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  • 1
    Electronic Resource
    Electronic Resource
    Comparative study on artemisinin, 2,4-D and glyphosate (1991)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 39 (1991), S. 991-994 
    Details
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf00005a038
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Chlorophyllous Nature and Growth Characteristics of Teratoma and Habituated Tissue Cultures of Tobacco (1968)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 21 (1968), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The growth characteristics of three types of tissue cultures of tobacco have been investigated. They are (i) pigmented and differentiated teratoma tissue; (ii) pigmented and non-differentiated habituated tissue and (iii) non-pigmented and non-differentiated habituated tissue. All the tissues were grown on a 10 × White's medium without any exogenous supply of auxin.The comparative growth rate of the tissues was related to their nature of differentiation, viz., either organelle differentiation with chloroplast or organ differentiation with buds, leafy appendages, etc. Teratoma and pigmented habituated tissues had normal chlorophyll and carotenoid contents and showed more favorable growth in light than in the dark. The pigmented tissues showed a higher protein content than the non-pigmented tissues irrespective of whether they were of tumorous or normal origin. The pigmented tissues showed less dependence on sucrose availability in the medium than the non-pigmented tissues. Recovery after sucrose starvation was higher in the pigmented tissues than in the non-pigmented tissues.The results indicate that the growth rate of highly differentiated tissues is much slower than non-differentiated tissues and that the pigmented tissues photosynthesize and survive on reserve food products manufactured as a result of photosynthetic activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1968.tb07249.x
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  • 3
    Electronic Resource
    Electronic Resource
    Plant growth regulatory activities of artemisinin and its related compounds (1990)
    Springer
    Journal of chemical ecology 16 (1990), S. 1867-1876 
    Details
    ISSN: 1573-1561
    Keywords: Allelopathy ; seed germination ; Lemna spp. ; Artemisia annua
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Artemisinin, a sesquiterpene lactone produced in the leaves ofArtemisia annua, was evaluated for its phytotoxicity in mono- and dicotyledonous plants. Artemisinin inhibited seed germination, seedling growth, and root induction in all species tested. The concentration of artemisinin required for 50% inhibition ofLemna minor growth was 5 μM. Inhibitory plant responses appeared to require the endoperoxide moiety of this compound since similar chemicals without endoperoxide, deoxyartemisinin, arteannuic acid, and arteannuin B, were less phytotoxic. InL. minor, artemisinin and arteannuic acid caused the leakage of proteins into the growth medium, suggesting the site of activity was at the plant cell membrane.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01020500
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  • 4
    Electronic Resource
    Electronic Resource
    Effects of two sesquiterpene lactones isolated fromArtemisia annua on physiology ofLemna minor (1994)
    Springer
    Journal of chemical ecology 20 (1994), S. 969-978 
    Details
    ISSN: 1573-1561
    Keywords: Artemisinin ; arteannuic acid ; photosynthesis ; respiration ; chlorophyll ; Lemna minor
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The effects of artemisinin and arteannuic acid extracted fromArtemisia annua on the physiology ofLemna minor were evaluated. Changes in frond production, growth, dry weight, and chlorophyll content ofL. minor were determined. Photosynthesis and respiration were evaluated with a differential respirometer. Artemisinin (5 µM) inhibitedL. minor frond production and dry weight 82 and 83%, relative to methanol controls. Chlorophyll content was reduced 44% by artemisinin (2.5 µM). Arteannuic acid (10 µM) was less active, inhibiting frond production 61% and reducing chlorophyll content 66% at 5 µM. Artemisinin (1 µM) reducedL. minor photosynthesis 30% and 2.5 µM reduced respiration 39%. Arteannuic acid had no significant effect on photosynthesis or respiration at the levels tested.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02059591
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    Paper (German National Licenses)
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