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This Week in Science: Oct 21, 2011

In a paper published online in advance in Science this week, Boston University's Horacio Frydman and his colleagues show that "Drosophila mauritiana infected with a native Wolbachia wMau strain produces about four times more eggs than the noninfected counterpart." That's because, Frydman et al. say, "Wolbachia infection leads to an increase in the mitotic activity of germline stem cells as well as a decrease in programmed cell death in the germarium."

Over in this week's issue, Science's Mara Hvistendahl examines "recent efforts to clean up China's academic publishing industry." She says "the country's 4,700 scientific periodicals include a hefty number of what the Chinese press refers to as 'trash journals.'" Hvistendahl says many of these journals now — or soon will — face the chopping block. Cell Research Editor-in-Chief Gang Pei tells Science that "by administrative measures or by market measures ... there will be some kind of cleanup."

The Scan

Genome Sequences Reveal Range Mutations in Induced Pluripotent Stem Cells

Researchers in Nature Genetics detect somatic mutation variation across iPSCs generated from blood or skin fibroblast cell sources, along with selection for BCOR gene mutations.

Researchers Reprogram Plant Roots With Synthetic Genetic Circuit Strategy

Root gene expression was altered with the help of genetic circuits built around a series of synthetic transcriptional regulators in the Nicotiana benthamiana plant in a Science paper.

Infectious Disease Tracking Study Compares Genome Sequencing Approaches

Researchers in BMC Genomics see advantages for capture-based Illumina sequencing and amplicon-based sequencing on the Nanopore instrument, depending on the situation or samples available.

LINE-1 Linked to Premature Aging Conditions

Researchers report in Science Translational Medicine that the accumulation of LINE-1 RNA contributes to premature aging conditions and that symptoms can be improved by targeting them.