Ultrastructure of cortical cells of maize root under water stress conditions |
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Authors: | Milada Čiamporová |
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Institution: | (1) Institute of Experimental Biology and Ecology, Slovak Academy of Sciences, Dúbravská cesta 26, 88S 34 Bratislava, Czechoslovakia |
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Abstract: | Following moderate water stress in the cortical cells of theZea mays primary roots, the condensation of the nuclear chromatin, a higher density of free ribosomes and a reduction of polyribosomes,
the reduction of mitochondrial cristae, elongation of ER elements, less compact dictyosomes and inhibited production of the
Golgi vesicles were observed. Severe water stress would cause more severe structural damage in the cortical cells. The more
differentiated cortical cells showed more expressive ultrastructural damage when compared with the meristematic nonvacuolated
cells. Similarly, the cells of the peripheral layers of the cortex suffered more from water deficit than the cells of the
layers situated closer to the central cylinder. |
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Keywords: | |
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