Technical Comments

Comment on “A Bacterium That Can Grow by Using Arsenic Instead of Phosphorus”

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Science  27 May 2011:
DOI: 10.1126/science.1201943


Wolfe-Simon et al. (Science Express Research Article, published online 2 December 2010; 10.1126/science.1197258) reported that the bacterial strain GFAJ-1 can grow by using arsenic (As) instead of phosphorus (P), noting that the P content in bacteria grown in +As/–P culture medium was far below the quantity needed to support growth. However, low P content is a common phenotype across a broad range of environmental bacteria that experience P limitation.