer and their response on rice yield (1988)
    Springer
    Nutrient cycling in agroecosystems 18 (1988), S. 189-199 
    Details
    ISSN: 1573-0867
    Schlagwort(e): Azolla caroliniana ; N2-fixation ; rice yield ; crop N uptake
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Abstract Experiment with different split applications of 40 kg N ha−1 of urea (U) at transplanting:30 days after transplanting:40 days before crop maturity with different proportions of 50:25:25, 25:50:25 and 0:50:50 splits, with and without Azolla, carried out for two consecutive seasons, revealed that fresh weight (FW), N2-fixation measured by acetylene reduction activity (ARA) and N yield of newly introducedAzolla caroliniana were higher with 0:50:50 treatment followed by 25:50:25 and 50:25:25.Azolla was unincorporated and left for self decomposition. The crop yield (grain yield, straw yield) and crop N uptake data indicated that among the no Azolla treatments, the use of 50:25:25 split resulted in highest crop yield and crop N uptake followed by 25:50:25 and 0:50:50 treatments, while these parameters recorded maximum value with 25:50:25 split in combination with Azolla followed by 50:25:25 and 0:50:50 treatments. The use of Azolla increased crop yield and crop N uptake significantly over no Azolla treatments.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01049513
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  • 7
    Digitale Medien
    Digitale Medien
    Effects of host aging, ions, and pH on the adsorption of the cyanovirus N-1 to Nostoc muscorum (1978)
    Springer
    Archives of microbiology 116 (1978), S. 289-292 
    Details
    ISSN: 1432-072X
    Schlagwort(e): Blue-green algal virus N-1 ; Adsorption ; Host cell aging ; Killed cells ; Saline magnesium chloride solution ; Amino acids ; pH ; Nostoc muscorum
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The adsorption rate of the cyanovirus N-1 infecting the nitrogen-fixing blue-green alga Nostoc muscorum decreased with aging of algal cultures and the virus failed to adsorb to the dead host cells. The adsorption rate declined in saline magnesium chloride solution compared to that in algal growth medium. The addition of amino acids like L-tryptophan and L-phenylalanine failed to enhance the adsorption rate of the virus. Optimal pH of adsorption was 7.6 to 8.1.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00417853
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  • 8
    Digitale Medien
    Digitale Medien
    Lysogeny in the blue-green algaNostoc muscorum (1978)
    Springer
    Archives of microbiology 117 (1978), S. 265-268 
    Details
    ISSN: 1432-072X
    Schlagwort(e): Nostoc muscorum ; Blue-green Algal virus ; N-1 ; Lysogeny ; Induction ; Heat ; Mitomycin C
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Lysogens were isolated after confluent lysis of the blue-green algaNostoc muscorum by N-1 virus and characterised. The spontaneous liberation of active virus particles in lysogens was not lost after treating them with viricidal concentration of EDTA and virus titre obtained in their cultures was 〉5×103 PFU/ml. The virus adsorbed on the lysogens with a slower rate than on parent alga, although it followed the pattern of a first order reaction. The heat treatment (45°C for 14h) of the lysogens failed to induce lysis, whereas mitomycin C (1–2 μg/ml) was effective in inducing lysis.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00738545
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  • 9
    Digitale Medien
    Digitale Medien
    Isolation of gas vacuole-less mutants of the blue-green alga Anabaenopsis raciborskii (1976)
    Springer
    Archives of microbiology 111 (1976), S. 195-196 
    Details
    ISSN: 1432-072X
    Schlagwort(e): Mutation ; Blue-green alga ; Anabaenopsis raciborskii ; Gas vacuole ; Nitrogen fixation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract From a bloom forming blue-green alga, Anabaenopsis raciborskii, spontaneous mutants, which had lost the ability to form gas vacuoles have been isolated; the mutant frequency was 4.8×10-3. The filaments of gas vacuole-less mutants settled at the bottom of flasks in liquid culture media unlike the parent alga. The growth and nitrogen fixation were comparatively poor in the mutants.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00446569
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  • 10
    Digitale Medien
    Digitale Medien
    Effect of temperature on the adsorption and one-step growth of the Nostoc virus N-1 (1977)
    Springer
    Archives of microbiology 115 (1977), S. 163-167 
    Details
    ISSN: 1432-072X
    Schlagwort(e): Nostoc virus N-1 ; Temperature ; Adsorption ; One-step growth ; Viral development ; Nostoc muscorum
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract This study was an attempt to observe the effects of temperature on adsorption and one-step growth of the virus N-1 infecting the nitrogen-fixing cyanobacterium Nostoc muscorum. Adsorption rate was found to be maximum at 40° C whereas no adsorption occurred at 10° C. The Q 10 value was about 2.03 and the energy of activation, Ea was 16.3 kcal/ mole for the adsorption process. The development cycle of the virus was temperature sensitive. With increase in temperature, a gradual increase in inhibition of virus yield i.e. 8.33% at 30° C, 35.3% at 35° C and complete inhibition at 40° C was observed. Out of 7 h latent period, the early 4 h were temperature sensitive and heat treatment had a reversible inhibitory effect on virus development. The temperature treatment did not affect the rise period but burst-size was reduced.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00406370
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