Public release date: 1-Oct-2012 [ | E-mail | Share ]

Contact: Phyllis Edelman pedelman@genetics-gsa.org 301-634-7302 Genetics Society of America

Bethesda, MDOctober 1, 2012 Listed below are the selected highlights for the October 2012 issue of the Genetics Society of America's journal, GENETICS. The October issue is available online at http://www.genetics.org/content/current. Please credit GENETICS, Vol. 192, October 2012, Copyright 2012.

Please feel free to forward to colleagues who may be interested in these articles.

ISSUE HIGHLIGHTS

Energy-dependent modulation of glucagon-like signaling in Drosophila via the AMP-activated protein kinase, pp. 457 Jason T. Braco, Emily L. Gillespie, Gregory E. Alberto, Jay E. Brenman, and Erik C. Johnson How organisms maintain energetic homeostasis is unclear. These authors show that the actions of a known cellular sensor of energythe AMP-activated protein kinase (AMPK)cause release of a glucagon-like hormone in Drosophila. They further show that AMPK regulates secretion of adipokinetic hormone. This suggests new roles and targets for AMPK and suggests metabolic networks are organized similarly throughout Metazoa.

The relation of codon bias to tissue-specific gene expression in Arabidopsis thaliana, pp. 641 Salvatore Camiolo, Lorenzo Farina, and Andrea Porceddu This article reports systematic differences in usage of synonymous codons in Arabidopsis thaliana genes whose expression is tissue specific. The authors propose that codon bias evolves as an adaptive response to the different abundances of tRNAs in different tissues.

Integrity and function of the Saccharomyces cerevisiae spindle pole body depends on connections between the membrane proteins Ndc1, Rtn1, and Yop1, pp. 441 Amanda K. Casey, T. Renee Dawson, Jingjing Chen, Jennifer M. Friederichs, Sue L. Jaspersen, and Susan R. Wente Budding yeast face an unusual challenge during cell division: they must segregate their chromosomes while the nuclear envelope remains intact. Consequently, mitosis begins with insertion of the duplicated spindle pole body (a.k.a. centrosome) into the nuclear envelope, a process that parallels the generation of new nuclear pore complexes. These authors report data that suggest new mechanisms for linking nuclear division and transport.

Cellular memory of acquired stress resistance in Saccharomyces cerevisiae, pp. 495 Qiaoning Guan, Suraiya Haroon, Diego Gonzlez Bravo, Jessica L. Will, and Audrey P. Gasch Cells can retain memory of prior experiences that influence future behaviors. Here, the authors show that budding yeast retains a multifaceted memory of prior stress treatment. Cells pretreated with salt retain peroxide tolerance for several generations after removal of the initial stressor. This is due to long-lived catalase, produced during salt treatment and distributed to daughter cells. These cells also display transcriptional memory dependent on the nuclear pore subunit Nup42 that functions to promote reacquisition of stress tolerance in future stress cycles.

Genomic variation in natural populations of Drosophila melanogaster, pp. 533 Charles H. Langley, Kristian Stevens, Charis Cardeno, Yuh Chwen G. Lee, Daniel R. Schrider, John E. Pool, Sasha A. Langley, Charlyn Suarez, Russell B. Corbett-Detig, Bryan Kolaczkowski, Shu Fang, Phillip M. Nista, Alisha K. Holloway, Andrew D. Kern, Colin N. Dewey, Yun S. Song, Matthew W. Hahn, and David J. Begun This article greatly extends studies of population genetic variation in natural populations of Drosophila melanogaster, which have played an important role in the development of evolutionary theory. The authors describe genome sequences of 43 individuals taken from two natural populations of D. melanogaster. The genetic polymorphism, divergence, and copy-number variation revealed in these data are presented at several scales, providing unprecedented insight into forces shaping genome polymorphism and divergence.

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Genetics Society of America's GENETICS journal highlights for October 2012

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