Search claims · PlantClaims

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Increasing nitrate heterogeneity decreased root ramification density under excessive nitrate.

Taxon: Arabidopsis thalianaArabidopsis thalianat0
Treatment: increasing heterogeneitye0
Outcome: ramification densityt1
Direction: decreasee0
Qualifier: excessive situationse0

Not reportedComparator

Verbatim

e0
“a decrease with increasing heterogeneity in excessive situations”
✓ located verbatim in the source · abstract, characters 884–948

t0
“Arabidopsis thaliana”
✓ located verbatim in the source · title, characters 96–116

t1
“increase in ramification density with increasing heterogeneity”
✓ located verbatim in the source · abstract, characters 792–854

Title

Combined effects of contrast between poor and rich patches and overall nitrate concentration on Arabidopsis thaliana root system structure

Manuel Blouin; Ruben Puga-Freitas Functional Plant Biology 2011. doi:10.1071/fp10232

Other claims from this paper (3)

Observationobservedoriginal resultmeasured

Claim · model-written summary

The stomatal density decrease occurred with enzyme localization in each tested cell compartment.

Taxon: Arabidopsis thalianaArabidopsis thalianat0
Outcome: reduction in stomatal densitye0
Direction: reductione0
Qualifier: cytosol, chloroplast stroma or chloroplast intermembrane spacee0

Verbatim

e0
“this reduction in stomatal density occurs irrespective of whether the expressed enzyme is localized to the cytosol, chloroplast stroma or chloroplast intermembrane space of these cells”
✓ located verbatim in the source · abstract, characters 467–651

t0
“Arabidopsis thaliana”
✓ located verbatim in the source · title, characters 151–171

Title

Metabolic engineering of stomatal precursor cells enhances photosynthetic water‐use efficiency and vegetative growth under water‐deficit conditions in Arabidopsis thaliana

Jacques W. Bouvier; Steven Kelly Plant Biotechnology Journal 2025. doi:10.1111/pbi.70130

Other claims from this paper (4)

Intervention effect Expression of a water forming NAD(P)H oxidase in stomatal precursors decreased stomatal density.
Intervention effect Reduced stomatal density had no measurable effect on photosynthesis efficiency, thermal sensitivity or stomatal dynamics.
Intervention effect Overexpression plants had higher intrinsic water use efficiency through more carbon fixed per unit water transpired.
Intervention effect Enhanced water use efficiency improved vegetative growth and biomass under water deficit.

Observationobservedreview summarynegativemeasured

Claim · model-written summary

Mature and new Arabidopsis leaves showed reduced stomatal density when only mature leaves were exposed to high CO2.

Taxon: Arabidopsis thalianaArabidopsis thalianae1
Organ / stage: mature leaves and new leavese0
Treatment: high CO2e0
Outcome: stomata densitye0
Direction: decreasee0

Verbatim

e0
“Both mature leaves and new leaves exhibited a decrease in stomata density when only the mature leaves were exposed to high CO2”
✓ located verbatim in the source · abstract, characters 190–316

e1
“Arabidopsis thaliana”
✓ located verbatim in the source · abstract, characters 86–106

Title

Leaves Talk Long Distance

Science Signaling 2001. doi:10.1126/scisignal.822001tw11

Other claims from this paper (1)

Mechanism The authors proposed a signal transmitted from older to younger leaves.

Intervention effectobservedreview summarymeasured

Claim · model-written summary

Mature Arabidopsis leaves decreased stomatal density when only mature leaves received high CO2.

Taxon: Arabidopsis thalianaArabidopsis thalianae1
Organ / stage: mature leavese0
Treatment: high CO 2e0
Outcome: stomata densitye0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“Both mature leaves and new leaves exhibited a decrease in stomata density when only the mature leaves were exposed to high CO 2”
✓ located verbatim in the source · abstract, characters 192–319

e1
“older leaves of Arabidopsis thaliana seem to influence the response of younger leaves”
✓ located verbatim in the source · abstract, characters 71–156

Title

Leaves Talk Long Distance

Science s STKE 2001. doi:10.1126/stke.2001.82.tw11

Other claims from this paper (2)

Intervention effect New Arabidopsis leaves decreased stomatal density when only mature leaves received high CO2.
Mechanism The authors suggested a signal travels from older to younger leaves.

Intervention effectobservedreview summarymeasured

Claim · model-written summary

New Arabidopsis leaves decreased stomatal density when only mature leaves received high CO2.

Taxon: Arabidopsis thalianaArabidopsis thalianae1
Organ / stage: new leavese0
Treatment: high CO 2e0
Outcome: stomata densitye0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“Both mature leaves and new leaves exhibited a decrease in stomata density when only the mature leaves were exposed to high CO 2”
✓ located verbatim in the source · abstract, characters 192–319

e1
“older leaves of Arabidopsis thaliana seem to influence the response of younger leaves”
✓ located verbatim in the source · abstract, characters 71–156

Title

Leaves Talk Long Distance

Science s STKE 2001. doi:10.1126/stke.2001.82.tw11

Other claims from this paper (2)

Intervention effect Mature Arabidopsis leaves decreased stomatal density when only mature leaves received high CO2.
Mechanism The authors suggested a signal travels from older to younger leaves.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

The phyB mutant promoted the decrease in silique number at high densities.

Taxon: Arabidopsis thalianaArabidopsis thalianae0
Material: phyBe2
Outcome: silique numbere1
Direction: promotede2

Verbatim

e0
“Here, we show that such density effects were unaffected by the position of wild-type (WT) and gibberellic acid insensitive (gai) strains of Arabidopsis thaliana (Arabidopsis) within pots”
✓ located verbatim in the source · abstract, characters 142–328

e1
“spy suppressed the reduction of silique number at high densities”
✓ located verbatim in the source · abstract, characters 1190–1254

e2
“phyB promoted the decrease”
✓ located verbatim in the source · abstract, characters 1266–1292

Title

Density effects on semi-dwarf and early flowering mutants of Arabidopsis thaliana under continuous light

Kei Takahashi; Miyuki Hara; Kana Miyata; et al. Plant Biotechnology 2016. doi:10.5511/plantbiotechnology.16.0912a

Other claims from this paper (14)

Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Low phosphorus decreased the cross-sectional area of individual trichoblasts by 31%.

Taxon: Arabidopsis thalianaArabidopsis thalianat0
Treatment: Low phosphoruse6
Outcome: area of individual trichoblastse6
Direction: decreasee6
Value: 31%e6

Not reportedComparator

Verbatim

e6
“Low phosphorus significantly changed root anatomy, causing a 9% increase in root diameter, a 31% decrease in the cross‐sectional area of individual trichoblasts, a 40% decrease in the cross‐sectional area of individual atrichoblasts, and 45% more cortical cells in cross‐section”
✓ located verbatim in the source · abstract, characters 1371–1649

t0
“Regulation of root hair density by phosphorus availability in Arabidopsis thaliana”
✓ located verbatim in the source · title, characters 0–82

Title

Regulation of root hair density by phosphorus availability in Arabidopsis thaliana

Z. Ma; D. G. Bielenberg; K. M. Brown; et al. Plant Cell & Environment 2001. doi:10.1046/j.1365-3040.2001.00695.x

Other claims from this paper (14)

Intervention effect Root hair density was about five times greater in low phosphorus media than in high phosphorus media.
Intervention effect Root hair density decreased logarithmically as phosphorus concentration increased within the tested range.
Intervention effect Root hair density increased under deficiencies of other nutrients, but less strongly than under low phosphorus.
Intervention effect Indoleacetic acid increased root hair density under high phosphorus but had very little effect under low phosphorus.
Intervention effect The auxin transport inhibitor CMPA increased root hair density under high phosphorus but had very little effect under low phosphorus.
Intervention effect The ethylene precursor ACC increased root hair density under high phosphorus but had very little effect under low phosphorus.
Intervention effect The ethylene synthesis inhibitor AOA increased root hair density under high phosphorus but had very little effect under low phosphorus.
Intervention effect Low phosphorus increased root diameter by 9%.
Intervention effect Low phosphorus decreased the cross-sectional area of individual atrichoblasts by 40%.
Intervention effect Low phosphorus increased the number of cortical cells in cross-section by 45%.
Intervention effect Low phosphorus increased the number of trichoblast files from eight to 12.
Mechanism Two-thirds of the increase in root hair density under low phosphorus was caused by a higher likelihood of trichoblasts forming hairs.
Mechanism Changes in root anatomy under low phosphorus accounted for 33% of the increase in root hair density.
Intervention effect Initial root hairs were not sensitive to phosphorus availability.

Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Low phosphorus decreased the cross-sectional area of individual atrichoblasts by 40%.

Taxon: Arabidopsis thalianaArabidopsis thalianat0
Treatment: Low phosphoruse6
Outcome: area of individual atrichoblastse6
Direction: decreasee6
Value: 40%e6

Not reportedComparator

Verbatim

e6
“Low phosphorus significantly changed root anatomy, causing a 9% increase in root diameter, a 31% decrease in the cross‐sectional area of individual trichoblasts, a 40% decrease in the cross‐sectional area of individual atrichoblasts, and 45% more cortical cells in cross‐section”
✓ located verbatim in the source · abstract, characters 1371–1649

t0
“Regulation of root hair density by phosphorus availability in Arabidopsis thaliana”
✓ located verbatim in the source · title, characters 0–82

Title

Regulation of root hair density by phosphorus availability in Arabidopsis thaliana

Z. Ma; D. G. Bielenberg; K. M. Brown; et al. Plant Cell & Environment 2001. doi:10.1046/j.1365-3040.2001.00695.x

Other claims from this paper (14)

Intervention effect Root hair density was about five times greater in low phosphorus media than in high phosphorus media.
Intervention effect Root hair density decreased logarithmically as phosphorus concentration increased within the tested range.
Intervention effect Root hair density increased under deficiencies of other nutrients, but less strongly than under low phosphorus.
Intervention effect Indoleacetic acid increased root hair density under high phosphorus but had very little effect under low phosphorus.
Intervention effect The auxin transport inhibitor CMPA increased root hair density under high phosphorus but had very little effect under low phosphorus.
Intervention effect The ethylene precursor ACC increased root hair density under high phosphorus but had very little effect under low phosphorus.
Intervention effect The ethylene synthesis inhibitor AOA increased root hair density under high phosphorus but had very little effect under low phosphorus.
Intervention effect Low phosphorus increased root diameter by 9%.
Intervention effect Low phosphorus decreased the cross-sectional area of individual trichoblasts by 31%.
Intervention effect Low phosphorus increased the number of cortical cells in cross-section by 45%.
Intervention effect Low phosphorus increased the number of trichoblast files from eight to 12.
Mechanism Two-thirds of the increase in root hair density under low phosphorus was caused by a higher likelihood of trichoblasts forming hairs.
Mechanism Changes in root anatomy under low phosphorus accounted for 33% of the increase in root hair density.
Intervention effect Initial root hairs were not sensitive to phosphorus availability.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

SNP increased lateral root density in root portions formed during treatment.

Taxon: Arabidopsis thalianaArabidopsis thalianae0
Treatment: SNPe1
Outcome: LR densitye1
Direction: increasee1

Not reportedComparator

Verbatim

e0
“Arabidopsis thaliana roots were treated with an NO donor (sodium nitroprusside [SNP])”
✓ located verbatim in the source · abstract, characters 745–830

e1
“In the latter, SNP caused root growth inhibition and an increase in the LR density accompanied by a decrease in LRI index”
✓ located verbatim in the source · abstract, characters 1020–1141

Title

Heuristic aspect of the lateral root initiation index: A case study of the role of nitric oxide in root branching

Verónica Lira‐Ruan; Selene Napsucialy Mendivil; Joseph G. Dubrovsky Applications in Plant Sciences 2013. doi:10.3732/apps.1300029

Other claims from this paper (6)

Intervention effect SNP inhibited primary root growth in the root portion formed during treatment.
Intervention effect SNP decreased the lateral root initiation index in root portions formed during treatment.
Intervention effect The nitric oxide scavenger reversed the inhibitory effect of SNP on lateral root initiation.
Intervention effect Nitric oxide slightly promoted branching in root portions formed before treatment.
Intervention effect Nitric oxide strongly inhibited branching in root portions formed during treatment.
Method / resource The initiation index exposed a nitric oxide effect hidden by lateral root density alone.

Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Low phosphorus increased root diameter by 9%.

Taxon: Arabidopsis thalianaArabidopsis thalianat0
Treatment: Low phosphoruse6
Outcome: root diametere6
Direction: increasee6
Value: 9%e6

Not reportedComparator

Verbatim

e6
“Low phosphorus significantly changed root anatomy, causing a 9% increase in root diameter, a 31% decrease in the cross‐sectional area of individual trichoblasts, a 40% decrease in the cross‐sectional area of individual atrichoblasts, and 45% more cortical cells in cross‐section”
✓ located verbatim in the source · abstract, characters 1371–1649

t0
“Regulation of root hair density by phosphorus availability in Arabidopsis thaliana”
✓ located verbatim in the source · title, characters 0–82

Title

Regulation of root hair density by phosphorus availability in Arabidopsis thaliana

Z. Ma; D. G. Bielenberg; K. M. Brown; et al. Plant Cell & Environment 2001. doi:10.1046/j.1365-3040.2001.00695.x

Other claims from this paper (14)

Intervention effect Root hair density was about five times greater in low phosphorus media than in high phosphorus media.
Intervention effect Root hair density decreased logarithmically as phosphorus concentration increased within the tested range.
Intervention effect Root hair density increased under deficiencies of other nutrients, but less strongly than under low phosphorus.
Intervention effect Indoleacetic acid increased root hair density under high phosphorus but had very little effect under low phosphorus.
Intervention effect The auxin transport inhibitor CMPA increased root hair density under high phosphorus but had very little effect under low phosphorus.
Intervention effect The ethylene precursor ACC increased root hair density under high phosphorus but had very little effect under low phosphorus.
Intervention effect The ethylene synthesis inhibitor AOA increased root hair density under high phosphorus but had very little effect under low phosphorus.
Intervention effect Low phosphorus decreased the cross-sectional area of individual trichoblasts by 31%.
Intervention effect Low phosphorus decreased the cross-sectional area of individual atrichoblasts by 40%.
Intervention effect Low phosphorus increased the number of cortical cells in cross-section by 45%.
Intervention effect Low phosphorus increased the number of trichoblast files from eight to 12.
Mechanism Two-thirds of the increase in root hair density under low phosphorus was caused by a higher likelihood of trichoblasts forming hairs.
Mechanism Changes in root anatomy under low phosphorus accounted for 33% of the increase in root hair density.
Intervention effect Initial root hairs were not sensitive to phosphorus availability.

“decrease in density”

Claim types

Direction of the findings

Over time

Claim type

Research area

Polarity

Statistics