(n.) A plant which has its seeds inclosed in a pericarp.
Example Sentences:
(1) One of the cDNA clones (PS3) had a full-length open reading frame of 465 bp corresponding to 154 amino acid residues and showed approximately 85% homology with the amino acid sequences of angiosperm cytosolic SOD counterparts.
(2) In contrast, we observed no cross-hybridization of a probe of chlL to DNA samples from representative angiosperms that require light for chlorophyll synthesis, in support of our conclusion that chlL is involved in light-independent chlorophyll biosynthesis.
(3) Isozymes of CuZn-superoxide dismutase (SOD) were purified from angiosperms (spinach and rice), fern (horsetail) and green alga (Spirogyra).
(4) Angiosperm mitochondria share specific signatures with the alpha subdivision of rhodobacteria.
(5) Several aspects of DNA transfer were similar to those previously observed in angiosperms transformed by A. tumefaciens.
(6) Rates of activity in the intertidal sediments are insufficient to account for the high productivity of marine angiosperms found in the marsh.
(7) Glycine max (soybean) is one angiosperm which lends itself to the study of somatic crossing over.
(8) The cab-6 gene is expressed in dark-grown seedlings at a very high level, differing from angiosperm cab genes which are induced by light.
(9) 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.
(10) 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.
(11) Amino acid sequence comparison reveals that this protein shows a high similarity to seed storage proteins in different angiosperm species in spite of the fact that the common ancestor of ferns and angiosperms lived more than 300 million years ago.
(12) The frequency of occurrence of species recorded on this marine angiosperm, was high, indicating that they play a major role in the biological degradation of the sea grass Posidonia oceanica.
(13) 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.
(14) It was concluded that neither macromolecule alone was likely to yield a solution to the problem of angiosperm phylogeny and therefore that studies of both, at least, will be required.
(15) The gene (cab-6) contains an intron at a position equivalent to the type II cab genes of angiosperms.
(16) Using cytophotometric method, after staining preparations with gallocyanin RNA content was examined in nucleus, nucleolus and cytoplasm of six species of angiospermal plants in successive (1-7 mm) segments of root representing successive zones of differentiation.
(17) 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.
(18) The deduced amino acid sequence predicts a 448 amino acid (50 kDa) polypeptide with 28-38% identity with angiosperm vicilin-like 7S globulins.
(19) Unlike the wide variation in intron position among animal actin genes, the potato actin genes have three introns situated in the same positions as reported for all other angiosperm actin genes.
(20) Relationships between the amino acid sequences of RPS14s encoded in broad bean mtDNA, in chloroplast DNAs of various angiosperms, and in E. coli are consistent with the view that the ancestral lines of these three kinds of DNA diverged from each other within a relatively short time period.
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.