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pufa/kartoffel

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Novel study on the elicitation of hypersensitive response by polyunsaturated fatty acids in potato tuber.

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A GC-MS procedure was carried out for the simultaneous and unequivocal quantitation of both potato phytoalexin (rishitin and lubimin) accumulation and the rate of disappearance of polyunsaturated fatty acids (PUFA) and some of their esters tested as possible elicitors. Potato 5-lipoxygenase and

Reduction of divinyl ether-containing polyunsaturated fatty acids in transgenic potato plants.

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Oxygenated polyunsaturated fatty acids synthesized via the lipoxygenase pathway play a role in plant responses to pathogen attack. In solanaceous plants, the preferential stimulation of the 9-lipoxygenase pathway in response to pathogen infection leads to the formation of the divinyl
The effects of arachidonic and linoleic acids, separately and in co-operation with N-acetylglucosamine oligomers, on Solanum tuberosum plant suspension cell cultures were investigated in terms of the fluorescent oxygen-activated-species-sensitive dye 2',7'-dichlorofluorescin diacetate. The inductors

Production of omega-3 polyunsaturated fatty acids from cull potato using an algae culture process.

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Algal cultivation for converting cull potato to docosahexaenoic acid (DHA) was studied. Schizochytrium limacinum SR21 was selected as the better producing strain, compared with Thraustochytrium aureum because of higher cell density and DHA content. Used as both carbon and nitrogen source, an optimal

Relationship among lipoperoxides, jasmonates and indole-3-acetic acid formation in potato tuber after wounding.

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Plant responses to biotic and abiotic stress can be mediated by oxidised products and in this study we analysed the relation among some of them and the growth factor indole-3-acetic acid (IAA). The plant material used was potato tuber sliced below bud and incubated for different lengths of time
Lipoxygenases in plants have been implicated in the activation of defense responses against injury/infection. Pathogen-derived polyunsaturated fatty acids, such as arachidonic acid, eicosapentaenoic acid and their metabolites have been shown to elicit defense responses against pathogen infection in
We have studied the aerobic oxidation of linoleyl alcohol (LAL) by potato tuber lipoxygenase in the presence of 0.02% (w/v) non-ionic detergent Lubrol PX (and its analog C12E10) and 0.1 mM sodium dodecyl sulfate to investigate the role of carboxylic group in substrate binding. While the enzyme
Eicosapentaenoic and arachidonic acids in extracts of Phytophthora infestans mycelium were identified as the most active elicitors of sesquiterpenoid phytoalexin accumulation in potato tuber slices. These fatty acids were found free or esterified in all fractions with elicitor activity including
The influence of host cultivar on the lipid levels provided by a female to her progeny was investigated with Oil Red O stain and a quantitative image analyzer. A population of Globodera rostochiensis was multiplied at Toralapa Field Station in Bolivia on 25 different potato cultivars grown in that
Previously, polyunsaturated fatty acids (PUFA) from linseed oil were effectively protected (>80%) against biohydrogenation through polyphenol-oxidase-mediated protein crosslinking of an emulsion, prepared with polyphenol oxidase (PPO) extract from potato tuber peelings. However, until now, emulsions
Plant defensive strategies bring into play blends of compounds dependent on the type of attacker and coming from different synthesis pathways. Interest in the field is mainly focused on volatile organic compounds (VOCs) and jasmonic acid (JA). By contrast, little is known about the oxidized

Physicochemical properties and oxidative stability of frying oils during repeated frying of potato chips.

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Physicochemical properties and oxidative stability of refined coconut oil (RCO), refined soybean oil (SBO), pure olive oil (POO), and vegetable shortening (VST) during repeated frying of potato chips were determined. Polyunsaturated fatty acids of all the oils significantly decreased after frying.

Impact of post-anoxia stress on membrane lipids of anoxia-pretreated potato cells. A re-appraisal.

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The importance of lipid peroxidation and its contributing pathways (via reactive oxygen species and lipoxygenase) during post-anoxia was evaluated with respect to the biphasic behavior of membrane lipids under anoxia (A. Rawyler, D. Pavelic, C. Gianinazzi, J. Oberson, R. Brändle [1999] Plant Physiol

Oxylipin profile and antioxidant status of potato tubers during extended storage at room temperature.

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Potato tubers (cv. Bintje) (Solanum tuberosum L.) were stored under extreme conditions at 20 degrees C for 350 days without sprout inhibitors in order to assess whether aging- and/or senescence-related processes occurred. Under these extreme storage conditions, multiple sprouting followed by the

Early physiological and cytological events induced by wounding in potato tuber.

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The response of potato tuber (Solanum tuberosum L. cv. Kennebec) to mechanical wounding was investigated at different times. Changes in the levels of indole-3-acetic acid (IAA), polyunsaturated fatty acids (PUFAs) and lipid hydroperoxides (LOOHs) were monitored up to 120 min after wounding and
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