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Protozoa populations are ecosystem engineers that shape prokaryotic community structure and function of the rumen microbial ecosystem
Year:
2021
Source of publication :
ISME Journal
Authors :
Jami, Elie
;
.
Mizrahi, Itzhak
;
.
Volume :
Co-Authors:
  • Ronnie Solomon, 
  • Tanita Wein, 
  • Bar Levy, 
  • Shahar Eshed, 
  • Rotem Dror, 
  • Veronica Reiss, 
  • Tamar Zehavi, 
  • Ori Furman, 
  • Itzhak Mizrahi  
  • Elie Jami
Facilitators :
From page:
0
To page:
0
(
Total pages:
1
)
Abstract:

Unicellular eukaryotes are an integral part of many microbial ecosystems where they interact with their surrounding prokaryotic community—either as predators or as mutualists. Within the rumen, one of the most complex host-associated microbial habitats, ciliate protozoa represent the main micro-eukaryotes, accounting for up to 50% of the microbial biomass. Nonetheless, the extent of the ecological effect of protozoa on the microbial community and on the rumen metabolic output remains largely understudied. To assess the role of protozoa on the rumen ecosystem, we established an in-vitro system in which distinct protozoa sub-communities were introduced to the native rumen prokaryotic community. We show that the different protozoa communities exert a strong and differential impact on the composition of the prokaryotic community, as well as its function including methane production. Furthermore, the presence of protozoa increases prokaryotic diversity with a differential effect on specific bacterial populations such as Gammaproteobacteria, Prevotella and Treponema. Our results suggest that protozoa contribute to the maintenance of prokaryotic diversity in the rumen possibly by mitigating the effect of competitive exclusion between bacterial taxa. Our findings put forward the rumen protozoa populations as potentially important ecosystem engineers for future microbiome modulation strategies.

Note:
Related Files :
Food webs
microbial ecology
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More details
DOI :
10.1038/s41396-021-01170-y
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
57415
Last updated date:
02/03/2022 17:27
Creation date:
31/12/2021 00:39
Scientific Publication
Protozoa populations are ecosystem engineers that shape prokaryotic community structure and function of the rumen microbial ecosystem
  • Ronnie Solomon, 
  • Tanita Wein, 
  • Bar Levy, 
  • Shahar Eshed, 
  • Rotem Dror, 
  • Veronica Reiss, 
  • Tamar Zehavi, 
  • Ori Furman, 
  • Itzhak Mizrahi  
  • Elie Jami
Protozoa populations are ecosystem engineers that shape prokaryotic community structure and function of the rumen microbial ecosystem

Unicellular eukaryotes are an integral part of many microbial ecosystems where they interact with their surrounding prokaryotic community—either as predators or as mutualists. Within the rumen, one of the most complex host-associated microbial habitats, ciliate protozoa represent the main micro-eukaryotes, accounting for up to 50% of the microbial biomass. Nonetheless, the extent of the ecological effect of protozoa on the microbial community and on the rumen metabolic output remains largely understudied. To assess the role of protozoa on the rumen ecosystem, we established an in-vitro system in which distinct protozoa sub-communities were introduced to the native rumen prokaryotic community. We show that the different protozoa communities exert a strong and differential impact on the composition of the prokaryotic community, as well as its function including methane production. Furthermore, the presence of protozoa increases prokaryotic diversity with a differential effect on specific bacterial populations such as Gammaproteobacteria, Prevotella and Treponema. Our results suggest that protozoa contribute to the maintenance of prokaryotic diversity in the rumen possibly by mitigating the effect of competitive exclusion between bacterial taxa. Our findings put forward the rumen protozoa populations as potentially important ecosystem engineers for future microbiome modulation strategies.

Scientific Publication
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