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  • 1
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Plant Physiology and Plant Molecular Biology 40 (1989), S. 539-569 
    ISSN: 1040-2519
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 336 (1988), S. 589-592 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] As in previous experiments with impalement microelec-trodes6'7 giant chloroplasts of P. metallica were used. Protoplasts Fig. 1 Light microscopy (Nomarski interference contrast) of a, a protoplast (30 (xm in diameter) and 6, osmotically swollen thylakoids ('blebs'; same scale) of Peperomia ...
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 341 (1989), S. 450-453 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Patch-clamp experiments were performed on guard-cell pro-toplasts isolated from Vicia faba by a gentle procedure (no agitation) at the temperature of plant cultivation5. High-resist-ance membrane seals4 were formed between the patch pipette and the plasma membrane (Fig. 1). Fluxes of K+, Cl~ and ...
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 329 (1987), S. 833-836 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1 a, Whole-vacuole currents in response to a series of voltage steps from a holding potential of 0 mV with the vacuole exposed to 10~8 M Ca2+ on the cytoplasmic side of the membrane. Solutions contained: 100 mM KC1, 5 mM Tris-MES /〉H7.2, 2 mM MgCl2, buffered at 1 mM total EGTA in the bath; 10 ...
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  • 5
    ISSN: 1432-1211
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-2048
    Keywords: Abscisic acid (photosynthesis) ; Carbon dioxide assimilation ; Stomatal conductance ; Triticum (stomata) ; Xanthium (stomata) ; Zea (stomata)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract (±)-Abscisic acid (ABA) at 10-5 M was added to the transpiration stream of leaves of 16 species (C3 and C4, monocotyledons and dicotyledons). Stomatal responses followed one of three patterns: i) stomata that were wide and insensitive to CO2 initially, closed partially and became sensitive to CO2; ii) for stomata that were sensitive to CO2 before the application of ABA, the range of highest sensitivity to CO2 shifted from high to low intercellular partial pressures of CO2, for instance in leaves of Zea mays from 170–350 to 70–140 μbar; iii) when stomata responded strongly to ABA, their conductance was reduced to a small fraction of the initial conductance, and sensitivity to CO2 was lost. The photosynthetic apparatus was affected by applications of ABA to various degrees, from no response at all (in agreement with several previous reports on the absence of effects of ABA on photosynthesis) through a temporary decrease of its activity to a lasting reduction. Saturation curves of photosynthesis with respect to the partial pressure of CO2 in the intercellular spaces indicated that application of ABA could produce three phenomena: i) a reduction of the initial slope of the saturation curve (which indicates a diminished carboxylation efficiency); ii) a reduction of the level of the CO2-saturated rate of assimilation (which indicates a reduction of the ribulose-1,5-bisphosphate regeneration capacity); and iii) an increase of the CO2 compensation point. Photosynthesis of isolated mesophyll cells was not affected by ABA treatments. Responses of the stomatal and photosynthetic apparatus were usually synchronous and often proportional to each other, with the result that the partial pressure of CO2 in the intercellular spaces frequently remained constant in spite of large changes in conductance and assimilation rate. Guard cells and the photosynthetic apparatus were able to recover from effects of ABA applications while the ABA supply continued. Recovery was usually partial, in the case of the photosynthetic apparatus occasionally complete. Abscisic acid did not cause stomatal closure or decreases in the rate of photosynthesis when it was applied during a phase of stomatal opening and induction of photosynthesis that followed a transition from darkness to light.
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  • 7
    ISSN: 1573-4927
    Keywords: esterase-16 ; rat genetics ; linkage group V (LGV) ; cluster 2
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Esterase-16, an esterase present in lung and other tissues of the laboratory rat, has been characterized by its biochemical properties (electrophoretic mobility, substrate pattern, sensitivity to inhibitors) and genetic variation in 107 inbred strains and substrains including 14 RI strains. It was classified as a carboxylesterase (EC 3.1.1.1). The phenotype ES-16A (BN/Han and 63 other strains) was defined as a narrow electrophoretic band migrating between ES-1A and ES-13A, ES-16B (LEW/Han and 42 other strains) exhibited the same electrophoretic mobility as ES-16A but was distinguished by its extremely weak activity. Segregation of ES-16 in RI strains and backcrosses indicated linkage to linkage group V (LGV). TheEs-16 locus was tentatively placed into esterase cluster 2 and homology withEs-7 of the house mouse is proposed.
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Biochemical genetics 23 (1985), S. 599-606 
    ISSN: 1573-4927
    Keywords: rat ; leucine arylaminopeptidase ; linkage
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Genetic analysis of backcross progeny from previously characterized rat inbred strains revealed that the biochemical marker Lap-1 is localized in linkage group I (LG I). Lap-1 codes for leucine arylaminopeptidase (EC 3.4.11). The distances of Lap-1 to c, RT6, and Hbb, based on recombination frequencies, are 3.1±1.5, 8.3±4.0, and 11.4±2.8 cM, respectively. Acon-1 codes for aconitase (EC 4.2.1.3). The calculated distances of Acon-1 to c and Hbb are 30.1±5.0 and 36.1±5.3 cM, respectively. This suggests that Acon-1 is also in LG I, but the observed high frequency of double crossovers requires further confirmation of this linkage. Ahd-2, Es-6, and Gdc-1 are linked neither to markers of LG I nor to one another.
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  • 9
    ISSN: 1573-4927
    Keywords: esterase-16 ; rat genetics ; linkage group V (LGV) ; cluster 2
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Esterase-16, an esterase present in lung and other tissues of the laboratory rat, has been characterized by its biochemical properties (electrophoretic mobility, substrate pattern, sensitivity to inhibitors) and genetic variation in 107 inbred strains and substrains including 14 RI strains. It was classified as a carboxylesterase (EC 3.1.1.1). The phenotype ES-16A (BN/Han and 63 other strains) was defined as a narrow electrophoretic band migrating between ES-1A and ES-13A, ES-16B (LEW/Han and 42 other strains) exhibited the same electrophoretic mobility as ES-16A but was distinguished by its extremely weak activity. Segregation of ES-16 in RI strains and backcrosses indicated linkage to linkage group V (LGV). TheEs-16 locus was tentatively placed into esterase cluster 2 and homology withEs-7 of the house mouse is proposed.
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  • 10
    ISSN: 1573-4927
    Keywords: Rattus norvegicus ; electrophoresis ; carboxylesterases (EC 3.1.1.1) ; polymorphism ; strain distribution ; linkage group V ; esterase gene cluster 2
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The segregation of rat esterases controlled by loci residing in linkage group V (LGV) has been studied in two backcross series, (LEW/Han × BN/Han)F1 × LEW/Han and (LEW/Han × LE/Han)F1 × LEW/Han. Es-14 (formerly Es-Si) was shown to be closely linked to Es-1. A new esterase locus, Es-15, was described which codes for a liver isozyme. The distribution pattern of three alleles at the Es-15 locus is presented for 52 independent inbred strains. Close linkage of Es-15 to Es-14 and to Es-1 was established, proposing the following gene order: [Es-2, Es-10]—[ES-1, ES-14, ES-15]. The esterase loci on LGV are thus separated into two gene clusters, cluster 1 and cluster 2. These conclusions are supported by the strain distribution patterns of the two RI strain series, LXB and DXE.
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