منابع مشابه
Some observations on the nucleolus in Spirogyra.
Several species of Spirogyra have been collected and fixed for electron microscopy in either 2 % osmium tetroxide or 5 % glutaraldehyde. Mitotic cells were selected with the light microscope from filaments of Spirogyra embedded in Epon. Evidence is given for an interphase cycle in the nucleolus of Spirogyra. A clear association between nucleolar material and chromosomes occurs at mitosis. The b...
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Effects ef ions on the orientation of cortical microtubu]es (MTs) in spirogyra cells were studied. After depotymerization with amiprophos-methyl (APM), MTs were atlowed to reorganize in NaCl sollltions of yarious concentrations. As the conce"tration of NaCl increased, the frequency of ce]ls that had oblique MTs increased. When ce]ls in NaCl solution vvere transferred into artificia) pond water ...
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result obtained in reaction 3 was a false negative. In the experiments of this study, the RICO was added to the reverse transcription mixture. It is possible to coextract the RICO with the sample RNA to control for the extraction procedure. In this case, however, careful validation is necessary: because of the small size of the RICO, its extraction efficiency might be low or variable depending ...
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Synthesis of a callosic substance during rhizoid differentiation in Spirogyra.
Spirogyra living in running water is anchored to the substratum by rhizoids that form at the ends of the filaments. A new terminal cell differentiates into a rhizoid cell if the filament is injured. The mode of growth changes from diffuse to tip growth when rhizoid differentiation begins. In this study, we found that a callosic substance was synthesized during rhizoid differentiation. Decreasin...
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ژورنال
عنوان ژورنال: Transactions of the Botanical Society of Edinburgh
سال: 1899
ISSN: 0374-6607
DOI: 10.1080/03746609909469087