(n.) A genus (Lemna) of small plants, seen floating in great quantity on the surface of stagnant pools fresh water, and supposed to furnish food for ducks; -- called also duckmeat.
Example Sentences:
(1) Duckweed commonly refers to a group of floating, flowering plants of the family Lemnaceae.
(2) Evidence for the sequence of duckweed (Lemna minor) chloroplast 5S rRNA was derived from the analysis of partial and complete enzymic digests of the 32P-labelled molecule.
(3) Growth inhibition of duckweed could be achieved at approx 20 ppb terbutryne in steady state.
(4) The period of the circadian rhythm of uptake of K+ by Lemna gibba strain G3 (duckweed), cultured in a flow medium, was shortened by continuous application of 0.5 mM tetraethylammonium chloride (TEA), which functions as a K+ channel blocker in both animal and plant cells.
(5) Spirodela (Duckweed) was thus used to ascertain the response of the nucleocytoplasmic (nc) and plastid ribosomal RNA metabolisms to partial and total carbon deprivation.
(6) The possible sequence of the chloroplast 5S rRNA from three other flowering plants was deduced by complete digestion with T1 ribonuclease and comparison of the sequences of the oligonucleotide products with homologous sequences in the duckweed 5S rRNA.
(7) Many duckweed species have been studied, primarily of the Lemna and Spirodela genera.
(8) Radioactivity from d-[l-(14)C]glucosamine is incorporated into ethanol-insoluble compounds of high molecular weight in a number of plant tissues, including roots of corn (Zea mays), callus cells of sycamore (Acer pseudoplatanus), axenic cultures of duckweed (Lemna minor) and germinating seedlings of corn, broad bean (Vicia faba) and barley (Hordeum vulgare).
(9) Duckweed and algae represent different levels of complexity in the plant kingdom.
(10) Values for the half-life of Lemna minor (duckweed) protein determined by the new method are compared with values obtained by other methods.
(11) Herbicidal effectiveness of terbutryne-EVA formulation has been investigated in a laboratory-scale simulated flow system device with duckweed plants (Lemna minor) as test organism.
(12) Thus the specific activity of the duckweed enzyme is more than two orders of magnitude higher than that of the enzyme from rat testes.
(13) In the short, single-screen film Lock Again, there is a marvellous sequence in which two young men in sailor's uniforms - both of whom look as if they have been in a fight - ferry an imperious girl across a pond thick with duckweed in a rowing boat.
(14) A new method is described for measuring environmental stress through the use of the duckweed (Lemna minor) rhizosphere.
(15) Differences in duckweed test methodology occur with regard to test types, test vessels, control tests, nutrient media, end points, and applications.
(16) Other studies, however, indicate that duckweed plants are as sensitive to toxicity as other aquatic species.
(17) Duckweed (Spirodela oligorrhiza, Kurz) is a sensitive indicator of 1,1'-alkyl-4,4'-bipyridylium salt (viologen) herbicidal potency.
(18) Duckweed plants are fast growing and widely distributed.
(19) Orellanine, a toxic principle of Cortinarius orellanus Fr., efficiently inhibited the photosynthetic activity of duckweed, Lemna minor L., at a concentration of 0.4 mM.
(20) The present paper deals with the separation of cells from soluble compounds of blood by means of exclusion chromatography using a recently described vesicular packing material made from the cell wall framework of the small duckweed Wolffia arrhiza.
Plant
Definition:
(n.) A vegetable; an organized living being, generally without feeling and voluntary motion, and having, when complete, a root, stem, and leaves, though consisting sometimes only of a single leafy expansion, or a series of cellules, or even a single cellule.
(n.) A bush, or young tree; a sapling; hence, a stick or staff.
(n.) The sole of the foot.
(n.) The whole machinery and apparatus employed in carrying on a trade or mechanical business; also, sometimes including real estate, and whatever represents investment of capital in the means of carrying on a business, but not including material worked upon or finished products; as, the plant of a foundry, a mill, or a railroad.
(n.) A plan; an artifice; a swindle; a trick.
(n.) An oyster which has been bedded, in distinction from one of natural growth.
(n.) A young oyster suitable for transplanting.
(n.) To put in the ground and cover, as seed for growth; as, to plant maize.
(n.) To set in the ground for growth, as a young tree, or a vegetable with roots.
(n.) To furnish, or fit out, with plants; as, to plant a garden, an orchard, or a forest.
(n.) To engender; to generate; to set the germ of.
(n.) To furnish with a fixed and organized population; to settle; to establish; as, to plant a colony.
(n.) To introduce and establish the principles or seeds of; as, to plant Christianity among the heathen.
(n.) To set firmly; to fix; to set and direct, or point; as, to plant cannon against a fort; to plant a standard in any place; to plant one's feet on solid ground; to plant one's fist in another's face.
(n.) To set up; to install; to instate.
(v. i.) To perform the act of planting.
Example Sentences:
(1) Behind her balcony, decorated with a flourishing pothos plant and a monarch butterfly chrysalis tied to a succulent with dental floss, sits the university’s power plant.
(2) A phytochemical investigation of an ethanolic extract of the whole plant of Echites hirsuta (Apocynaceae) resulted in the isolation and identification of the flavonoids naringenin, aromadendrin (dihydrokaempferol), and kaempferol; the coumarin fraxetin; the triterpene ursolic acid; and the sterol glycoside sitosteryl glucoside.
(3) Herbalists in Baja California Norte, Mexico, were interviewed to determine the ailments and diseases most frequently treated with 22 commonly used medicinal plants.
(4) This paper has considered the effects and potential application of PFCs, their emulsions and emulsion components for regulating growth and metabolic functions of microbial, animal and plant cells in culture.
(5) Labour MP Jamie Reed, whose Copeland constituency includes Sellafield, called on the government to lay out details of a potential plan to build a new Mox plant at the site.
(6) Plaque size, appearance, and number were influenced by diluent, incubation temperature after nutrient overlay, centrifugation of inoculated tissue cultures, and number of host cells planted initially in each flask.
(7) Urban hives boom could be 'bad for bees' What happened: Two professors from a University of Sussex laboratory are urging wannabe-urban beekeepers to consider planting more flowers instead of taking up the increasingly popular hobby.
(8) Equal numbers of handled and unhandled puparia were planted out at different densities (1, 2, 4 or 8 per linear metre) in fifty-one natural puparial sites in four major vegetation types.
(9) The lambs of the second group were given 1200-1500 g of concentrate pellets and 300 g chopped wheat straw, and those of the third group were given 800 and 1050 g each of concentrate pellets, and 540 g and 720 g of pellets of whole maize plant containing 40 per cent.
(10) In later years, the church built a business empire that included the Washington Times newspaper, the New Yorker Hotel in Manhattan, Bridgeport University in Connecticut, as well as a hotel and a car plant in North Korea.
(11) One example of this increased data generation is the emergence of genomic selection, which uses statistical modeling to predict how a plant will perform before field testing.
(12) The effects of lowering the temperature from 25 degrees C to 2-8 degrees C on carbohydrate metabolism by plant cells are considered.
(13) He fashioned alliances with France in the 1950s, and planted the seeds for Israel’s embryonic electronics and aircraft industries.
(14) While there has been almost no political reform during their terms of office, there have been several ambitious steps forward in terms of environmental policy: anti-desertification campaigns; tree planting; an environmental transparency law; adoption of carbon targets; eco-services compensation; eco accounting; caps on water; lower economic growth targets; the 12th Five-Year Plan; debate and increased monitoring of PM2.5 [fine particulate matter] and huge investments in eco-cities, "clean car" manufacturing, public transport, energy-saving devices and renewable technology.
(15) Results in this preliminary study demonstrate the need to evaluate the hazard of microbial aerosols generated by sewage treatment plants similar to the one studied.
(16) However, it was concluded that the biochemical models fail to give a complete description of photosynthesis in plants using the C4-dicarboxylic acid cycle.
(17) Subsequently the plant protein was partially purified from leaf extract.
(18) Ecological risk assessments are used by the US Environmental Protection Agency (US EPA) and other governmental agencies to assist in determining the probability and magnitude of deleterious effects of hazardous chemicals on plants and animals.
(19) A model is proposed for the study of plant breeding where the self-fertilization rate is of importance.
(20) The behavior and effects of atmospheric emissions in soils and plants are discussed.