Kinetoplastea
Sign in to saveKinetoplastida (or Kinetoplastea, as a class) is a group of flagellated protists belonging to the phylum Euglenozoa, and characterised by the presence of a distinctive organelle called the kinetoplast (hence the name), a granule containing a large mass of DNA. The group includes a number of parasites responsible for serious diseases in humans and other animals, as well as various forms found in soil and aquatic environments. The organisms are commonly referred to as "kinetoplastids" or "kinetoplasts".
Species
kinetoplastids
CLASS
- KingdomProtozoa
- PhylumEuglenozoa
- ClassKinetoplastea
Habitatmarine, brackish, freshwater
Kinetoplastida Les Kinétoplastidés (Kinetoplastida) sont des protistes munis de flagelles locomoteurs. Avec les Euglénophytes et les Pseudociliés, les Kinétoplastidés forment le clade des Euglénobiontes. Sommaire 1 Description 2 Taxonomie 2.1 Sous-ordres 2.2 Genres de placement incertain 3 Notes et références 4 Annexes 4.1 Articles connexes 4.2 Liens externes Description Les Kinétoplastidés n'ont qu'une seule mitochondrie très volumineuse qui contient le kinétoplaste formé par de l'ADN (assez abondant, jusqu'à 20 % de l'ADN cellulaire). Le kinétoplaste est en général à la base du flagelle. Taxonomie Sous-classe des Metakinetoplastina ordre des Eubodonida ordre des Neobodonida ordre des Parabodonida ordre des Trypanosomatida Sous-classe des Prokinetoplastina ordre des Prokinetoplastida Sous-ordres Les Kinétoplastidés se divisent en deux sous-ordres : les Trypanosomidés avec une seule flagelle et les bodonidés avec deux flagelles. Certains Bodonidés sont indépendants (exemple : Cephalothanium) et d'autres sont parasites (exemple : Cryptobia.) Les Trypanososidés sont tous parasites et sont transmis par les animaux tels que les moustiques et les sangsues. Les trypanosomes sont notammen
via GBIF
Article
12 sectionsContents
- Taxonomy
- History
- Classification
- Morphology
- Mitochondrion and kinetoplast DNA
- Cytoskeleton
- Flagella
- Life cycle
- Gallery
- References
- Bibliography
- External links
Kinetoplastida (or Kinetoplastea, as a class) is a group of flagellated protists belonging to the phylum Euglenozoa, and characterised by the presence of a distinctive organelle called the kinetoplast (hence the name), a granule containing a large mass of DNA. The group includes a number of parasites responsible for serious diseases in humans and other animals, as well as various forms found in soil and aquatic environments. The organisms are commonly referred to as "kinetoplastids" or "kinetoplasts".
The kinetoplastids were first defined by Bronislaw M. Honigberg in 1963 as the members of the flagellated protozoans. They are traditionally divided into the biflagellate Bodonidae and uniflagellate Trypanosomatidae; the former appears to be paraphyletic to the latter. One family of kinetoplastids, the trypanosomatids, is notable as it includes several genera which are exclusively parasitic. Bodo is a typical genus within kinetoplastida, which also includes various common free-living species which feed on bacteria. Others include Cryptobia and the parasitic Leishmania.