(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.
Perisperm
Definition:
(n.) The albumen of a seed, especially that portion which is formed outside of the embryo sac.
Example Sentences:
(1) The nutritional value of raw and autoclaved grain amaranth, its milling fractions (perisperm and bran), fat-free flour, and of popped amaranth was evaluated for growing chickens.
(2) Test diets contained about the same AME and CP levels, and the following levels of the test samples: whole grain amaranth flour, 61.46%; fat-free flour, 62.10%; perisperm, 49.50%; bran, 35.30%; and popped amaranth, 61.10%.
(3) Autoclaved grain amaranth and its perisperm fraction replaced corn in the diets of growing chickens with similar performance results.