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Response of cbb gene transcription levels of four typical sulfur-oxidizing bacteria to the CO2 concentration and its effect on their carbon fixation efficiency during sulfur oxidation

Paper ID Volume ID Publish Year Pages File Format Full-Text
16757 42610 2016 10 PDF Available
Title
Response of cbb gene transcription levels of four typical sulfur-oxidizing bacteria to the CO2 concentration and its effect on their carbon fixation efficiency during sulfur oxidation
Abstract

•The CO2 fixing capabilities of four Thiabacillus differ greatly at 0.5% and 10% CO2.•The variability in CO2 fixing efficiency is mainly caused by cbb transcription level.•CO2 concentrations affect CO2 fixing efficiency of each bacterium in different ways.

The variability in carbon fixation capability of four sulfur-oxidizing bacteria (Thiobacillus thioparus DSM 505, Halothiobacillus neapolitanus DSM 15147, Starkeya novella DSM 506, and Thiomonas intermedia DSM 18155) during sulfur oxidation was studied at low and high concentrations of CO2. The mechanism underlying the variability in carbon fixation was clarified by analyzing the transcription of the cbb gene, which encodes the key enzyme ribulose-1,5-bisphosphate carboxylase/oxygenase. DSM 15147 and DSM 505 fixed carbon more efficiently during sulfur oxidation than DSM 506 and DSM 18155 at 0.5% and 10% CO2, which was mainly because their cbb gene transcription levels were much higher than those of DSM 506 and DSM 18155. A high CO2 concentration significantly stimulated the carbon fixation efficiency of DSM 505 by greatly increasing the cbb gene transcription efficiency. Moreover, the influence of the CO2 concentration on the carbon fixation efficiency of the four strains differed greatly during sulfur oxidation.

Keywords
Sulfur-oxidizing bacteria; Carbon fixation; CO2 concentration; cbb gene transcription level
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Response of cbb gene transcription levels of four typical sulfur-oxidizing bacteria to the CO2 concentration and its effect on their carbon fixation efficiency during sulfur oxidation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Enzyme and Microbial Technology - Volume 92, October 2016, Pages 31–40
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us