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Cellular ATP and biomass of attached and planktonic sulfur-oxidizing Acidithiobacillus ferrooxidans

Paper ID Volume ID Publish Year Pages File Format Full-Text
34612 45035 2013 4 PDF Available
Title
Cellular ATP and biomass of attached and planktonic sulfur-oxidizing Acidithiobacillus ferrooxidans
Abstract

•The cellular ATP content was 1.01 amol per attached cell and 0.34 amol per planktonic cell.•A minor a fraction of 3.7–14% of the total cell population was attached to the sulfur particles.•Attached cells and their ATP content made a minor contribution to the total biomass in the active growth phase.•The significantly lower ATP content per planktonic cell was attributed to sulfur limitation in the planktonic cells.

This study demonstrates differences in ATP levels between attached and planktonic cells of Acidithiobacillus ferrooxidans growing with elemental sulfur. A small fraction of 3.7–14.4% of the bacterial cells was attached to the sulfur particles. The highest cell attachment of 14.4% was at the end of the lag phase, decreasing to 3.7% into the latter part of the active growth phase. Therefore, attached cells and their ATP content made a minor contribution to the total culture biomass in the active growth phase. However, the cellular ATP content was 1.01 amol per attached cell and 0.34 amol per planktonic cell. The significantly (P < 0.01) lower ATP content was attributed to sulfur limitation in the planktonic cells. These results suggest that a negligibly small subpopulation may be a link in cooperative interaction whereby sulfur oxidation by attached cells under boundary conditions provides bioavailable substrates to planktonic cells in the population.

Keywords
Acidithiobacillus ferrooxidans; ATP; Attached bacterial cells; Cellular carbon; Sulfur oxidation
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Cellular ATP and biomass of attached and planktonic sulfur-oxidizing Acidithiobacillus ferrooxidans
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 48, Issue 11, November 2013, Pages 1785–1788
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