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Genetics Society of America's Genetics journal highlights for December 2012
Date:12/4/2012

norhabditis elegans, pp. 1359-1371
Gliz Grel, Megan A. Gustafson, Judy S. Pepper, H. Robert Horvitz, and Michael R. Koelle
This article offers insight into the mechanism of signaling by serotonin, a neurotransmitter involved in mood disorders in humans. The authors carried out screens for C. elegans mutants that fail to respond properly to this neurotransmitter, which worms use to control locomotion. They identified mutations in more than eight genes required for serotonin signaling. Two encode serotonin receptors, while the others encode proteins that in some cases are implicated for the first time in serotonin signaling by this work. There are similar human proteins that may mediate serotonin signaling in our brains. The two C. elegans serotonin receptors appear to act in parallel in different cells to coordinate behavioral responses to serotonin.

Long-term and short-term evolutionary impacts of transposable elements on Drosophila, pp. 1411-1432
Yuh Chwen G. Lee and Charles H. Langley
Transposable elements are ubiquitous genomic parasites. Even though they are primarily vertically inherited as part of the genome, their interactions with the host are often likened to the coevolution of host genes and nongenomic, horizontally transferred pathogens. Here Lee and Langley show that genes involved in the interaction with transposable elements indeed show strong signals of positive selection similar to those of immunity genes in Drosophila, but with a fundamentally different mechanism from that of host-pathogen coevolution.

Unusual and typical features of a novel restorer-of-fertility gene of sugar beet (Beta vulgaris L.), pp. 1347-1358
Hiroaki Matsuhira, Hiroyo Kagami, Masayuki Kurata, Kazuyoshi Kitazaki, Muneyuki Matsunaga, Yuko Hamaguchi, Eiki Hagihara, Minoru Ueda, Michiyo Harada, Aki Muramatsu, Rika Yui-Kurino, Kazunori Taguchi, Hideto Tamagake, Tetsuo Mikami, and To
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Contact: Phyllis Edelman
pedelman@genetics-gsa.org
301-634-7302
Genetics Society of America
Source:Eurekalert

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