Abstract
Drip irrigation under plastic film mulch is a common agricultural practice used to conserve water. However, compared to traditional flood irrigation with film mulch, this practice limit cotton root development from early flowering stage and may cause premature senescence in cotton. Changes of root will consequently shape the composition and activity of rhizosphere microbial communities, however, the effect of this farming practice on cotton rhizosphere microbiota remains poorly understood. This study investigated rhizosphere bacteria and soil functionality in response to different irrigation practices —including how changes in rhizosphere bacterial diversity alter soil nutrient cycling. Drip irrigation under plastic film mulch was shown to enhance bacterial diversity by lowering the salinity and increasing the soil moisture. However, the reduced root biomass and soluble sugar content of roots decreased potential copiotrophic taxa, such as Bacteroidetes , Firmicutes , and Gamma- proteobacteria , and increased potential oligotrophic taxa, such as Actinobacteria , Acidobacteria , and Armatimonadetes . A core network module was strongly correlated with the functional potential of soil. This module not only contained most of the keystone taxa but also comprised taxa belonging to Planctomycetaceae , Gemmatimonadaceae , Nitrosomonadaceae , and Rhodospirillaceae that were positively associated with functional genes involved in nutrient cycling. Drip irrigation significantly decreased the richness of the core module and reduced the functional potential of soil in the rhizosphere. Overall, this study provides evidence that drip irrigation under plastic film mulch alters the core bacterial network module and suppresses soil nutrient cycling.
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Claims 9
Claim · model-written summary
Drip irrigation under film mulch enhanced cotton rhizosphere bacterial diversity.
- Taxon
- cotton
Gossypium hirsutume1 - Treatment
- Drip irrigation under plastic film mulche0
- Outcome
- bacterial diversitye0
- Direction
- enhancee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drip irrigation under plastic film mulch was shown to enhance bacterial diversity by lowering the salinity and increasing the soil moisture.”
e1“cotton rhizosphere microbiota”
Claim · model-written summary
Drip irrigation lowered soil salinity.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- Drip irrigation under plastic film mulche0
- Outcome
- salinitye0
- Direction
- loweringe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drip irrigation under plastic film mulch was shown to enhance bacterial diversity by lowering the salinity and increasing the soil moisture.”
e1“cotton rhizosphere microbiota”
Claim · model-written summary
Drip irrigation increased soil moisture.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- Drip irrigation under plastic film mulche0
- Outcome
- soil moisturee0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drip irrigation under plastic film mulch was shown to enhance bacterial diversity by lowering the salinity and increasing the soil moisture.”
e1“cotton rhizosphere microbiota”
Claim · model-written summary
Reduced cotton root biomass and soluble sugar content were associated with fewer potential copiotrophic taxa.
- Taxon
- cottonGossypium hirsutume1
- Organ / stage
- rootse0
- Outcome
- potential copiotrophic taxae0
- Direction
- decreasede0
- Qualifier
- reduced root biomass and soluble sugar content of rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the reduced root biomass and soluble sugar content of roots decreased potential copiotrophic taxa, such as Bacteroidetes , Firmicutes , and Gamma- proteobacteria”
e1“cotton rhizosphere microbiota”
Claim · model-written summary
Reduced cotton root biomass and soluble sugar content were associated with more potential oligotrophic taxa.
- Taxon
- cottonGossypium hirsutume1
- Organ / stage
- rootse0
- Outcome
- potential oligotrophic taxae0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the reduced root biomass and soluble sugar content of roots decreased potential copiotrophic taxa, such as Bacteroidetes , Firmicutes , and Gamma- proteobacteria , and increased potential oligotrophic taxa, such as Actinobacteria , Acidobacteria , and Armatimonadetes”
e1“cotton rhizosphere microbiota”
Claim · model-written summary
A core rhizosphere network module was strongly correlated with soil functional potential.
- Taxon
- cottonGossypium hirsutume1
- Outcome
- functional potential of soile0
- Qualifier
- core network modulee0
Not reportedSettingDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A core network module was strongly correlated with the functional potential of soil.”
e1“cotton rhizosphere microbiota”
Claim · model-written summary
The core module contained most keystone taxa and taxa positively associated with nutrient cycling genes.
- Taxon
- cottonGossypium hirsutume1
- Outcome
- keystone taxae0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This module not only contained most of the keystone taxa but also comprised taxa belonging to Planctomycetaceae , Gemmatimonadaceae , Nitrosomonadaceae , and Rhodospirillaceae that were positively associated with functional genes involved in nutrient cycling.”
e1“cotton rhizosphere microbiota”
Claim · model-written summary
Drip irrigation significantly decreased richness of the core rhizosphere module.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- Drip irrigatione0
- Outcome
- richness of the core modulee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drip irrigation significantly decreased the richness of the core module and reduced the functional potential of soil in the rhizosphere.”
e1“cotton rhizosphere microbiota”
Claim · model-written summary
Drip irrigation reduced soil functional potential in the rhizosphere.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- Drip irrigatione0
- Outcome
- functional potential of soil in the rhizospheree0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drip irrigation significantly decreased the richness of the core module and reduced the functional potential of soil in the rhizosphere.”
e1“cotton rhizosphere microbiota”
The same questions in other papers
mulching · soil: biology · Gossypium hirsutum (cotton)Results agree
1 paper in the same direction as this paper
- positive
irrigation · soil: biology · Gossypium hirsutum (cotton)Results agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.