File:Stramenopiles_diversity.png · Wikimedia Commons · See Wikimedia Commons
heterokont
Sign in to saveAlso known as Stramenopile, Heterokontophyta, Stramenopiles
The stramenopiles, also called heterokonts, are protists distinguished by the presence of stiff tripartite external hairs. In most species, the hairs are attached to flagella, in some they are attached to other areas of the cell surface, and in some they have been secondarily lost (in which case relatedness to stramenopile ancestors is evident from other shared cytological features or from genetic similarity). Stramenopiles represent one of the three major clades in the SAR supergroup, along with Alveolata and Rhizaria.
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- Pacific rockweed, Olympic National Park, USA.jpg
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- Commons category
- Stramenopiles
- taxon name
- Stramenopiles
- taxon common name
- 中空小毛生物
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via Wikidata · CC0
~11 min read
Article
12 sectionsContents
- Nomenclature
- The heterokont problem
- Characteristics
- Plastids
- Ecology
- Evolution
- External
- Internal
- Classification
- Notes
- References
- External links
The stramenopiles, also called heterokonts, are protists distinguished by the presence of stiff tripartite external hairs. In most species, the hairs are attached to flagella, in some they are attached to other areas of the cell surface, and in some they have been secondarily lost (in which case relatedness to stramenopile ancestors is evident from other shared cytological features or from genetic similarity). Stramenopiles represent one of the three major clades in the SAR supergroup, along with Alveolata and Rhizaria.
Stramenopiles are eukaryotes; most are single-celled, but some are multicellular including some large seaweeds, the brown algae. The group includes a variety of algal protists, heterotrophic flagellates, opalines and closely related proteromonad flagellates (all endobionts in other organisms); the actinophryid Heliozoa, and oomycetes. The tripartite hairs characteristic of the group have been lost in some of the included taxa – for example in most diatoms.