Abstract
Intercropping can enable more efficient resource use and increase yield. Most current studies focus on the correlation between soil nutrients and crop yield under intercropping conditions. However, the mechanisms related to root exudates and soil nutrients remain unclear. Therefore, this study explored the correlation between rhizosphere soil nutrients and root exudates in sugarcane/peanut intercropping. Root extracts, root exudates, rhizosphere soil enzyme activities, and soil nutrients were analyzed and compared in monocultured and intercropped peanut and sugarcane at different growth stages. The root metabolites were annotated using the Kyoto Encyclopedia of Genes and Genomes pathways to further identify the connection between soil nutrients and root exudates. The effects of intercropping differed in peanut and sugarcane at different growth stages, and the difference between podding and pod-filling stages was significant. Intercropping generally had a great effect on peanut; it not only significantly increased the organic acid, soluble sugars, and phenolic acids in root exudates and extracts from peanuts, but also significantly increased rhizosphere soil enzyme activities and soil nutrient levels. Intercropping peanuts promoted fumaric acid secretion from roots and significantly affected the metabolic pathways of alanine, aspartate, and glutamate. Sugarcane/peanut intercropping can increase root exudates and effectively improve soil nutrients. The changes in soil nutrients are closely related to the effects of fumaric acid on alanine, aspartate, and glutamate metabolism.
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Claims 8
Claim · model-written summary
Intercropping effects on peanut and sugarcane differed by growth stage, significantly between podding and pod-filling.
- Taxon
- peanut and sugarcanee0
- Organ / stage
- podding and pod-filling stagese0
- Outcome
- effects of intercroppinge0
Not reportedDirection
Verbatim
e0“The effects of intercropping differed in peanut and sugarcane at different growth stages, and the difference between podding and pod-filling stages was significant.”
Claim · model-written summary
Intercropping significantly increased organic acid, soluble sugars, and phenolic acids in peanut root exudates and extracts.
- Taxon
- peanuts
Arachis hypogaeae0 - Outcome
- organic acid, soluble sugars, and phenolic acids in root exudates and extractse0
- Direction
- increasede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it not only significantly increased the organic acid, soluble sugars, and phenolic acids in root exudates and extracts from peanuts”
Claim · model-written summary
Intercropping significantly increased peanut rhizosphere soil enzyme activities and nutrient levels.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- Intercroppingt0
- Outcome
- rhizosphere soil enzyme activities and soil nutrient levelse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but also significantly increased rhizosphere soil enzyme activities and soil nutrient levels.”
t0“Sugarcane/Peanut Intercropping”
Claim · model-written summary
Intercropping promoted fumaric acid secretion from peanut roots.
- Taxon
- peanutsArachis hypogaeae0
- Treatment
- Intercroppinge0
- Outcome
- fumaric acid secretion from rootse0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intercropping peanuts promoted fumaric acid secretion from roots”
Claim · model-written summary
Intercropping significantly affected peanut alanine, aspartate, and glutamate metabolic pathways.
- Taxon
- peanutsArachis hypogaeae0
- Treatment
- Intercroppinge0
- Outcome
- metabolic pathways of alanine, aspartate, and glutamatee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intercropping peanuts promoted fumaric acid secretion from roots and significantly affected the metabolic pathways of alanine, aspartate, and glutamate.”
Claim · model-written summary
Sugarcane/peanut intercropping increased root exudates.
Not reportedComparator
Verbatim
e0“Sugarcane/peanut intercropping can increase root exudates”
Claim · model-written summary
Sugarcane/peanut intercropping improved soil nutrients.
Not reportedComparator
Verbatim
e0“Sugarcane/peanut intercropping can increase root exudates and effectively improve soil nutrients.”
Claim · model-written summary
Soil nutrient changes were closely related to fumaric acid effects on alanine, aspartate, and glutamate metabolism.
Not reportedDirection
Verbatim
e0“The changes in soil nutrients are closely related to the effects of fumaric acid on alanine, aspartate, and glutamate metabolism.”
t0“Sugarcane/Peanut Intercropping”
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