This Week in PNAS

In a paper appearing in this week's PNAS Early Edition, a team led by investigators at the Salk Institute for Biological Studies in La Jolla, Calif., shows that, in response to salicylic acid exposure, transposon-associated differentially methylated regions in Arabidopsis thaliana that are accompanied by the upregulation of 21-nt siRNAs are often coupled to transcriptional changes of the transposon and/or the proximal gene.

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American scientists find themselves once again warning the Trump administration not to dismiss science, the New Yorker report.

A new study suggests CRISPR could be used to save coral reefs from dying off, Forbes reports.

Researchers have found that the i-motif shape of DNA previously observed in the lab also exists in human cells, and that it may serve a purpose.

In PNAS this week: a genomic, transcriptomic, and metabolomic analysis of the tea plant, Arabidopsis thaliana's adaptations to specific local environments, and more.