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  • 1
    Electronic Resource
    Electronic Resource
    Infectivity and effectiveness of Glomus intraradices on micropropagated plants (1994)
    Springer
    Mycorrhiza 5 (1994), S. 29-37 
    Details
    ISSN: 1432-1890
    Keywords: Arbuscular mycorrhizal fungus ; Micropropagated plants
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Colonization by Glomus intraradices takes place very early within the root system of micropropagated plantlets of strawberry (var. avanta, elsanta), raspberry (var. himboqueen, Zeva I), and hortensia (var. leuchtfeuer). The arbuscular mycorrhizal fungus (AMF) did not colonize roots of the different hosts to the same extent, and considerable differences were observed between the varieties. The results reported here confirm that endomycorrhizal root colonization is affected by the host-fungus combination. The effects ranged from mutualistic (hortensia), through neutral (strawberry var. avanta, raspberry var. Zeva I) to negative (raspberry var. himboqueen and strawberry var. elsanta). Non-mycorrhized (control) plants of strawberry produced more runners than mycorrhized plants under controlled growth conditions (phytotron). Transfer of the potted plants to the field resulted in drastic alterations in overall growth and development within 4 weeks. Mycorrhized plants became healthy, and mycorrhized strawberry plants produced many stout runners. The number of the runners and their biomass were almost the same (var. avanta) and treated plants produced even more runners than the controls (var. elsanta). The authors have demonstrated the need to determine the specific effects of each species of AMF on individual prospective host plants prior to their utilization in the micropagation of plantlets.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00204017
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  • 2
    Electronic Resource
    Electronic Resource
    Infectivity and effectiveness of Glomus intraradices on micropropagated plants (1994)
    Springer
    Mycorrhiza 5 (1994), S. 29-37 
    Details
    ISSN: 1432-1890
    Keywords: Key words Arbuscular mycorrhizal fungus Micropropagated plants
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Colonization by Glomus intraradices takes place very early within the root system of micropropagated plantlets of strawberry (var. avanta, elsanta), raspberry (var. himboqueen, Zeva I), and hortensia (var. leuchtfeuer). The arbuscular mycorrhizal fungus (AMF) did not colonize roots of the different hosts to the same extent, and considerable differences were observed between the varieties. The results reported here confirm that endomycorrhizal root c olonization is affected by the host-fungus combination. The effects ranged from mutualistic (hortensia), through neutral (strawberry var. avanta, raspberry var. Zeva I) to negative (raspberry var. himboqueen and strawberry var. elsanta). Non-mycorrhized (control) plants of strawberry produced more runners than mycorrhized plants under controlled growth conditions (phytotron). Transfer of the potted plants to the field resulted in drastic alterations in overall growth and development within 4 weeks. Mycorrhi zed plants became healthy, and mycorrhized strawberry plants produced many stout runners. The number of the runners and their biomass were almost the same (var. avanta) and treated plants produced even more runners than the controls (var. elsanta). The authors have demonstrated the need to determine the specific effects of each species of AMF on individual prospective host plants prior to their utilization in the micropagation of plantlets.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s005720050038
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  • 3
    Electronic Resource
    Electronic Resource
    Occurrence of vesicular-arbuscular mycorrhizae with Amaranthaceae in soils of the Indian semi-arid region (1991)
    Springer
    Biology and fertility of soils 11 (1991), S. 140-144 
    Details
    ISSN: 1432-0789
    Keywords: Endogonaceous ; Vesicular-arbuscular mycorrhiza ; Endomycorrhiza ; Symbiosis ; Amaranthaceae ; Rhizosphere
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Some members of the family Amaranthaceae, which has mostly been reported as non-mycorrhizal, were examined for a symbiotic association with mycorrhizae in the semiarid and arid zones. Ten species belonging to five genera, Achyranthes, Aerva, Alternanthera, Amaranthus, and Celosia were examined, using 1.0-cm long root standards. Intercellular hyphae, vesicles and arbuscules were observed in the root cortex. The number of different types of spores in the rhizosphere soil of different plants ranged from one to three. The spores isolated represented nine species belonging to four genera, Glomus, Gigaspora, Sclerocystis, and Scutellospora. No correlation could be established between spore counts and either soil pH or soil moisture.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00336379
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  • 4
    Electronic Resource
    Electronic Resource
    Studies on the incorporation of labelled sulphate into cells and cell-free extracts of Nitrosomonas europaea (1970)
    Springer
    Archives of microbiology 73 (1970), S. 293-307 
    Details
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The incorporation of [35S]sulphate was followed into the washed cell suspensions of Nitrosomonas europaea. Thus bound sulphate, sulphite, sulphide, cysteine, glutathione, homocysteine and methionine were found in the ethanol soluble fraction as well as in the residual hydrolysed protein fraction. Cysteic acid, methionine sulphoxide and methionine sulphone were detected in the residual protein. The reaction between sulphydryl groups and N-ethylmaleimide has been successfully used to stabilize the thiol compounds in cell-extracts and the derivatives thus obtained were separated by paper chromatography. As in other microorganisms, sulphate is first activated by ATP in Nitrosomonas before it is reduced. The formation of APS and PAPS has been studied. A pathway for the incorporation of [35S]sulphate is proposed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00412296
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  • 5
    Electronic Resource
    Electronic Resource
    Metabolism of 35S-sulphate and properties of APS-kinase and PAPS-reductase in Nitrobacter agilis (1971)
    Springer
    Archives of microbiology 78 (1971), S. 99-117 
    Details
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The incorporation of [35S]-sulphate was followed into washed-cell suspensions of Nitrobacter agilis. Thus, bound sulphate, sulphite, sulphide, cysteine, glutathione, homocysteine, methionine and taurine were detected in the ethanol-soluble fraction as well as in the residual hydrolysed fraction. The reaction between thiol groups and N-ethylmaleimide has been successfully used to stabilize the SH-compounds in cell extracts, and the derivatives thus obtained were separated by paper chromatography. A soluble enzyme system catalyzing the reduction of sulphate to sulphite has been prepared. As a result of DEAE-cellulose-11 column chromatography, the enzyme complex was cleaved into two protein bands, one containing ATP-sulphurylase and the other APS-kinase and PAPS-reductase. The last two enzymes were further purified by DEAE-sephadex and Sephadex G-150 column chromatography. At pH 7.6 the enzymes show maximal activity in the presence of ATP and an ATP-generating system (creatine phosphate and creatine phosphokinase), APS, NADP+, a NADP+-reducing system (glucose-6-phosphate and a glucose-6-phosphate dehydrogenase) and MgCl2. Addition of small amounts of 2,3-dimercaptopropan-1-ol (BAL) to the buffers stabilized the enzymes and enabled them to be dialyzed for 16 h, without loss of activity. Anaerobic conditions are required for maximal activity. The optimum concentration of various cofactors for enzyme activity has been determined. The K m values are as follows: ATP, 1.3×10-3 M; APS, 1.6×10-4 M and NADP+, 1.8×10-3 M. The molecular weight of the APS-kinase and PAPS-reductase complex is about 280000. The PCMB inhibition of the two enzymes is reversed by adding GSH, L-cysteine and Cleland's reagent.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00424867
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  • 6
    Electronic Resource
    Electronic Resource
    Combustion synthesis of the YBa"2Cu"3O"7"-"x superconductor
    Amsterdam : Elsevier
    Physica C: Superconductivity and its applications 184 (1991), S. 220-228 
    Details
    ISSN: 0921-4534
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0921-4534(91)90386-D
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  • 7
    Electronic Resource
    Electronic Resource
    Paper mill sludge as a potential source for cellulase production by Trichoderma reesei QM 9123 and Aspergillus niger using mixed cultivation
    Amsterdam : Elsevier
    Carbohydrate Polymers 23 (1994), S. 161-163 
    Details
    ISSN: 0144-8617
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0144-8617(94)90098-1
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  • 8
    Electronic Resource
    Electronic Resource
    Upper and lower bounds from the maximum principle. Intracellular diffusion with michaelis-menten kinetics
    Amsterdam : Elsevier
    Bulletin of Mathematical Biology 51 (1989), S. 325-335 
    Details
    ISSN: 0092-8240
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0092-8240(89)80079-5
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  • 9
    Electronic Resource
    Electronic Resource
    Upper and lower bounds from the maximum principle. Intracellular diffusion with michaelis-menten kinetics
    Amsterdam : Elsevier
    Bulletin of Mathematical Biology 51 (1989), S. 325-335 
    Details
    ISSN: 0092-8240
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0092-8240(89)80079-5
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  • 10
    Electronic Resource
    Electronic Resource
    An in situ diffuse reflectance FTIR investigation of photocatalytic degradation of 4-chlorophenol on a TiO"2 powder surface
    Amsterdam : Elsevier
    Chemical Physics Letters 205 (1993), S. 55-61 
    Details
    ISSN: 0009-2614
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0009-2614(93)85166-L
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