acetaldehyde/hypoxia

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Carbon isotope analysis of acetaldehyde emitted from leaves following mechanical stress and anoxia.

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Although the emission of acetaldehyde from plants into the atmosphere following biotic and abiotic stresses may significantly impact air quality and climate, its metabolic origin(s) remains uncertain. We investigated the pathway(s) responsible for the production of acetaldehyde in plants by studying

[Influence of hypoxia on the effects of ethanol and acetaldehyde].

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During experiments on male SHK mice it was established that a preliminary normobaric normocapnic hypoxic stimulation (30-minute inhalation of a gas mixture containing 10% of oxygen) increased the animal organism resistance to toxic effects of ethanol and its metabolite acetaldehyde.

Dynamics of Acetaldehyde Production during Anoxia and Post-Anoxia in Red Bell Pepper Studied by Photoacoustic Techniques.

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Acetaldehyde (AA), ethanol, and CO2 production in red bell pepper (Capsicum annum L.) fruit has been measured in a continuous flow system as the fruit was switched between 20% O2 and anaerobic conditions. Minimum gas phase concentrations of 0.5 nL L-1, 10 nL L-1, and 1 mL L-1, respectively, can be

[Possible reasons for bilirubin accumulation in the brain of newborn animals during oxygen deficiency].

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An increase in content of bilirubin was detected in brain tissue of newborn rats with chronic interrupted hypoxic hypoxia occurred during pre- and neonatal periods. Accumulation of bilidiene in animal brain tissues appears to occur due to the following causative factors: tissue acidosis, developed

Anoxia promotes gravitropic curvature in rice pulvini but inhibits it in wheat and oat pulvini.

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Gravitropic curvature of pulvini of wheat and oat stem segments gradually declined with decreasing atmospheric O₂ concentration and was almost completely blocked under anoxia, whereas that of rice stem segments was enhanced under hypoxia and anoxia. Anoxia substantially increased the ethanol content

Modulating hypoxia-induced hepatocyte injury by affecting intracellular redox state.

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Hypoxia-induced hepatocyte injury results not only from ATP depletion but also from reductive stress and oxygen activation. Thus the NADH/NAD+ ratio was markedly increased in isolated hepatocytes maintained under 95% N2/5% CO2 in Krebs-Henseleit buffer well before plasma membrane disruption

Placental hypoxia and foetal development versus alcohol exposure in pregnancy.

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OBJECTIVE To examine the causes of variability in the effect of maternal drinking on the foetus, with particular reference to the pattern, frequency and duration of the period of drinking, differences in maternal, foetal and placental metabolism of ethanol/acetaldehyde, and genetic

[Endogenous ethanol in the blood and tissues of rats with hypobaric hypoxia].

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Albino male rats weighing 160-180 g were used to study the effect of short-term hypobaric hypoxia (ascent in an altitude chamber to 2500 m and 5000 m for 1 hr) on endogenous ethanol measured in blood, brain and liver; simultaneously enzymes responsible for ethanol and acetaldehyde metabolism were

Sulfoxide-containing aromatic nitrogen mustards as hypoxia-directed bioreductive cytotoxins.

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A series of diaryl and alkylaryl sulfoxide-containing nitrogen mustards were synthesized and evaluated for their hypoxia-selective cytotoxicity against V-79 cells in vitro as well as for their metabolism profiles with the rat S-9 fractions. In general, the diaryl sulfoxides (4, 5, and 7-9) showed

[Effects of root zone hypoxia on respiratory metabolism of cucumber seedlings roots].

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With the seedlings of Lübachun No. 4, a hypoxia-resistant cultivar, and Zhongnong No. 8, a hypoxia-sensitive cultivar, as test materials, and by the method of solution culture, this paper studied the effects of root zone hypoxia on their roots' respiratory metabolism. The results showed that root

Acetaldehyde and ethanol biosynthesis in leaves of plants.

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Leaves of terrestrial plants are aerobic organs, and are not usually considered to possess the enzymes necessary for biosynthesis of ethanol, a product of anaerobic fermentation. We examined the ability of leaves of a number of plant species to produce acetaldehyde and ethanol anaerobically, by

Genetic and biochemical analysis of anaerobically-induced enzymes during seed germination of Echinochloa crus-galli varieties tolerant and intolerant of anoxia.

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To compare the regulation of anaerobic metabolism during germination in anoxia-tolerant and intolerant plants, enzymes associated with anaerobic metabolism such as sucrose synthase, aldolase, enolase, pyruvate decarboxylase (PDC), alcohol dehydrogenase (ADH), and aldehyde dehydrogenase (ALDH) were

Root anoxia effects on physiology and emissions of volatile organic compounds (VOC) under short- and long-term inundation of trees from Amazonian floodplains.

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Volatile organic compound (VOC) emissions are affected by a variety of biotic and abiotic factors such as light intensity, temperature, CO2 and drought. Another stress factor, usually overlooked but very important for the Amazon region, is flooding. We studied the exchange of VOCs in relation to CO2

Concerted Up-regulation of Aldehyde/Alcohol Dehydrogenase (ADHE) and Starch in Chlamydomonas reinhardtii Increases Survival under Dark Anoxia.

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Aldehyde/alcohol dehydrogenases (ADHEs) are bifunctional enzymes that commonly produce ethanol from acetyl-CoA with acetaldehyde as intermediate and play a key role in anaerobic redox balance in many fermenting bacteria. ADHEs are also present in photosynthetic unicellular eukaryotes, where their

The pyruvate decarboxylase1 gene of Arabidopsis is required during anoxia but not other environmental stresses.

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Ethanolic fermentation is classically associated with flooding tolerance when plant cells switch from respiration to anaerobic fermentation. However, recent studies have suggested that fermentation also has important functions in the presence of oxygen, mainly in germinating pollen and during

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