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Intracellular Bacterial Symbionts of Aphids Possess Many Genomic Copies per Bacterium (1999)

Komaki, Kanako ; Ishikawa, Hajime

Springer

Journal of molecular evolution 48 (1999), S. 717-722

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ISSN: 1432-1432

Keywords: Key words:Buchnera— Pea aphid — Symbiosis — Genomic copy number — Dot-blot analysis — Microscope photon-counting system — Polyploidy

Source: Springer Online Journal Archives 1860-2000

Topics: Biology

Notes: Abstract. Although Buchnera, the endosymbiotic bacteria of aphids, are close relatives of Escherichia coli, their genome size is only a seventh that of E. coli. In this study, we estimated the genomic copy number of Buchnera by dot-blot hybridization and fluorimetry using a video-intensified microscope photon-counting system and obtained convincing evidence that each cell of these bacteria contains an average of 120 genomic copies. Thus, the Buchnera symbiont, with many copies of a small-sized genome, is reminiscent of cell organelles such as mitochondria and chloroplasts.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/PL00006516

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