Tumble Suppression Is a Conserved Feature of Swarming Motility

ABSTRACT Many bacteria use flagellum-driven motility to swarm or move collectively over a surface terrain. Bacterial adaptations for swarming can include cell elongation, hyperflagellation, recruitment of special stator proteins, and surfactant secretion, among others. We recently demonstrated anoth...

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Autores principales:	Jonathan D. Partridge, Nguyen T. Q. Nhu, Yann S. Dufour, Rasika M. Harshey
Formato:	article
Lenguaje:	EN
Publicado:	American Society for Microbiology 2020
Materias:	Bacillus chemotaxis E. coli flagellar motility Lévy walk Proteus Microbiology QR1-502
Acceso en línea:	https://doaj.org/article/faa27bcf78ac493eab0a83e2d7277849
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spelling	oai:doaj.org-article:faa27bcf78ac493eab0a83e2d72778492021-11-15T15:56:47ZTumble Suppression Is a Conserved Feature of Swarming Motility10.1128/mBio.01189-202150-7511https://doaj.org/article/faa27bcf78ac493eab0a83e2d72778492020-06-01T00:00:00Zhttps://journals.asm.org/doi/10.1128/mBio.01189-20https://doaj.org/toc/2150-7511ABSTRACT Many bacteria use flagellum-driven motility to swarm or move collectively over a surface terrain. Bacterial adaptations for swarming can include cell elongation, hyperflagellation, recruitment of special stator proteins, and surfactant secretion, among others. We recently demonstrated another swarming adaptation in Escherichia coli, wherein the chemotaxis pathway is remodeled to decrease tumble bias (increase run durations), with running speeds increased as well. We show here that the modification of motility parameters during swarming is not unique to E. coli but is shared by a diverse group of bacteria we examined—Proteus mirabilis, Serratia marcescens, Salmonella enterica, Bacillus subtilis, and Pseudomonas aeruginosa—suggesting that increasing run durations and speeds are a cornerstone of swarming. IMPORTANCE Bacteria within a swarm move characteristically in packs, displaying an intricate swirling motion in which hundreds of dynamic rafts continuously form and dissociate as the swarm colonizes an increasing expanse of territory. The demonstrated property of E. coli to reduce its tumble bias and hence increase its run duration during swarming is expected to maintain and promote side-by-side alignment and cohesion within the bacterial packs. In this study, we observed a similar low tumble bias in five different bacterial species, both Gram positive and Gram negative, each inhabiting a unique habitat and posing unique problems to our health. The unanimous display of an altered run-tumble bias in swarms of all species examined in this investigation suggests that this behavioral adaptation is crucial for swarming.Jonathan D. PartridgeNguyen T. Q. NhuYann S. DufourRasika M. HarsheyAmerican Society for MicrobiologyarticleBacilluschemotaxisE. coliflagellar motilityLévy walkProteusMicrobiologyQR1-502ENmBio, Vol 11, Iss 3 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Bacillus chemotaxis E. coli flagellar motility Lévy walk Proteus Microbiology QR1-502
spellingShingle	Bacillus chemotaxis E. coli flagellar motility Lévy walk Proteus Microbiology QR1-502 Jonathan D. Partridge Nguyen T. Q. Nhu Yann S. Dufour Rasika M. Harshey Tumble Suppression Is a Conserved Feature of Swarming Motility
description	ABSTRACT Many bacteria use flagellum-driven motility to swarm or move collectively over a surface terrain. Bacterial adaptations for swarming can include cell elongation, hyperflagellation, recruitment of special stator proteins, and surfactant secretion, among others. We recently demonstrated another swarming adaptation in Escherichia coli, wherein the chemotaxis pathway is remodeled to decrease tumble bias (increase run durations), with running speeds increased as well. We show here that the modification of motility parameters during swarming is not unique to E. coli but is shared by a diverse group of bacteria we examined—Proteus mirabilis, Serratia marcescens, Salmonella enterica, Bacillus subtilis, and Pseudomonas aeruginosa—suggesting that increasing run durations and speeds are a cornerstone of swarming. IMPORTANCE Bacteria within a swarm move characteristically in packs, displaying an intricate swirling motion in which hundreds of dynamic rafts continuously form and dissociate as the swarm colonizes an increasing expanse of territory. The demonstrated property of E. coli to reduce its tumble bias and hence increase its run duration during swarming is expected to maintain and promote side-by-side alignment and cohesion within the bacterial packs. In this study, we observed a similar low tumble bias in five different bacterial species, both Gram positive and Gram negative, each inhabiting a unique habitat and posing unique problems to our health. The unanimous display of an altered run-tumble bias in swarms of all species examined in this investigation suggests that this behavioral adaptation is crucial for swarming.
format	article
author	Jonathan D. Partridge Nguyen T. Q. Nhu Yann S. Dufour Rasika M. Harshey
author_facet	Jonathan D. Partridge Nguyen T. Q. Nhu Yann S. Dufour Rasika M. Harshey
author_sort	Jonathan D. Partridge
title	Tumble Suppression Is a Conserved Feature of Swarming Motility
title_short	Tumble Suppression Is a Conserved Feature of Swarming Motility
title_full	Tumble Suppression Is a Conserved Feature of Swarming Motility
title_fullStr	Tumble Suppression Is a Conserved Feature of Swarming Motility
title_full_unstemmed	Tumble Suppression Is a Conserved Feature of Swarming Motility
title_sort	tumble suppression is a conserved feature of swarming motility
publisher	American Society for Microbiology
publishDate	2020
url	https://doaj.org/article/faa27bcf78ac493eab0a83e2d7277849
work_keys_str_mv	AT jonathandpartridge tumblesuppressionisaconservedfeatureofswarmingmotility AT nguyentqnhu tumblesuppressionisaconservedfeatureofswarmingmotility AT yannsdufour tumblesuppressionisaconservedfeatureofswarmingmotility AT rasikamharshey tumblesuppressionisaconservedfeatureofswarmingmotility
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Tumble Suppression Is a Conserved Feature of Swarming Motility

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