Auxospore
Sign in to savethumb|right|Filament of Aulacoseira, with an auxospore at the end Auxospores are specialised cells in diatoms that are produced at key stages in their cell cycle or life history. Auxospores typically play a role in growth processes, sexual reproduction or dormancy.
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Within Vinony's link graph, Auxospore is referenced by 90 other articles, and connects out to ploidy, Marine microorganism and cell.
It is catalogued under the topic Diatom biology.
Its subject is documented across 7 Wikipedia language editions.
Wikidata facts
- Instance of
- cell type
Show 3 more facts
- Commons category
- Auxospores
- described by source
- Brockhaus and Efron Encyclopedic Dictionary
- found in taxon
- Diatomea
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Encyclopedic overview
3 sectionsContents
- Mechanism
- Structure
- References
thumb|right|Filament of Aulacoseira, with an auxospore at the end Auxospores are specialised cells in diatoms that are produced at key stages in their cell cycle or life history. Auxospores typically play a role in growth processes, sexual reproduction or dormancy.
== Mechanism == Auxospores are involved in re-establishing the normal size in diatoms, as successive mitotic cell divisions leads to a decrease in cell size. This occurs because each daughter cell produced by cell division inherits one of the two valves that make up the frustule (a silica cell wall), and then grows a smaller valve within it. Consequently, each division cycle decreases the average size of diatom cells in a population. When its size becomes too small, a dividing diatom cell produces an auxospore to expand its cell size back to that which is normal for vegetative cells.
Excerpted from Wikipedia’s “Auxospore” article, available under the CC BY-SA 4.0 licence.