Abstract
The root microbiota plays a crucial role in assisting the plant host in combating various biotic and abiotic stresses, notably drought, which poses a significant threat to global food security. Despite extensive efforts to understand the shifts in rhizosphere and endosphere bacteriomes, there remains a gap in comprehending how drought stress influences the co-occurring network patterns within these compartments and their ecological functional potentials. To address this gap, a pot experiment was conducted with two treatments: continuous flooding as a control and drought treatment. Bulk soil, rhizosphere, and endosphere samples were collected and subjected to high-throughput sequencing and bioinformatics analysis. The results revealed that drought stress significantly reduced the rice biomass but increased the Shannon diversity index in both the rhizosphere and endosphere bacterial communities with no observable effect on richness across compartments. Additionally, drought treatment markedly altered the community structure and bacterial assemblages in these compartments, resulting in the specific enrichment of Actinobacteriota, Gemmatimonadetes, and Patescibacteria, while Bacteroidetes and Firmicutes were depleted in the rhizosphere and endosphere. Furthermore, drought heightened the complexity of the co-occurring networks and the proportions of positive links across all sampling compartments; this effect was accompanied by an increase in the number of connectors in the bulk soil and rhizosphere, as well as module hubs in the rhizosphere. Functional potential prediction indicated that drought stress significantly altered multiple potential ecological functions across all sampling compartments, particularly enriching functions related to the oxidation of sulfur, manganese, and hydrogen in the bulk soil, while functions associated with iron oxidation were significantly depleted in the rhizosphere. Overall, our results demonstrate that under drought stress, rice may specifically enrich certain bacterial taxa and enhance their positive interactions within its root system to improve adaptation.
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Claims 15
Claim · model-written summary
Drought significantly reduced rice biomass.
- Taxon
- rice
Oryza sativae0 - Treatment
- drought stresse0
- Outcome
- rice biomasse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought stress significantly reduced the rice biomass but increased the Shannon diversity index in both the rhizosphere and endosphere bacterial communities with no observable effect on richness across compartments”
Claim · model-written summary
Drought increased the Shannon diversity index in rhizosphere and endosphere bacteria.
- Taxon
- riceOryza sativae0
- Treatment
- drought stresse0
- Interactor
- bacterial communitiese0symbiont
- Outcome
- Shannon diversity indexe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought stress significantly reduced the rice biomass but increased the Shannon diversity index in both the rhizosphere and endosphere bacterial communities with no observable effect on richness across compartments”
Claim · model-written summary
Drought had no observable effect on bacterial richness across compartments.
- Taxon
- riceOryza sativae0
- Treatment
- drought stresse0
- Interactor
- bacterial communitiese0symbiont
- Outcome
- richnesse0
- Direction
- no observable effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought stress significantly reduced the rice biomass but increased the Shannon diversity index in both the rhizosphere and endosphere bacterial communities with no observable effect on richness across compartments”
Claim · model-written summary
Drought altered bacterial community structure and assemblages.
- Taxon
- riceOryza sativat0
- Treatment
- drought treatmente0
- Interactor
- bacteriale0symbiont
- Outcome
- community structure and bacterial assemblagese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought treatment markedly altered the community structure and bacterial assemblages in these compartments”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Drought enrichment Actinobacteriota in rhizosphere and endosphere.
- Taxon
- riceOryza sativat0
- Treatment
- droughtt0
- Interactor
- ActinobacteriotaActinomycetotae0symbiont
- Outcome
- Actinobacteriotae0
- Direction
- enrichmente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“specific enrichment of Actinobacteriota, Gemmatimonadetes, and Patescibacteria, while Bacteroidetes and Firmicutes were depleted in the rhizosphere and endosphere”
t0“Drought Stress Increases the Complexity of the Bacterial Network in the Rhizosphere and Endosphere of Rice (Oryza sativa L.)”
Claim · model-written summary
Drought enrichment Gemmatimonadetes in rhizosphere and endosphere.
- Taxon
- riceOryza sativat0
- Treatment
- droughtt0
- Interactor
- GemmatimonadetesGemmatimonadotae0symbiont
- Outcome
- Gemmatimonadetese0
- Direction
- enrichmente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“specific enrichment of Actinobacteriota, Gemmatimonadetes, and Patescibacteria, while Bacteroidetes and Firmicutes were depleted in the rhizosphere and endosphere”
t0“Drought Stress Increases the Complexity of the Bacterial Network in the Rhizosphere and Endosphere of Rice (Oryza sativa L.)”
Claim · model-written summary
Drought enrichment Patescibacteria in rhizosphere and endosphere.
- Taxon
- riceOryza sativat0
- Treatment
- droughtt0
- Interactor
- PatescibacteriaPatescibacteria groupe0symbiont
- Outcome
- Patescibacteriae0
- Direction
- enrichmente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“specific enrichment of Actinobacteriota, Gemmatimonadetes, and Patescibacteria, while Bacteroidetes and Firmicutes were depleted in the rhizosphere and endosphere”
t0“Drought Stress Increases the Complexity of the Bacterial Network in the Rhizosphere and Endosphere of Rice (Oryza sativa L.)”
Claim · model-written summary
Drought depleted Bacteroidetes in rhizosphere and endosphere.
- Taxon
- riceOryza sativat0
- Treatment
- droughtt0
- Interactor
- BacteroidetesBacteroidotae0symbiont
- Outcome
- Bacteroidetese0
- Direction
- depletede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“specific enrichment of Actinobacteriota, Gemmatimonadetes, and Patescibacteria, while Bacteroidetes and Firmicutes were depleted in the rhizosphere and endosphere”
t0“Drought Stress Increases the Complexity of the Bacterial Network in the Rhizosphere and Endosphere of Rice (Oryza sativa L.)”
Claim · model-written summary
Drought depleted Firmicutes in rhizosphere and endosphere.
- Taxon
- riceOryza sativat0
- Treatment
- droughtt0
- Outcome
- Firmicutese0
- Direction
- depletede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“specific enrichment of Actinobacteriota, Gemmatimonadetes, and Patescibacteria, while Bacteroidetes and Firmicutes were depleted in the rhizosphere and endosphere”
t0“Drought Stress Increases the Complexity of the Bacterial Network in the Rhizosphere and Endosphere of Rice (Oryza sativa L.)”
Claim · model-written summary
Drought heightened bacterial network complexity and positive link proportions.
- Taxon
- riceOryza sativat0
- Treatment
- droughte0
- Outcome
- complexity of the co-occurring networks and the proportions of positive linkse0
- Direction
- heightenede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought heightened the complexity of the co-occurring networks and the proportions of positive links across all sampling compartments”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Drought increased connectors in bulk soil and rhizosphere and module hubs in rhizosphere.
- Taxon
- riceOryza sativat0
- Treatment
- Drought Stresst0
- Outcome
- number of connectors in the bulk soil and rhizosphere, as well as module hubs in the rhizospheree0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an increase in the number of connectors in the bulk soil and rhizosphere, as well as module hubs in the rhizosphere”
t0“Drought Stress Increases the Complexity of the Bacterial Network in the Rhizosphere and Endosphere of Rice (Oryza sativa L.)”
Claim · model-written summary
Drought significantly altered predicted ecological functions across compartments.
- Taxon
- riceOryza sativat0
- Treatment
- drought stresse0
- Outcome
- multiple potential ecological functionse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought stress significantly altered multiple potential ecological functions across all sampling compartments”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Drought enriched predicted sulfur, manganese and hydrogen oxidation functions in bulk soil.
- Taxon
- riceOryza sativat0
- Treatment
- Drought Stresst0
- Outcome
- functions related to the oxidation of sulfur, manganese, and hydrogene0
- Direction
- enrichinge0
- Setting
- bulk soile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“enriching functions related to the oxidation of sulfur, manganese, and hydrogen in the bulk soil”
t0“Drought Stress Increases the Complexity of the Bacterial Network in the Rhizosphere and Endosphere of Rice (Oryza sativa L.)”
Claim · model-written summary
Drought depleted predicted iron oxidation function in the rhizosphere.
- Taxon
- riceOryza sativat0
- Treatment
- Drought Stresst0
- Outcome
- functions associated with iron oxidatione0
- Direction
- depletede0
- Setting
- rhizospheree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“functions associated with iron oxidation were significantly depleted in the rhizosphere”
t0“Drought Stress Increases the Complexity of the Bacterial Network in the Rhizosphere and Endosphere of Rice (Oryza sativa L.)”
Claim · model-written summary
The authors interpret rice as enriching certain bacteria and their positive interactions under drought.
- Taxon
- riceOryza sativae0
- Interactor
- bacterial taxae0symbiont
- Outcome
- improve adaptatione0
- Qualifier
- positive interactions within its root systeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under drought stress, rice may specifically enrich certain bacterial taxa and enhance their positive interactions within its root system to improve adaptation”
The same questions in other papers
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