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Breaking the aphid's code
Date:2/23/2010

Coral Gables, FL (February 23, 2010)For the first time, scientists have sequenced the entire genome of the pea aphid, a notorious horticultural and agricultural pest. The findings reveal the extent of the genetic collaboration of the aphid host with its bacterial symbiont, which may account for some of the extraordinary characteristics of this insect.

Aphids are among the first insects to appear in early spring on crops. They possess incredible adaptive abilities, and under optimal conditions, reproduce very rapidly. They live by sucking the juices of plants, and if left untreated they can cause plant death. All this means trouble for growers. Annual global crop losses associated with aphids run at hundreds of millions of dollars.

"The most important direct benefits to society from this project will come from the way the project increases our ability to understand the ways that aphids interact with their host plants, the plant viruses they transmit, and their bacterial symbionts. These aspects of aphid biology directly impact food supply and pesticide use," says Alex Wilson, assistant professor of biology at the University of Miami College of Arts and Sciences, and representative for the Americas on the Board of the International Aphid Genomics Consortium, who also serves as member of the project leadership team.

The new study by the International Aphid Genomics Consortium uncovers some of the best-kept secrets of this amazing creature. The study entitled "Genome Sequence of the Pea Aphid Acyrthosiphon pisum" was published online today by PLoS Biology. Genomic analysis of the pea aphid and its bacterial symbiont, Buchnera aphidicola, implicates extensive collaboration between the two partners.

"We found that the interaction of the pea aphid with its bacterial symbiont is far more intimate than anyone had previously envisioned," says Wilson. "We hypothesize, based on the genome sequence that they each com
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Contact: Marie Guma-Diaz
m.gumadiaz@umiami.edu
305-284-1601
University of Miami
Source:Eurekalert  

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