Manipulating the physical distance between cells during soil colonization reveals the importance of biotic interactions in microbial community assembly

Background Microbial communities are of tremendous importance for ecosystem functioning and yet we know little about the ecological processes driving the assembly of these communities in the environment. Here, we used an unprecedented experimental approach based on the manipulation of physical dista...
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Autor*in:	Romdhane, Sana [verfasserIn] Huet, Sarah Spor, Aymé Bru, David Breuil, Marie-Christine Philippot, Laurent

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2024

Schlagwörter:	Microbial interactions Community manipulation Coalescence Microbial assembly

Anmerkung:	© The Author(s) 2024

Übergeordnetes Werk:	Enthalten in: Environmental microbiome - BioMed Central, 2020, 19(2024), 1 vom: 19. März
Übergeordnetes Werk:	volume:19 ; year:2024 ; number:1 ; day:19 ; month:03

Links:	Volltext

DOI / URN:	10.1186/s40793-024-00559-4

Katalog-ID:	SPR055217990

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520			\|a Background Microbial communities are of tremendous importance for ecosystem functioning and yet we know little about the ecological processes driving the assembly of these communities in the environment. Here, we used an unprecedented experimental approach based on the manipulation of physical distance between neighboring cells during soil colonization to determine the role of bacterial interactions in soil community assembly. We hypothesized that experimentally manipulating the physical distance between bacterial cells will modify the interaction strengths leading to differences in microbial community composition, with increasing distance between neighbors favoring poor competitors. Results We found significant differences in both bacterial community diversity, composition and co-occurrence networks after soil colonization that were related to physical distancing. We show that reducing distances between cells resulted in a loss of bacterial diversity, with at least 41% of the dominant OTUs being significantly affected by physical distancing. Our results suggest that physical distancing may differentially modulate competitiveness between neighboring species depending on the taxa present in the community. The mixing of communities that assembled at high and low cell densities did not reveal any “home field advantage” during coalescence. This confirms that the observed differences in competitiveness were due to biotic rather than abiotic filtering. Conclusions Our study demonstrates that the competitiveness of bacteria strongly depends on cell density and community membership, therefore highlighting the fundamental role of microbial interactions in the assembly of soil communities.
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allfields	10.1186/s40793-024-00559-4 doi (DE-627)SPR055217990 (SPR)s40793-024-00559-4-e DE-627 ger DE-627 rakwb eng 570 VZ Romdhane, Sana verfasserin (orcid)0000-0003-0295-2278 aut Manipulating the physical distance between cells during soil colonization reveals the importance of biotic interactions in microbial community assembly 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2024 Background Microbial communities are of tremendous importance for ecosystem functioning and yet we know little about the ecological processes driving the assembly of these communities in the environment. Here, we used an unprecedented experimental approach based on the manipulation of physical distance between neighboring cells during soil colonization to determine the role of bacterial interactions in soil community assembly. We hypothesized that experimentally manipulating the physical distance between bacterial cells will modify the interaction strengths leading to differences in microbial community composition, with increasing distance between neighbors favoring poor competitors. Results We found significant differences in both bacterial community diversity, composition and co-occurrence networks after soil colonization that were related to physical distancing. We show that reducing distances between cells resulted in a loss of bacterial diversity, with at least 41% of the dominant OTUs being significantly affected by physical distancing. Our results suggest that physical distancing may differentially modulate competitiveness between neighboring species depending on the taxa present in the community. The mixing of communities that assembled at high and low cell densities did not reveal any “home field advantage” during coalescence. This confirms that the observed differences in competitiveness were due to biotic rather than abiotic filtering. Conclusions Our study demonstrates that the competitiveness of bacteria strongly depends on cell density and community membership, therefore highlighting the fundamental role of microbial interactions in the assembly of soil communities. Microbial interactions (dpeaa)DE-He213 Community manipulation (dpeaa)DE-He213 Coalescence (dpeaa)DE-He213 Microbial assembly (dpeaa)DE-He213 Huet, Sarah aut Spor, Aymé (orcid)0000-0002-4707-9559 aut Bru, David aut Breuil, Marie-Christine aut Philippot, Laurent (orcid)0000-0003-3461-4492 aut Enthalten in Environmental microbiome BioMed Central, 2020 19(2024), 1 vom: 19. März Online-Ressource (DE-627)168908779X (DE-600)3007163-X 2524-6372 nnns volume:19 year:2024 number:1 day:19 month:03 https://dx.doi.org/10.1186/s40793-024-00559-4 kostenfrei Volltext SYSFLAG_0 GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 19 2024 1 19 03
spelling	10.1186/s40793-024-00559-4 doi (DE-627)SPR055217990 (SPR)s40793-024-00559-4-e DE-627 ger DE-627 rakwb eng 570 VZ Romdhane, Sana verfasserin (orcid)0000-0003-0295-2278 aut Manipulating the physical distance between cells during soil colonization reveals the importance of biotic interactions in microbial community assembly 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2024 Background Microbial communities are of tremendous importance for ecosystem functioning and yet we know little about the ecological processes driving the assembly of these communities in the environment. Here, we used an unprecedented experimental approach based on the manipulation of physical distance between neighboring cells during soil colonization to determine the role of bacterial interactions in soil community assembly. We hypothesized that experimentally manipulating the physical distance between bacterial cells will modify the interaction strengths leading to differences in microbial community composition, with increasing distance between neighbors favoring poor competitors. Results We found significant differences in both bacterial community diversity, composition and co-occurrence networks after soil colonization that were related to physical distancing. We show that reducing distances between cells resulted in a loss of bacterial diversity, with at least 41% of the dominant OTUs being significantly affected by physical distancing. Our results suggest that physical distancing may differentially modulate competitiveness between neighboring species depending on the taxa present in the community. The mixing of communities that assembled at high and low cell densities did not reveal any “home field advantage” during coalescence. This confirms that the observed differences in competitiveness were due to biotic rather than abiotic filtering. Conclusions Our study demonstrates that the competitiveness of bacteria strongly depends on cell density and community membership, therefore highlighting the fundamental role of microbial interactions in the assembly of soil communities. Microbial interactions (dpeaa)DE-He213 Community manipulation (dpeaa)DE-He213 Coalescence (dpeaa)DE-He213 Microbial assembly (dpeaa)DE-He213 Huet, Sarah aut Spor, Aymé (orcid)0000-0002-4707-9559 aut Bru, David aut Breuil, Marie-Christine aut Philippot, Laurent (orcid)0000-0003-3461-4492 aut Enthalten in Environmental microbiome BioMed Central, 2020 19(2024), 1 vom: 19. März Online-Ressource (DE-627)168908779X (DE-600)3007163-X 2524-6372 nnns volume:19 year:2024 number:1 day:19 month:03 https://dx.doi.org/10.1186/s40793-024-00559-4 kostenfrei Volltext SYSFLAG_0 GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 19 2024 1 19 03
allfields_unstemmed	10.1186/s40793-024-00559-4 doi (DE-627)SPR055217990 (SPR)s40793-024-00559-4-e DE-627 ger DE-627 rakwb eng 570 VZ Romdhane, Sana verfasserin (orcid)0000-0003-0295-2278 aut Manipulating the physical distance between cells during soil colonization reveals the importance of biotic interactions in microbial community assembly 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2024 Background Microbial communities are of tremendous importance for ecosystem functioning and yet we know little about the ecological processes driving the assembly of these communities in the environment. Here, we used an unprecedented experimental approach based on the manipulation of physical distance between neighboring cells during soil colonization to determine the role of bacterial interactions in soil community assembly. We hypothesized that experimentally manipulating the physical distance between bacterial cells will modify the interaction strengths leading to differences in microbial community composition, with increasing distance between neighbors favoring poor competitors. Results We found significant differences in both bacterial community diversity, composition and co-occurrence networks after soil colonization that were related to physical distancing. We show that reducing distances between cells resulted in a loss of bacterial diversity, with at least 41% of the dominant OTUs being significantly affected by physical distancing. Our results suggest that physical distancing may differentially modulate competitiveness between neighboring species depending on the taxa present in the community. The mixing of communities that assembled at high and low cell densities did not reveal any “home field advantage” during coalescence. This confirms that the observed differences in competitiveness were due to biotic rather than abiotic filtering. Conclusions Our study demonstrates that the competitiveness of bacteria strongly depends on cell density and community membership, therefore highlighting the fundamental role of microbial interactions in the assembly of soil communities. Microbial interactions (dpeaa)DE-He213 Community manipulation (dpeaa)DE-He213 Coalescence (dpeaa)DE-He213 Microbial assembly (dpeaa)DE-He213 Huet, Sarah aut Spor, Aymé (orcid)0000-0002-4707-9559 aut Bru, David aut Breuil, Marie-Christine aut Philippot, Laurent (orcid)0000-0003-3461-4492 aut Enthalten in Environmental microbiome BioMed Central, 2020 19(2024), 1 vom: 19. März Online-Ressource (DE-627)168908779X (DE-600)3007163-X 2524-6372 nnns volume:19 year:2024 number:1 day:19 month:03 https://dx.doi.org/10.1186/s40793-024-00559-4 kostenfrei Volltext SYSFLAG_0 GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 19 2024 1 19 03
allfieldsGer	10.1186/s40793-024-00559-4 doi (DE-627)SPR055217990 (SPR)s40793-024-00559-4-e DE-627 ger DE-627 rakwb eng 570 VZ Romdhane, Sana verfasserin (orcid)0000-0003-0295-2278 aut Manipulating the physical distance between cells during soil colonization reveals the importance of biotic interactions in microbial community assembly 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2024 Background Microbial communities are of tremendous importance for ecosystem functioning and yet we know little about the ecological processes driving the assembly of these communities in the environment. Here, we used an unprecedented experimental approach based on the manipulation of physical distance between neighboring cells during soil colonization to determine the role of bacterial interactions in soil community assembly. We hypothesized that experimentally manipulating the physical distance between bacterial cells will modify the interaction strengths leading to differences in microbial community composition, with increasing distance between neighbors favoring poor competitors. Results We found significant differences in both bacterial community diversity, composition and co-occurrence networks after soil colonization that were related to physical distancing. We show that reducing distances between cells resulted in a loss of bacterial diversity, with at least 41% of the dominant OTUs being significantly affected by physical distancing. Our results suggest that physical distancing may differentially modulate competitiveness between neighboring species depending on the taxa present in the community. The mixing of communities that assembled at high and low cell densities did not reveal any “home field advantage” during coalescence. This confirms that the observed differences in competitiveness were due to biotic rather than abiotic filtering. Conclusions Our study demonstrates that the competitiveness of bacteria strongly depends on cell density and community membership, therefore highlighting the fundamental role of microbial interactions in the assembly of soil communities. Microbial interactions (dpeaa)DE-He213 Community manipulation (dpeaa)DE-He213 Coalescence (dpeaa)DE-He213 Microbial assembly (dpeaa)DE-He213 Huet, Sarah aut Spor, Aymé (orcid)0000-0002-4707-9559 aut Bru, David aut Breuil, Marie-Christine aut Philippot, Laurent (orcid)0000-0003-3461-4492 aut Enthalten in Environmental microbiome BioMed Central, 2020 19(2024), 1 vom: 19. März Online-Ressource (DE-627)168908779X (DE-600)3007163-X 2524-6372 nnns volume:19 year:2024 number:1 day:19 month:03 https://dx.doi.org/10.1186/s40793-024-00559-4 kostenfrei Volltext SYSFLAG_0 GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 19 2024 1 19 03
allfieldsSound	10.1186/s40793-024-00559-4 doi (DE-627)SPR055217990 (SPR)s40793-024-00559-4-e DE-627 ger DE-627 rakwb eng 570 VZ Romdhane, Sana verfasserin (orcid)0000-0003-0295-2278 aut Manipulating the physical distance between cells during soil colonization reveals the importance of biotic interactions in microbial community assembly 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2024 Background Microbial communities are of tremendous importance for ecosystem functioning and yet we know little about the ecological processes driving the assembly of these communities in the environment. Here, we used an unprecedented experimental approach based on the manipulation of physical distance between neighboring cells during soil colonization to determine the role of bacterial interactions in soil community assembly. We hypothesized that experimentally manipulating the physical distance between bacterial cells will modify the interaction strengths leading to differences in microbial community composition, with increasing distance between neighbors favoring poor competitors. Results We found significant differences in both bacterial community diversity, composition and co-occurrence networks after soil colonization that were related to physical distancing. We show that reducing distances between cells resulted in a loss of bacterial diversity, with at least 41% of the dominant OTUs being significantly affected by physical distancing. Our results suggest that physical distancing may differentially modulate competitiveness between neighboring species depending on the taxa present in the community. The mixing of communities that assembled at high and low cell densities did not reveal any “home field advantage” during coalescence. This confirms that the observed differences in competitiveness were due to biotic rather than abiotic filtering. Conclusions Our study demonstrates that the competitiveness of bacteria strongly depends on cell density and community membership, therefore highlighting the fundamental role of microbial interactions in the assembly of soil communities. Microbial interactions (dpeaa)DE-He213 Community manipulation (dpeaa)DE-He213 Coalescence (dpeaa)DE-He213 Microbial assembly (dpeaa)DE-He213 Huet, Sarah aut Spor, Aymé (orcid)0000-0002-4707-9559 aut Bru, David aut Breuil, Marie-Christine aut Philippot, Laurent (orcid)0000-0003-3461-4492 aut Enthalten in Environmental microbiome BioMed Central, 2020 19(2024), 1 vom: 19. März Online-Ressource (DE-627)168908779X (DE-600)3007163-X 2524-6372 nnns volume:19 year:2024 number:1 day:19 month:03 https://dx.doi.org/10.1186/s40793-024-00559-4 kostenfrei Volltext SYSFLAG_0 GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 19 2024 1 19 03
language	English
source	Enthalten in Environmental microbiome 19(2024), 1 vom: 19. März volume:19 year:2024 number:1 day:19 month:03
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Here, we used an unprecedented experimental approach based on the manipulation of physical distance between neighboring cells during soil colonization to determine the role of bacterial interactions in soil community assembly. We hypothesized that experimentally manipulating the physical distance between bacterial cells will modify the interaction strengths leading to differences in microbial community composition, with increasing distance between neighbors favoring poor competitors. Results We found significant differences in both bacterial community diversity, composition and co-occurrence networks after soil colonization that were related to physical distancing. We show that reducing distances between cells resulted in a loss of bacterial diversity, with at least 41% of the dominant OTUs being significantly affected by physical distancing. Our results suggest that physical distancing may differentially modulate competitiveness between neighboring species depending on the taxa present in the community. The mixing of communities that assembled at high and low cell densities did not reveal any “home field advantage” during coalescence. This confirms that the observed differences in competitiveness were due to biotic rather than abiotic filtering. 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author	Romdhane, Sana
spellingShingle	Romdhane, Sana ddc 570 misc Microbial interactions misc Community manipulation misc Coalescence misc Microbial assembly Manipulating the physical distance between cells during soil colonization reveals the importance of biotic interactions in microbial community assembly
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topic_title	570 VZ Manipulating the physical distance between cells during soil colonization reveals the importance of biotic interactions in microbial community assembly Microbial interactions (dpeaa)DE-He213 Community manipulation (dpeaa)DE-He213 Coalescence (dpeaa)DE-He213 Microbial assembly (dpeaa)DE-He213
topic	ddc 570 misc Microbial interactions misc Community manipulation misc Coalescence misc Microbial assembly
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title	Manipulating the physical distance between cells during soil colonization reveals the importance of biotic interactions in microbial community assembly
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title_full	Manipulating the physical distance between cells during soil colonization reveals the importance of biotic interactions in microbial community assembly
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title_sort	manipulating the physical distance between cells during soil colonization reveals the importance of biotic interactions in microbial community assembly
title_auth	Manipulating the physical distance between cells during soil colonization reveals the importance of biotic interactions in microbial community assembly
abstract	Background Microbial communities are of tremendous importance for ecosystem functioning and yet we know little about the ecological processes driving the assembly of these communities in the environment. Here, we used an unprecedented experimental approach based on the manipulation of physical distance between neighboring cells during soil colonization to determine the role of bacterial interactions in soil community assembly. We hypothesized that experimentally manipulating the physical distance between bacterial cells will modify the interaction strengths leading to differences in microbial community composition, with increasing distance between neighbors favoring poor competitors. Results We found significant differences in both bacterial community diversity, composition and co-occurrence networks after soil colonization that were related to physical distancing. We show that reducing distances between cells resulted in a loss of bacterial diversity, with at least 41% of the dominant OTUs being significantly affected by physical distancing. Our results suggest that physical distancing may differentially modulate competitiveness between neighboring species depending on the taxa present in the community. The mixing of communities that assembled at high and low cell densities did not reveal any “home field advantage” during coalescence. This confirms that the observed differences in competitiveness were due to biotic rather than abiotic filtering. Conclusions Our study demonstrates that the competitiveness of bacteria strongly depends on cell density and community membership, therefore highlighting the fundamental role of microbial interactions in the assembly of soil communities. © The Author(s) 2024
abstractGer	Background Microbial communities are of tremendous importance for ecosystem functioning and yet we know little about the ecological processes driving the assembly of these communities in the environment. Here, we used an unprecedented experimental approach based on the manipulation of physical distance between neighboring cells during soil colonization to determine the role of bacterial interactions in soil community assembly. We hypothesized that experimentally manipulating the physical distance between bacterial cells will modify the interaction strengths leading to differences in microbial community composition, with increasing distance between neighbors favoring poor competitors. Results We found significant differences in both bacterial community diversity, composition and co-occurrence networks after soil colonization that were related to physical distancing. We show that reducing distances between cells resulted in a loss of bacterial diversity, with at least 41% of the dominant OTUs being significantly affected by physical distancing. Our results suggest that physical distancing may differentially modulate competitiveness between neighboring species depending on the taxa present in the community. The mixing of communities that assembled at high and low cell densities did not reveal any “home field advantage” during coalescence. This confirms that the observed differences in competitiveness were due to biotic rather than abiotic filtering. Conclusions Our study demonstrates that the competitiveness of bacteria strongly depends on cell density and community membership, therefore highlighting the fundamental role of microbial interactions in the assembly of soil communities. © The Author(s) 2024
abstract_unstemmed	Background Microbial communities are of tremendous importance for ecosystem functioning and yet we know little about the ecological processes driving the assembly of these communities in the environment. Here, we used an unprecedented experimental approach based on the manipulation of physical distance between neighboring cells during soil colonization to determine the role of bacterial interactions in soil community assembly. We hypothesized that experimentally manipulating the physical distance between bacterial cells will modify the interaction strengths leading to differences in microbial community composition, with increasing distance between neighbors favoring poor competitors. Results We found significant differences in both bacterial community diversity, composition and co-occurrence networks after soil colonization that were related to physical distancing. We show that reducing distances between cells resulted in a loss of bacterial diversity, with at least 41% of the dominant OTUs being significantly affected by physical distancing. Our results suggest that physical distancing may differentially modulate competitiveness between neighboring species depending on the taxa present in the community. The mixing of communities that assembled at high and low cell densities did not reveal any “home field advantage” during coalescence. This confirms that the observed differences in competitiveness were due to biotic rather than abiotic filtering. Conclusions Our study demonstrates that the competitiveness of bacteria strongly depends on cell density and community membership, therefore highlighting the fundamental role of microbial interactions in the assembly of soil communities. © The Author(s) 2024
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title_short	Manipulating the physical distance between cells during soil colonization reveals the importance of biotic interactions in microbial community assembly
url	https://dx.doi.org/10.1186/s40793-024-00559-4
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author2	Huet, Sarah Spor, Aymé Bru, David Breuil, Marie-Christine Philippot, Laurent
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up_date	2024-07-03T14:08:26.286Z
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Our results suggest that physical distancing may differentially modulate competitiveness between neighboring species depending on the taxa present in the community. The mixing of communities that assembled at high and low cell densities did not reveal any “home field advantage” during coalescence. This confirms that the observed differences in competitiveness were due to biotic rather than abiotic filtering. 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Manipulating the physical distance between cells during soil colonization reveals the importance of biotic interactions in microbial community assembly

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