(n.) A plant that bears naked seeds (i. e., seeds not inclosed in an ovary), as the common pine and hemlock. Cf. Angiosperm.
Example Sentences:
(1) Agrobacterium strains that were more tumorigenic on gymnosperms were more effectively induced by coniferin.
(2) The placement of these introns within the pine lpcr gene is identical to that observed in pea (Pisum sativum), suggesting conservation in gene organization between dicot and gymnosperm species.
(3) The genus Ginkgo is a north temperate gymnosperm taxon represented by fossilized leaves and wood from the early Jurassic through the Pliocene, and by the living species G. biloba native to eastern China.
(4) Genealogical relationships among gymnosperm taxa cannot be deduced unambiguously on the basis of rRNA data.
(5) As the time of divergence of at least some of these gymnosperm taxa is traceable back to the early Carboniferous, it may be concluded that the genealogical splitting of gymnosperm and angiosperm lineages occurred before this event, at least 360 million years ago, i.e., much earlier than the first angiosperm fossils were dated.
(6) These results on the gymnosperm spruce leaves, in which greening proceeds in complete darkness, being independent of the development of the water-splitting system in light, were discussed in relation to previous observations on angiosperm leaves, in which both greening and the activity generation proceed in the light.
(7) Minisatellite applications have been restricted to tetrapods, but here we demonstrate that one probe, the M13 repeat probe previously used to detect minisatellites in humans and bovines, also reveals minisatellite-bearing endonuclease fragments in gymnosperms and angiosperms.
(8) Partial sequences of 18s rRNA were obtained for 2 gymnosperms and 12 angiosperms from a wide range of families and these were analyzed with 5 other published sequences to form a phylogenetic tree.
(9) A study on the wild and cultivated medicinal plants used in the Peninsula Sorrentina (southern Italy) is reported; 129 plants distributed among 53 different families beloning to Pteridophytes, Gymnosperms and Angiosperms are used in the treatment of various human diseases.
(10) Sixty-seven widely accepted prescriptions involving 49 plant species (one species of fungi, two species of ferns, one species of gymnosperms and forty-five species of angiosperms) are presented along with details on uses.
(11) With this procedure, high-molecular-weight DNA suitable for Southern transfer experiments has been isolated from over 30 plant species including angiosperms (both dicots and monocots), a gymnosperm, members of other divisions, and two microorganisms.
(12) A 712-base portion of the mitochondrial gene coxI and the corresponding portion of the coxI transcript were amplified by PCR and by RT-PCR, respectively, from the gymnosperm western red cedar.
(13) The duration of meiosis has been estimated in about 70 organisms, including two prokaryotes (yeast and Chlamydomonas) and the following eukaryotes: 1 Basidiomycete (Coprinus lagopus), 2 Gymnosperms (Larix decidua and Thuja plicata gracilis).
(14) This finding throws new light on the taxonomy of the gymnosperms.
(15) The free energy (delta G) analysis of 5S rRNAs from gymnosperms, angiosperms and the other higher plants revealed that the free energy of this ribosomal RNA decreases with evolution.
(16) In addition, one can speculate that an antigen in Cupressus sempervirens is cross-reactive with SBP, the major allergen of Sugi, suggesting that there is a closer relationship between the Taxodiaceae family and the Cupressaceae family than between these two families and the other families of the gymnosperms.
(17) Gel permeation profiles demonstrated significant depolymerization of 14C-sidechain-labeled syringyl lignin, a 14C-sidechain-labeled syringyl-guaiacyl copolymer (angiosperm lignin), and depolymerization of 14C-sidechain- and 14C-ring-labeled guaiacyl lignins (gymnosperm lignin).
(18) The data obtained suggest that the divergence of all the main groups of extant gymnosperms occurred after the branching off of the angiosperm lineage.
(19) cDNAs encoding three different LHC I polypeptides (Type I, Type II and Type III) from the gymnosperm Scots pine (Pinus sylvestris L.) were isolated and sequences.
(20) The only inference may be that the taxon Gnetopsida is an artificial one, and Gnetum and Ephedra belong to quite different lineages of gymnosperms.
Seed
Definition:
(pl. ) of Seed
(n.) A ripened ovule, consisting of an embryo with one or more integuments, or coverings; as, an apple seed; a currant seed. By germination it produces a new plant.
(n.) Any small seedlike fruit, though it may consist of a pericarp, or even a calyx, as well as the seed proper; as, parsnip seed; thistle seed.
(n.) The generative fluid of the male; semen; sperm; -- not used in the plural.
(n.) That from which anything springs; first principle; original; source; as, the seeds of virtue or vice.
(n.) The principle of production.
(n.) Progeny; offspring; children; descendants; as, the seed of Abraham; the seed of David.
(n.) Race; generation; birth.
(v. t.) To sprinkle with seed; to plant seeds in; to sow; as, to seed a field.
(v. t.) To cover thinly with something scattered; to ornament with seedlike decorations.
Example Sentences:
(1) Thus, a dietary 'no observable effect level' for subchronic ingestion of C. obtusifolia seed in rats was less than 0.15%.
(2) Cells (1 x 10(5)) were seeded in 12- x -75-mm tissue culture tubes and incubated with various doses of IL-1 beta, IL-1 alpha, TNF-alpha, and IFN-gamma, alone or in specific combinations, for 15 min, two, 12, 24, and 72 h. PGE concentrations in the media were measured by radio-immunoassay.
(3) Cissus quadrangularis was mutagenic, while 'decoctions' of cumin seeds, aniseeds and ginger were not.
(4) The major protein component in seeds is storage protein.
(5) He fashioned alliances with France in the 1950s, and planted the seeds for Israel’s embryonic electronics and aircraft industries.
(6) Furthermore, the animals did not increase their intake of sunflower seeds, a preferred diet for hamsters.
(7) Although not yet characterized, glycinin-related genes could encode other glycinin subunit families whose members accumulate in minor amounts in seeds.
(8) A procedure for cultivation of the seed material for biosynthesis of eremomycin providing an increase in the antibiotic yield by 24 per cent was developed.
(9) At 10 weeks only the seeded grafts could be assessed because all of the control grafts had occluded.
(10) Cells dissociated from 6-day rat cerebellum were seeded on glass coverslips coated with polylysine on one half and hyaluronectin on the other.
(11) The observed signals from germinating seeds of Phaseolus aures and decaying leaves of Eucalyptus are presented to show that the signals have characteristic kinetics and intensity.
(12) The accumulation of the mRNA corresponding to a rice high pI alpha-amylase gene, OSamy-c, was stimulated 20-fold by exogenous GA3 in half-seeds lacking embryos.
(13) Previous work from this laboratory had shown that Leguminosa seed extracts contain lectin-bound proteins.
(14) We therefore surveyed patients with Parkinson's disease (PD) regarding early adult consumption of fruits and vegetables usually eaten raw, with seeds that are swallowed or scraped with the teeth.
(15) Y-79 cells, seeded into a Matrigel matrix, form round colonies over a 3-week period similar to those of control, weakly metastatic murine melanoma cells.
(16) During the procedure of coronary artery bypass graft surgery (CABG), the release of free oxygen radicals as a result of ischemia and reperfusion which plants the seeds of post-operative low cardiac output and arrhythmias has grave consequence on the reestablishment of cardiac function.
(17) Production of the vaccine basically consists in the multiplication of the working seed under standardized, well-defined conditions guaranteeing consistency of the vaccine lots.
(18) In cereals and legume seeds the activity of chymotrypsin inhibitors is generally lower than that of the trypsin inhibitors.
(19) The amino acid sequence of the smaller subunit of conglutin gamma, the simplest of the three globulins from the seeds of Lupinus angustifolius cv.
(20) Virus in the seed lot was not identified correctly, and the titer of homologous antiserum was mistakenly considered to be low as a result of neutralization tests conducted with the aggregated virus.