(1) The initial stage of polarization is axis selection, during which zygotes monitor environment gradients to determine the appropriate direction for rhizoid formation.
(2) Under these conditions, we determined whether sulfation of the fucan is required for its localization in the rhizoid wall.
(3) Structure of cell walls of encysted meiospores, rhizoids, and hyphae differ from one another by the location of amorphous materials and by the arrangement of chitin microfibrils.
(4) The present study deals with patients in whom the diagnostic procedures applied in rhizoid arthrosis were considered to reveal scaphoid-trapezium-trapezoid (STT) arthrosis.
(5) While different developmental stages show minor quantitative changes in chitin, the ratio of galactose to glucose decreases sharply during differentiation of ungerminated cysts into germlings with rhizoids and hyphae.
(6) The germination direction of chloronemal filaments is directly influenced by red light over this whole intensity range, while that of rhizoids tends to be opposite the chloronema.
(7) These features are the presence of hydrogenosomes at all stages of the life cycle, the presence in rhizoids and sporangia of characteristic crystals coated with hexagonal arrays of particles, and in zoospores the presence of distinct surface layers on the motility organelles and cell body respectively, the organization of the ribosomes into helical and globular arrays and the structures associated with the kinetosomes.
(8) In addition to biochemical changes in response to variations in the ratio of availability of various resources (photons, N, P) there are also structural changes; significant here is the increased occurrence of (often colourless) hairs in haptophytes and (probably) of enhanced rhizoid development in rhizophytes.
(9) The ribosomal RNA transport from a nucleus to a perinuclear cytoplasm and its following distribution in the cytoplasm of Acetabularia mediterranea cells were studied using transplantation of RNA-labeled rhizoid into unlabeled stalk.
(10) Exoglucanase, measured with alkali-treated Sigmacell or Avicel, gave low levels of activity in the culture fluid (less than 2 U ml-1) and did not appear to be associated with the fungal rhizoid, as treatment with various solubilizing agents failed to give increased activity.
(11) Previous work indicated that zygotes grown in seawater minus sulfate do not sulfate the preformed fucan (an unsulfated fucoidin) but form rhizoids.
(12) In the rhizoid bulbil cell walls, six different layers could be distinguished, but their occurrence seemed to depend on the fixation, staining and cutting procedures.
(13) The outermost layers of internodal, cortical and rhizoid bulbil cells were composed of randomly orientated fibrils.
(14) Inhibitors could be grouped according to the stage of germination (cyst or rhizoid) at which they blocked development; those effective at the rhizoid stage, could be divided further on the basis of the resultant morphology of the germling.
(15) The ability of P communis to more rapidly degrade maize stem was probably due to the presence of filamentous rhizoids.
(16) The rumen flagellate Sphaeromonas communis showed a significant increase in population density 1 to 2 h after the host sheep commenced feeding, followed by a reduction in numbers to the pre-feeding level after a further 2 to 3 h. The life-history of the organism was shown to consist of a motile flagellate which germinated to produce a vegetative stage comprising a limited rhizoidal system on which up to three reproductive bodies were borne together with (in vitro) other spherical bodies of unknown function; in vivo, the reproductive bodies were stimulated to liberate flagellates by a component of the diet of the host.
(17) Vn does not localize to the rhizoid tip under culture conditions that prevent two-celled embryos from attaching.
(18) In both the rhizoids and the sporangia 'crystal bodies' and hydrogenosomes are present.
(19) If sulfate is added back to cultures of zygotes grown without sulfate, fucoidin is detected at the rhizoid tip by RCA(I)-FITC several hours later.
(20) A sulphated F2 alone is not sufficient for its localization since in the presence of cytochalasin, vesicles containing F2 are not transported to the rhizoid.
Rhizome
Definition:
(n.) A rootstock. See Rootstock.
Example Sentences:
(1) The results showed that the drug "Shan-Dou-Gen" used in different regions in China at present are the roots or rhizomes derived from 9 species: Sophora tonkinensis Gagnep.
(2) Rhizomes of five identified plants of the Paris species, Liliaceae, and Rhizoma Paridis which are sold as a crude drug named "Zao Xiu," "Qiyeyizhihua" or other names in nine different markets in China were tested for their effects on cultured cardiomyocytes.
(3) The effects of 5 pregnane compounds isolated from the rhizomes of Mandevilla illustris were examined against bradykinin (BK), Lysyl-bradykinin (L-BK), acetylcholine (ACh) and oxytocin (Ot)-induced contractions in the isolated uteri of the rat.
(4) The bezoars were composed of vegatable material from either a tuber or rhizome.
(5) The methanol extract from Cnidium rhizome was fractionated with chloroform and water fractions.
(6) Two glucosides to enhance histamine release from rat peritoneal mast cells were isolated from rhizomes of bracken fern (Pteridium aquilinum (L.) Kuhn) by column chromatography on Sephadex LH-20 and droplet counter-current chromatography, and named braxin A1 and A2.
(7) The rhizomes of Curcuma xanthorrhiza Roxb, are used in Indonesian folk medicine as cholagogues, aromatic stomachics, analgesics, a rheumatic remedy, etc.
(8) These data suggested that hoelen or peony root has a luteotropic effect but that atractylodes lanceae rhizome develops luteolysis.
(9) Six new steroidal saponins were isolated from the rhizomes of Smilax sieboldii.
(10) A new diglycoside, named dregeoside, was isolated from the rhizomes of Dregea sinensis var corrugata (Asclepiadaceae).
(11) Picroliv from root and rhizome of Picrorhiza kurroa showed reversal of low density lipoprotein (LDL) binding to paracetamol-induced damaged hepatocytes of rats.
(12) Alcoholic extracts of the rhizomes of Alpinia galanga, Andrographis paniculata, bark of Cinnamomum zeylanicum, rind of Citrus decumana, Desmodium triflorum, seeds of Hydnocarpus wightiana, rhizomes of Kaempfaria galanga, Lippia nodiflora, tender leaves of Morinda citrifolia, rhizomes of Pollia serzogonian, Tephrosia purpuria and rhizomes of Zingiber zerumbeth showed good in vitro anthelmintic activity against human Ascaris lumbricoides.
(13) In this study, we analyzed the effective components of ginger rhizomes.
(14) Glycosides of uncommon aglucones, characterized by the Ph-C5-Ph skeleton, were isolated from the rhizomes of some African Hypoxis species.
(15) The treatment group treated with the sugar-coated tablets of Ginseng-Rhizome saponin (GRS) orally for two months, one tablet (50 mg per tablet), three times a day.
(16) Effects of extract from a herb, Cnidium rhizome (Senkyu), on isolated guinea pig atria were investigated pharmacologically and electrophysiologically.
(17) The rhizomes and roots of Curcuma are commonly used as Traditional Chinese Drugs.
(18) Groups of ewes were gavaged Veratrum californicum root-rhizome material over various 3 day periods during early gestation and their late-term fetuses examined.
(19) Four compounds isolated from the rhizomes of Drynaria propinqua collected in Sichuan have been identified.
(20) Results with Bupleurum kaoi, the species native to Taiwan, showed that the roots, rhizomes and aerial parts (leaves and stem) have greater quantities of saikosaponins than cultivated B. falcatum var.