Paper · 2026 · Plant Science

Optimizing the rhizosphere to enhance photosynthesis and functional traits of Cyperus esculentus in saline-alkali soils: A comparison between biochemical amendments and salt-tolerant plant intercropping

Xin Shen; Weiyi Zhou; Xiangyi Li; et al.

11
claims
25
verbatim quotes
1
citations
3
research areas
✓
Open access · cc-by-nc-nd

Abstract

Soil salinization is a critical barrier to agriculture, especially in arid regions like Xinjiang, where it restricts crop growth. Cyperus esculentus, a moderately salt-tolerant oilseed crop with ecological and economic value, faces cultivation challenges under high saline-alkali soils. Although biological strategies have been proposed to alleviate salt stress, their effects on the crop's photosynthetic performance remain insufficiently studied. This study evaluated two approaches-biochemical amendments and intercropping with salt-tolerant plants-to assess their impact on soil properties and functional traits of C. esculentus. Microbial agents and humic acid improved the rhizosphere by reducing soil pH by 10-14 % and increasing available nitrogen by 29-51 %, thereby enhancing chlorophyll a synthesis and leaf nitrogen content. By lowering the salt content of the soil and possibly boosting beneficial microbial activity, intercropping enhanced the root environment. It increased net photosynthetic rates by 20-22 % and suggested better electron transfer. Through root interactions with companion plants, nutrient uptake was further enhanced. In comparison to CK, both treatments greatly boosted biomass, with leaf biomass increasing by 18-27 % at maturity. Although our data point to distinct primary pathways, intercropping was mainly linked to synergistic optimization of morphology and photosystem electron transport, whereas biochemical amendments were linked to improved nutrient status and photosynthetic efficiency, suggesting potential physiological stability. These findings provide insight into the physiological adaptation of C. esculentus under salinity and offer practical guidance for its sustainable cultivation in saline-alkali soils.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 11

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Microbial agents and humic acid reduced rhizosphere soil pH by 10-14%.

Taxon
Cyperus esculentusCyperus esculentust0
Treatment
Microbial agents and humic acide0
Outcome
soil pHe0
Direction
reducinge0
Value
10-14 %e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cyperus esculentus
Cyperus esculentus · TaxonUser:Blahedo · CC BY-SA 2.5 · Wikimedia Commons ↗

Verbatim

e0

“Microbial agents and humic acid improved the rhizosphere by reducing soil pH by 10-14 %”

✓ located verbatim in the source · abstract, characters 634–721 · show in text ↑
t0

“Cyperus esculentus”

✓ located verbatim in the source · title, characters 78–96 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Microbial agents and humic acid increased available nitrogen by 29-51%.

Taxon
Cyperus esculentusCyperus esculentust0
Treatment
Microbial agents and humic acide0
Outcome
available nitrogene0
Direction
increasinge0
Value
29-51 %e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cyperus esculentus
Cyperus esculentus · TaxonUser:Blahedo · CC BY-SA 2.5 · Wikimedia Commons ↗

Verbatim

e0

“Microbial agents and humic acid improved the rhizosphere by reducing soil pH by 10-14 % and increasing available nitrogen by 29-51 %”

✓ located verbatim in the source · abstract, characters 634–766 · show in text ↑
t0

“Cyperus esculentus”

✓ located verbatim in the source · title, characters 78–96 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The amendments enhanced chlorophyll a synthesis and leaf nitrogen content.

Taxon
Cyperus esculentusCyperus esculentust0
Treatment
Microbial agents and humic acide0
Outcome
chlorophyll a synthesis and leaf nitrogen contente0
Direction
enhancinge0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cyperus esculentus
Cyperus esculentus · TaxonUser:Blahedo · CC BY-SA 2.5 · Wikimedia Commons ↗

Verbatim

e0

“Microbial agents and humic acid improved the rhizosphere by reducing soil pH by 10-14 % and increasing available nitrogen by 29-51 %, thereby enhancing chlorophyll a synthesis and leaf nitrogen content.”

✓ located verbatim in the source · abstract, characters 634–836 · show in text ↑
t0

“Cyperus esculentus”

✓ located verbatim in the source · title, characters 78–96 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Intercropping lowered soil salt content.

Taxon
Cyperus esculentusCyperus esculentust0
Treatment
intercroppinge0
Outcome
salt content of the soile0
Direction
loweringe0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cyperus esculentus
Cyperus esculentus · TaxonUser:Blahedo · CC BY-SA 2.5 · Wikimedia Commons ↗

Verbatim

e0

“By lowering the salt content of the soil and possibly boosting beneficial microbial activity, intercropping enhanced the root environment.”

✓ located verbatim in the source · abstract, characters 837–975 · show in text ↑
t0

“Cyperus esculentus”

✓ located verbatim in the source · title, characters 78–96 · show in text ↑
Mechanismauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

Intercropping possibly boosted beneficial microbial activity.

Taxon
Cyperus esculentusCyperus esculentust0
Treatment
intercroppinge0
Outcome
root environmente0
Qualifier
possibly boosting beneficial microbial activitye0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cyperus esculentus
Cyperus esculentus · TaxonUser:Blahedo · CC BY-SA 2.5 · Wikimedia Commons ↗

Verbatim

e0

“possibly boosting beneficial microbial activity, intercropping enhanced the root environment.”

✓ located verbatim in the source · abstract, characters 882–975 · show in text ↑
t0

“Cyperus esculentus”

✓ located verbatim in the source · title, characters 78–96 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Intercropping increased net photosynthetic rates by 20-22%.

Taxon
Cyperus esculentusCyperus esculentust0
Treatment
intercroppinge1
Outcome
net photosynthetic ratese0
Direction
increasede0
Value
20-22 %e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cyperus esculentus
Cyperus esculentus · TaxonUser:Blahedo · CC BY-SA 2.5 · Wikimedia Commons ↗

Verbatim

e0

“It increased net photosynthetic rates by 20-22 %”

✓ located verbatim in the source · abstract, characters 976–1024 · show in text ↑
e1

“intercropping enhanced the root environment”

✓ located verbatim in the source · abstract, characters 931–974 · show in text ↑
t0

“Cyperus esculentus”

✓ located verbatim in the source · title, characters 78–96 · show in text ↑
Intervention effectauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

Intercropping suggested better electron transfer.

Taxon
Cyperus esculentusCyperus esculentust0
Treatment
intercroppinge1
Outcome
electron transfere0
Direction
bettere0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cyperus esculentus
Cyperus esculentus · TaxonUser:Blahedo · CC BY-SA 2.5 · Wikimedia Commons ↗

Verbatim

e0

“suggested better electron transfer.”

✓ located verbatim in the source · abstract, characters 1029–1064 · show in text ↑
e1

“intercropping enhanced the root environment”

✓ located verbatim in the source · abstract, characters 931–974 · show in text ↑
t0

“Cyperus esculentus”

✓ located verbatim in the source · title, characters 78–96 · show in text ↑
Mechanismauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

Root interactions with companion plants enhanced nutrient uptake.

Taxon
Cyperus esculentusCyperus esculentust0
Interactor
companion plantse0other
Outcome
nutrient uptakee0
Qualifier
root interactions with companion plantse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cyperus esculentus
Cyperus esculentus · TaxonUser:Blahedo · CC BY-SA 2.5 · Wikimedia Commons ↗

Verbatim

e0

“Through root interactions with companion plants, nutrient uptake was further enhanced.”

✓ located verbatim in the source · abstract, characters 1065–1151 · show in text ↑
t0

“Cyperus esculentus”

✓ located verbatim in the source · title, characters 78–96 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Both treatments increased leaf biomass by 18-27% at maturity versus CK.

Taxon
Cyperus esculentusCyperus esculentust0
Organ / stage
leafe0
Treatment
biochemical amendments and intercropping with salt-tolerant plantse1
Outcome
leaf biomasse0
Direction
increasinge0
Value
18-27 %e0
Qualifier
at maturitye0
Comparator
CKe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cyperus esculentus
Cyperus esculentus · TaxonUser:Blahedo · CC BY-SA 2.5 · Wikimedia Commons ↗

Verbatim

e0

“In comparison to CK, both treatments greatly boosted biomass, with leaf biomass increasing by 18-27 % at maturity.”

✓ located verbatim in the source · abstract, characters 1152–1266 · show in text ↑
e1

“biochemical amendments and intercropping with salt-tolerant plants”

✓ located verbatim in the source · abstract, characters 485–551 · show in text ↑
t0

“Cyperus esculentus”

✓ located verbatim in the source · title, characters 78–96 · show in text ↑
Associationauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

Intercropping was linked to morphology and photosystem electron transport optimization.

Taxon
Cyperus esculentusCyperus esculentust0
Treatment
intercroppinge0
Outcome
synergistic optimization of morphology and photosystem electron transporte0

Not reportedDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cyperus esculentus
Cyperus esculentus · TaxonUser:Blahedo · CC BY-SA 2.5 · Wikimedia Commons ↗

Verbatim

e0

“intercropping was mainly linked to synergistic optimization of morphology and photosystem electron transport”

✓ located verbatim in the source · abstract, characters 1321–1429 · show in text ↑
t0

“Cyperus esculentus”

✓ located verbatim in the source · title, characters 78–96 · show in text ↑
Associationauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

Biochemical amendments were linked to improved nutrient status and photosynthetic efficiency.

Taxon
Cyperus esculentusCyperus esculentust0
Treatment
biochemical amendmentse0
Outcome
nutrient status and photosynthetic efficiencye0
Direction
improvede0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cyperus esculentus
Cyperus esculentus · TaxonUser:Blahedo · CC BY-SA 2.5 · Wikimedia Commons ↗

Verbatim

e0

“biochemical amendments were linked to improved nutrient status and photosynthetic efficiency”

✓ located verbatim in the source · abstract, characters 1439–1531 · show in text ↑
t0

“Cyperus esculentus”

✓ located verbatim in the source · title, characters 78–96 · show in text ↑

other · growth · Cyperus esculentusResults agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

intercropping · physiology: photosynthesis · Cyperus esculentusResults agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 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.