Search claims · PlantClaims

Mechanismauthor interpretationoriginal resultno effectmeasured

Claim · model-written summary

In highly compacted soil, none of the four VAM fungi produced an observable mycorrhizal growth response; authors attributed this to oxygen decline, pore changes and possible ethylene production.

Taxon: Trifolium subterraneumTrifolium subterraneumt0
Treatment: highly compacted soile0
Outcome: mycorrhizal growth responsee0
Direction: absencee0
Qualifier: significant decrease in the O 2 content of the soil atmosphere, change in soil pore size distribution and, presumably, to ethylene productione0

Verbatim

e0
“The absence of any observable mycorrhizal growth response to any of the four species of VAM fungi in highly compacted soil (bulk density = 1·75 Mg m −3 ) was attributed to the significant decrease in the O 2 content of the soil atmosphere, change in soil pore size distribution and, presumably, to ethylene production.”
✓ located verbatim in the source · abstract, characters 1448–1766

t0
“Trifolium subterraneum”
✓ located verbatim in the source · title, characters 62–84

Title

Effects of soil compaction on phosphorus uptake and growth of Trifolium subterraneum colonized by four species of vesicular–arbuscular mycorrhizal fungi

H. NADIAN; S. E. SMITH; A. M. ALSTON; et al. New Phytologist 1998. doi:10.1046/j.1469-8137.1998.00219.x

Other claims from this paper (10)

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

High nitrate did not change amino acid composition.

Taxon: Arabidopsis thalianaArabidopsis thalianat0
Treatment: 10 m m KNO 3e0
Outcome: amino acid compositione0
Direction: no changee0
Comparator: 0.5 m m KNO 3e1

Verbatim

e0
“Fourteen‐day‐old 10 m m KNO 3 ‐grown plants displayed a decrease in number, length and density of lateral roots, had the highest tissue NO 3 – content, but no change in amino acid composition.”
✓ located verbatim in the source · abstract, characters 366–558

e1
“compared to plants grown on 0.5 m m KNO 3”
✓ located verbatim in the source · abstract, characters 322–363

t0
“Arabidopsis thaliana”
✓ located verbatim in the source · title, characters 92–112

Title

Transcription factor genes with expression correlated to nitrate‐related root plasticity of Arabidopsis thaliana

T. J. TRANBARGER; Y. AL‐GHAZI; B. MULLER; et al. Plant Cell & Environment 2003. doi:10.1046/j.1365-3040.2003.00977.x

Other claims from this paper (8)

Intervention effect High nitrate decreased lateral root number, length and density.
Intervention effect High nitrate plants had the highest tissue nitrate content.
Observation Lateral root development arrested after primordium initiation and before emergence.
Intervention effect Glutamine supplementation slightly increased lateral root primordium and root number and density.
Intervention effect Glutamine supplementation lowered root nitrate content.
Intervention effect Glutamine supplementation increased tissue glutamine content.
Association A bZIP transcription factor gene was identified with root-preferential expression correlated with the nitrate root response.
Association A LIM transcription factor gene was identified with root-preferential expression correlated with the nitrate root response.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Increasing N supply affected the number of root apices only to a very small degree.

Taxon: T. aestivume3
Treatment: Increasing N supplye2
Outcome: number of apicese1
Direction: affected only to a very small degreee1

Not reportedComparator

Verbatim

e1
“The number of apices was affected only to a very small degree”
✓ located verbatim in the source · abstract, characters 1497–1558

e2
“Increasing N supply changes root growth as follows: decline in root dry matter, increase in shoot/root ratio of dry weight, decrease in number of seminal roots, shortening of axes and more laterals, increase in diameter of the laterals and less significantly of the main roots, increase in density of laterals, decline in root surface area”
✓ located verbatim in the source · abstract, characters 1156–1495

e3
“The old T. aestivum cultivars had more seminal roots”
✓ located verbatim in the source · abstract, characters 701–753

Title

Untersuchungen zum Wurzelwachstum von Jungpflanzen alter und neuer Winterweizensorten sowie eines Spelzweizens bei variierter N‐Versorgung

B. Feil; G. Geisler Journal of Agronomy and Crop Science 1988. doi:10.1111/j.1439-037x.1988.tb00666.x

Other claims from this paper (13)

Association Root growth did not differ significantly between old and new winter wheat cultivars.
Association Old wheat cultivars had more seminal roots.
Association The longest roots of modern wheat cultivars penetrated into deeper layers of the substrate.
Intervention effect Increasing N supply declined root dry matter.
Intervention effect Increasing N supply increased the shoot/root ratio of dry weight.
Intervention effect Increasing N supply decreased the number of seminal roots.
Intervention effect Increasing N supply shortened the axes of wheat roots.
Intervention effect Increasing N supply produced more laterals.
Intervention effect Increasing N supply increased the diameter of the laterals.
Intervention effect Increasing N supply increased the density of laterals.
Intervention effect Increasing N supply declined the root surface area.
Association Modern wheat cultivars were not superior to old cultivars in tolerating toxic concentrations of NH 4 NO 3.
Association Old wheat cultivars were not better adapted to low N fertilization.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Aphid (Myzus persicae) population was unaffected by any of the AMF and UV-B treatments.

Taxon: LettuceLactuca sativae1
Treatment: AMF inoculation and UV-B exposuree0
Interactor: Myzus persicaeMyzus persicaee0pest
Outcome: Aphid populatione7
Direction: no_changeinferrede7

Not reportedComparator

Verbatim

e1
“Lettuce plants subjected to UV-B radiation showed an increase in callose and oxidative stress indicators, as well as a decrease in stomatal density”
✓ located verbatim in the source · abstract, characters 524–671

e7
“Aphid population was unaffected by any of the treatments, implying a neutral plant response”
✓ located verbatim in the source · abstract, characters 1372–1463

e0
“lettuce plant response to AMF inoculation and UV-B exposure (0.4 W m−2; 16 h d−1; 2 weeks), either together or individually, as well as the interaction with the polyphagous insect pest Myzus persicae (Sulzer)”
✓ located verbatim in the source · abstract, characters 314–522

Title

Leaf UV-B Irradiation and Mycorrhizal Symbionts Affect Lettuce VOC Emissions and Defence Mechanisms, but Not Aphid Feeding Preferences

Valeria Zeni; Arianna Grassi; Marco Santin; et al. Insects 2022. doi:10.3390/insects14010020

Other claims from this paper (10)

Intervention effect UV-B increased callose and oxidative stress indicators in lettuce.
Intervention effect UV-B decreased stomatal density in lettuce.
Intervention effect Mycorrhizal colonization cancelled out the UV-B effect on lettuce stomatal density.
Intervention effect The symbiosis was not affected by UV-B treatment.
Intervention effect Mycorrhization had no significant effect on the lettuce volatilome, regardless of UV-B treatment.
Intervention effect UV-B significantly altered lettuce plant volatile emission.
Intervention effect The 1-undecene abundance increased under UV-B with mycorrhization (+M/+UVB: 48.0 ± 7.78%).
Intervention effect The decanal content decreased under UV-B with mycorrhization (+M/+UVB: 8.50 ± 3.90%).
Intervention effect The undecanal content decreased under UV-B with mycorrhization (+M/+UVB: 2.1 ± 0.65%).
Intervention effect The sesquiterpene hydrocarbons decreased under UV-B with mycorrhization (+M/+UVB: 18.0 ± 9.62 %).

“decrease in density”

Claim types

Direction of the findings

Over time

Claim type

Research area

Polarity

Statistics