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hordeum comosum/hypoxia
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Soluble sugar availability of aerobically germinated barley, oat and rice coleoptiles in anoxia.
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Physiological and metabolic responses to anoxia were compared for aerobically germinated seedlings of barley (Hordeum vulgare), oat (Avena sativa) and rice (Oryza sativa). Coleoptile growth of barley, oat and rice seedlings was suppressed by a 24 h-anoxic stress, but the growth of the rice
Changes in k, rb, and na transport to shoots after anoxia.
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The effect of anoxia on subsequent uptake and transport of K, Rb, and Na was examined with seedlings of barley (Hordeum vulgare L.), corn (Zea mays L.), and tall fescue (Lolium x Festuca hybrid derivative) to further our understanding of xylem loading. Roots were incubated in solutions depleted of
Oxygen deficiency in barley (Hordeum vulgare) grain during malting.
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The steep water is generally aerated in industrial barley malting. However, it is questionable whether oxygen actually reaches the embryo, which remains entrapped under the husk, testa, and pericarp until chitting occurs. The aim of our study was to investigate whether barley embryos experience
Microelectrode ion and O2 fluxes measurements reveal differential sensitivity of barley root tissues to hypoxia.
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Hypoxia-induced changes in net H+, K+ and O2 fluxes across the plasma membrane (PM) of epidermal root cells were measured using the non-invasive microelectrode ion flux measurement (MIFE) system in elongation, meristem and mature root zones of two barley (Hordeum vulgare L.) varieties contrasting in
Conditioning of Roots with Hypoxia Increases Aluminum and Acid Stress Tolerance by Mitigating Activation of K+ Efflux Channels by ROS in Barley: Insights into Cross-Tolerance Mechanisms.
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Aluminum (Al) is prevalent in soils, but Al toxicity is manifested only under acid conditions. It causes severe damages to the root system. Short-term waterlogging stress can occur simultaneously with Al toxicity in areas with high rainfall or an inappropriate irrigation pattern. Barley (Hordeum
[Effect of hypobaric hypoxia on the dehydrogenase activities of respiration and photosynthetic metabolism in barley seedlings].
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Hypobaric hypoxia effects on enzymes of photosynthesis and respiration metabolism were explored in 8-day old seedlings of barley Hordeum vulgare L. in the dark or light. 16-hour exposure in rarified atmosphere that causes reductions of partial pressure of air gases and, consequently, hypobaric
Differences in the Anaerobic Lactate-Succinate Production and in the Changes of Cell Sap pH for Plants with High and Low Resistance to Anoxia.
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Anaerobically treated seedlings of Oryza sativa L. var arborio accumulated in their shoots more succinate than lactate and cell sap became alkaline. Conversely, in Triticum aestivum L. var MEK 86 lactate accumulation was far higher than that of succinate and cell sap was acidified. Anoxia clearly
Cell-Based Phenotyping Reveals QTL for Membrane Potential Maintenance Associated with Hypoxia and Salinity Stress Tolerance in Barley.
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Waterlogging and salinity are two major abiotic stresses that hamper crop production world-wide resulting in multibillion losses. Plant abiotic stress tolerance is conferred by many interrelated mechanisms. Amongst these, the cell's ability to maintain membrane potential (MP) is considered to be
Oxygen deficiency and salinity affect cell-specific ion concentrations in adventitious roots of barley (Hordeum vulgare).
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Oxygen deficiency associated with soil waterlogging adversely impacts root respiration and nutrient acquisition. We investigated the effects of O2 deficiency and salinity (100 mM NaCl) on radial O2 concentrations and cell-specific ion distributions in adventitious roots of barley (Hordeum vulgare).
The waterlogging/salinity interaction in higher plants revisited - focusing on the hypoxia-induced disturbance to K + homeostasis
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Salinity and waterlogging (root-zone hypoxia) are abiotic stresses that often occur together on saltland. It is widely recognised that these two factors interact to increase Na+ and/or Cl- concentrations in shoots, which can have adverse effects on plant growth and survival. This review expands on
Expression of phytoglobin affects nitric oxide metabolism and energy state of barley plants exposed to anoxia.
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Class 1 plant hemoglobins (phytoglobins) are upregulated during low-oxygen stress and participate in metabolism and cell signaling via modulation of the levels of nitric oxide (NO). We studied the effects of overexpression and knockdown of the class 1 phytoglobin gene in barley (Hordeum vulgare L.)
Metabolic acclimation to hypoxia in winter cereals : low temperature flooding increases adenylates and survival in ice encasement.
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Cold hardened seedlings of winter wheat (Triticum aestivum L. em Thell) show an hypoxic hardening response: an exposure to low temperature flooding increases the tolerance of plants to a subsequent ice encasement exposure. Seedlings of winter barley (Hordeum vulgare L.) do not show such a response
Malting revisited: Germination of barley (Hordeum vulgare L.) is inhibited by both oxygen deficiency and high carbon dioxide concentrations.
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During malting, barley (Hordeum vulgare L.) seeds are germinated to promote the mobilisation of storage compounds. Germination is strongly influenced by O2 and CO2; however, any distinction between the particular effects is missing. Since, in this study, the ambient O2 concentration was maintained
Effects of Iron and Oxygen on Chlorophyll Biosynthesis : I. IN VIVO OBSERVATIONS ON IRON AND OXYGEN-DEFICIENT PLANTS.
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Corn (Zea mays, L.), bean (Phaseolus vulgaris L.), barley (Hordeum vulgare L.), spinach (Spinacia oleracea L.), and sugarbeet (Beta vulgaris L.) grown under iron deficiency, and Potamogeton pectinatus L, and Potamogeton nodosus Poir. grown under oxygen deficiency, contained less chlorophyll than the
Heterologous expression of Vitreoscilla haemoglobin in barley (Hordeum vulgare).
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The vhb gene encoding Vitreoscilla haemoglobin (VHb) was transferred to barley with the aim of studying the role of oxygen availability in germination and growth. Previous findings indicate that VHb expression improves the efficiency of energy generation during oxygen-limited growth, and germination
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