Ambrosia trifida 827 claims

species · family Asteraceae · green plant · NCBI Taxonomy ↗

Common name: giant ragweed — Also written in claims: giant ragweed · A. trifida L · giant ragweeds · A.trifida

20 spellings

Questions studied on this organism12 questions21 papers

Ambrosia trifidaLe.Loup.Gris · CC BY-SA 3.0 · Wikimedia Commons ↗

827 claims

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Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combined warming and nitrogen addition promoted Ambrosia biomass accumulation.

Taxon: Ambrosia trifidaAmbrosia trifidat0
Treatment: warming and nitrogen additione0
Outcome: biomass accumulatione0
Direction: promotede0

Not reportedComparator

Verbatim

e0
“warming and nitrogen addition together promoted biomass accumulation”
✓ located verbatim in the source · abstract, characters 718–786

t0
“Ambrosia trifida”
✓ located verbatim in the source · title, characters 137–153

Title

Warming outweighs nitrogen deposition in shaping rhizosphere microbial structure involved in carbon, nitrogen, and phosphorus cycling in Ambrosia trifida

Ke Xu; Ping Guan; Wanyu Du; et al. Frontiers in Plant Science 2026. doi:10.3389/fpls.2026.1686326

Other claims from this paper (8)

Intervention effect Combined warming and nitrogen addition enhanced rhizosphere soil nutrient content.
Intervention effect Warming increased carbon fixation gene abundance in the Ambrosia rhizosphere.
Intervention effect Nitrogen addition suppressed rhizosphere nitrification and denitrification genes.
Intervention effect Warming enhanced phosphate solubilization, phosphorus mineralization and phosphorus transport gene abundance.
Intervention effect Warming increased relative abundance of Sphingomicrobium, Massilia and Nocardioides.
Intervention effect Warming reduced relative abundance of Pseudomonas, Trinickia and Rhizomicrobium.
Intervention effect Nitrogen deposition affected the functional microbial community less than warming.
Association Alkaloids, organic acids and phenolic compounds correlated with functional genes and may drive microbial shifts.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Combined warming and nitrogen addition enhanced rhizosphere soil nutrient content.

Taxon: Ambrosia trifidaAmbrosia trifidat0
Treatment: their combinatione0
Outcome: soil nutrient contente0
Direction: enhancede0

Not reportedComparator

Verbatim

e0
“their combination enhanced soil nutrient content”
✓ located verbatim in the source · abstract, characters 792–840

t0
“Ambrosia trifida”
✓ located verbatim in the source · title, characters 137–153

Title

Warming outweighs nitrogen deposition in shaping rhizosphere microbial structure involved in carbon, nitrogen, and phosphorus cycling in Ambrosia trifida

Ke Xu; Ping Guan; Wanyu Du; et al. Frontiers in Plant Science 2026. doi:10.3389/fpls.2026.1686326

Other claims from this paper (8)

Intervention effect Combined warming and nitrogen addition promoted Ambrosia biomass accumulation.
Intervention effect Warming increased carbon fixation gene abundance in the Ambrosia rhizosphere.
Intervention effect Nitrogen addition suppressed rhizosphere nitrification and denitrification genes.
Intervention effect Warming enhanced phosphate solubilization, phosphorus mineralization and phosphorus transport gene abundance.
Intervention effect Warming increased relative abundance of Sphingomicrobium, Massilia and Nocardioides.
Intervention effect Warming reduced relative abundance of Pseudomonas, Trinickia and Rhizomicrobium.
Intervention effect Nitrogen deposition affected the functional microbial community less than warming.
Association Alkaloids, organic acids and phenolic compounds correlated with functional genes and may drive microbial shifts.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Warming increased carbon fixation gene abundance in the Ambrosia rhizosphere.

Taxon: Ambrosia trifidaAmbrosia trifidat0
Treatment: Warminge0
Gene: acs, acsA, PCCA, MUTe0
Outcome: abundance of functional genes involved in carbon fixatione0
Direction: increasede0

Not reportedComparator

Verbatim

e0
“Warming increased the abundance of functional genes involved in carbon fixation (e.g., acs, acsA, PCCA, MUT )”
✓ located verbatim in the source · abstract, characters 842–951

t0
“Ambrosia trifida”
✓ located verbatim in the source · title, characters 137–153

Title

Warming outweighs nitrogen deposition in shaping rhizosphere microbial structure involved in carbon, nitrogen, and phosphorus cycling in Ambrosia trifida

Ke Xu; Ping Guan; Wanyu Du; et al. Frontiers in Plant Science 2026. doi:10.3389/fpls.2026.1686326

Other claims from this paper (8)

Intervention effect Combined warming and nitrogen addition promoted Ambrosia biomass accumulation.
Intervention effect Combined warming and nitrogen addition enhanced rhizosphere soil nutrient content.
Intervention effect Nitrogen addition suppressed rhizosphere nitrification and denitrification genes.
Intervention effect Warming enhanced phosphate solubilization, phosphorus mineralization and phosphorus transport gene abundance.
Intervention effect Warming increased relative abundance of Sphingomicrobium, Massilia and Nocardioides.
Intervention effect Warming reduced relative abundance of Pseudomonas, Trinickia and Rhizomicrobium.
Intervention effect Nitrogen deposition affected the functional microbial community less than warming.
Association Alkaloids, organic acids and phenolic compounds correlated with functional genes and may drive microbial shifts.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Nitrogen addition suppressed rhizosphere nitrification and denitrification genes.

Taxon: Ambrosia trifidaAmbrosia trifidat0
Treatment: nitrogen additione0
Outcome: nitrification and denitrification genese0
Direction: suppressede0

Not reportedComparator

Verbatim

e0
“nitrogen addition suppressed nitrification and denitrification genes”
✓ located verbatim in the source · abstract, characters 961–1029

t0
“Ambrosia trifida”
✓ located verbatim in the source · title, characters 137–153

Title

Warming outweighs nitrogen deposition in shaping rhizosphere microbial structure involved in carbon, nitrogen, and phosphorus cycling in Ambrosia trifida

Ke Xu; Ping Guan; Wanyu Du; et al. Frontiers in Plant Science 2026. doi:10.3389/fpls.2026.1686326

Other claims from this paper (8)

Intervention effect Combined warming and nitrogen addition promoted Ambrosia biomass accumulation.
Intervention effect Combined warming and nitrogen addition enhanced rhizosphere soil nutrient content.
Intervention effect Warming increased carbon fixation gene abundance in the Ambrosia rhizosphere.
Intervention effect Warming enhanced phosphate solubilization, phosphorus mineralization and phosphorus transport gene abundance.
Intervention effect Warming increased relative abundance of Sphingomicrobium, Massilia and Nocardioides.
Intervention effect Warming reduced relative abundance of Pseudomonas, Trinickia and Rhizomicrobium.
Intervention effect Nitrogen deposition affected the functional microbial community less than warming.
Association Alkaloids, organic acids and phenolic compounds correlated with functional genes and may drive microbial shifts.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Warming enhanced phosphate solubilization, phosphorus mineralization and phosphorus transport gene abundance.

Taxon: Ambrosia trifidaAmbrosia trifidat0
Treatment: Warminge0
Outcome: abundance of genes related to inorganic phosphate solubilizatione0
Direction: enhancede0

Not reportedComparator

Verbatim

e0
“Warming also enhanced the abundance of genes related to inorganic phosphate solubilization ( ppk, ppx ), phosphorus mineralization ( phnPP, phnF, glpQ ), and phosphorus transport ( pstBC, ugpABCE )”
✓ located verbatim in the source · abstract, characters 1031–1228

t0
“Ambrosia trifida”
✓ located verbatim in the source · title, characters 137–153

Title

Warming outweighs nitrogen deposition in shaping rhizosphere microbial structure involved in carbon, nitrogen, and phosphorus cycling in Ambrosia trifida

Ke Xu; Ping Guan; Wanyu Du; et al. Frontiers in Plant Science 2026. doi:10.3389/fpls.2026.1686326

Other claims from this paper (8)

Intervention effect Combined warming and nitrogen addition promoted Ambrosia biomass accumulation.
Intervention effect Combined warming and nitrogen addition enhanced rhizosphere soil nutrient content.
Intervention effect Warming increased carbon fixation gene abundance in the Ambrosia rhizosphere.
Intervention effect Nitrogen addition suppressed rhizosphere nitrification and denitrification genes.
Intervention effect Warming increased relative abundance of Sphingomicrobium, Massilia and Nocardioides.
Intervention effect Warming reduced relative abundance of Pseudomonas, Trinickia and Rhizomicrobium.
Intervention effect Nitrogen deposition affected the functional microbial community less than warming.
Association Alkaloids, organic acids and phenolic compounds correlated with functional genes and may drive microbial shifts.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Warming increased relative abundance of Sphingomicrobium, Massilia and Nocardioides.

Taxon: Ambrosia trifidaAmbrosia trifidat0
Treatment: warminge0
Interactor: SphingomicrobiumSphingomicrobiume0other
Outcome: relative abundance of beneficial taxae0
Direction: increasede0

Not reportedComparator

Verbatim

e0
“warming increased the relative abundance of beneficial taxa such as Sphingomicrobium, Massilia , and Nocardioides”
✓ located verbatim in the source · abstract, characters 1244–1357

t0
“Ambrosia trifida”
✓ located verbatim in the source · title, characters 137–153

Title

Warming outweighs nitrogen deposition in shaping rhizosphere microbial structure involved in carbon, nitrogen, and phosphorus cycling in Ambrosia trifida

Ke Xu; Ping Guan; Wanyu Du; et al. Frontiers in Plant Science 2026. doi:10.3389/fpls.2026.1686326

Other claims from this paper (8)

Intervention effect Combined warming and nitrogen addition promoted Ambrosia biomass accumulation.
Intervention effect Combined warming and nitrogen addition enhanced rhizosphere soil nutrient content.
Intervention effect Warming increased carbon fixation gene abundance in the Ambrosia rhizosphere.
Intervention effect Nitrogen addition suppressed rhizosphere nitrification and denitrification genes.
Intervention effect Warming enhanced phosphate solubilization, phosphorus mineralization and phosphorus transport gene abundance.
Intervention effect Warming reduced relative abundance of Pseudomonas, Trinickia and Rhizomicrobium.
Intervention effect Nitrogen deposition affected the functional microbial community less than warming.
Association Alkaloids, organic acids and phenolic compounds correlated with functional genes and may drive microbial shifts.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Warming reduced relative abundance of Pseudomonas, Trinickia and Rhizomicrobium.

Taxon: Ambrosia trifidaAmbrosia trifidat0
Outcome: Pseudomonas, Trinickia , and Rhizomicrobiume0
Direction: reducinge0

Not reportedTreatmentComparator

Verbatim

e0
“reducing Pseudomonas, Trinickia , and Rhizomicrobium”
✓ located verbatim in the source · abstract, characters 1366–1418

t0
“Ambrosia trifida”
✓ located verbatim in the source · title, characters 137–153

Title

Warming outweighs nitrogen deposition in shaping rhizosphere microbial structure involved in carbon, nitrogen, and phosphorus cycling in Ambrosia trifida

Ke Xu; Ping Guan; Wanyu Du; et al. Frontiers in Plant Science 2026. doi:10.3389/fpls.2026.1686326

Other claims from this paper (8)

Intervention effect Combined warming and nitrogen addition promoted Ambrosia biomass accumulation.
Intervention effect Combined warming and nitrogen addition enhanced rhizosphere soil nutrient content.
Intervention effect Warming increased carbon fixation gene abundance in the Ambrosia rhizosphere.
Intervention effect Nitrogen addition suppressed rhizosphere nitrification and denitrification genes.
Intervention effect Warming enhanced phosphate solubilization, phosphorus mineralization and phosphorus transport gene abundance.
Intervention effect Warming increased relative abundance of Sphingomicrobium, Massilia and Nocardioides.
Intervention effect Nitrogen deposition affected the functional microbial community less than warming.
Association Alkaloids, organic acids and phenolic compounds correlated with functional genes and may drive microbial shifts.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Nitrogen deposition affected the functional microbial community less than warming.

Taxon: Ambrosia trifidaAmbrosia trifidat0
Treatment: Nitrogen depositione0
Outcome: functional microbial communitye0
Direction: weakere0

Not reportedComparator

Verbatim

e0
“Nitrogen deposition had a comparatively weaker effect on the functional microbial community”
✓ located verbatim in the source · abstract, characters 1421–1512

t0
“Ambrosia trifida”
✓ located verbatim in the source · title, characters 137–153

Title

Warming outweighs nitrogen deposition in shaping rhizosphere microbial structure involved in carbon, nitrogen, and phosphorus cycling in Ambrosia trifida

Ke Xu; Ping Guan; Wanyu Du; et al. Frontiers in Plant Science 2026. doi:10.3389/fpls.2026.1686326

Other claims from this paper (8)

Intervention effect Combined warming and nitrogen addition promoted Ambrosia biomass accumulation.
Intervention effect Combined warming and nitrogen addition enhanced rhizosphere soil nutrient content.
Intervention effect Warming increased carbon fixation gene abundance in the Ambrosia rhizosphere.
Intervention effect Nitrogen addition suppressed rhizosphere nitrification and denitrification genes.
Intervention effect Warming enhanced phosphate solubilization, phosphorus mineralization and phosphorus transport gene abundance.
Intervention effect Warming increased relative abundance of Sphingomicrobium, Massilia and Nocardioides.
Intervention effect Warming reduced relative abundance of Pseudomonas, Trinickia and Rhizomicrobium.
Association Alkaloids, organic acids and phenolic compounds correlated with functional genes and may drive microbial shifts.

Associationauthor interpretationoriginal resultmeasured

Claim · model-written summary

Alkaloids, organic acids and phenolic compounds correlated with functional genes and may drive microbial shifts.

Taxon: Ambrosia trifidaAmbrosia trifidat0
Compound: alkaloids, organic acids, and phenolic compoundse0
Outcome: microbial functional shiftse0

Not reportedDirection

Verbatim

e0
“Correlation analysis between metabolites and functional genes suggested that alkaloids, organic acids, and phenolic compounds may be key drivers of microbial functional shifts”
✓ located verbatim in the source · abstract, characters 1514–1689

t0
“Ambrosia trifida”
✓ located verbatim in the source · title, characters 137–153

Title

Warming outweighs nitrogen deposition in shaping rhizosphere microbial structure involved in carbon, nitrogen, and phosphorus cycling in Ambrosia trifida

Ke Xu; Ping Guan; Wanyu Du; et al. Frontiers in Plant Science 2026. doi:10.3389/fpls.2026.1686326

Other claims from this paper (8)

Intervention effect Combined warming and nitrogen addition promoted Ambrosia biomass accumulation.
Intervention effect Combined warming and nitrogen addition enhanced rhizosphere soil nutrient content.
Intervention effect Warming increased carbon fixation gene abundance in the Ambrosia rhizosphere.
Intervention effect Nitrogen addition suppressed rhizosphere nitrification and denitrification genes.
Intervention effect Warming enhanced phosphate solubilization, phosphorus mineralization and phosphorus transport gene abundance.
Intervention effect Warming increased relative abundance of Sphingomicrobium, Massilia and Nocardioides.
Intervention effect Warming reduced relative abundance of Pseudomonas, Trinickia and Rhizomicrobium.
Intervention effect Nitrogen deposition affected the functional microbial community less than warming.

Observationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Four secondary metabolites were identified as a differentiated germination regulatory network.

Taxon: Ambrosia trifida L.Ambrosia trifidae1
Outcome: four key secondary metabolites forming a functionally differentiated regulatory networke0

Verbatim

e0
“We identified four key secondary metabolites forming a functionally differentiated regulatory network (P < 0.01).”
✓ located verbatim in the source · abstract, characters 584–697

e1
“Ambrosia trifida L.”
✓ located verbatim in the source · abstract, characters 355–374

Title

Intraspecific chemical cues drive informed germination bet-hedging in an invasive plant

Hongyang Chen; Shiyu Diao; Tiantian Qin; et al. Journal of Plant Ecology 2026. doi:10.1093/jpe/rtag111

Other claims from this paper (8)

Intervention effect Low vanillin concentrations promoted germination.
Intervention effect High vanillin concentrations inhibited germination.
Intervention effect Umbelliferone inhibited germination linearly.
Intervention effect Trifolin promoted germination linearly.
Observation Angelicin was found exclusively in seeds.
Intervention effect Angelicin promoted germination in a concentration-dependent manner.
Intervention effect Angelicin upregulated ribosome biogenesis and hormone signaling.
Intervention effect Angelicin enriched nucleotide and lipid metabolism.