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 ?
More complex leaf folding galls may have mechanical tissues (sclerenchyma layer surrounding gall chamber), multiseriate epidermis, and nutritive-like tissues or common storage tissues, as observed for some aphid galls (Alvarez et al., 2009, 2016; Kurzfeld-Zexer et al, 2015).
Anatomic differences of the species Root Pith Sclerenchyma Stem Phloem Leaf Vascular bundles Upper parenchymatic cells Lower epidermis parenchymatic cells Eglandu lar hairs in the stem and leaf Glandul ar hairs in the stem and leaf V.
Similarly, the sclerenchyma girders bordering the palisade mesophyll would reduce water loss from the palisade mesophyll as well as reduce heating of this tissue under high sunlight.
The cultivars Xaraes and Marandu presented higher proportion of sclerenchyma fibers on both sides of the leaf, with greater emphasis on the abaxial face (Figure 3h), while the Massai cultivar presented the lowest results for the quantity of fibers (Table 2), increasing its digestibility, since the condition of higher amount of subepidermic fibers may negatively interfere on the digestibility of the forage by the cattle, due to the lignin in the walls of sclerenchyma cells (Paciullo et al., 2002).
These results may be triggered by decreases in the radial volume of parenchymatous cells, and reductions in the amount of sclerenchyma fibers in sugarcane (Martins & Castro, 1999).
It must be noted, however, that some characters that are typically found in the leaves of Polygonaceae, as ochrea at the base of the petiole, petiole with several vascular bundles, stomata usually present on both surfaces, vascular bundles of the veins accompanied by sclerenchyma, and 2-4 layers of palisade parenchyma (Metcalfe & Chalk, 1957), were not registered in cotyledons and eophylls of R.
It composed of epidermis, aerenchyma, septa, inner cortex with sclerenchyma and parenchymatous cells, and vascular bundle (Figure 17).
Vascular bundles are arranged in one row and were with sclerenchyma at phloem pole only.
Differences in stylet sheath occurrence and the fibrous ring (sclerenchyma) between xCitroncirus plants relatively resistant or susceptible to adults of the Asian citrus psyllid Diaphorina citri (Hemiptera: Liviidae).