Reference : Swimming of bacterium Bacillus subtilis with multiple bundles of flagella

	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Chemistry Physical, chemical, mathematical & earth Sciences : Physics Engineering, computing & technology : Materials science & engineering
	To cite this reference:	http://hdl.handle.net/10993/41622

Title :	Swimming of bacterium Bacillus subtilis with multiple bundles of flagella
Language :	-
Author, co-author :	Najafi, Javad [Saarland Univ, Expt Phys, D-66123 Saarbrucken, Germany.]
	Altegoer, Florian [Philipps Univ Marburg, Dept Chem, D-35043 Marburg, Germany.]
	Bange, Gert [Philipps Univ Marburg, Dept Chem, D-35043 Marburg, Germany.]
	Wagner, Christian [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit]
Publication date :	2019
Journal title :	SOFT MATTER
Publisher :	Royal Soc Chemistry
Volume :	15
Issue/season :	48
Pages :	10029-10034
Peer reviewed :	Yes
ISSN :	1744-683X
City :	Cambridge
Abstract :	[en] We characterize the bundle properties for three different strains of B. subtilis bacteria with various numbers of flagella. Our study reveals that, surprisingly, the number of bundles is independent of the number of flagella, and the formation of three bundles is always the most frequent case. We assume that this relates to the fact that different mutants have the same body length. There is no significant difference between the bundle width and length for distinct strains, but the projected angle between the bundles increases with the flagellar number. Furthermore, we find that the swimming speed is anti-correlated with the projected angle between the bundles, and the wobbling angle between the swimming direction and cell body increases with the number of flagella. Our findings highlight the impact of geometrical properties of bacteria such as body length and bundle configuration on their motility.
Funders :	Deutsche Forschungsgemeinschaft (DFG)German Research Foundation (DFG) [CRC-TRR 174]
Permalink :	http://hdl.handle.net/10993/41622
DOI :	10.1039/c9sm01790a
Commentary :	We thank Daniel B. Kearns for providing us with the strains. JN Acknowledges Emmanuel Terriac for his initial help with the fluorescence microscopy. JN is also grateful to Thomas Eisenstecken and Mahdiyeh Mousavi for a fruitful discussion. GB thanks the Deutsche Forschungsgemeinschaft (DFG) for support through the CRC-TRR 174.

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