How To Use Ylem In A Sentence
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Xylem and xylem parenchyma can be recognized in the centre of the taproot surrounded by a ring of meristematic tissue with very high intensity.
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Xylem vessels, the vascular tubes responsible for water transport throughout the plant, are formed by tracheary elements.
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Slide 12: F F F F ก 40x xylem parenchyma epidermis collenchyma chlorenchyma
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Their internal stem structure is characterized by a eustele with endarch protoxylem, where a small amount of manoxylic wood is produced from a bifacial vascular cambium.
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Stained cells corresponding to immature xylem were detected in vascular bundles of flowers and fruits.
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The most obvious manifestation of this is the development of wood, or secondary xylem, from the vascular cambium.
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In addition, the magnitude of growth-associated is similar between xylem and mesophyll and between xylem and epidermis.
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When it shoves its tubelike mouthparts into a plant to suck sap from the xylem, the insect may transmit a deadly plant bacterium, Xylella fastidiosa, in its saliva.
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At low power magnification, entire radial stem sections were imaged and the area stained by the safranin determined relative to the total amount of xylem tissue.
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The other well-known xylem tapping parasites are the mistletoes.
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Once inside the symplast, radial transport across the root to the central stele and, subsequently, unloading into the xylem are necessary for translocation to the shoot.
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Thus, elements of the guard cell's response to stress are present in mesophyll and xylem parenchyma cells.
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Tissues external to the xylem were removed because of the presence of large resin ducts which could release materials that would obstruct water flow through the xylem tracheids.
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The cambium produces phloem tissue to the outside and xylem tissue to the inside.
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On the other hand, leafhoppers and planthoppers, that feed at least half the time on the deeper layer of conductive tissues (called the xylem), get knocked down.
4 What's in a Neem
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Seals were water-tight even at pressures of several bars, but did not interrupt water flow in the xylem.
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With the exception of one possible geopetal structure, the infilling of xylem vessels appears monotextural along their length.
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Materials in liquids can be injected into trees' woody tissues, known as xylem, because the pressure within the xylem is below that of atmospheric pressure on the outside.
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Slide 6: cortex pericycle pith Xylem endodermis epidermis F ก F Fก 10x
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In the xylem, following the application of nitrate, both the exudation rate and the concentration of the cytokinins increased, with ZR being the dominant species in the sap.
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Other barriers may also exist because xylem-mobile safranin failed to enter the ovary although the xylem passes around the nucellus and into the stylar tissue.
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Vessels differentiate immediately beneath the vascular cambium in the late-formed xylem.
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As more water vapor molecules exit the plant, the remaining water molecules tug on each other and will pull an entire column of water throughout the plant body through special tissues called xylem during the process of transpiration.
Transpiration
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In this study, the pectate lyase gene expression was located in the recent products of cambial divisions of both phloem and xylem and conspicuously localized in the xylem parenchyma cells of young vascular bundles.
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In freezing xylem, gas bubbles are formed because air is not soluble in ice.
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This tissue is comprised of two types of specialized cells called xylem and phloem.
Citizendium, the Citizens' Compendium - Recent changes [en]
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High dosage of these messenger RNA molecules lead cells to become metaxylem, whereas low dosage leads to protoxylem.
Innovations-report
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In the latter, phloem is produced outwardly from each of the successive cambia and therefore lies between conjunctive tissue (which is not secondary xylem) and the secondary xylem produced by each of the cambia.
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(interfascicular cambium) a complete ring is formed, and a regular periodical increase in thickness results from it by the development of xylem on the inside and phloem on the outside.
Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1
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In dicots the phloem is a distinct layer separated from the xylem by a thin layer of cambial tissue
5. How plants live and grow
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Shixin 733 plants . The xylem cavitation and embolism were measured by monitoringemission ( AE ) from leaf xylem.
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In multicellular plants fluxes to and from roots via xylem and phloem further complicate the situation.
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Fig. S1A), in the hyd mutants callose accumulates ectopically, and is variably associated with xylem traces showing a lack of coordinated differentiation of the two vascular cell types (Supplementary
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The applied suction pressure caused xylem sap flow into the capillary where it could be collected with a syringe.
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The number of xylem groups is fairly large and the development of the xylem is from the pericycle towards the centre of the stele.
A Handbook of Some South Indian Grasses
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Inside of this zone, undifferentiated xylem cells without secondary walls proliferated through mitotic activity.
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Archaeopteris was a true tree, with a woody trunk, xylem, secondary cambium, and leaves.
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Parenchyma rays occur throughout the xylem and phloem cells.
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The outer ring of the stem contains all the functional tissue, including xylem, cambium, phloem, supporting tissues, and epidermis.
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Small blocks of tissue, including cambium and the adjacent phloem and xylem, were cut with a sharp knife and a chisel from the stem of a single specimen of K. pictus that was growing on the campus of Hokkaido University.
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Formation of phloem and early xylem was directly related to fruitlet size.
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Nevertheless, Canny concluded that vessels embolize and refill while xylem-water pressure is in the range of - 0.2 to - 0.6 MPa.
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Malate alkalizes xylem sap to a greater extent than nitrate.
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The vascular cambium, which is located between the xylem and phloem, functions to segregate the two tissues, and the source of stem cells that will eventually differentiate into one of them.
CreationWiki - Recent changes [en]
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Nutrients are transported from the roots to the leaves inside the veins in the xylem.
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These include Kylemore Abbey, where 150-year-old apple espaliers line the paths of the kitchen garden.
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These layers include the epidermis, an exodermis in roots where it is differentiated, several layers of cortex cells, the endodermis, pericycle, xylem parenchyma cells and finally the vessels.
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Each year a new ring of xylem is added called the annual ring.
Biology Basic Facts
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Slide 7: F ก F Fก 40x pericycle xylem pith phloem endodermis
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The characteristics of the size of pith, the ratio of pith and the ratio of tegument vs. xylem have drastic variation among the three hybrid combinations of Dongzao seedlings.
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Graniferous tracheary elements are restricted to the haustorium and occur most frequently in the plate xylem.
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Chloroplasts were abundant in the secondary cortex and secondary phloem, and occurred throughout the secondary xylem rays and medulla of 3-year-old stems.
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In the forms in which it is most highly developed (Polytrichaceae) this tissue, which is comparable with the xylem of higher plants, is surrounded by a zone of tissue physiologically comparable to phloem, and in the rhizome may be limited by an endodermis.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria"
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Generally, a high recycling from xylem to phloem was observed in the old parts of the shoot.
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High dosage of these messenger RNA molecules lead cells to become metaxylem, whereas low dosage leads to protoxylem.
Innovations-report
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Thus xylem is commercially important as a source of wood and fibres.
Biology Basic Facts
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In areas where there are lower levels of microRNA 165/6, cells turn into metaxylem.
Innovations-report
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Using a combination of molecular and cellular techniques including high-resolution imaging, they discovered a complex sequence of events at the molecular level that creates the distinction between protoxylem and metaxylem cells.
Innovations-report
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Root and stem xylem embolism, stomatal conductance, and leaf turgor in Acer grandidentatum populations along a soil moisture gradient.
Survivorship Bias « Climate Audit
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In the vascular tissue of woody species, parenchyma cells include those in phloem, and the ray cells and axial parenchyma cells in xylem.
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The nectary is supplied by a single vascular bundle comprising xylem and phloem.
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Xylem cavitation was not a research topic in the 1960s, hence there was no reason for Scholander to dwell on this issue.
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Other barriers may also exist because xylem-mobile safranin failed to enter the ovary although the xylem passes around the nucellus and into the stylar tissue.
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However, petrologic ground thin-sections proved to be superior to the peels for showing the fine wall details of xylem parenchyma and tracheary cells.
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Calcium was nearly unaffected and, under potassium limitation, it represented the major cation in xylem sap.
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These layers include the epidermis, an exodermis in roots where it is differentiated, several layers of cortex cells, the endodermis, pericycle, xylem parenchyma cells and finally the vessels.
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The girls visited The Chocolate Factory, The Wax museum and Kylemore indoor karting before lunching in Jury's Hotel.
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The xylem (Fig. 68, _C_, _x_) is made up principally of large empty cells, with pointed ends, whose walls are marked with closely set, narrow, transverse pits, giving them the appearance of little ladders, whence they are called "scalariform," or ladder-shaped markings.
Elements of Structural and Systematic Botany For High Schools and Elementary College Courses
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In each bundle, separating the xylem and phloem, is a layer of meristem or active formative tissue, known as cambium; by the formation of a layer of cambium between the bundles
Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1
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Stained cells corresponding to immature xylem were detected in vascular bundles of flowers and fruits.
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It possessed secondary xylem and secondary phloem, which were produced by a bifacial vascular cambium with ray and fusiform initials.
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Since microRNA 165/6 moves out from its source cells and dissolves their target messenger RNAs, in areas where there are high levels of microRNA 165/6, nearby cells are more likely to become protoxylem.
Innovations-report
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Indeed, it has been noted that tyloses appeared to hinder, but not entirely block, the movement of radiolabelled amino acids in the xylem sap at the ligule of senescent leaves of Lolium temulentum.
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Assuming the conduits as elliptic pipes arranged in parallel, it is possible to calculate the conductivity of the xylem conduit lumina in a stem segment from their cross-sectional dimensions.
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The applied suction pressure caused xylem sap flow into the capillary where it could be collected with a syringe.
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Substantial ectopic callose deposition is found, variably associated with xylem traces; bars = 100 µm.
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The conducting tissues within the vascular bundles are the xylem and phloem.
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At low power magnification, entire radial stem sections were imaged and the area stained by the safranin determined relative to the total amount of xylem tissue.
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Both xylem and phloem form a continuous branched system in the whole plant body.
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Adonis amurensis is perennial herb, Its roots are nearly primary structure in the whole life, Primary Xylems of main root and lateral roots of one year seedling are diarch.
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Lignins occur in great quantity in the secondary cell walls of fibres, xylem vessels and tracheids.
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They suggested that ions would move directly from the pericycle to the xylem vessels, rather than through the internal stele tissues.
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Throughout the growing season, hollow vessels in a tree's sapwood, or xylem, conduct water and nutrients up from the roots to the leaves.
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Merged bright-field and aniline-blue stained UV fluorescence images showing the correspondence between xylem and phloem-associated callose
PLoS ONE Alerts: New Articles
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Before I met Lena, three years ago, I devoted myself entirely to opening young minds onto the mysteries of xylem and phloem.
HOMELAND AND OTHER STORIES
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In Arabidopsis roots, the transition from early to later stages of differentiation is characterized by the appearance of metaxylem, which is identified on the basis of reticulate rather than helical secondary cell wall thickenings.
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Oil droplets penetrated or diffused into plants via both stomata and the cuticle of leaves and stems, and then moved within intercellular spaces and into various cells including phloem and xylem.
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The estimation of the water uptake and water flow in xylem and phloem was outlined by Jiang et al..
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In the case of hemiparasites that rely on solutes from the host transpiration stream, it is clear that a higher conductance of parasite xylem and stomata sustains water flux from the host.
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The researchers conducted the study in the root of Arabidopsis, a small flowering plant related to cabbage, where they took a closer look at the development of two types of root cells - protoxylem and metaxylem.
Innovations-report
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The researchers conducted the study in the root of Arabidopsis, a small flowering plant related to cabbage, where they took a closer look at the development of two types of root cells - protoxylem and metaxylem.
Innovations-report
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In nature, trees use water in tubular tissues, called xylem, like ropes that pull more water out of the ground, delivering it to leaves.
The Open Piehole
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The hydroid tissues, in particular, are the general run of moss water storage cells and are probably only remotely related to the xylem of tracheophytes.
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(AL-jee) Primitive organisms that contain chlorophyll but do not have structures, such as xylem and phloem, to transport fluids.
Algae
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By Sedačky Riva – skloubení stylu a funkce « StyleMag. cz on August 31, 2009 at 1: 23 pm
Cipria Sofas : Disco Style!
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It's the best game in the world, even if everyone hates playing with me cause I use QI and ZA and XI and JO and QATS and XYLEM, all of which are very real words.
Congrats, Scrabble, you ol' dog
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Its xylem conduit develops, gas is rooted much, recovery capability is very strong.
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Pressure in the xylem elements, monitored with a pressure microprobe, changed from the initial pressure at the time of pressure step to the new steady pressure after some time.
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The similar pH response of root exudate and sap collected by shoot pressurization suggests that xylem sap of N-deprived Capsicum plants is indeed more alkaline in vivo.
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Angiosperm root hemiparasites attach to the root system of a host plant and extract xylem sap after gaining contact with xylem vessels.
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In the roots one part may be deposited in the tissue and another part recirculated to the xylem vessels.
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The chemical components in different parts of Radix Fici Hirtae are similar but the contents of volatile component and psoralen are higher in the cortex than those in tile xylem.
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Similarly, in cut chrysanthemum flowers, the leaves often wilt, due to a blockage for water transport in the xylem of the basal stem part.
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When the exposure time was extended to 60 min, a large amount of phosphorus was transported basipetally to the shoot from root sections located 80 mm from the root tip, where the xylem is completely mature.
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Slide 12: F F F F ก 40x xylem parenchyma epidermis collenchyma chlorenchyma
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Sometimes an unusual and distinctive fenestrate texture is preserved when the outer surface of the xylem is exposed.
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Accumulation was found first in the xylem, then in vascular parenchyma and then in the thick-walled sieve elements.
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The xylem is the part of the vascular system that carries water and nutrients from the roots to the leaves.
5. How plants live and grow
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Subsequently, this cambium produces both wound xylem and wound phloem and thus contributes to further thickening.
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Independently, root pressure xylem exudate from detopped stem bases was also collected at the time of harvest.
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Xylem flow carries the transpiration stream and is normally entirely acropetal.
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Once inside the symplast, radial transport across the root to the central stele and, subsequently, unloading into the xylem are necessary for translocation to the shoot.
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The conducting tissues within the vascular bundles are the xylem and phloem.
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Using a combination of molecular and cellular techniques including high-resolution imaging, they discovered a complex sequence of events at the molecular level that creates the distinction between protoxylem and metaxylem cells.
Innovations-report
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Vascular secondary growth results from the activity of the vascular cambium, which produces secondary phloem and secondary xylem.
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Root tissue samples are hereafter referred to as periderm, phloem and xylem.
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In dicot roots the xylem is the tissue at the core (Figure 5.3).
5. How plants live and grow
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In dicot roots the xylem is the tissue at the core (Figure 5.3).
5. How plants live and grow
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The photographs indicate movement of oil from treated leaf surfaces to stems and extensive distribution of oil in the mesophyll, cortex, phloem, xylem, and pith of plant tissues.
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An ordinary epidermal cell; st. stomata; sc. sclerenchyma; ph. phloëm; chl c. chlorenchyma; m. motor cells; xy. xylem.]
A Handbook of Some South Indian Grasses
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To visualize xylem strands, tissues were stained for 5 min with safranin-O (1% w/v in 95% ethanol) and dipped momentarily into 95% ethanol to wash out excess stain, before mounting in 25% (w/v) chloral hydrate.
PLoS ONE Alerts: New Articles
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The bulk of axial water movement through the elongation zone occurs through xylem elements in the midrib and large lateral veins.
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They manipulate the water in the xylem under negative pressure - what's called a metastable liquid state - right on the verge of becoming a vapor.
The Open Piehole
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It should be interesting to find out where in the leaf this barrier is built up: gradually along the mesophyll or abruptly between xylem and mesophyll.
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The bundles contain both xylem and phloem, and are marked by the presence of large canals known as carinal canals, which also function in water conduction.
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In the xylem are a number of vessels (_C_, _tr. _) at once distinguishable from the other cells by their definite form, firm walls, and empty cavity.
Elements of Structural and Systematic Botany For High Schools and Elementary College Courses
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Xylem tissue consists of long continuous tubes formed from columns of cells in which the horizontal cross walls have disintegrated and the cell contents have died
Biology Basic Facts
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In addition, the xylem - because of its lignification, is a stiffer material compared to the living tissues: phloem, collenchyma and parenchyma.
