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News Release 09-005
Modeling Genomic Erosion
Scientists sequence the genomes of symbiotic bacteria to study the process of genome reduction
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![Photo of a pink clone of A. pisum (pea aphid), with different stages, growing on fava bean.](/news/mmg/media/images/genome_erosion1_f1.jpg)
This photo shows a pink clone of different stages of A. pisum (pea aphid), growing on fava bean. A. pisum is the host species of the bacteria Buchnera aphidicola.
Credit: Nancy Moran, University of Arizona
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![Buchnera cells (green dots) and aphid nucleus (larger body).](/news/mmg/media/images/genome_erosion2_f.jpg)
This image shows DNA stain of a disrupted bacteriocyte, a specialized cell in the aphid that contains bacteria. The green dots are Buchnera cells (bacteria), while the larger body is an aphid nucleus.
Credit: Nancy Moran, University of Arizona
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![Cover of January 16, 2009, issue of Science magazine](/news/mmg/media/images/genome_erosion3_f.jpg)
The researchers' findings appear in the January 16, 2009, issue of Science magazine.
Credit: Copyright 2009 AAAS
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