idioblast


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idioblast

a cell distinct from others in the same tissue.
References in periodicals archive ?
On stipule sections was possible to observe idioblasts with raphides bundles (fig.
Distribution of calcium oxalate crystal idioblasts in corms of taro (Colocasia esculenta).
Idioblasts with raphids and lipidic droplets are interspersed to the cells of cortical parenchyma (Fig.
Diversity and distribution of idioblasts producing calcium oxalate crystals in Dieffenbachia seguine (Araceae).
The authors conclude that in dry environments, the canopy contains numerous layers of thick cells, whereas in humid environments, the canopy presents fewer layers of cells, and the exodermis shows higher numbers of idioblasts in plants treated with at least 50% urea (Figure 2B).
2002), also showed druses placed in special idioblasts or in lumen of chlorenchymatic cells.
Sections of leaves from plants cultivated in the greenhouse showed the layer of palisade cells well-organized and some of these cells underwent periclinal division; well-developed cuticle; presence of idioblasts containing crystals (Figure 3).
Five shapes of minor vascular bundles are found: arrosetate (78), round in outline (79), elliptical (80), ovoid (81), or mixed round in outline and elliptical (82); idioblasts with rachids are present or absent (83).
The mesocarp consists of three tissue regions: the outer parenchymatous mesocarp with druse idioblasts; the middle mesocarp with elongated and thin-walled cells; and the inner mesocarp (originated from middle meristem) with palisade-like cells.
Bischoff describes the unique way in which the toxin in these plants works: "These plants contain pointy crystals called raphides in packets within the cells called idioblasts. They are sort of spring-loaded so that, when the animal bites down, the raphides are released into the oral cavity, where they penetrate the mucous membranes.