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- Title
Synthesis of a Callosic Substance during Rhizoid Differentiation in Spirogyra.
- Authors
Shin-ya Yamada; Seiji Sonobe; Teruo Shimmen
- Abstract
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. Decreasing the cell turgor, lowering extracellular Ca2 or adding Gd3 , all inhibited the commencement of rhizoid differentiation as well as synthesis of the callose-like substance at the tip of the terminal cell. A callosic substance was also synthesized during formation of the conjugation tube.
- Subjects
SPIROGYRA; RHIZOIDS; TURGOR; BACTERIAL conjugation
- Publication
Plant & Cell Physiology, 2003, Vol 44, Issue 11, p1225
- ISSN
0032-0781
- Publication type
Academic Journal
- DOI
10.1093/pcp/pcg152