Populus trichocarpa 3,172 claims

species · family Salicaceae · green plant · NCBI Taxonomy ↗

Common name: black cottonwood — Also written in claims: black cottonwood · poplar · P. trichocarpa x P. deltoides · P. trichocarpa × P. deltoides · P . trichocarpa · P.trichocarpa — NCBI synonyms: Populus balsamifera subsp. trichocarpa

80 spellings

Questions studied on this organism17 questions29 papers

Populus trichocarpa · picture from its Wikimedia Commons categoryDaniel Mayer (mav) · CC BY-SA 3.0 · Wikimedia Commons ↗

3,172 claims

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Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Sphaerulina musiva relative abundance was highest at day 10 in soils with reduced resident microbial diversity.

Taxon: Populus trichocarpaPopulus trichocarpae0
Treatment: soils with reduced resident microbial diversitye2
Interactor: Sphaerulina musivaSphaerulina musivae0pathogen
Outcome: S. musiva relative abundancee2
Direction: higheste2
Qualifier: at day 10 postinoculatione2
Setting: growth chambere1

Verbatim

e0
“Sphaerulina musiva is a fungal pathogen responsible for defoliating leaf spots and fatal stem cankers on Populus trichocarpa and hybrid Populus trees”
✓ located verbatim in the source · abstract, characters 0–149

e1
“we conducted a growth chamber experiment in which field soils that differed in microbial diversity were inoculated with two genetically distinct S. musiva isolates”
✓ located verbatim in the source · abstract, characters 571–734

e2
“S. musiva relative abundance was the highest at day 10 postinoculation in soils with reduced resident microbial diversity”
✓ located verbatim in the source · abstract, characters 1022–1143

Title

Microbial Diversity Limits Belowground Colonization of Sphaerulina musiva

Aaron J. Onufrak; Alyssa A. Carrell; Dana L. Carper; et al. PhytoFrontiers™ 2026. doi:10.1094/phytofr-07-25-0065-r

Other claims from this paper (2)

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Sphaerulina musiva was nearly undetectable in both roots and soils by day 25.

Taxon: Populus trichocarpaPopulus trichocarpae0
Organ / stage: roots and soilse3
Interactor: Sphaerulina musivaSphaerulina musivae0pathogen
Outcome: the pathogen was nearly undetectablee3
Qualifier: By day 25e3

Verbatim

e0
“Sphaerulina musiva is a fungal pathogen responsible for defoliating leaf spots and fatal stem cankers on Populus trichocarpa and hybrid Populus trees”
✓ located verbatim in the source · abstract, characters 0–149

e3
“By day 25, however, the pathogen was nearly undetectable in both roots and soils”
✓ located verbatim in the source · abstract, characters 1145–1225

Title

Microbial Diversity Limits Belowground Colonization of Sphaerulina musiva

Aaron J. Onufrak; Alyssa A. Carrell; Dana L. Carper; et al. PhytoFrontiers™ 2026. doi:10.1094/phytofr-07-25-0065-r

Other claims from this paper (2)

Associationobservedoriginal resultmeasured

Claim · model-written summary

Soil fungal community composition shifted, depending on resident soil microbial diversity, plant host presence and sampling time.

Taxon: Populus trichocarpaPopulus trichocarpae0
Treatment: resident soil microbial diversity, plant host presence, and sampling timee4
Outcome: shifts in soil fungal community compositione4

Not reportedDirection

Verbatim

e0
“Sphaerulina musiva is a fungal pathogen responsible for defoliating leaf spots and fatal stem cankers on Populus trichocarpa and hybrid Populus trees”
✓ located verbatim in the source · abstract, characters 0–149

e4
“we observed shifts in soil fungal community composition, but they were dependent on resident soil microbial diversity, plant host presence, and sampling time”
✓ located verbatim in the source · abstract, characters 1241–1398

Title

Microbial Diversity Limits Belowground Colonization of Sphaerulina musiva

Aaron J. Onufrak; Alyssa A. Carrell; Dana L. Carper; et al. PhytoFrontiers™ 2026. doi:10.1094/phytofr-07-25-0065-r

Other claims from this paper (2)

Observationobservedoriginal resultmeasured

Claim · model-written summary

PtrCLE1A and PtrCLE1B are expressed mainly in the roots and xylem of Populus trichocarpa.

Taxon: P. trichocarpaPopulus trichocarpae3
Organ / stage: roots and xyleme3
Gene: PtrCLE1A and PtrCLE1Be3
Outcome: primarily expressede3

Verbatim

e3
“PtrCLE1A and PtrCLE1B are primarily expressed in the roots and xylem of P. trichocarpa”
✓ located verbatim in the source · abstract, characters 1026–1112

Title

Overexpression of the PtrCLE1A Gene Enhances Drought Tolerance in Poplar

Zheng Li; Feng-Xin Chen; Yu-Qi Liu; et al. Forests 2026. doi:10.3390/f17010113

Other claims from this paper (10)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Only the PtrCLE1A promoter of Populus trichocarpa contains drought-responsive cis-elements.

Taxon: P. trichocarpaPopulus trichocarpae4
Gene: PtrCLE1A promotere4
Outcome: drought-responsive cis-elementse4

Verbatim

e4
“only the PtrCLE1A promoter contained drought-responsive cis-elements, and its expression was induced by drought stress in root, xylem, and leaf tissues of P. trichocarpa”
✓ located verbatim in the source · abstract, characters 1128–1297

Title

Overexpression of the PtrCLE1A Gene Enhances Drought Tolerance in Poplar

Zheng Li; Feng-Xin Chen; Yu-Qi Liu; et al. Forests 2026. doi:10.3390/f17010113

Other claims from this paper (10)

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

PtrCLE1A expression was induced by drought stress in root, xylem and leaf tissues of Populus trichocarpa.

Taxon: P. trichocarpaPopulus trichocarpae4
Organ / stage: root, xylem, and leaf tissuese4
Treatment: drought stresse4
Gene: PtrCLE1Ae4
Outcome: expressione4
Direction: inducede4

Not reportedComparator

Verbatim

e4
“only the PtrCLE1A promoter contained drought-responsive cis-elements, and its expression was induced by drought stress in root, xylem, and leaf tissues of P. trichocarpa”
✓ located verbatim in the source · abstract, characters 1128–1297

Title

Overexpression of the PtrCLE1A Gene Enhances Drought Tolerance in Poplar

Zheng Li; Feng-Xin Chen; Yu-Qi Liu; et al. Forests 2026. doi:10.3390/f17010113

Other claims from this paper (10)

Observationobservedoriginal resultmeasured

Claim · model-written summary

The PtrCLE1A pre-propeptide was localized around the plasma membrane in tobacco mesophyll cells.

Taxon: Populus trichocarpaPopulus trichocarpae0
Gene: PtrCLE1Ae5
Outcome: localized around the plasma membranee5

Verbatim

e5
“the PtrCLE1A pre-propeptide was localized around the plasma membrane in tobacco”
✓ located verbatim in the source · abstract, characters 859–938

e0
“this study investigated the function of the PtrCLE1A gene from Populus trichocarpa Torr. et Gray”
✓ located verbatim in the source · abstract, characters 257–353

Title

Overexpression of the PtrCLE1A Gene Enhances Drought Tolerance in Poplar

Zheng Li; Feng-Xin Chen; Yu-Qi Liu; et al. Forests 2026. doi:10.3390/f17010113

Other claims from this paper (10)

Observationobservedoriginal resultmeasured

Claim · model-written summary

PtrCLE1A and PtrCLE1B encode pre-propeptides with an identical mature peptide sequence of Populus trichocarpa.

Taxon: Populus trichocarpaPopulus trichocarpae0
Gene: PtrCLE1A and PtrCLE1Be6
Outcome: identical mature peptide sequencee6
Value: RLSPGGPDPRHHe6

Verbatim

e6
“both PtrCLE1A and PtrCLE1B encode pre-propeptides containing a signal peptide, with an identical mature peptide sequence (RLSPGGPDPRHH)”
✓ located verbatim in the source · abstract, characters 665–800

e0
“this study investigated the function of the PtrCLE1A gene from Populus trichocarpa Torr. et Gray”
✓ located verbatim in the source · abstract, characters 257–353

Title

Overexpression of the PtrCLE1A Gene Enhances Drought Tolerance in Poplar

Zheng Li; Feng-Xin Chen; Yu-Qi Liu; et al. Forests 2026. doi:10.3390/f17010113

Other claims from this paper (10)

Observationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The putative receptors of PtrCLE1A and PtrCLE1B in Populus trichocarpa are PtrCLV1/2.

Taxon: Populus trichocarpaPopulus trichocarpae0
Gene: PtrCLV1/2e7
Outcome: putative receptorse7

Verbatim

e7
“their putative receptors are PtrCLV1/2”
✓ located verbatim in the source · abstract, characters 806–844

e0
“this study investigated the function of the PtrCLE1A gene from Populus trichocarpa Torr. et Gray”
✓ located verbatim in the source · abstract, characters 257–353

Title

Overexpression of the PtrCLE1A Gene Enhances Drought Tolerance in Poplar

Zheng Li; Feng-Xin Chen; Yu-Qi Liu; et al. Forests 2026. doi:10.3390/f17010113

Other claims from this paper (10)

Observationobservedoriginal resultmeasured

Claim · model-written summary

The reference genotype Nisqually-1 buds contained 32 lipophilic metabolites in four chemical groups.

Taxon: Populus trichocarpaPopulus trichocarpat0
Material: Nisqually-1e0
Organ / stage: Budst0
Outcome: lipophilic metabolitese0
Value: 32e0
Qualifier: belonging to four chemical groupse0

Verbatim

t0
“Populus trichocarpa Buds”
✓ located verbatim in the source · title, characters 27–51

e0
“In the reference genotype Nisqually-1, a total of 32 lipophilic metabolites were detected, belonging to four chemical groups: terpenoids, phenylpropanoids, linear hydrocarbons, and others”
✓ located verbatim in the source · abstract, characters 548–735

Title

Phytochemical Diversity in Populus trichocarpa Buds: Insights into Population Variation and Antifungal Properties

Sam C. Cothron; Luke Leftwich; Jin-Gui Chen; et al. Plants 2026. doi:10.3390/plants15111746

Other claims from this paper (5)