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Weak correlation of starch and volume in synchronized photosynthetic cells
- Publication Year :
- 2015
-
Abstract
- In cultures of unicellular algae, features of single cells, such as cellular volume and starch content, are thought to be the result of carefully balanced growth and division processes. Single-cell analyses of synchronized photoautotrophic cultures of the unicellular alga Chlamydomonas reinhardtii reveal, however, that the cellular volume and starch content are only weakly correlated. Likewise, other cell parameters, e.g., the chlorophyll content per cell, are only weakly correlated with cell size. We derive the cell size distributions at the beginning of each synchronization cycle considering growth, timing of cell division and daughter cell release, and the uneven division of cell volume. Furthermore, we investigate the link between cell volume growth and starch accumulation. This work presents evidence that, under the experimental conditions of light-dark synchronized cultures, the weak correlation between both cell features is a result of a cumulative process rather than due to asymmetric partition of biomolecules during cell division. This cumulative process necessarily limits cellular similarities within a synchronized cell population.
- Subjects :
- education.field_of_study
Cell division
biology
Starch
Cell
Population
Chlamydomonas reinhardtii
biology.organism_classification
Photosynthesis
chemistry.chemical_compound
medicine.anatomical_structure
Single-cell analysis
Algae
chemistry
medicine
Biophysics
Institut für Chemie
Single-Cell Analysis
education
Cell Division
Cell Size
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....4d0b2acaa95095e0f35b033fd27cfd1b