(n.) That portion of fibrovascular bundles which corresponds to the inner bark; the liber tissue; -- distinguished from xylem.
Example Sentences:
(1) A computer model predicts that SA should move rapidly in phloem.
(2) Pinwheel inclusions (PWs) were found in cells of callus tissue derived from explants of secondary phloem parenchyma of carrot (Daucus carota) storage root and grown on a basal medium containing zeatin and indoleacetic acid or coconut milk, naphthalene acetic acid, or combinations of these.
(3) Pumpkin phloem exudate contains two abundant phloem proteins: PP1 is a 96-kD protein that forms polymeric filaments in vivo, and PP2 is a 48-kD dimeric lectin.
(4) The labelled ethephon is translocated in a higher concentration in the phloem after foliar dissepiment application.
(5) When the CoYMV promoter is used to drive expression of the beta-glucuronidase reporter gene in stably transformed tobacco plants, beta-glucuronidase activity occurs primarily in the phloem, the phloem-associated cells, and the axial parenchyma of roots, stems, leaves, and flowers.
(6) Virus particles were present in all cell types of the epidermis, mesophyll, phloem, and xylem.
(7) Polyclonal antibodies raised against pumpkin phloem exudate were used to isolate several cDNAs corresponding to PP1 and PP2.
(8) For both cultivars, the phloem, mesophyll, parenchyma and epidermis were the most susceptible tissues to bacterial attack.
(9) The occurrence of annulate lamellae (AL) in differentiating phloem of Sonchus oleraceus (Compositae) singly infected with sowthistle yellow vein virus (SYVV) and doubly infected with a combination of SYVV and beet yellow stunt virus is documented by electron microscopy.
(10) BYDV, a phloem restricted luteovirus, occurs in very low concentration in grasses.
(11) Ultrastructural examination of leaf tissue of Nicotiana benthamiana infected with Indian cassava mosaic virus (ICMV) revealed abnormalities in phloem and, occasionally, xylem cells.
(12) The possibility of a symplastic pathway of solute movement from the phloem to the syncytium is suggested.
(13) Sieve cells and sieve tube members can be macerated from the phloem of various organs of woody and herbaceous species by autoclaving the tissue in a mild macerating medium.
(14) In transgenic tobacco the GS3A promoter directed GUS expression in the phloem cells of the vasculature in leaves, stems and roots.
(15) Light and electron microscopical observations of the cells of the phloem of Cucurbita maxima have shown that two distinct types of P-protein bodies are formed: a larger type which arises as fine fibrils and a smaller type which apparently arises as groups of tubules.
(16) A biochemical and cytochemical study has been made of the distribution of ATPase in mature and differentiating phloem cells of Nicotiana tabacum and of the substrate specificity and effects of fixation on enzyme activity.
(17) We report here that a soybean 62-kD sucrose binding protein is associated with the plasma membrane of several cell types engaged in sucrose transport, including the mesophyll cells of young sink leaves, the companion cells of mature phloem, and the cells of the developing cotyledons.
(18) It also adhered, though in much smaller numbers, to the uncut surfaces of mesophyll, epidermal, and phloem cell walls.
(19) With the exception of the phloem and the crown of the parenchyma, which borders the medullary lacuna, the walls of the tissues of both treated and untreated straw were lignified.
(20) The content of the vitamins in the phloem depends on the quantity of the yeast organisms in it.
Vascular
Definition:
(a.) Consisting of, or containing, vessels as an essential part of a structure; full of vessels; specifically (Bot.), pertaining to, or containing, special ducts, or tubes, for the circulation of sap.
(a.) Operating by means of, or made up of an arrangement of, vessels; as, the vascular system in animals, including the arteries, veins, capillaries, lacteals, etc.
(a.) Of or pertaining to the vessels of animal and vegetable bodies; as, the vascular functions.
(a.) Of or pertaining to the higher division of plants, that is, the phaenogamous plants, all of which are vascular, in distinction from the cryptogams, which to a large extent are cellular only.
Example Sentences:
(1) Using mini-pigs with an indwelling vascular catheter, the pharmacokinetics of chloramphenicol were investigated in healthy and liver-damaged animals.
(2) The vascular endothelium is capable of regulating tissue perfusion by the release of endothelium-derived relaxing factor to modulate vasomotor tone of the resistance vasculature.
(3) Peripheral vascular surgery has become an increasingly common mode of treatment in non-university, community hospitals in Sweden during the last decade.
(4) This study compared the non-invasive vascular profiles, coagulation tests, and rheological profiles of 46 consecutive cases of low-tension glaucoma with 69 similarly unselected cases of high-tension glaucoma and 47 age-matched controls.
(5) Thus adrenaline, via pre- and post-junctional adrenoceptors, may contribute to enhanced vascular smooth muscle contraction, which most likely is sensitized by the elevated intracellular calcium concentration.
(6) The present study examined whether the lack of chronic hemodynamic effects of ANP in control rats was due to changes in vascular reactivity to the peptide.
(7) Radioligand binding studies revealed the presence of a single class of high-affinity (Kd = 2-6 X 10(-10) M) binding sites for ET-1 in both cells, although the maximal binding capacity of cardiac receptor was about 6- to 12-fold greater than that of vascular receptor.
(8) After vascular injury, smooth muscle cells proliferate, reaching a maximum rate at day 2.
(9) Hexamethonium abolished vasodilatation in the hindquarters vascular bed only.
(10) The fibrous matrix and cartilage formed within the nonunion site transformed to osteoid and bone with increased vascularity.
(11) The operative arteriograms confirmed vascular occlusive phenomenon.
(12) An inverse relationship between the pumping capacity of the heart and vascular resistance was confirmed at different stages of examination and treatment of the patients.
(13) The capillary-adipocyte distances were shorter and the vascularization density was higher in old rats.
(14) When nifedipine was combined with ouabain the elevation of vascular resistance was completely abolished.
(15) A retrospective review was undertaken of 127 lower extremity fasciotomies performed for compartment syndrome after acute ischemia and revascularization in 73 patients with vascular trauma and 49 patients with arterial occlusive disease.
(16) It inhibits platelet and vascular smooth muscle activation by cGMP-dependent attenuation of the agonist-induced rise of intracellular free Ca2+.
(17) Base-line HPV was determined by measuring the change in pulmonary vascular resistance (PVR) while sheep breathed 12% O2 for 7 min.
(18) The chick chorioallantoic membrane (CAM) model was used to study vascular effects of photodynamic therapy (PDT) and hyperthermia (HPT) and the synergism of these modalities.
(19) For obstruction of greater than or equal to 50% of the pulmonary vascular cross-sectional area and pulmonary hypertension thrombolytic therapy should be given and insertion of an inferior caval filter can be considered.
(20) It is concluded that a Na-H antiport system in vascular smooth muscle regulates Na influx rate, contributes to intracellular pH regulation and influences basal levels of Na,K-pump activity.