Clinorotation Affects the Ultrastructure of Pea Root Mitochondria |
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Authors: | Vasyl Brykov |
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Affiliation: | (1) Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan |
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Abstract: | Effects of clinorotation on the mitochondrial ultrastructure in cells of meristem, distal and central elongation zones of
3- and 5-day-old etiolated roots of pea seedling roots were studied. It was shown that mitochondria in cells of examined root
growth zones revealed a different sensitivity to clinorotation. The ultrastructure of mitochondria in the meristem and central
elongation zone cells did not substantially change in comparison with stationary control. At the same time, changes in the
mitochondrial ultrastructure in cells of the distal elongation zone under clinorotation were observed, namely: decrease in
the size of mitochondria, as well as increase in both matrix electron density and crista volume. Such changes in the mitochondrial
ultrastructure under clinorotation are supposed to display the rearrangements of energy metabolism in cells of the distal
elongation zone in these conditions. |
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Keywords: | |
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