Asymmetric cell division and its role in cell fate determination in the green alga Tetraselmis indica
Autor: | Ehsan Mesbahi, Jane Delany, Arga Chandrashekar Anil, Karl Burgess, Mani Arora |
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Rok vydání: | 2015 |
Předmět: |
education.field_of_study
biology Trebouxiophyceae Ulvophyceae Asymmetric Cell Division Prasinophyceae Population Temperature General Medicine Chlorophyta biology.organism_classification General Biochemistry Genetics and Molecular Biology Microscopy Electron Transmission Algae Stress Physiological Botany Green algae Tetraselmis General Agricultural and Biological Sciences education |
Zdroj: | Journal of Biosciences. 40:921-927 |
ISSN: | 0973-7138 0250-5991 |
Popis: | The prasinophytes (early diverging Chlorophyta), consisting of simple unicellular green algae, occupy a critical position at the base of the green algal tree of life, with some of its representatives viewed as the cell form most similar to the first green alga, the 'ancestral green flagellate'. Relatively large-celled unicellular eukaryotic phytoflagellates (such as Tetraselmis and Scherffelia), traditionally placed in Prasinophyceae but now considered as members of Chlorodendrophyceae (core Chlorophyta), have retained some primitive characteristics of prasinophytes. These organisms share several ultrastructural features with the other core chlorophytes (Trebouxiophyceae, Ulvophyceae and Chlorophyceae). However, the role of Chlorodendrophycean algae as the evolutionary link between cellular individuality and cellular cooperation has been largely unstudied. Here, we show that clonal populations of a unicellular chlorophyte, Tetraselmis indica, consist of morphologically and ultrastructurally variant cells which arise through asymmetric cell division. These cells also differ in their physiological properties. The structural and physiological differences in the clonal cell population correlate to a certain extent with the longevity and function of cells. |
Databáze: | OpenAIRE |
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