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  • 1
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    The experimental phytotoxicology of germanium in relation to silicon (1990)
    Springer
    Details
    Publication Date: 1990-01-01
    Print ISSN: 0049-6979
    Electronic ISSN: 1573-2932
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Published by Springer
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    PAPER CURRENT
  • 2
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    The effects of mercury compounds on the growth and orientation of cucumber seedlings. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Keywords: BIOSCIENCES
    Type: Physiologia Plantanum; 26; 1972
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Release of volatile mercury from vascular plants (1974)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Volatile, organic solvent soluble mercury has been found in leaves and seeds of several angiosperms. Leaves of garlic vine, avocado, and haole-koa release mercury in volatile form rapidly at room temperature. In garlic vine, the most active release is temperature dependent, but does not parallel the vapor-pressure temperature relationship for mercury. Mercury can be trapped in nitric-perchloric acid digestion fluid, or n-hexane, but is lost from the hexane unless the acid mixture is present. Seeds of haole-koa also contain extractable mercury but volatility declines in the series n-hexane (90%), methanol (50%), water (10%). This suggests that reduced volatility may accompany solvolysis in the more polar media.
    Keywords: LIFE SCIENCES (GENERAL)
    Type: Physiologia Plantarum; 32; 1974
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Geomycology (1976)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Fungi have long been known to have capabilities for reduction and alkylation of arsenate and selenate but their general capabilities for solubilizing and accumulating metallic substances have been given serious attention only in recent years. Common members of the Aspergillaceae cultured on boron, copper, lead and other metals or oxides can solubilize and concentrate the elements or their compounds. To account for biosolubilization of the metals, we have set up a model study, incubating selected metals, e.g., mercury, in solutions of various metabolites including L-lysine and citric acid. Results of 100-300 days incubation showed that many metals can in fact be readily solubilized, and in some cases more effectively at pH 6-7 than at pH 1.5-2.
    Keywords: LIFE SCIENCES (GENERAL)
    Type: May 30, 1975 - May 31, 1975|Open Meeting of the Working Group on Space Biology; May 29, 1975 - Jun 07, 1975; Varna; Bulgaria
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
    Electronic Resource
    Electronic Resource
    Release of Volatile Mercury from Vascular Plants (1974)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 32 (1974), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Volatile, organic solvent soluble mercury has been found in leaves and seeds of several angiosperms. Leaves of garlic vine (Pseudocallyma alliacium), avocado (Persea americana) and haole-koa (Leucaena glauca) release mercury in volatile form rapidly at room temperature. In garlic vine, the most active release is temperature dependent, but does not parallel the vaporpressure temperature relationship for mercury. Mercury can be trapped in nitric-perchloric acid digestion fluid, or n-hexane, but is lost from the hexane unless the acid mixture is present. Seeds of haole-koa also contain extractable mercury but volatility declines in the series n-hexane (90%) 〉 methanol (50%) 〉 water (10%). This suggests that reduced volatility may accompany solvolysis in the more polar media. Gas chromatographic analysis shows that the volatile compound is not dimethyl mercury.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1974.tb03748.x
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    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    The experimental phytotoxicology of germanium in relation to silicon (1990)
    Springer
    Water, air & soil pollution 49 (1990), S. 187-195 
    Details
    ISSN: 1573-2932
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The common belief that the sensitivity of plants to Ge is evidence for a Si requirement has been examined experimentally using barely, wheat, cucumber and radish cultivars. All 4 test plants were inhibited by Na2GeO3 (metagermanate) at 1 mM or less, including germination, shoot height, root length, and first leaf growth in barley and wheat. The application of Na2SiO3 (metasilicate) counteracted Ge-inhibition only in barley. Further, only barley growth was stimulated by the application of Na2SiO3. Necrotic lesions were characteristic of Ge-toxicity only in barley leaves, and were reduced when Na2SiO3 was supplied.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00279520
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    Paper (German National Licenses)
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