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Crop Rotation and Nematicides for Management of Mixed Populations of Meloidogyne spp. on Tobacco.

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The effects of crop rotation and the nematicides 1,3-dichloropropene (1,3-D), ethoprop, and fenamiphos on the relative frequency of Meloidogyne incognita race 3, M. arenaria race 2, and M. javanica and tobacco yields on a sandy loam soil were determined. Cropping sequences altered the species

Clinical significance of cross-reactivity between tobacco and latex.

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BACKGROUND Allergen cross-reactivity between tobacco and other species of Solanaceae family (tomato, potato, aubergine and egg plant) have been reported. We have recently studied IgE response to tobacco in asthmatic patients sensitised to Lolium perenne (Perennial rye grass pollen) and have found

Genotypes and their response to in vitro production of haploids in F1 lines of Nicotiana tabacum.

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The present article reports on pollen embryogenesis resulting in haploid plants in 14 different F1 lines of Nicotiana tabacum. The response for pollen embryogenesis was high in cultures where the F1 lines were derived from mutants. Present observations are in agreement with previous reports on

Changes in the enzyme pattern of greening tissue cultures of Nicotinana tabacum var. "Samsun".

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In tissue cultures of Nicotiana tabacum L. ribulose-diphosphate carboxylase and NADP-dependent glyceraldehyde-3-phosphate dehydrogenase can be found only after transfer of the tissue to light. The increase of the activities of these enzymes parallels that of chlorophyll.The increase in

Pearl Millet for the Management of Pratylenchus penetrans in Flue-Cured Tobacco in Quebec.

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Two 1-year rotation experiments were conducted from 1998 to 2000 to assess the impact of forage and grain pearl millet (Pennisetum glaucum) on Pratylenchus penetrans populations in a tobacco field (Nicotiana tabacum cv. Delgold) in Quebec. Performance of these crops was compared with rye, the

Tobacco as an allergen in bronchial disease.

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BACKGROUND Skin testing and sera measurements have verified the existence of tobacco specific IgE. However, the few published studies on this matter report conflicting results concerning their clinical significance. OBJECTIVE To verify if a specific clinical allergenic response against tobacco might

Rice has two distinct classes of protein kinase genes related to SNF1 of Saccharomyces cerevisiae, which are differently regulated in early seed development.

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We have isolated five cDNA clones (osk1-5) for protein kinases from rice which are related to SNF1 protein kinase of Saccharomyces cerevisiae. Based on the sequence homology, these cDNAs can be classified into two groups, group 1 (osk1) and group 2 (osk2-5). The products of these genes were

Induced activity of adenine phosphoribosyltransferase (APRT) in iron-deficiency barley roots: a possible role for phytosiderophore production.

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To isolate the genes involved in the response of graminaceous plants to Fe-deficient stress, a protein induced by Fe-deficiency treatment was isolated from barley (Hordeum vulgare L.) roots. Based on the partial amino acid sequence of this protein, a cDNA (HvAPT1) encoding adenine

Isolation and in vitro translation of polysomes from mature rye leaves.

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Cytoplasmic polysomes have been prepared from mature leaves of winter rye (Secale cereale L. cv Puma). This is the first time a method has been developed for isolation of highly polymerized polysomes from mature leaves. The degree of intactness of isolated plant polysomes has been determined by two

Characterization of three related low-temperature-regulated cDNAs from winter Brassica napus.

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A cDNA clone, pBN115, encoding a low-temperature-regulated transcript in winter Brassica napus has been isolated. Northern blot analyses show that levels of transcripts hybridizing to pBN115 increase within 24 h of exposure of B. napus to low temperature, peak at 3 d, and then remain at an elevated

Distribution of 5-methylcytosine residues in 5S rRNA genes in Arabidopsis thaliana and Secale cereale.

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Bisulfite genomic sequencing was used to localise 5-methylcytosine residues (mC) in 5S rRNA genes of Arabidopsis thaliana and Secale cereale. The maps of mC distribution were compared with the previously published map of the corresponding region in Nicotiana tabacum. In all three species, the level

A new rearrangement of angiosperm chloroplast DNA in rye (Secale cereale) involving translocation and duplication of the ribosomal rpS15 gene.

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The mapping and nucleotide sequencing of the rpS15 gene in the rye chloroplast DNA has shown that it is located in the inverted repeat (IR) and thus has two copies/genome. This is in contrast to tobacco and liverwort chloroplasts where rpS15 occurs as single-copy gene localized in the small single

Detergent-resistant plasma membrane proteome in oat and rye: similarities and dissimilarities between two monocotyledonous plants.

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The plasma membrane (PM) is involved in important cellular processes that determine the growth, development, differentiation, and environmental signal responses of plant cells. Some of these dynamic reactions occur in specific domains in the PM. In this study, we performed comparable

The rye embryo system as an alternative to the wheat system for protein synthesis in vitro.

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Isolated rye embryos are a readily available source for the preparation of very active, cell-free, protein-synthesizing systems. Incorporation levels up to 2000 pmol leucine per 50 mul assay are routinely obtained at saturating TMV (Tobacco mosaic virus) RNA concentrations; at limiting messenger RNA

The powdery mildew resistance gene Pm8 derived from rye is suppressed by its wheat ortholog Pm3.

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The powdery mildew resistance gene Pm8 derived from rye is located on a 1BL.1RS chromosome translocation in wheat. However, some wheat lines with this translocation do not show resistance to isolates of the wheat powdery mildew pathogen avirulent to Pm8 due to an unknown genetically dominant

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