Everything about Mixotricha Paradoxa totally explained
Mixotricha paradoxa is a species of
protozoan that lives inside the
termite species
Mastotermes darwiniensis and has multiple
bacterial
symbionts. The name, given by the Australian biologist J.L. Sutherland, who first described
Mixotricha in 1933, means “the paradoxical being with mixed-up hairs”.
Symbiosis
Mixotricha forms many symbiotic relationships. Like its relatives, including
Trichonympha, it lives in the gut of termites and helps them digest
cellulose, a major component of the wood they eat. Without
Mixotricha, its host termites couldn't survive.
Mixotricha forms
mutualistic relationships with bacteria living inside the termite as well. While it has four anterior
flagella,
Mixotricha doesn't use them for locomotion, but more for steering. For locomotion, about 250,000 hairlike
Treponema spirochetes, a species of
helical bacteria, are attached to the cell surface and provide the cell with
cilia-like movements.
Mixotricha also has rod-shaped bacteria in an ordered pattern on the surface of the cell. In addition it has spherical bacteria inside the cell; these
endosymbionts function as
mitochondria, which
Mixotricha lacks. There are a total of four bacterial symbionts.
Genome
According to Margulis and Sagan (2001),
Mixotricha have five
genomes, as they form very close symbiotic relationships with four types of bacteria. They consider
Mixotricha paradoxa the poster organism for
symbiogenesis. Hunt et al. (2001, 2002) also consider it a composite organism with five genomes.
Further Information
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