Abstract
In this study, High throughput sequencing was used to analyze the effects of different vegetable rotations on the rhizosphere bacterial diversity and community structure in a substrate that was used for continuous tomato cropping (CK). The vegetable rotations tested were cabbage/tomato (B), kidney bean/tomato (D), and celery/tomato (Q). The results revealed that the substrate bacterial diversity and richness of each crop rotation were higher than those of CK. The highest bacterial diversity was found in the B substrate, followed by the Q and D substrates. Further comparison showed that the rhizosphere bacterial community structure of Q substrate was significantly different to that of CK. Compared with the CK, the Q substrate had a significantly higher relative abundance of several dominant microflora, such as Acidobacteria, Chloroflexi, and Firmicutes. Additionally, the Q rotation significantly increased the abundance of beneficial bacteria, such as Actinobacteria_unclassified and Anaerolineaceae_unclassified. A redundancy analysis showed that Most dominant bacteria correlated positively with the substrate pH, total N, and alkali-hydrolyzable N but negatively with the available P, available K, total P, total K, and organic matter contents and substrate EC. The substrates after crop rotation improved the growth and physiological condition of the subsequent tomato plants, among which those from the Q rotation performed the best. Therefore, celery rotation not only increased the richness and diversity of bacterial communities in the substrate but also significantly increased the richness of the beneficial bacterial communities, allowing better maintenance of the substrate microenvironment for the healthy growth of crops.
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Claims 8
Claim · model-written summary
Each vegetable rotation increased substrate bacterial diversity and richness relative to continuous tomato cropping.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- each crop rotatione0
- Outcome
- substrate bacterial diversity and richnesse0
- Direction
- highere0
- Comparator
- CKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results revealed that the substrate bacterial diversity and richness of each crop rotation were higher than those of CK”
t0“different vegetable rotations on the rhizosphere bacterial community and tomato growth”
Claim · model-written summary
Cabbage/tomato rotation had the highest bacterial diversity, followed by celery/tomato and kidney bean/tomato.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- bacterial diversitye0
- Direction
- higheste0
Not reportedMaterial
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest bacterial diversity was found in the B substrate, followed by the Q and D substrates”
t0“different vegetable rotations on the rhizosphere bacterial community and tomato growth”
Claim · model-written summary
Celery/tomato rotation changed rhizosphere bacterial community structure relative to continuous tomato cropping.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Q substratee0
- Outcome
- rhizosphere bacterial community structuree0
- Direction
- differente0
- Comparator
- CKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the rhizosphere bacterial community structure of Q substrate was significantly different to that of CK”
t0“different vegetable rotations on the rhizosphere bacterial community and tomato growth”
Claim · model-written summary
Celery/tomato rotation increased the relative abundance of Acidobacteria, Chloroflexi, and Firmicutes.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Q substratee0
- Outcome
- relative abundance of several dominant microflora, such as Acidobacteria, Chloroflexi, and Firmicutese0
- Direction
- highere0
- Comparator
- CKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the CK, the Q substrate had a significantly higher relative abundance of several dominant microflora, such as Acidobacteria, Chloroflexi, and Firmicutes”
t0“different vegetable rotations on the rhizosphere bacterial community and tomato growth”
Claim · model-written summary
Celery/tomato rotation increased beneficial Actinobacteria_unclassified and Anaerolineaceae_unclassified.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Q rotatione0
- Outcome
- abundance of beneficial bacteria, such as Actinobacteria_unclassified and Anaerolineaceae_unclassifiede0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the Q rotation significantly increased the abundance of beneficial bacteria, such as Actinobacteria_unclassified and Anaerolineaceae_unclassified”
t0“different vegetable rotations on the rhizosphere bacterial community and tomato growth”
Claim · model-written summary
Most dominant bacteria were positively correlated with substrate pH, total N, and alkali-hydrolyzable N.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- Most dominant bacteriae0
- Direction
- positivelye0
- Setting
- substratee0
Not reportedCompound
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Most dominant bacteria correlated positively with the substrate pH, total N, and alkali-hydrolyzable N”
t0“different vegetable rotations on the rhizosphere bacterial community and tomato growth”
Claim · model-written summary
Most dominant bacteria were negatively correlated with available P, available K, total P, total K, organic matter, and substrate EC.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- substrate ECe0
- Direction
- negativelye0
- Setting
- substratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but negatively with the available P, available K, total P, total K, and organic matter contents and substrate EC”
t0“different vegetable rotations on the rhizosphere bacterial community and tomato growth”
Claim · model-written summary
Crop-rotation substrates improved growth and physiological condition of subsequent tomato plants; celery rotation performed best.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- substrates after crop rotatione0
- Outcome
- growth and physiological conditione0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The substrates after crop rotation improved the growth and physiological condition of the subsequent tomato plants, among which those from the Q rotation performed the best”
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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.