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  • 1975-1979  (4)
  • 1978  (4)
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  • 1975-1979  (4)
Year
  • 1
    Electronic Resource
    Electronic Resource
    A METHOD FOR THE LONGITUDINAL STUDY OF BEHAVIORAL DEVELOPMENT IN INFANTS AND CHILDREN: THE EARLY DEVELOPMENT OF XXY CHILDREN (1978)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of child psychology and psychiatry 19 (1978), S. 0 
    Details
    ISSN: 1469-7610
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1469-7610.1978.tb00465.x
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Effect of Water Stress on the Temperature Optima of Net CO2 Exchange for Two Desert Species (1978)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 44 (1978), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The temperature dependence of net CO2 exchange was determined at various soil water potentials for two sympatric desert species. Notholaena parryi D. C. Eat. (Pteridaceae) and Encelia farinosa Gray (Compositae). As water stress increased, the temperature optimum of apparent (net) photosynthesis shifted 7 to 10°C downward and the maximum rate decreased for both species. The downward shift in temperature optimum with water stress was the result of a greater fractional stomatal closure with increasing temperature and a lowering of the temperature where maximal CO2 residual conductance of the mesophyll cells occurred. This lowering of the temperature for maximal CO2 residual conductance appears to reflect (1) a greater effect of water stress on gross photosynthesis than on respiration plus photorespiration and (2) the higher temperature optimum for respiration plus photorespiration than for gross photosynthesis. The downward shift in the temperature optimum of apparent photosynthesis can have a significant effect on the predicted carbon balance of plants as the soil water potential decreases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1978.tb01621.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Microhabitat, water relations, and photosynthesis of a desert fern, Notholaena parryi (1978)
    Springer
    Oecologia 31 (1978), S. 293-309 
    Details
    ISSN: 1432-1939
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Interrelationships between morphology, microhabitat, water relations, and photosynthesis of a xeric fern, Notholaena parryi D.C. Eat. (Pteridaceae), were examined in the western Colorado desert. In its typical microhabitat rock outcroppings protected N. parryi from direct sunlight and moderated the diurnal variations in air temperature. For example, frond temperature at noon in late winter was 15.3° C, which was 7.3° C cooler than an energy budget simulation predicting frond temperature at an exposed site. The lowest soil water potential leading to daytime stomatal opening was about-1.5 MPa (-15 bars). Rainfall runoff that was channeled to the periphery of the rocks caused Ψsoil near the fern roots to rise above-1.5 MPa even after light rainfalls, and it remained above-1.5 MPa longer after rainfall than in non-rocky sites. The water potential gradient along the stipe necessary to support the observed rates of transpiration was about-10 MPa m-1; such a large gradient reflected the small conducting area in the xylem. The water vapor conductance decreased as the frond temperature was raised, an effect that became proportionally greater as the soil dried out. The daytime water-use efficiency (mass CO2 fixed/mass water transpired) was 0.0058 for a spring day. Individual fronds reached 90% of light saturation for photosynthesis at only 100 μEinsteins m-2 s-1, a photosynthetically active radiation similar to that from the diffuse sunlight incident on the generally north-facing microhabitat of the fern. Below 50 μE m-2 s-1 the quantum requirement was 13 Einsteins absorbed/mole CO2 fixed. The ratio of chlorophyll to P700 was 552, indicating a fairly large photosynthetic unit that is characteristic of plants adapted to shaded habitats. The temperature optimum for net photosynthesis shifted from 13° C in midwinter (mean daily air temperature of 11° C) to 19° C in early fall (air temperature of 23° C).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00346249
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Assignment of aMus musculus gene for triosephosphate isomerase to chromosome 6 and for Glyoxalase-I to chromosome 17 using somatic cell hybrids (1978)
    Springer
    Somatic cell and molecular genetics 4 (1978), S. 241-252 
    Details
    ISSN: 1572-9931
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Chinese hamster × mouse hybrid cells segregating mouse chromosomes have been used to assign a gene for triosephosphate isomerase (TPI-1, EC 5.3.1.1, McKusick #19045) to mouse chromosome 6, and a gene for Glyoxalase-I (GLO-1, EC4.4.1.5, McKusick #13875) to mouse chromosome 17. The genes for TPI-1 and lactate dehydrogenase B are syntenic in man and probably so in the dog. It is therefore likely that they are syntenic also in the mouse. It is of interest then that there is a mouse gene,Ldr-1, on chromosome 6 that regulates the level of LDH B subunits in mouse erythrocytes. The locus for GLO-1 is closely linked to the major histocompatibility complex in man. Since the major histocompatibility complex in the mouse is present on chromosome 17, this locus and theGlo-1 locus are syntenic in the mouse as well. This finding adds to the number of autosomal gene pairs which are syntenic in both mouse and man and reinforces the belief that there is considerable conservation of linkage groups during evolution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01538988
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    Paper (German National Licenses)
    Fulltext
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