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  • Mitochondria  (2)
  • Stem rusts  (2)
  • Bdelloidea  (1)
  • Blood velocity  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Homologous linear plasmids in mitochondria of three species of wheat bunt fungi, Tilletia caries, T. laevis and T. controversa (1990)
    Springer
    Current genetics 17 (1990), S. 229-233 
    Details
    ISSN: 1432-0983
    Keywords: Linear plasmids ; Mitochondria ; Wheat ; Bunt fungi ; Tilletia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary All isolates of Tilletia spp. investigated (five isolates of T. caries, including one from Japan, two isolates of T. laevis, and five isolates of T. controversa) contained a linear DNA plasmid ranging in size from 7.2 to 7.6 kb. All plasmids were highly homologous to each other as shown by DNA-DNA hybridization and comparison of restriction enzyme sites. Variability in the size of the plasmid was found to be due to differences within a central region of the plasmid. No homology between the plasmid and mitochondrial or nuclear DNA was found, but the mitochondrial origin of the plasmid was confirmed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00312614
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Double-stranded RNAs in mitochondrial extracts of stem rusts and leaf rusts of cereals (1989)
    Springer
    Current genetics 15 (1989), S. 161-166 
    Details
    ISSN: 1432-0983
    Keywords: Double-stranded RNA ; dsRNA ; Mitochondria ; Stem rusts ; Leaf rusts ; Cereals
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Double-stranded ribonucleic acids (dsRNA) were isolated from mitochondria in urediosporelings of three cereal stem rusts, Puccinia graminis f. sp. tritici, f. sp. secalis and f. sp. avenae, and two cereal leaf rusts, P. recondita f. sp. tritici and P. coronata f. sp. avenae, and analyzed by agarose gel electrophoresis. The double strandedness of the RNA molecules was characterized by nuclease treatments (RNase A, DNase 1 and S1 nuclease) and CF-11 cellulose column chromatography. No interspecific variation in multisegments of dsRNA was observed among races of each forma specialis. As to the interspecific variation, although each of three forma specialis of Puccinia graminis had similar dsRNA segments, 4.8, 5.0 and 5.2 kb, wheat leaf rust and oat crown rust had additional dsRNA segments of 2.7, 2.8, 5.8 and 6.0 kb. The presence of a dsRNA segment of 5 kb size in all isolates and species examined indicates that this unique segment can be a molecular marker for the rust family, Uredinales. Dot-blot hybridization indicated that there is no sequence homology between dsRNA segments and mitochondrial DNA.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00435464
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    A region of heterogeneity adjacent to the 5s ribosomal RNA gene of cereal rusts (1992)
    Springer
    Current genetics 22 (1992), S. 101-105 
    Details
    ISSN: 1432-0983
    Keywords: Intergenic region ; Stem rusts ; Puccinia graminis ; Leaf rusts ; Cereals
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Total genomic DNA was isolated from three cereal stem rusts, Puccinia graminis f. sp. tritici, f. sp. secalis, f. sp. avenae, and two cereal leaf rusts, P. recondita f. sp. tritici and P. coronata f. sp. avenae, and analyzed for the presence of heterogeneity in the intergenic region of the ribosomal DNA repeat unit. A 1 kb region of the repeat unit between the 26s and the 5s rRNA genes (IGR-1) was amplified by PCR and was found to be heterogeneous within each isolate and variable in size between races and species. The PCR results were confirmed by Southern blot analysis of native DNA. In an isolate of race C36(48), heterogeneity appeared to be due to variable numbers of 0.1 kb subrepeats in IGR-1. Nine wheat stem rust strains representing nine different races produced a unique pattern of heterogeneity while two different isolates of one race were identical, as were five of another. This may provide a rapid method for race identification in wheat stem rust. Heterogeneity and polymorphism in rye stem rust, oat stem rust, wheat leaf rust, and oat crown rust, was less pronounced than in wheat stem rust. In the course of this work, the 5s rRNA gene was located and its position and orientation within the ribosomal repeat unit was established.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00351468
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  • 4
    Electronic Resource
    Electronic Resource
    Axial development of velocity fields in the porcine main pulmonary artery system (1994)
    Springer
    Heart and vessels 9 (1994), S. 67-78 
    Details
    ISSN: 1615-2573
    Keywords: Pulmonary artery ; Hemodynamics ; Blood velocity ; Pulsed Doppler ultrasound ; Pigs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The aim of this study was to provide detailed data on velocity profile development in the normal porcine main pulmonary artery and its main branches. Under spontaneous hemodynamic conditions in twelve open-chest 90kg pigs, perivascular pulsed Doppler ultrasound was used for blood velocity measurements in the entire cross-sectional area in three axial locations in the main pulmonary artery and along one diameter in the main branches. Computerized threedimensional visualizations of the spatial and temporal development of velocity profiles were made throughout the heart cycle. The results were similar one and two diameters downstream of the pulmonary valve. In the early systolic acceleration phase, the velocity profile became skewed, with the highest velocities (132.7 ± 19.4cm · sec−1) towards the inferior to right superior vessel wall, and rotated counterclockwise 45°–90° during the late acceleration to early deceleration phase in 9 out of 11 pigs. Maximum retrograde velocities (31.4 ± 14.9cm · sec−1) were observed at the inferior to the right superior vessel wall in the late systolic deceleration phase and in early diastole. During diastole, low retrograde to insignificant antegrade velocities were observed. Immediately upstream of the pulmonary bifurcation, the velocity profile disclosed two peaks at locations corresponding to the two main branches. A confined area with retrograde velocities was seen at the right vessel wall in late systole. Low-scale antegrade velocities were observed throughout diastole in the entire cross-sectional area. In the left main branch, the velocity profiles were found to be somewhat skewed towards the left vessel wall, corresponding to the smaller curvature of the left main branch, while the velocity profile in the right main branch was skewed against the superior vessel wall throughout systole. This study thus disclosed that the blood velocity profiles in the main pulmonary artery system were skewed and that mean velocity varied 26%–50% between measuring points, exhibiting an as yet unexplained rotational phenomenon. The skewed velocity profile in the porcine pulmonary trunk indicates that single-point blood velocity measurements can only serve as a basis for cardiac output estimations when used with considerable caution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01751940
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Bdelloid rotifers from Korea (2000)
    Springer
    Hydrobiologia 439 (2000), S. 91-101 
    Details
    ISSN: 1573-5117
    Keywords: Rotifera ; Bdelloidea ; Korea ; taxonomy ; biogeography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Twenty-five samples from 18 terrestrial and/or freshwater habitats in the eastern part of Korea yielded 38 new records of bdelloid rotifers, 22 of which are new to the Asian fauna. Among these Korean new records, Dissotrocha aculeata reversa Berzins and Habrotrocha plana Milne were recorded outside their type localities for the first time, and Macrotrachela bullata (Murray) was reported only from two countries after its description. Bradyscela granulosa de Koning, Habrotrocha gracilis gracilis Montet, Macrotrachela latior Donner, Philodina duplicalcar (de Koning) and P. rugosa coriacea Bryce are recorded outside Europe for the first time. The taxonomy and distribution of these rare species are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004181414535
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