Abstract
Continuous potato cropping in semi-arid regions, which are vulnerable to erosion, reduces tuber yields and leads to a decline in soil quality. This research delves into the impact of forage cultivation on soil bacterial and archaeal communities and the associated hazard-related virulence genes and antibiotic resistance genes (ARGs) within potato cropping systems. The study reveals that distinct crop rotation schemes significantly alter soil physicochemical properties. Compared to non-potato cultivation, continuous potato cropping substantially reduces soil organic carbon from 31.9 g kg − 1 to 15.7 g kg − 1 and total nitrogen from 3.7 g kg − 1 to 1.6 g kg − 1 , indicating a notable deterioration in soil fertility. Among the ten identified phyla, Proteobacteria demonstrates the highest relative abundance, from 34.6% to 38.4%, closely followed by Actinobacteria, ranging from 20.5% to 36.0%. These two phyla likely play a crucial role in maintaining soil health. Moreover, continuous potato cultivation (CPC) results in more specific ARGs than non-potato cultivation (NPC). This phenomenon implies that CPC may select for particular resistance traits within the soil microbiome, potentially due to changes in the composition of the soil microbiota. Forage crops (oats or a mixture of oats and peas) exhibit varying effects on ARGs at different growth stages. The differences observed between the flowering and maturity stages of oats suggest that plant growth and the composition of root exudates can influence microbial communities and the prevalence of ARGs. The Mantel test further indicates that specific soil properties impact the abundance of certain microbial taxa and determine the expression of key functional genes, including those associated with antibiotic resistance. These findings underscore the intricate interactions among microbial communities, genes, and soil health, providing essential guidance for formulating agricultural practices to manage soil health and mitigating problems such as antibiotic resistance in continuously cropped soils. Importantly, this study highlights the significant benefits of crop diversification, primarily through the incorporation of forage crops, in safeguarding soil health and maintaining microbial diversity within potato cropping systems. The results offer valuable perspectives for developing sustainable agricultural strategies, which can enhance soil fertility and promote ecosystem stability in semi-arid regions. • Continuous potato cropping decreases soil fertility with reduced SOC and TN. • Oat cultivation enhances mineral nitrogen availability and soil properties. • Forage cultivation alters the structure of soil archaeal communities. • 20 abundant antibiotic-resistance genes significantly vary across cultivations.
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Claims 12
Claim · model-written summary
Crop rotation schemes significantly altered soil physicochemical properties.
Not reportedTaxonDirection
Verbatim
e0“distinct crop rotation schemes significantly alter soil physicochemical properties”
Claim · model-written summary
Continuous potato cropping reduced soil organic carbon from 31.9 to 15.7 g kg − 1 versus non-potato cultivation.
- Taxon
- potato
Solanum tuberosume0 - Treatment
- continuous potato croppinge0
- Outcome
- soil organic carbone0
- Direction
- reducese0
- Value
- 15.7 g kg − 1e0
- Qualifier
- 31.9 g kg − 1e0
- Comparator
- non-potato cultivatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to non-potato cultivation, continuous potato cropping substantially reduces soil organic carbon from 31.9 g kg − 1 to 15.7 g kg − 1”
Claim · model-written summary
Continuous potato cropping reduced soil total nitrogen from 3.7 to 1.6 g kg − 1.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- continuous potato croppinge0
- Outcome
- total nitrogene0
- Direction
- reducese0
- Value
- 1.6 g kg − 1e0
- Qualifier
- 3.7 g kg − 1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“continuous potato cropping substantially reduces soil organic carbon from 31.9 g kg − 1 to 15.7 g kg − 1 and total nitrogen from 3.7 g kg − 1 to 1.6 g kg − 1”
Claim · model-written summary
Proteobacteria had the highest relative abundance, 34.6% to 38.4%.
- Outcome
- Proteobacteria demonstrates the highest relative abundancee0
- Direction
- higheste0
- Value
- 34.6% to 38.4%e0
Not reportedTaxon
Verbatim
e0“Proteobacteria demonstrates the highest relative abundance, from 34.6% to 38.4%”
Claim · model-written summary
Actinobacteria abundance ranged from 20.5% to 36.0%.
Not reportedTaxonDirection
Verbatim
e0“Actinobacteria, ranging from 20.5% to 36.0%”
Claim · model-written summary
Continuous potato cropping had more specific antibiotic resistance genes than non-potato cultivation.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- continuous potato cultivation (CPC)e0
- Outcome
- specific ARGse0
- Direction
- moree0
- Comparator
- non-potato cultivation (NPC)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“continuous potato cultivation (CPC) results in more specific ARGs than non-potato cultivation (NPC)”
Claim · model-written summary
Oat or oat-pea forage crops had varying effects on antibiotic resistance genes by growth stage.
Not reportedTaxonDirection
Verbatim
e0“Forage crops (oats or a mixture of oats and peas) exhibit varying effects on ARGs at different growth stages”
Claim · model-written summary
Soil properties were associated with abundance of certain microbial taxa.
Not reportedTaxonDirection
Verbatim
e0“specific soil properties impact the abundance of certain microbial taxa”
Claim · model-written summary
Soil properties were associated with expression of functional genes including antibiotic resistance genes.
Not reportedTaxonDirection
Verbatim
e0“specific soil properties impact the abundance of certain microbial taxa and determine the expression of key functional genes, including those associated with antibiotic resistance”
Claim · model-written summary
Oat cultivation enhanced mineral nitrogen availability and soil properties.
- Treatment
- Oat cultivatione0
- Outcome
- mineral nitrogen availability and soil propertiese0
- Direction
- enhancese0
Not reportedTaxon
Verbatim
e0“Oat cultivation enhances mineral nitrogen availability and soil properties.”
Claim · model-written summary
Forage cultivation altered soil archaeal community structure.
Not reportedTaxonDirection
Verbatim
e0“Forage cultivation alters the structure of soil archaeal communities.”
Claim · model-written summary
Twenty abundant antibiotic resistance genes varied significantly across cultivation systems.
Not reportedTaxonDirection
Verbatim
e0“20 abundant antibiotic-resistance genes significantly vary across cultivations.”
The same questions in other papers
rotation · soil: chemistry · Solanum tuberosum (potato)Positive and negative results
1 in the opposite direction
- positive
rotation · nutrient: content · Solanum tuberosum (potato)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
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.