(n.) A tree or shrub bearing cones; one of the order Coniferae, which includes the pine, cypress, and (according to some) the yew.
Example Sentences:
(1) Words included in this title include mistletoe, gerbil, acorn, goldfish, guinea pig, dandelion, starling, fern, willow, conifer, heather, buttercup, sycamore, holly, ivy, and conker.
(2) In our dog days this was a favoured spot, a conifer plantation where he could do no harm, a springy floored place without seasons where a wee up a tree was all he could leave behind.
(3) Differences in the rDNA content in Picea could contribute to the variation, in overall genome size, that has been observed within conifer species.
(4) Deciduous trees and conifers react differently to increased atmospheric CO2.
(5) The pollen grains of conifers are very weak allergens; their structure and function are different from those of the remaining flowering plants.
(6) The ability to grow in liquid media with D-xylose, xylan from decidous trees, and hemicelluloses from conifers was tested in 95 strains of 35 genera of yeasts and yeast-like organisms.
(7) With regard to an early diagnosis of defects within the photosynthetic system of conifers by air pollutants, we measured the chlorophyll fluorescence from microscopic parts of individual pine and spruce needles.
(8) The presence of the gidA gene on the chloroplast genomes of conifers may therefore be of significance with respect to the ability of these plants to synthesize chlorophyll in the dark.
(9) Similarities in linkage relationships among Scots pine, other pines, and other species within the Pinaceae support karyological research that suggests extensive conservation of the conifer genome.
(10) According to Weir, five conifer species account for 88% of all England’s softwood forests and five broadleaf species make up over 72% of its hardwood woodlands.
(11) Small numbers are present in algae, ferns, conifers, sponges, echinoderms, other marine animals, and arthropods.
(12) Conifers face axe to save British woodland Read more At the far side of the wood, spindly black-tipped ash seedlings began to appear, growing at the side of the path.
(13) Only the conifers were, as a group, unlikely to harbor INA bacteria.
(14) Dispersion of repetitive DNA by transposition, coupled with loss of the large inverted repeat, appears to have predisposed conifer cpDNA to a number of inversions.
(15) The size and number of aerial spray drops impinging on spruce budworm in its conifer forest habitat were determined by means of a new tracer method that uses fluorescent particles in a liquid spray.
(16) The evergreen Churchill Arms on Kensington Church Street becomes one enormous conifer each December.
(17) But the planting of new woods on open land, and conversion of broadleaf woodlands to conifers, has been a trend in Britain since Victorian times.
(18) • Felsham Road, Bradfield St George, Bury St Edmund's goodrobert Chopwell Wood, Rowlands Gill, Tyne and Wear Chopwell Wood is a conifer and mixed broadleaf wood.
(19) Much of the landscape is to be radically altered over the next 100 years as the Forestry Commission fells tens of millions of conifer trees to stimulate the growth of ash, beech, oak, hazel, field maple and other native broadleaved species.
(20) Higson’s first task in solving MK’s landscaping problem was “practical, rather ordinary gardening things”: planting semi-mature trees and fast-growing conifers to provide quick cover.
Gymnosperm
Definition:
(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.