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helianthus/atrofia
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[Cloning and analysis of the resistance gene fragments from silverleaf sunflower Helianthus agrophyllus].
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Using a combination of degenerate primers designed from the NBS domains of the resistance genes, amplification and subsequent cloning of the resistance gene fragments from sunflower (Helianthus agrophyllus) was conducted. Sequences of cloned PCR products differed from one another and displayed
Stem cankers on sunflower (Helianthus annuus) in Australia reveal a complex of pathogenic Diaporthe (Phomopsis) species.
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The identification of Diaporthe (anamorph Phomopsis) species associated with stem canker of sunflower (Helianthus annuus) in Australia was studied using morphology, DNA sequence analysis and pathology. Phylogenetic analysis revealed three clades that did not correspond with known taxa, and these are
Influence of High Temperature and Duration of Heating on the Sunflower Seed Oil Properties for Food Use and Bio-diesel Production.
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Two important problems for the food industry are oil oxidation and oil waste after frying. Sunflower seed oil is one of the vegetable oils most commonly used in the food industry. Two variables were applied to the low oleic sunflower seed oil in this work i.e. heating temperature (180-210-240°C) and
Histological alterations in the intestinal epithelium caused by the inclusion of full-fat sunflower kernels in broiler chicken diets.
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Changes in small intestinal morphology (jejunum) were examined at 28 d of age in chicks fed with full-fat sunflower kernels (FFSK)-based diets. Jejunal mucosa of chicks (six chicks per treatment) were embedded in Epon-812 for examination by a conventional electron microscope procedure. A portion of
Interaction between proteins containing homeodomains associated to leucine zippers from sunflower.
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A strategy based on the use of PCR with one degenerate oligonucleotide deduced from conserved sequences and lambda gt10 primers was used to isolate homeobox containing sequences from sunflower stem and root cDNA libraries. Six different partial cDNAs coding for the first 48 amino acids of
Boron and calcium sites involved in indole-3-acetic Acid transport in sunflower hypocotyl segments.
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Sunflower (Helianthus annuus L. cv Russian Mammoth) hypocotyl segments deficient in either B or Ca exhibited a higher rate of potassium leakage, compared to nondeficient segments. Potassium leakage, used here as an indication of membrane integrity, was completely reversed by the addition of
Abnormal anther development and high sporopollenin synthesis in benzotriazole treated male sterile Helianthus annuus L.
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Foliar application of 1.5% benzotriazole induced 100% pollen sterility in H. annuus. Pollen abortion in treated plants was mainly associated with abnormal behaviour of tapetum. A limited number of anther locule showed early degeneration of tapetum followed by disintegration of sporogenous tissues.
Identification of non-TIR-NBS-LRR markers linked to the Pl5/ Pl8 locus for resistance to downy mildew in sunflower.
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The resistance of sunflower, Helianthus annuus L., to downy mildew, caused by Plasmopara halstedii, is conferred by major genes denoted by Pl. Using degenerate and specific primers, 16 different resistance gene analogs (RGAs) have been cloned and sequenced. Sequence comparison and Southern-blot
Effect of oil flushing with nitrogen on the quality and oxidative stability of coldpressed rapeseed and sunflower oils.
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BACKGROUND
Oxidative stability means resistance to oxidation during purchase, processing and storage and is a key quality indicator of edible fats. Oils ought to be stored in dark-glass bottles, at low temperatures and with no access of light in order to effectively preserve their oxidative
A bacterial artificial chromosome (BAC) library for sunflower, and identification of clones containing genes for putative transmembrane receptors.
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Sunflower (Helianthus annuus L.) is an economically important oil seed crop with an estimated genome size of 3000 Mb. We have constructed a bacterial artificial chromosome (BAC) library for sunflower, which represents an estimated 4- to 5-fold coverage of the genome. Nuclei isolated from young
Comparative analysis of NBS domain sequences of NBS-LRR disease resistance genes from sunflower, lettuce, and chicory.
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Plant resistance to many types of pathogens and pests can be achieved by the presence of disease resistance (R) genes. The nucleotide binding site-leucine rich repeat (NBS-LRR) class of R-genes is the most commonly isolated class of R-genes and makes up a super-family, which is often arranged in the
Effect of chromium on growth attributes in sunflower (Helianthus annuus L.).
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Heavy metal soil pollution takes place when the metal concentration of soil exceeds natural background level and causes ecological destruction and deterioration of the environment. In the present study, a pot experiment was conducted to evaluate the effect of chromium-contaminated soil in sunflower
Expression and in vitro targeting of a sunflower oleosin.
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Two distinct cDNAs encoding oleosins (oil body proteins) have been identified by degenerate PCR as transcripts present in the developing seeds of sunflower (Helianthus annuus L. cv. Dwarf Sunbred). One (pSOM) of these is closely related to a reported sunflower oleosin, whilst the other (pSO5) has
Scanning electron microscopic studies and growth response of the plants of Helianthus annuus L. grown on tannery sludge amended soil.
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The plants of Helianthus annuus L. var. modern were grown in the soil amended with different amounts of tannery sludge (10%, 25%, 35%, 50%, 75% and 100%), collected from Wastewater Treatment Plant Jajmau, Kanpur (Uttar Pradesh, India) under field conditions. The effect of tannery sludge amendments
Evidence for Degradation of the Chrome Yellows in Van Gogh's Sunflowers: A Study Using Noninvasive In Situ Methods and Synchrotron-Radiation-Based X-ray Techniques.
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This paper presents firm evidence for the chemical alteration of chrome yellow pigments in Van Gogh's Sunflowers (Van Gogh Museum, Amsterdam). Noninvasive in situ spectroscopic analysis at several spots on the painting, combined with synchrotron-radiation-based X-ray investigations of two
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