Abstract
Introduction: Crop rotation promotes ecological effects and production by regulating belowground processes, particularly the shaping of the rhizosphere soil microbiome. Rhizosphere metabolites are a key driver of belowground processes and play a crucial role in shaping soil microbial community composition. However, the rhizosphere metabolites of different potato rotations have rarely been reported, and the regulation of key metabolites on the rhizosphere soil microbiome remains unclear. Methods: )-potato rotation (V-P), to determine rhizosphere soil metabolites and analyze defense metabolites, and assess the soil bacterial and fungal diversity and community composition. Results: Compared to monoculture, the potato rotations had positive effects on growth and yield. Potato rotations had more primary metabolites, such as amino acids and carbohydrates and conjugates, but significantly reduced secondary metabolites with defensive functions in rhizosphere soils including phenols and other benzene derivatives, flavonoids, alkaloids and other N-containing compounds, and terpenoids. Potato rotation systems supported higher diversity of bacteria and fungi and enriched beneficial bacteria such as biocontrol, nitrogen fixation, C degradation, denitrification, and pollutant degradation bacteria, while suppressing pathogenic fungi in the rhizosphere soils. Rhizosphere soil metabolites strongly correlated with the microbial community composition. The secondary metabolites, which are predominantly alkaloids, terpenoids, and flavonoids, exerted a dominant regulatory effect on the composition of soil microbial community. Discussion: These results demonstrate the important regulation of rhizosphere metabolites on soil microbial community composition, deepening our understanding of the benefits of crop rotation via the belowground effect.
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Claims 8
Claim · model-written summary
Potato rotations improved growth and yield relative to monoculture.
- Taxon
- potato
Solanum tuberosume0 - Treatment
- potato rotationse0
- Outcome
- growth and yielde0
- Direction
- positive effectse0
- Comparator
- monoculturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to monoculture, the potato rotations had positive effects on growth and yield.”
Claim · model-written summary
Potato rotations increased primary rhizosphere metabolites including amino acids and carbohydrates.
- Taxon
- PotatoSolanum tuberosume0
- Treatment
- Potato rotationse0
- Outcome
- primary metabolites, such as amino acids and carbohydrates and conjugatese0
- Direction
- moree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potato rotations had more primary metabolites, such as amino acids and carbohydrates and conjugates”
Claim · model-written summary
Potato rotations significantly reduced defensive secondary metabolites in rhizosphere soil.
- Taxon
- PotatoSolanum tuberosume1
- Treatment
- Potato rotationse1
- Outcome
- secondary metabolites with defensive functions in rhizosphere soilse0
- Direction
- reducede0
- Qualifier
- phenols and other benzene derivatives, flavonoids, alkaloids and other N-containing compounds, and terpenoidse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significantly reduced secondary metabolites with defensive functions in rhizosphere soils including phenols and other benzene derivatives, flavonoids, alkaloids and other N-containing compounds, and terpenoids”
e1“Potato rotations had more primary metabolites”
Claim · model-written summary
Potato rotations supported higher rhizosphere bacterial and fungal diversity.
- Taxon
- PotatoSolanum tuberosume0
- Treatment
- Potato rotation systemse0
- Outcome
- diversity of bacteria and fungie0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potato rotation systems supported higher diversity of bacteria and fungi”
Claim · model-written summary
Potato rotations enriched beneficial rhizosphere bacteria.
- Taxon
- PotatoSolanum tuberosume1
- Treatment
- Potato rotation systemse1
- Outcome
- beneficial bacteriae0
- Direction
- enrichede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“enriched beneficial bacteria such as biocontrol, nitrogen fixation, C degradation, denitrification, and pollutant degradation bacteria”
e1“Potato rotation systems supported higher diversity of bacteria and fungi”
Claim · model-written summary
Potato rotations suppressed pathogenic fungi in rhizosphere soil.
- Taxon
- PotatoSolanum tuberosume1
- Treatment
- Potato rotation systemse1
- Interactor
- pathogenic fungie0pathogen
- Outcome
- pathogenic fungi in the rhizosphere soilse0
- Direction
- suppressinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“suppressing pathogenic fungi in the rhizosphere soils”
e1“Potato rotation systems supported higher diversity of bacteria and fungi”
Claim · model-written summary
Rhizosphere metabolites strongly correlated with microbial community composition.
- Taxon
- potatoSolanum tuberosumt0
- Compound
- Rhizosphere soil metabolitese0
- Outcome
- microbial community compositione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rhizosphere soil metabolites strongly correlated with the microbial community composition.”
t0“potato rhizosphere soil”
Claim · model-written summary
Secondary metabolites, mainly alkaloids, terpenoids and flavonoids, dominated regulation of microbial community composition.
- Taxon
- potatoSolanum tuberosumt0
- Compound
- secondary metabolitese0
- Outcome
- composition of soil microbial communitye0
- Qualifier
- predominantly alkaloids, terpenoids, and flavonoidse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The secondary metabolites, which are predominantly alkaloids, terpenoids, and flavonoids, exerted a dominant regulatory effect on the composition of soil microbial community.”
t0“potato rhizosphere soil”
The same questions in other papers
rotation · disease · Solanum tuberosum (potato)Positive and negative results
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- negative
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25 papers in the same direction as this paper · 13 in the opposite direction · 3 reporting no difference from an alternative
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See all 42 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.