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Lipotubuloids in ovary epidermis of Ornithogalum umbellatum which are a domain of cytoplasm containing a lot of lipid bodies, microtubules and actin filaments, ribosomes, endoplasmic reticulum as well as scarce mitochondria, microbodies, dictyosomes, autolytic vacuoles, exhibit progressive-rotary motion. The immunogold method demonstrated that microtubules and actin filaments of lipotubuloids might...
In the cells of Haemanthus albiflos leaf epidermis there are structures containing lipids analogous to ‘‘elaioplasts’’ (Wakker in Jahrb F Wiss Bot 19:423–496, 1888). Ultrastructural analysis has shown that they are cytoplasmic domains—lipotubuloids, since they exhibit all the features of Ornithogalum umbellatum lipotubuloids. They are composed of numerous lipid bodies surrounded by microtubules, ER...
Root meristem nucleoli from soybean (Glycine max. cv. Aldana) seedlings germinated for 3 days at 25°C and then for 4 days at 10°C or still at 25°C (control) were examined. Chill was observed to reduce root meristematic zone growth 15-fold. Nucleoli doubled their volume at 10°C. Autoradiographic studies showed that after 20 min 3H-uridine incubation at 10°C, incorporation of this precursor (postincubation...
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