sclerenchyma


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sclerenchyma

a plant tissue in which the cells have greatly thickened walls impregnated with LIGNIN, and no cell contents. The tissue has the mechanical function of supporting the plant, and consists of two types of cells: fibres and SCLEREIDS. fibres are long cells with tapered ends, which are often grouped into bundles.
References in periodicals archive ?
Vascular bundles have sclerenchyma only at phloem pole.
Occasionally, septal spines are very scarce or absent, but the wall presents undulations in the sclerenchyma as septal projections.
1 mm in diameter, with 7 veins; sclerenchyma forming a complete ring with a thickness of 3-4 cells, 2-4 grooves, 1-3 ridges (Figures 1a, 1b, 1c).
a tissue that lies in between the dermal tissues and around the vascular tissues), in this case primarily sclerenchyma, which is composed of thick-walled, usually lignified cells.
Strength, cellulose content and sclerenchyma tissue proportions of eight grasses grown as single plants.
goyazana from other species of the genus based on the stomata; mesophyll; sclerenchyma sheaths shared by mid-vein vascular bundles; the occurrence of idioblasts and raphides; and the presence of starch and tannin in the leaf blade.
A ring of sclerenchyma encircles the xylem and phloem (Figures 1 and 3).
Collateral vascular bundles are surrounded by a parenchyma sheath, unrelated to sclerenchyma (Fig.
It is known that the number of sclerenchyma cells and the cross-sectional area of the central cylinder of needles may be influenced by nutrient deficiency or other stress factors on the foliage of conifers as described by several authors (Sutinen et al.
Results: The mistletoe lectins I--III in internodes were located mainly in cells of the parenchyma of the cortex, in sclerenchyma tissue next to the vascular bundles and in the companion cells of the phloem.
Inner wall of epidermic cells are thin; parenchyma composed of polyhedral cells; collateral bundles with a set of sclerenchyma fibers are located at the periphery, each collateral bundle includes two lateral strands of phloem, a central bundle composed of small strands of phloem surrounded with phloematic fibers, a large vessel of metaxylem, several small vessels of protoxylem and xylematic parenchyma.