What's the difference between helenium and sneezeweed?
Helenium
Definition:
Example Sentences:
(1) The results of the observation of EPG variation were as follows: Suppression effects of egg-laying capacity from the rabbits administered Prunus mume and Inula helenium were greatest.
(2) Patch tests were negative for another 30 plants, including cocklebur (Xanthium strumarium), dog fennel (Anthemis cotula, fleabane (Erigeron strigosus), sneezeweed (Helenium autumnale), and feverfew (Tanacetum parthenium).
(3) The toxic plant sesquiterpene lactones, helenalin, hymenoxon, mexicanin-E, tenulin, dihydrogriesenin, and psilotropin which were isolated from Helenium, Hymenoxys, and Geigeria spp markedly inhibited "state 3" respiration in mouse hepatic mitochondria.
(4) The coat protein open reading frame (ORF) sequence of Helenium virus S (HelVS) was cloned and expressed in E. coli, rabbit reticulocyte and transgenic tobacco.
(5) The haptens studied were alantolactone and isoalantolactone, two moderate allergens from Inula helenium L., a decorative and medicinal plant.
(6) Studies with smallhead sneezeweed (Helenium microcephalum DC) indicated that a sesquiterpene lactone, helenalin, is the only significant toxic constituent present.
(7) We investigated the mechanisms of the direct positive inotropic effect (PIE) of helenalin, a sesquiterpene lactone isolated from the plant genus Helenium of the family Compositae in guinea pig ventricular myocardium.
(8) Practise the "Chelsea chop" (so called because it is done around Flower Show time, the end of May), according to how much growth has developed, cutting back by half herbaceous plants such as the taller sedums, asters, phlox, heleniums and chrysanthemums to reduce transpiration and encourage them to make bushier plants that won't need staking.
(9) The recover rates of the worms from experimentally infected rabbits administered with the extracts of I. helenium and S. lappa for 30 days, beginning at the 3rd day of inoculation, were as low as 2% and 2.8%, respectively.
(10) The acute toxicity of helenalin, a sesquiterpene lactone isolated from Helenium microcephalum, was examined in male BDF1 mice.
(11) The known compound isohelenalin (1) was isolated from Helenium microcephalum and the previously reported structure confirmed on the basis of physicochemical data and chemical transformation.
(12) The results demonstrate that Cnicus benedictus (blessed thistle), Chrysanthemum leucanthemum (marguerite, ox-eye daisy) and Helianthus debilis (dwarf sunflower) are strong sensitizers while Helenium amarum (bitterweed), Gaillardia amblyodon (blanket flower), Artemisia ludoviciana (prairie sage), Ambrosia trifida (giant ragweed) and Solidago virgaurea (goldenrod) are medium sensitizers.
(13) Hymenoxon and helenalin are toxic sesquiterpene lactones present in the toxic range plants Hymenoxys odorata and Helenium microcephalum.
(14) The sequence of 1390 nucleotides of the 3'-terminal region of Helenium virus S RNA was determined from cloned cDNA.
(15) Those of Inula helenium and Saussurea lappa, however, disclosed regressive and progressive changes as degeneration, atrophy, necrosis, dilatation, etc.
(16) Blocks of homology were evident upstream from the 25 K ORFs of potato virus S (PVS), potato virus M (PVM) and lily symptomless virus (LSV), and upstream from the coat protein initiation codons of PVS, PVM, LSV, carnation latent virus and Helenium virus S. These blocks, which correspond to the 5'-terminal regions of the subgenomic RNAs, were shown to contain potential ribosome recognition sequences.
Sneezeweed
Definition:
(n.) A yellow-flowered composite plant (Helenium autumnale) the odor of which is said to cause sneezing.
Example Sentences:
(1) Patch tests were negative for another 30 plants, including cocklebur (Xanthium strumarium), dog fennel (Anthemis cotula, fleabane (Erigeron strigosus), sneezeweed (Helenium autumnale), and feverfew (Tanacetum parthenium).
(2) Emaciation and temporary illness from sneezeweeds, bitterweed, locoweed, larkspur, lupines, and others may interfere with mating.
(3) Studies with smallhead sneezeweed (Helenium microcephalum DC) indicated that a sesquiterpene lactone, helenalin, is the only significant toxic constituent present.