Diatom - Wikipedia
A defining characteristic of all diatoms is their restrictive and bipartite silica cell wall that causes them to progressively shrink during asexual cell division. At a critically small cell size and under certain conditions, auxosporulation restitutes cell size and prevents clonal death.
Diatom | Description, Characteristics, & Reproduction | Britannica
2024年10月11日 · diatom, (class Bacillariophyceae), any member of the algal class Bacillariophyceae (division Chromophyta), with about 16,000 species found in sediments or attached to solid substances in all the waters of Earth.
Diatom - Definition, Reproduction and Location - Biology Dictionary
2018年1月21日 · Diatoms (pictured below) are a common type of unicellular phytoplankton that likely originated around the Jurassic period. Diatoms can form colonies characterized by particular shapes (e.g., stars, fans, and ribbons) and are encapsulated by a unique cell wall composed of silica, termed a frustule.
Diatom morphology and adaptation: Current progress and …
2022年3月1日 · Diatoms are characterized by their unique silicified cell walls (i.e., frustules) that are made of nanometer-sized particles of SiO 2 deposited in diverse, regular geometric patterns.
Structural evidence for extracellular silica formation by diatoms …
2021年7月30日 · The silica cell wall of diatoms, a widespread group of unicellular microalgae, is an exquisite example for the ability of organisms to finely sculpt minerals under strict biological control.
Cellular Hallmarks and Regulation of the Diatom Cell Cycle
This chapter reviews the structural events occurring during each cell cycle stage, focusing on organelle division, the unique mitotic spindle of diatoms, and the different steps of mitosis. The conservation of the core cell cycle components in diatom genomes is briefly explored.
Intracellular morphogenesis of diatom silica is guided by local ...
2024年9月10日 · Silica cell-wall formation in diatoms is a showcase for the ability of organisms to control inorganic mineralization. The process of silicification by these unicellular algae is tightly...
The mysteries of the diatoms: Current Biology - Cell Press
2012年8月7日 · Diatoms — single-celled algae typically enshrined in a cell wall made of intricately laced silica — have fascinated researchers with a whole range of mysteries, from their evolutionary origins through to their morphogenesis and reproduction.
Exocytosis of the silicified cell wall of diatoms involves ... - Nature
2023年1月30日 · Diatoms are unicellular algae characterized by silica cell walls. These silica elements are known to be formed intracellularly in membrane-bound silica deposition vesicles and exocytosed after...
What are Diatoms? - Diatoms of North America
Diatoms are single-celled algae. Diatoms are algae that live in houses made of glass. They are the only organism on the planet with cell walls composed of transparent, opaline silica. Diatom cell walls are ornamented by intricate and striking patterns of silica.