Archaeplastida
| Archaeplastida | ||||||||
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| Systematics | ||||||||
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| Scientific name | ||||||||
| Archaeplastida | ||||||||
| Adl et al., 2005 |
The Archaeplastida are a taxon that is placed as a super-group to the Diaphoretickes , a clade of the eukaryotes (organisms with a cell nucleus ). They include the Glaucophyta , the Rhodophyceae ( red algae ) and the Chloroplastida with the Embryophyta (land plants).
features
The archaeplastida have photosynthetically active plastids with chlorophyll a as the main pigment. The plastids come from a primary endosymbiosis with a cyanobacterium . In some groups the plastids may be lost or reduced as a secondary cause. They usually have a cell wall made of cellulose . The cristae of the mitochondria are flat. Starch serves as a storage carbohydrate .
Systematics
The group was described in 2005 by a group around Sina Adl . The Archaeplastida are the sister taxon of the Sar , together with it they form the Diaphoretickes . The archaeplastida are divided into three groups:
- Glaucophyta
- Red algae (Rhodophyceae)
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Chloroplastida , most important group here:
- Embryophyta (land plants)
In 2019 a fourth base group was discovered - the Rhodelphidia . Both described species are unicellular, flagellated predators that have lost the ability to photosynthesize .
proof
- ↑ a b c Adl, SM, Simpson, AGB, Lane, CE, Lukeš, J., Bass, D., Bowser, SS, Brown, MW, Burki, F., Dunthorn, M., Hampl, V., Heiss , A., Hoppenrath, M., Lara, E., le Gall, L., Lynn, DH, McManus, H., Mitchell, EAD, Mozley-Stanridge, SE, Parfrey, LW, Pawlowski, J., Rueckert, S., Shadwick, L., Schoch, CL, Smirnov, A. and Spiegel, FW: The Revised Classification of Eukaryotes. Journal of Eukaryotic Microbiology , 59: 429-514, 2012, PDF Online
- ↑ Ryan MR Gawryluk, Denis V. Tikhonenkov, Elisabeth Hehenberger, Filip Husnik, Alexander P. Mylnikov, Patrick J. Keeling: Non-photosynthetic predators are sister to red algae . Nature 572 (7768): 240-243 (2019); doi: 10.1038 / s41586-019-1398-6 ; PMID 31316212
