Title: The diversity and evolution of microbial dissimilatory phosphite oxidation

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America
ORCiD logo [1]; ORCiD logo [2];  [2];  [3]; ORCiD logo [4]; ORCiD logo [3];  [5]
  1. Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720,, Energy &, Biosciences Institute, University of California, Berkeley, CA 94720,
  2. Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720,
  3. Department of Soil and Crop Sciences, Colorado State University, Fort Collins, CO 80523,
  4. Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
  5. Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720,, Energy &, Biosciences Institute, University of California, Berkeley, CA 94720,, Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720

Significance Geochemical models of the phosphorus (P) cycle uniquely ignore microbial redox transformations. Yet phosphite is a reduced P source that has been detected in several environments at concentrations that suggest a contemporary P redox cycle. Microbial dissimilatory phosphite oxidation (DPO) converts soluble phosphite into phosphate, and a false notion of rarity has limited our understanding of its diversity and environmental distribution. Here we demonstrate that DPO is an ancient energy metabolism hosted by taxonomically diverse, autotrophic bacteria that exist globally throughout anoxic environments. DPO microorganisms are therefore likely to have provided bioavailable phosphate and fixed carbon to anoxic ecosystems throughout Earth’s history and continue to do so in contemporary environments.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-05CH11231; SC0020156
OSTI ID:
1770007
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Issue: 11 Vol. 118; ISSN 0027-8424
Publisher:
Proceedings of the National Academy of SciencesCopyright Statement
Country of Publication:
United States
Language:
English

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