2022
DOI: 10.1038/s41396-022-01279-8
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Complex extracellular biology drives surface competition during colony expansion in Bacillus subtilis

Abstract: Many bacteria grow on surfaces in nature, where they form cell collectives that compete for space. Within these collectives, cells often secrete molecules that benefit surface spreading by, for example, reducing surface tension or promoting filamentous growth. Although we have a detailed understanding of how these molecules are produced, much remains unknown about their role in surface competition. Here we examine sliding motility in Bacillus subtilis and compare how secreted molecules, essential for sliding, … Show more

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Cited by 30 publications
(24 citation statements)
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“…This study makes explicit that the cellular arrangement and tightly packed structure of clonal V. cholerae groups can operate as a type of public good (39, 91) that confers predator protection to the cells within (among many other benefits (30, 30, 3335, 55, 74, 9296)). Other species – here, E. coli , whose mono-species biofilms are susceptible to B. bacteriovorus – can take advantage of this protective architecture when small groups of them become enveloped by expanding, highly packed biofilms of V. cholerae .…”
Section: Discussionmentioning
confidence: 99%
“…This study makes explicit that the cellular arrangement and tightly packed structure of clonal V. cholerae groups can operate as a type of public good (39, 91) that confers predator protection to the cells within (among many other benefits (30, 30, 3335, 55, 74, 9296)). Other species – here, E. coli , whose mono-species biofilms are susceptible to B. bacteriovorus – can take advantage of this protective architecture when small groups of them become enveloped by expanding, highly packed biofilms of V. cholerae .…”
Section: Discussionmentioning
confidence: 99%
“…For example, the spatial details of how cooperative interactions play out, such as how far do public goods diffuse, and who benefits, as well as how much these vary in different environments, and the frequency with which different environments are encountered (28, 82). Indeed, cooperative traits in B. subtilis vary in the degree to which they are shared depending on whether groups are exhibiting sliding motility or growing in biofilms (16). In contrast, the indirect measure provided by population genetics represents an average for the different cooperative traits, over the different environments encountered, over evolutionary time.…”
Section: Resultsmentioning
confidence: 99%
“…We took advantage of the vcf-tools software , which allowed us to randomly remove strains from our analysis. This enabled us to conduct a basic analysis on polymorphism for a groups of N strains (N = 4, 6,8,10,12,14,16,18,20,22,24,26,28), with 22 iterations of each number of strains Within any analysis, we focussed on the 3570 genes which are present in all strains, and calculated mean and median polymorphism (average pairwise polymorphism, relative to gene length) (Supplementary Figure S5.1). S5.1: (A) Median polymorphism, (B) Mean polymorphism as the number of strains uses in the analysis varies.…”
Section: Power Analysismentioning
confidence: 99%
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