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Science 16 November 2001:
Vol. 294. no. 5546, p. 1435
DOI: 10.1126/science.294.5546.1435a
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News of the Week

MICROBIOLOGY:
Multitasking Is This Plankton's Trademark

Elizabeth Pennisi

Like many other so-called cyanobacteria, Trichodesmium processes nitrogen to make ammonia and also produces oxygen via photosynthesis, activities that are usually chemically incompatible. Now, researchers think they have figured out how Trichodesmium seemingly manages both processes at once. As reported on page 1534, this cyanobacterium carefully balances the amount of time it spends on photosynthesis and nitrogen fixation, shifting from one process to the other.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)