Multi-Omic Dynamics Associate Oxygenic Photosynthesis with Nitrogenase-Mediated H2 Production in Cyanothece sp. ATCC 51142
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BiBTeXTo date, the proposed mechanisms of nitrogenase-driven photosynthetic H2 production by the diazotrophic unicellular cyanobacterium Cyanothece sp. ATCC 51142 have assumed that reductant and ATP requirements are derived solely from glycogen oxidation and cyclic-electron flow around photosystem I. Through genome-scale transcript and protein profiling, this study presents and tests a new hypothesis on the metabolic relationship between oxygenic photosynthesis and nitrogenase-mediated H2 production in Cyanothece 51142. Our results show that net-positive rates of oxygenic photosynthesis and increased expression of photosystem II reaction centers correspond and are synchronized with nitrogenase expression and H2 production. These findings provide a new and more complete view on the metabolic processes contributing to the energy budget of photosynthetic H2 production and highlight the role of concurrent photocatalytic H2O oxidation as a participating process.
SEEK ID: https://emsl-seek.pnnl.gov/publications/25
PubMed ID: 26525576
Projects: Adaptive Responses, Energy and Material Processing, Microbial Community Dynamics
Publication type: Not specified
Journal: Sci Rep
Citation: Sci Rep. 2015 Nov 3;5:16004. doi: 10.1038/srep16004.
Date Published: 4th Nov 2015
Registered Mode: Not specified
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Created: 8th Apr 2016 at 15:39
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