Chromista: Difference between revisions
be a bit more specific about the doubts on Chromista |
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* [[Cryptomonad]]s |
* [[Cryptomonad]]s |
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The name Chromista was introduced by [[Thomas Cavalier-Smith|Cavalier-Smith]] in 1981; the earlier names chromophyte and chromobiont correspond to roughly the same group. Molecular trees have had some difficulty resolving relationships between the different groups. |
The name Chromista was introduced by [[Thomas Cavalier-Smith|Cavalier-Smith]] in 1981; the earlier names chromophyte and chromobiont correspond to roughly the same group. Molecular trees have had some difficulty resolving relationships between the different groups. All three may share a common ancestor with the [[alveolate]]s (see [[chromalveolate]]s), but there is evidence that suggests that the haptophytes and cryptomonds do not belong together with the heterokonts.<ref>{{cite journal | author = Burki F, Shalchian-Tabrizi K, Minge M, Skjæveland Å, Nikolaev SI, et al. | year = 2007 | title = Phylogenomics Reshuffles the Eukaryotic Supergroups | journal = PLoS ONE | volume = 2 | issue = 8: e790 | doi = 10.1371/journal.pone.0000790}}</ref><ref>{{cite journal | url = http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1713255 | title = Evaluating Support for the Current Classification of Eukaryotic Diversity | author = Laura Wegener Parfrey, Erika Barbero, Elyse Lasser, Micah Dunthorn, Debashish Bhattacharya, David J Patterson, and Laura A Katz | doi = 10.1371/journal.pgen.0020220 | journal = PLoS Genet. | date = 2006 December | volume = 2 | issue = 12 | pages = e220 }}</ref> |
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== References == |
== References == |
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<references/> |
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* {{cite journal | author = T. Cavalier-Smith |
* {{cite journal | author = T. Cavalier-Smith |
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| title = Eukaryote kingdoms: seven or nine? |
| title = Eukaryote kingdoms: seven or nine? |
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Revision as of 14:53, 17 April 2008
The Chromista are a paraphyletic eukaryotic supergroup, which may be treated as a separate kingdom or included among the Protista. They include all algae whose chloroplasts contain chlorophylls a and c, as well as various colorless forms that are closely related to them. These are surrounded by four membranes, and are believed to have been acquired from some red alga. There are three different groups:
- Heterokonts or stramenopiles - brown algae, diatoms, water moulds, etc.
- Haptophytes
- Cryptomonads
The name Chromista was introduced by Cavalier-Smith in 1981; the earlier names chromophyte and chromobiont correspond to roughly the same group. Molecular trees have had some difficulty resolving relationships between the different groups. All three may share a common ancestor with the alveolates (see chromalveolates), but there is evidence that suggests that the haptophytes and cryptomonds do not belong together with the heterokonts.[1][2]
References
- ^ Burki F, Shalchian-Tabrizi K, Minge M, Skjæveland Å, Nikolaev SI; et al. (2007). "Phylogenomics Reshuffles the Eukaryotic Supergroups". PLoS ONE. 2 (8: e790). doi:10.1371/journal.pone.0000790.
{{cite journal}}: Explicit use of et al. in:|author=(help)CS1 maint: multiple names: authors list (link) CS1 maint: unflagged free DOI (link) - ^ Laura Wegener Parfrey, Erika Barbero, Elyse Lasser, Micah Dunthorn, Debashish Bhattacharya, David J Patterson, and Laura A Katz (2006 December). "Evaluating Support for the Current Classification of Eukaryotic Diversity". PLoS Genet. 2 (12): e220. doi:10.1371/journal.pgen.0020220.
{{cite journal}}: Check date values in:|date=(help)CS1 maint: multiple names: authors list (link) CS1 maint: unflagged free DOI (link)
- T. Cavalier-Smith (1981). "Eukaryote kingdoms: seven or nine?". Biosystems. 14: 461–481.