Related Experiment Video
Updated: Aug 11, 2026

Microscopy of Fission Yeast Sexual Lifecycle
Published on: March 9, 2016
Free, conjugated and bound polyamines during the cell cycle in synchronized cultures of Scenedesmus obliquus
1Department of Biology, University of Crete, Iraklion, Greece.
Abstract:
The levels of free, conjugated and bound polyamines (PA) were analyzed during the cell cycle of the synchronized unicellular green alga Scenedesmus obliquus. The polyamines putrescine (PUT) and spermidine (SPD) in their free and conjugated forms accumulated per cell to a maximum in the cell cycle at about the 16th hour after onset of illumination. The polyamines bound to macromolecules and membrane systems showed an additional peak around the 8-10th hour of the cell cycle. The possible role of the different forms of polyamines in DNA replication, mitosis, cell division and development of the photosynthetic apparatus is discussed.
Related Concept Videos
Positive Regulator Molecules
Positive Regulator Molecules
Meiosis II
The timing and cell division patterns of meiosis differ between males and females. In male meiosis, the centrosomes are part of the formation of the meiotic spindle. However, in oocytes, including that of humans, Drosophila,...

