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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 ...
The endosymbiont underwent cell division independently of the host cell, resulting in many "copies" of the endosymbiont within the host cell. ... Wikipedia® is a ...
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.
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 bacterial endosymbiont is inside its body and is surrounded by two cell membranes typical of Gram-negative bacteria, but its cell membrane presents unusual features, such as the presence of phosphatidylcholine, a major membrane lipid (atypical of bacterial membranes), and the highly reduced peptidoglycan layer, which shows reduced or ...
The endosymbiont is a bacterium classified as Pandoraea novymonadis that belongs to Gram-negative rod-shaped β-proteobacteria in the family Burkholderiaceae. Unlike in other symbiont-harbouring trypanosomatids such as Strigonomas culicis , Kentomonas sorsogonicus , and Angomonas deanei , the division of the endosymbiont is not synchronized ...
The physiological mechanisms behind endosymbiont expulsion remain under research but are speculated to involve various means of detachment of zooxanthellae or gastrodermal cells from host corals. [17] During a bleaching event, entire gastrodermal cells containing zooxanthellae may leave the host.
Buchnera aphidicola, a member of the Pseudomonadota and the only species in the genus Buchnera, is the primary endosymbiont of aphids, and has been studied in the pea aphid, Acyrthosiphon pisum. [2] Buchnera is believed to have had a free-living, Gram-negative ancestor similar to a modern Enterobacterales, such as Escherichia coli.