Transcriptomics

Dataset Information

0

Engineered cell elongation promotes extracellular electron transfer of Shewanella oneidensis


ABSTRACT: To investigate how cell elongation impacts extracellular electron transfer (EET) of electroactive microorganisms (EAMs), the division of model EAM Shewanella oneidensis MR-1 was engineered by reducing the formation of cell divisome. Specially, by blocking the translation of division proteins via anti-sense RNAs or expressing division inhibitors, the cellular length and output power density were all increased. Electrophysiological and transcriptomic results synergistically revealed that the programmed cell elongation reinforced EET by enhancing NADH oxidation, inner-membrane quinone pool, and abundance of c-type cytochromes. Moreover, cell elongation enhanced hydrophobicity due to decreased cell-surface polysaccharide, thus facilitated initial surface adhesion stage in biofilm formation. The output current and power density all increased in positive correction with cellular length. However, inhibition of cell division reduced cell growth, which was then restored by quorum sensing-based dynamic regulation of cell growth and elongation phases. The QS-regulated elongated strain thus enabled a cell length of 143.6 ± 40.3 µm (72.6-fold of that of S. oneidensis MR-1), which resulted in an output power density of 248.0 ± 10.6 mW m-2 (3.41-fold of that of S. oneidensis MR-1) and exhibited superior potential for pollutant treatment. Engineering cellular length paves an innovate avenue for enhancing the EET of EAMs.

ORGANISM(S): Shewanella oneidensis MR-1

PROVIDER: GSE244261 | GEO | 2024/09/25

REPOSITORIES: GEO

Dataset's files

Source:
Action DRS
Other
Items per page:
1 - 1 of 1

Similar Datasets

2014-07-14 | GSE50443 | GEO
2016-12-08 | PXD004090 | Pride
2019-11-01 | GSE129679 | GEO
2011-08-19 | E-GEOD-31535 | biostudies-arrayexpress
2011-01-01 | E-GEOD-24994 | biostudies-arrayexpress
2010-09-01 | GSE14331 | GEO
2012-07-19 | GSE39462 | GEO
2010-12-07 | E-GEOD-25865 | biostudies-arrayexpress
2012-07-19 | GSE39474 | GEO
2012-04-30 | E-GEOD-25821 | biostudies-arrayexpress