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  • 1
    Electronic Resource
    Electronic Resource
    Genetic mapping of cytological and isozyme markers on chromosomes 1R, 3R, 4R and 6R of rye (1994)
    Springer
    Theoretical and applied genetics 88 (1994), S. 208-214 
    Details
    ISSN: 1432-2242
    Keywords: Rye ; C-heterochromatin bands ; Isozymes ; Translocation ; Genetic mapping
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Cytogenetic maps involving chromosomes 1R, 3R, 4R and 6R have been developed from the analysis of offspring of crosses between multiple heterozygous rye plants. The maps include isozyme loci GpiR1, Mdh-R1 and Pgd2 (located in chromosome 1R), Mdh-R2 (located in chromosome 3R), Pgm-R1 (located in chromosome 4R) and Aco-R1 (located in chromosome 6R). Various telomeric and interstitial C-bands of these four chromosomes, the centromere split of chromosome 3R, and translocation TR01 were used as cytological markers. By means of electron microscope analysis of spread pachytene synaptonemal complexes, the breakpoint of TR01 was physically mapped in chromosome arms 4RS and 6RL. From the linkage data, conclusions were derived concerning the cytological locations of the isozyme loci and the physical extent of the evolutive translocations involving chromosome arm 6RL.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00225899
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Physical mapping of translocation breakpoints in rye by means of synaptonemal complex analysis (1994)
    Springer
    Theoretical and applied genetics 89 (1994), S. 33-41 
    Details
    ISSN: 1432-2242
    Keywords: Physical mapping Translocation breakpoint ; C-banding Synaptonemal complex ; Rye
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A physical map including 40 translocation breakpoints has been constructed in rye by means of synaptonemal complex (SC) analysis of well-paired pachytene quadrivalents. The chromosome arms involved in such translocations were previously identified either from mitotic C-banding analysis or from the meiotic configurations observed in the progenies of crosses with a rye line having multiple chromosome rearrangements. The synaptonemal complexes formed by some translocation homozygotes were also analyzed, the relative pachytene SC length of their translocated chromosomes being compared to that observed in the corresponding translocation heterozygotes. In the translocations in which the position of the breakpoint could be well defined from mitotic C-banding analysis, a good correspondence between the relative position of the point showing partner exchange in the pachytene quadrivalents and the actual location of the breakpoint was established. It is concluded that the mapping of translocation breakpoints by SC analysis of pachytene quadrivalents provides a more accurate estimate of the position of the breakpoints than that obtained from mitotic C-banding analysis, due to the lack of evenly-distributed interstitial C-bands in most rye chromosomes. The distribution of the breakpoints along the chromosomes in relation to their spontaneous or induced origin is also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00226979
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Behavioural actions of prolactin locally applied into the hippocampus of adult female rats (1994)
    Springer
    Journal of neural transmission 95 (1994), S. 17-28 
    Details
    ISSN: 1435-1463
    Keywords: Prolactin ; behaviour ; hippocampus ; stress ; exploratory behaviour
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The probable behavioural effects of rat prolactin (rPRL) locally applied into the ventral hippocampus (HPC) were studied in cycling female rats. Three experiments were performed examining the behavioural responses of rats subjected to three different situations: (i) Exploratory activity in an enriched holeboard (ii) exploratory activity under conflicting situation and (iii) escape behaviours in a forced swimming test. Behavioural parameters studied were: underground and object-directed exploration and locomotion (Experiment 1); latency time and exploration behaviours (Experiment 2); swimming time and escape behaviours (Experiment 3). In Experiment 1 results showed that rPRL decreased the underground exploration and also locomotion but increased the object-directed exploration and had no effect on non-ambulatory activity. In Experiment 2 results showed that treatment of rPRL increased the latency time but did not modify the exploratory activity. In Experiment 3 results showed that rPRL augmented the swimming time and one of two parameters (frequency of immersions intents) of the escape behaviour. Results are interpreted as local actions of PRL on hippocampal neuron affecting expression of behaviours of rats depending on the stressful conditions of the environment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01283027
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Behavioural effects of adenosine locally applied into ventral hippocampus of adult male rats (1995)
    Springer
    Journal of neural transmission 100 (1995), S. 63-72 
    Details
    ISSN: 1435-1463
    Keywords: Adenosine ; hippocampus ; behaviour ; exploratory behaviour
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The possible effects of Adenosine (AD), locally applied into the ventral Hippocampus (HPCv) on the expression of general motor activity and some stereotyped behaviours were studied in adult male rats. Locomotion display was recorded in a hole-board equiped with automatic infrared animal activity detectors. Stereotyped behaviours were measured by direct inspection by two observers. Animals were implanted with microinjection cannulae into the HPCv and 72 h later they were injected with saline, or increasing doses of AD. In one experiment rats were microinjected once with saline or Adenosine and general motor activity and exploration were examined. In other experiment, rats were injected into the HPCv twice with saline, the AD-receptors antagonist 1,3-dipropil-methyl-xanthine (DMX) or AD and only stereotyped behaviours were examined. Results of Experiment 1 showed that the 40 nMol dose of AD was significantly effective to inhibit by about 30% several motor activities such as vertical, horizontal and ambulatory behaviours. Results of Experiment 2, showed that grooming was not modified by AD but the dose of 10 nMol increased the time of immobility by about 3 times over controls. DMX was able to block completely the AD effects on immobility. The present results suggest that in the rat AD might modulate the hippocampal-mediated expression of some motor and stereotyped behaviours induced by unknown environments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01276866
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    Paper (German National Licenses)
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