On the roots of nitrogen uptake
Web14 de abr. de 2024 · This paper explores the effects of water and nitrogen management on drip irrigated rice root morphology, nitrogen metabolism and yield, clarifies the relationship between root characteristics and yield formation. Normal irrigation (W1, 10,200 m3/hm2) and limited irrigation (W2, 8670 m3/hm2, 85% of W1) were set with nitrogen-efficient variety … Web1 de abr. de 2009 · Several mechanisms by which organic N (ON) uptake and assimilation may increase crop NUE are proposed, such as by reducing N assimilation costs, promoting root biomass growth, shaping N cycling microbial communities, recapturing exuded N compounds, and aligning the root uptake capacity to the soil N supply in highly fertilized …
On the roots of nitrogen uptake
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WebA two way movement of nitrogen compounds was found to occur between root and external medium. Factors such as initial N content in the roots, species of plant and external concentration of N highly affect the extent to which this two-way movement proceeds. WebWendy had a significantly higher total dry matter production when grown on NO3 compared to NH4, whereas growth of Mirena was best on NH4 (P<0.05). Dry weights of Benita and Jacky were not affected by the N source. Cadmium concentrations in shoots (and roots) of plants grown on NH4 were significantly higher than in plants grown on NO3.
Web13 de mai. de 2024 · Keywords: Brassica napus, genetic variability, low-N inputs, Nitrogen Uptake Efficiency, Nitrogen Use Efficiency, roots, Specific Nitrogen Uptake Citation: Vazquez-Carrasquer V, Laperche A, Bissuel-Bélaygue C, Chelle M and Richard-Molard C (2024) Nitrogen Uptake Efficiency, Mediated by Fine Root Growth, Early Determines … WebArbuscular mycorrhizal (AM) fungi are obligate symbionts that colonize the roots of more than 80% of land plants. Experiments on the relationship between the host plant and AM …
Web14 de jan. de 2024 · Nitrogen (N) is an essential plant nutrient, and plants can take up N from several sources, including via mycorrhizal fungal associations. The N uptake patterns of understory plants may vary beneath different types of overstory trees, especially through the difference in their type of mycorrhizal association (arbuscular mycorrhizal, AM; or … Web25 de abr. de 1996 · The uptake of nitrate and ammonium by the roots and leaves of Posidonia oceanica were determined between February 1997 and June 1999 by in situ experiments using the isotope 15 of nitrogen ( 15 N) as… Expand 66 PDF Inorganic nitrogen uptake and related enzymatic activity in the seagrass Zostera noltii A. …
Web22 de nov. de 2007 · Significant spatial variability in NH 4 +, NO 3 − and H + net fluxes was measured in roots of young seedlings of Douglas-fir (Pseudotsuga menziesii) and lodgepole pine (Pinus contorta) with ion-selective microelectrodes.Seedlings were grown with NH 4 +, NO 3 −, NH 4 NO 3 or no nitrogen (N), and were measured in solutions containing one …
WebHá 1 dia · It has been proposed that NO 3 − reduction rate in shoots controls NO 3 − uptake in roots by translocation of malate in phloem (Touraine et al., 1992). Malate in roots is decarboxylated and the produced HCO 3 − is released to solute medium to exchange with NO 3 − (Touraine et al., 1992). Hence, phloem malate transport is critical for NO ... north beach primorskoWeb1 de jun. de 2010 · Nitrogen uptake and assimilation during the grain filling period is generally insufficient for the high demand of the seeds, and the … north beach realtyWebOn the roots of nitrogen uptake Roots are equipped with delicate nutrient uptake systems, which respond to systemic signals of nutrient demand, ... concert to regulate N … north beach public skate parkWeb31 de mai. de 2011 · The ability to take up DON enables seagrasses and macroalgae to shortcut N cycling and gives them access to additional N resources, and in oligotrophic environments, uptake of amino acids by roots may provide seagRasses with a competitive advantage over macro algae. north beach real estate ocean shores waWeb18 de mar. de 2010 · Once taken up by root cells, nitrate must be transported across several cell membranes and distributed in various tissues. AtNRT1·5, located on the plasma membrane of root pericycle cells close to the xylem, is involved in long-distance transport of nitrate from the root to the shoot (Lin et al., 2008). how to replace optifineWeb30 de abr. de 1998 · Classic 15 N-tracer technique cannot separate uptake of intact amino acids from uptake of mineralized nitrogen. 14 C-labelling has been used in studies of hydroponic (soil-free, nutrient-water ... how to replace oreck beltWebFactors such as initial N content in the roots, species of plant and external concentration of N highly affect the extent to which this two-way movement proceeds. Further investigations are needed for more understanding of the nitrogen balance between plant roots and external medium. INTRODUCTION Most of the work on ion uptake seems to ... north beach realty myrtle beach sc