Abstract
Residual dibutyl phthalate (DBP) in agricultural soil can be absorbed by crops, posing potential risks to human health through the food chain. Root exudates play a critical role in modulating DBP bioavailability and regulating its uptake, yet the underlying mechanisms remain poorly understood. This study investigated how different root exudates influence DBP absorption dynamics and transport pathways in rice. Citric acid markedly enhanced DBP bioavailability by reducing solution pH and improving root activity through the activation of aquaporin, anion channel, and calcium channels, resulting in higher DBP uptake (bioconcentration factor, BCF = 0.14) and translocation to shoots (translocation factor, TF = 1.66). Conversely, ferulic acid exhibited limited activation, suppressing root activity and hindering DBP uptake and metabolism, which lowered accumulation (BCF = 0.04) and restricted transfer to edible tissues (TF = 0.59). Rhizosphere 16S rRNA sequencing revealed that citric acid selectively enriched acid-resistant Firmicutes, promoting DBP solubilization and accumulation, whereas the control treatment favored Acidobacteria, which facilitated DBP degradation and reduced its availability for root uptake. These findings highlight the pivotal role of root exudates in shaping microbial communities and altering physiological pathways to regulate plasticizer absorption and metabolism in crops, providing novel insights for mitigating phthalate contamination in agricultural systems.
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Claims 12
Claim · model-written summary
Citric acid increased DBP bioavailability by lowering solution pH.
- Taxon
- rice
Oryza sativat0 - Treatment
- Citric acide0
- Outcome
- DBP bioavailabilitye0
- Direction
- enhancede0
- Qualifier
- reducing solution pHe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Citric acid markedly enhanced DBP bioavailability by reducing solution pH”
t0“rice”
Claim · model-written summary
Citric acid improved rice root activity through channel activation.
- Taxon
- riceOryza sativat0
- Outcome
- root activitye0
- Direction
- improvinge0
- Qualifier
- activation of aquaporin, anion channel, and calcium channelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“improving root activity through the activation of aquaporin, anion channel, and calcium channels”
t0“rice”
Claim · model-written summary
Citric acid increased rice DBP uptake, with BCF 0.14.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Citric acid markedly enhanced DBP bioavailability by reducing solution pH and improving root activity through the activation of aquaporin, anion channel, and calcium channels, resulting in higher DBP uptake (bioconcentration factor, BCF = 0.14)”
t0“rice”
Claim · model-written summary
Citric acid increased DBP translocation to rice shoots, with TF 1.66.
- Taxon
- riceOryza sativat0
- Treatment
- Citric acide1
- Outcome
- translocation to shootse0
- Value
- TF = 1.66e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“translocation to shoots (translocation factor, TF = 1.66)”
e1“Citric acid markedly enhanced DBP bioavailability”
t0“rice”
Claim · model-written summary
Ferulic acid suppressed root activity.
- Taxon
- riceOryza sativat0
- Treatment
- ferulic acide0
- Outcome
- root activitye0
- Direction
- suppressinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ferulic acid exhibited limited activation, suppressing root activity and hindering DBP uptake and metabolism”
t0“rice”
Claim · model-written summary
Ferulic acid hindered DBP uptake and metabolism in rice.
- Taxon
- riceOryza sativat0
- Treatment
- ferulic acide0
- Outcome
- DBP uptake and metabolisme0
- Direction
- hinderinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ferulic acid exhibited limited activation, suppressing root activity and hindering DBP uptake and metabolism”
t0“rice”
Claim · model-written summary
Ferulic acid lowered DBP accumulation, with BCF 0.04.
- Taxon
- riceOryza sativat0
- Treatment
- ferulic acide0
- Outcome
- accumulatione0
- Direction
- lowerede0
- Value
- BCF = 0.04e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ferulic acid exhibited limited activation, suppressing root activity and hindering DBP uptake and metabolism, which lowered accumulation (BCF = 0.04)”
t0“rice”
Claim · model-written summary
Ferulic acid restricted transfer to edible tissues, with TF 0.59.
- Taxon
- riceOryza sativat0
- Treatment
- ferulic acide0
- Outcome
- transfer to edible tissuese0
- Direction
- restrictede0
- Value
- TF = 0.59e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ferulic acid exhibited limited activation, suppressing root activity and hindering DBP uptake and metabolism, which lowered accumulation (BCF = 0.04) and restricted transfer to edible tissues (TF = 0.59)”
t0“rice”
Claim · model-written summary
Citric acid enriched acid-resistant Firmicutes in the rice rhizosphere.
- Taxon
- riceOryza sativat0
- Treatment
- citric acide0
- Outcome
- acid-resistant Firmicutese0
- Direction
- enrichede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“citric acid selectively enriched acid-resistant Firmicutes”
t0“rice”
Claim · model-written summary
Citric acid promoted DBP solubilization and accumulation via Firmicutes enrichment.
- Taxon
- riceOryza sativat0
- Treatment
- citric acide0
- Outcome
- DBP solubilization and accumulatione0
- Direction
- promotinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“citric acid selectively enriched acid-resistant Firmicutes, promoting DBP solubilization and accumulation”
t0“rice”
Claim · model-written summary
Control treatment favored Acidobacteria in the rice rhizosphere.
- Taxon
- riceOryza sativat0
- Treatment
- control treatmente0
- Interactor
- AcidobacteriaAcidobacteriotae0symbiont
- Outcome
- Acidobacteriae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the control treatment favored Acidobacteria”
t0“rice”
Claim · model-written summary
Acidobacteria facilitated DBP degradation and reduced availability for root uptake.
- Taxon
- riceOryza sativat0
- Interactor
- AcidobacteriaAcidobacteriotae0symbiont
- Outcome
- DBP degradation and reduced its availability for root uptakee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Acidobacteria, which facilitated DBP degradation and reduced its availability for root uptake”
t0“rice”
The same questions in other papers
citric acid · nutrient: content · Oryza sativa (rice)Positive and negative results
1 paper in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →ferulic acid · molecular: metabolites · Oryza sativa (rice)Results agree
1 paper in the same direction as this paper
- positive
ferulic acid · growth · Oryza sativa (rice)Results agree
3 papers in the same direction as this paper
- negative
- negative
- negative
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.