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  • 1
    Electronic Resource
    Electronic Resource
    The development of NAD(P)H-dependent and ferredoxin-dependent glutamate synthase in greening barley and pea leaves (1982)
    Springer
    Planta 154 (1982), S. 473-476 
    Details
    ISSN: 1432-2048
    Keywords: Ferredoxin ; Glutamate synthase ; Greening (leaves) ; Hordeum ; Pisum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The activity of NAD(P)H-dependent glutamate synthase (E.C. 1.4.1.14) has been demonstrated in extracts from etiolated shoots of pea (Pisum sativum L.) and barley (Hordeum vulgare L.). This activity does not significantly alter upon greening of the etiolated shoots, and is at a similar level in light-grown material. Ferredoxin-dependent glutamate synthase (E.C. 1.4.7.1) has low activity in etiolated shoots but increases rapidly on greening. In light grown leaves ferredoxin-dependent activity is 30–40-fold higher than NAD(P)H-dependent activity. It is not considered that the NAD(P)H-dependent glutamate synthase plays an important role in ammonia assimilation in the photosynthetic tissue of higher plants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01267816
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  • 2
    Electronic Resource
    Electronic Resource
    The value of mutants unable to carry out photorespiration (1988)
    Springer
    Photosynthesis research 16 (1988), S. 155-176 
    Details
    ISSN: 1573-5079
    Keywords: Hordeum ; mutants ; nitrogen metabolism ; photosynthesis ; photorespiration ; Pisum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Manipulation of the CO2 concentration of the atmosphere allows the selection of photorespiratory mutants from populations of seeds treated with powerful mutagens such as sodium azide. So far, barley lines deficient in activity of phosphoglycolate phosphatase, catalase, the glycine to serine conversion, glutamine synthetase, glutamate synthase, 2-oxoglutarate uptake and serine: glyoxylate aminotransferase have been isolated. In addition one line of pea lacking glutamate synthase activity and one barley line containing reduced levels of Rubisco are available. The characteristics of these mutations are described and compared with similar mutants isolated from populations of Arabidopsis. As yet, no mutant lacking glutamine synthetase activity has been isolated from Arabidopsis and possible reasons for this difference between barley and Arabidopsis are discussed. The value of these mutant plants in the elucidation of the mechanism of photorespiration and its relationships with CO2 fixation and amino acid metabolism are highlighted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00039491
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    Paper (German National Licenses)
    Fulltext
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