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Proteomic Analysis of Moorella thermoacetica-g-C3N4 Nanocomposite system for Artificial Photosynthesis

ABSTRACT: Proteomic analysis was utilized to explore the effects on the microorganism induced by the carbon-based semiconductor. We then characterized the proteomic and changes of the proposed M. thermoacetica-g-C3N4 hybrid system during light harvesting, and proposed the electron transfer, energy generation and CO2 fixation mechanism.

ORGANISM(S): Moorella Thermoacetica

SUBMITTER: Qiao Liang

PROVIDER: PXD050430 | iProX | Wed Mar 06 00:00:00 GMT 2024

REPOSITORIES: iProX

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Project description:Marine phytoplankton are a diverse group of photoautotrophic organisms and key mediators in the global carbon cycle. Phytoplankton physiology and biomass accumulation are closely tied to mixed layer depth, but the intracellular metabolic pathways activated in response to changing mixed layer depths remain unexplored. Here, metatranscriptomics was used to characterize the phytoplankton community response to a mixed layer shallowing from 233 meters to 5 meters over the course of two days during the late spring in the Northwest Atlantic. Most phytoplankton genera downregulated core photosynthesis, carbon storage, and carbon fixation genes as the system transitioned from a deep to a shallow mixed layer and shifted towards catabolism of stored carbon ic pathways supportive of rapid cell growth. In contrast, phytoplankton genera exhibited divergent transcriptional strategies for photosystem light harvesting complex genes during this transition. Active infection, taken as the ratio of virus to host transcripts, increased in the Bacillariophyta (diatom) phylum and decreased in the Chlorophyta (green algae) phylum upon mixed layer shallowing. A conceptual model is proposed to provide ecophysiological context for our findings, in which light limitation during deep mixing induces populations into a transcriptional state which maximizes interrupts the oscillating levels of transcripts related to photosynthesis, carbon storage, and carbon fixation found in shallow mixed layers with relatively higher growth rates. We propose that upon sensing high light levels during mixed layer shallowing, phytoplankton resume diel oscillation of core sets of genes enabling photoprotection, biosynthesis and cell replication. Our findings highlight the shared and unique transcriptional response strategies within phytoplankton communities acclimating to the dynamic light environment associated with transient deep mixing and shallowing events during the annual North Atlantic bloom.

Dataset Information

Proteomic Analysis of Moorella thermoacetica-g-C3N4 Nanocomposite system for Artificial Photosynthesis

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