Endosymbiosis
نویسندگان
چکیده
منابع مشابه
Endosymbiosis
The phenomenon of endosymbiosis, or one organism living within another, has deeply impacted the evolution of life and continues to shape the ecology of countless species. Traditionally, biologists have viewed evolution as a largely bifurcating pattern, reflecting mutations and other changes in existing genetic information and the occasional speciation and divergence of lineages. While lineage b...
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A recent study has revealed a novel feature of the symbiosis between a bacterium and a fungal pathogen. In addition to producing a pathogenic toxin, the endosymbiont of the rice pathogen Rhizopus microsporus controls the ability of the fungus to form sporangia and spores.
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Symbiosis is a term met by beginning biology students well before they reach college. A dictionary definition includes, "the living together in more or less intimate association or even close union of two dissimilar organisms."' There are two classes of symbiotes-ectosymbiotes and endosymbiotes. Ectosymbiosis is a less controversial topic because the partners are fairly easily separable and ide...
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A nested set of bacterial endosymbionts within mealybug cells collectively provides amino acids to their host, but their genomes show that some pathways are distributed between both endosymbionts, while other essential proteins are missing altogether. The possibility that additional functions are shared between partners warrants comparisons with organelles.
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PLoS Biology | http://biology.plosjournals.org Symbiosis, an interdependent relationship between two species, is an important driver of evolutionary novelty and ecological diversity. Microbial symbionts in particular have been major evolutionary catalysts throughout the 4 billion years of life on earth and have largely shaped the evolution of complex organisms. Endosymbiosis is a specifi c type...
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ژورنال
عنوان ژورنال: Current Biology
سال: 2012
ISSN: 0960-9822
DOI: 10.1016/j.cub.2012.06.010