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Showing 1 to 20 of 40 for “"exudation"”.
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A Comparison of Theoretical and Actual Coumarin Exudation Under Iron Limitation to Understand Root Exudation Mechanics
… influential metabolites from roots. Root exudation may be driven by multiple unique mass-transport mechanisms, including active and passive transport types, though the latter is not well-studied despite being labelled a significant driver of low molecular weight metabolite exudation. This …
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Investigating Root Storage and Exudation in the Brachypodium Genus
… dynamics we investigate in this study are root exudation and root storage. We look at the difference of exudation between annual and perennial species and compare the levels of carbon storage in roots that arise from shoot apical meristems or from root apical meristems. These two functions occur …
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A modeling framework for characterizing root exudation-driven geochemical dynamics in the Critical Zone
… Zone (CZ) hydrobiogeochemistry through root exudation, the process by which plant roots respond to their environment and release reactive carbon (C) into the soil to influence soil microbial symbionts to their advantage. Although previous studies have demonstrated that such root processes …
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Influence of Trichoderma Harzianum Rifai on growth, chemical compositions and root exudation of axenic tobacco
Tobacco plants (<i>Nicotiana tabacum</i> L. 'Virginia Gold') grown axenically in gnotobiotic flexible vinyl isolators, were inoculated after 44 days growth with washed conidia of <i>Trichoderma harzianum</i> Rifai by introducing conidia into the rooting medium at a concentration of 1.08 X …
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Nutrient uptake and exudation patterns of nitrogenous substances and polyphenols in the kelp Ecklonia Maxima (Osbeck) Papenfuss
Exudation patterns of organically bound nitrogen and polyphenol substances, as well as the uptake of nitrate, ammonium and phosphate were studied in the kelp Ecklonia maxima (Phaeophyceae) in ex-situ experiments. It was found that exudation of organic materials only rarely followed a straight …
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Influence of Penicillium simplicissimum (Oud.) Thom and Penicillium citrinum Thom on growth, chemical composition and root exudation of axenic marigold
Axenic marigold (Tagetes erecta L.) were grown in quartz sand free of organic compounds and one-half strength Hoagland and Arnon nutrient solution plus chelated iron, in individual plant containers, designed for collecting root exudates, inside sterile gnotobiotic flexible plastic isolators. Plant …
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Effects of kinetin on distribution and exudation of free sterols and free fatty acids in Arachis hypogaea L. 'Argentine' under axenic conditions
… effects attributed to kinetin. Decrease in root exudation in the 10⁻⁶M treatment may have been due to altered membrane integrity. Increase in the sitosterol/ stigmasterol ratio in stems of treated plants may have been a result of delayed senescence. Trends showed transport of free fatty acids and …
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Tetrahedral Mesh Improvement, Algorithms and Experiments
… Delaunay mesh. This is referred to as the sliver exudation algorithm. Their theoretical bound on the achieved minimum mesh quality is a constant that is positive but exceedingly small. We perform computational experiments to testify the practical effectiveness of sliver exudation.
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Effects of Cereal Cyst Nematode Infection on Resistant and Susceptible Barley
… resistant barley cultivars were studied using exudation and suction methods to measure hydraulic conductivity (Lpr). Hydrostatic Lpr obtained using the suction method was assessed in the presence of xylem tension which was exerted at the shoot base using a vacuum while osmotic Lpr obtained …
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Some Effects of 2,4-Dichlorophenoxyacetic Acid on Sweet Corn (Zea Mays Rugosa L.) With Emphasis on Yield, Tillering, Root Development and Exudation of Electrolytes From Roots and Stems
Made available in DSpace on 2014-12-04T19:49:29Z (GMT). No. of bitstreams: 1 6206233.pdf: 4220269 bytes, checksum: 9f76f67de6d97cd4905ca19960061749 (MD5) Previous issue date: 1962
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Development of a System for Real-Time Measurements of Metabolite Transport in Plants Using Short-Lived Positron-Emitting Radiotracers
… including that released from the roots via exudation or respiration, in two grass species. The <sup>11</sup>CO<sub>2</sub> gas was introduced to a leaf on the plants grown at either ambient or elevated atmospheric CO<sub>2</sub>. Two sequential measurements were performed per day on each …
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ROLE OF HYDROCORTISONE 21-HEMISUCCINATE DURING CARRAGEENAN-INDUCED ACUTE INFLAMMATION
… produced supernatant that inhibited fluid exudation. The result thus indicates that the action of histamine may be partially mediated by factors released by blood leucocytes.
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Pollen digestion in flower-feeding Scarabaeidae : protea beetles (Cetoniini) and monkey beetles (Hopliini)
… may use osmotic shock, pseudo-germination, exudation, microbial digestion or enzyme penetration to gain access to the protoplasmic contents. Further study is needed to define the details of these methods and whether they are all in use.
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Chondrocyte gene expression and intracellular signaling pathways in cartilage mechanotransduction
… transient hydrostatic pressure buildup and fluid exudation from the compacted matrix until relaxation leads to a new equilibrium compressed state. Dynamic compression induces cyclic matrix deformation, hydrostatic pressures, fluid flows, and streaming currents. Dynamic tissue shear causes cyclic …
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Unraveling an uncertain future for the Great Basin: how climate, grass invasion, and wildfire interact to drive ecosystem function
… to identify how soil aridity influences root exudation by cheatgrass (Bromus tectorum), an invasive annual grass, alters the cycling of carbon (C) and nitrogen (N) in the soil. We observed that cheatgrass was able to uniquely access N in dry soils, and that changes in soil condition that …
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DISCLOSING THE ROLE OF ROOT EXUDATES IN MODULATING THE INTERACTION BETWEEN PLANT AND XENOBIOTIC DEGRADING BACTERIA
… plant physiology and altered Arabidopsis exudation pattern. Remarkably, the secretion of scopoletin, a plant secondary metabolite with known antimicrobial characteristics, was inhibited in presence of PCB stress, thus putatively remodeling the rhizosphere ecological niche to provide more …
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Phosphorous uptake and utilization efficiency in cluster root and non-cluster root forming species of the Core Cape Subregion, South Africa
… cluster root and root hair proliferation and exudation of organic acids and acid phosphatases (APase) from the roots. Crop yield is limited worldwide due to the unavailability of P and P-fertilization is showing limited success due to soil retention. Sustainable management of this would …
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Effect of oxygen and carbon dioxide tensions on release of sugars from peanut roots under gnotobiotic conditions
… investigation were: (1) to explore an area, root exudation of peanuts, in which no previous work has been reported; (2) to study the effects of O₂ and CO₂ tensions, both individually and combined, on peanut root exudation; and (3) to determine quantitatively the sugars exuded from the roots of …
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The impact of plant root biomass on the biodegradation and bioaccessibility of hydrocarbons in soil
… supporting the role of root decay, turnover and exudation for the biodegradation of PAHs in contaminated soil as defining mechanisms by which plants can promote the biodegradation of this type of contaminants.
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