This Week in PNAS

Korean researchers sequenced the genome of a bacteria-infecting marine virus that could be cultured in the lab and used the genome data to help interpret metagenomic sequence data for phages found in the ocean in general — work they describe the early, online edition of the Proceedings of the National Academy of Sciences. The team sequenced the 55,000 or so bases of the HMO-2001 genome, representing a bacteriophage from a widespread marine phage clade called SAR116.

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Technology Review reports that researchers in the US have used CRISPR to modify a number of human embryos.

By introducing genes from butterfly peas and Canterbury bells, researchers in Japan have developed a blue chrysanthemum, according to NPR.

Plant researchers plan to sequence some 10,000 samples that represent the major plant clades, ScienceInsider reports.

In Nature this week: a Danish reference genome, and more.