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Secretions were induced from second (invasive) stage juveniles (J2s) of the potato cyst nematode Globodera rostochiensis by exposing them to 5-methoxy-N,N-dimethyl tryptamine oxalate (DMT). Secretions were collected from J2s in sufficient quantity to allow direct analysis. Gel electrophoresis
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In order to understand the chromosome structure of sweet potato (Ipomoea batatas cv. Xushu 18), molecular cytogenetic analyses were carried out on I. batatas. by using 45S rDNA fluorescence in situ hybridization (45S rDNA-FISH), self genomic in situ hybridization (self-GISH), and silver staining
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Somatic hybrids between Solanum tuberosum cv 'Brodick' and S. sanctae-rosae were selected for having elevated chromosome numbers, intermediate morphology and potato cyst nematode resistance (derived from S. sanctae-rosae). DNA was extracted from this material and subjected to inter-SSR PCR directed
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The number of transcriptionally active nucleolar organizer regions (NORs) of one monohaploid, one dihaploid and two tetraploids of Solanum tuberosum and one diploid S. phureja was established by the silver staining of metaphases in root meristems and in in vitro-cultured leaf explants. The maximum
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The protein contents of mitochondria from different potato (Solanum tuberosum L.) tissues (tubers, dark-grown shoots, and green leaves) grown in a greenhouse or in vitro were compared by two-dimensional polyacrylamide gel electrophoresis. Two different methods were used: using the method that gave
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Cytogenetic and molecular investigations on the holocentric chromosomes of the aphid Macrosiphum euphorbiae (Thomas, 1878)have been carried out using silver staining and C-banding (followed by chromomycin A3 and DAPI staining) in order to improve our knowledge about the structure of aphid
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We identified a shared B domain within nucleoside triphosphate diphosphohydrolases (NTPDases) of plants and parasites. Now, an NTPDase activity not affected by inhibitors of adenylate kinase and ATPases was detected in Leishmania infantum promastigotes. By non-denaturing gel electrophoresis of
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An RNA-directed RNA polymerase (RdRP, EC 2.7.7.48) from tomato leaf tissue was purified to electrophoretic homogeneity. A terminal transferase activity that was found to cofractionate with RdRP from DEAE-Sepharose and DNA-cellulose columns was removed by chromatography on a Mono Q column. The highly
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Using beta-glucuronidase the cell walls of tomato and potato primary microsporocytes can be digested. When the resulting protoplasts are exposed to distilled water, they burst, and complete sets of synaptonemal complexes are released to settle on plastic coated slides. After drying and formalin
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Laccase production by the white-rot fungus Trametes gallica was studied, using twelve different media under static or shaking condition. The results indicated that organic nitrogen sources such as tryptone and peptone strongly improved laccase production. The application of an amino acid mixture and
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