Changes in valve morphology of two pennate diatom species during long-term culture
| Autor: | Michael A. Grachev, Darya P. Petrova, Yulia R. Zakharova, Yelena V. Likhoshway, Yekaterina D. Bedoshvili, Nadejda A. Volokitina |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Morphology (linguistics) QH301-705.5 Range (biology) Zoology Plant Science Diatom cultivation 01 natural sciences 03 medical and health sciences Species identification Biology (General) Valve morphology Ecology Evolution Behavior and Systematics 030304 developmental biology Nature and Landscape Conservation pennate diatoms 0303 health sciences Global and Planetary Change Ecology biology Strain (chemistry) 010604 marine biology & hydrobiology biology.organism_classification Fragilaria Diatom Insect Science Animal Science and Zoology monoclonal culture valve abnormality |
| Zdroj: | Acta Biologica Sibirica 6: 669-678 Acta Biologica Sibirica, Vol 6, Iss, Pp 669-678 (2020) |
| Popis: | The morphology of diatom siliceous is a primary basis for their species identification. This study aims to measure the range of morphological changes induced in the monoclonal cultures of Fragilaria radians strains 280 and A6 and Ulnaria danica strain BK17 by cultivation in the lab for a year or more. The scanning electron microscopy revealed that the number of abnormal valves increases during the first year of culture maintenance. Specific abnormalities observed include curved valves and apices, axial areas and rimoportulae shifted from their normal positions, disordered or otherwise abnormal striae, and various growths on the valves. Similar morphological abnormalities are known to occur in diatoms exposed to microtubule inhibitors. These results show the limits of morphological variance in studied species and could be used to estimate the effect of toxic agents in natural and experimental conditions. |
| Databáze: | OpenAIRE |
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