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An endosymbiont or endobiont [1] is an organism that lives within the body or cells of another organism. Typically the two organisms are in a mutualistic relationship. Examples are nitrogen-fixing bacteria (called rhizobia ), which live in the root nodules of legumes , single-cell algae inside reef-building corals , and bacterial endosymbionts ...
As the endosymbiont adapts to the host's lifestyle, the endosymbiont changes dramatically. There is a drastic reduction in its genome size, as many genes are lost during the process of metabolism , and DNA repair and recombination, while important genes participating in the DNA-to-RNA transcription , protein translation and DNA/RNA replication ...
As an endosymbiont evolves into an organelle, most of its genes are transferred to the host cell genome. [24] The host cell and organelle therefore need to develop a transport mechanism that enables the return of the protein products needed by the organelle but now manufactured by the cell.
A symbiosome is formed as a result of a complex and coordinated interaction between the symbiont host and the endosymbiont. [5] At the point of entry into a symbiont host cell, part of the cell's membrane envelops the endosymbiont and breaks off into the cytoplasm as a discrete unit, an organelle-like vacuole called the symbiosome.
The chloroplast is surrounded by 4 membranes: 2 layers resulting from the primary, and 2 resulting from the secondary. When the nucleus of the algal endosymbiont remains, it's called a "nucleomorph". [1] Most tertiary endosymbiosis events end up with only the plastid retained.
An endophyte is an endosymbiont, often a bacterium or fungus, that lives within a plant for at least part of its life cycle without causing apparent disease. Endophytes are ubiquitous and have been found in all species of plants studied to date; however, most of the endophyte/plant relationships are not well understood.
The proto-mitochondrion is the hypothetical ancestral bacterial endosymbiont from which all mitochondria in eukaryotes are thought to descend, after an episode of symbiogenesis which created the aerobic eukaryotes.
Khan Kluay 2 (Thai: ก้านกล้วย ๒; RTGS: Kan Kluai Song) is a 2009 Thai animated dark fantasy and action-adventure film, directed by Taweelap Srivuthivong and released in 2009. It is the sequel to Khan Kluay and follows the further adventures of the war elephant of King Naresuan the Great .