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  • Mitochondria  (2)
  • Stem rusts  (2)
  • Allorosettenformation  (1)
  • Bdelloidea  (1)
  • 1
    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
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Current genetics 15 (1989), S. 161-166 
    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
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  • 3
    ISSN: 1433-8580
    Keywords: Rat renal allograft ; GvHR ; allorosette ; blocking factor ; Rattennierentransplantation ; GvHR ; Allorosettenformation ; blockierender Serumfaktor
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung 53 LBNF1-Nieren wurden auf L-Ratten transplantiert: 24 unbehandelte Empfänger überlebten durchschnittlich 16,1 ± 1,7 Tage. 14 Empfänger bekamen je 4 ml Alloantiserum (ADS, Gruppe 2), die restlichen 15 je 4 ml ALS (Gruppe 3). Davon überlebten 9 bzw. 10 Empfänger mehr als 4 Monate. Mit Milzzellen dieser permanent überlebenden 19 Ratten wurde eine GvHR durchgeführt. Grad und Index der GvHR ergaben eine normale, zellgebundene Immunantwort der Empfänger. Nach der Splenektomie erhielten sie erstmalig, 18 Tage später zum zweiten Mal Haut von LBNF1, 18 Tage danach Haut von LBufF1 transplantiert. Das erste Transplantat überlebte in der ADS-Gruppe 13,1 ± 1,9 Tage, in der ALS-Gruppe 12,2 ± 1,2 Tage. Das zweite wurde bei Gruppe 2 ebenfalls verzögert, bei Gruppe 3 fast gleich wie bei unbehandelten L-Ratten, das unspezifische Transplantat in beiden Gruppen regelrecht abgestoßen. Lymphozytotoxin und Hämagglutinin wurden vor und nach der Hauttransplantation bis zum 53. Tag nicht nachgewiesen. Die Seren beider Gruppen inhibierten die Allorosettenformation auf 46,0 ± 4,4% (ADS-Gruppen) bzw. 37,7 ± 9,2% (ALS-Gruppe), somit war ein blockierender FAktor im Serum der Empfänger vorhanden. Höchstwahrscheinlich hatten sich also bei diesen Empfängern nach der ALS-Therapie blockierende Antikörper gebildet, woraus sich ein Enhancement der Nierentransplantate entwickelte.
    Notes: Summary 53 LBNF1 kidneys were grafted into L-rats. 24 untreated recipients served as control and survived 16.1 ± 1.7 days. 14 recipients were treated with 4 ml alloantiserum (ADS) each, and the other 15 animals with 4 ml ALS each. 9 and 10 of these 14 and 15 animals survived for more than 4 months. We performed GvH-reaction with spleen cells of these 19 animals. It showed normal cellular immune response. After splenectomy first donor specific skin was transplanted, 18 days later second skin of same origin (LBNF1) and 18 days after third party skin (LBufF1). The first grafts survived 13.1 ± 1.9 days in the recipients of ADS treatment and 12.2 ± 1.2 days in the recipients of ALS. Second skin grafts were rejected delayed in the former recipients as the first grafts, in the later more accelerated than the first grafts. The third grafts survived as the controls. Before and after skin grafting we could not detect lymphocytotoxin and hemagglutinin. The sera of animals with ADS therapy inhibited the spontaneous allorosette formation to 46.0 ± 4.4% and of ALS therapy 37.7 ± 9.2%. Our results suggest that after ALS treatment blocking antibodies were produced in the recipients and they cause the enhancement of kidney allograft.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Current genetics 22 (1992), S. 101-105 
    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
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Hydrobiologia 439 (2000), S. 91-101 
    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
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