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“decrease in density”

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Organism: Arabidopsis ✕

Associationobservedoriginal resultmeasured

Claim · model-written summary

As ICK2/KRP2 levels decrease, the increase in Arabidopsis lateral root density depends on CYCD2;1.

Taxon: ArabidopsisArabidopsist0
Treatment: ICK2/KRP2 levels decreasee5
Gene: CYCD2;1e5
Outcome: lateral root densitye5
Direction: increasee5

Verbatim

t0
“The Arabidopsis D-Type Cyclin CYCD2;1”
✓ located verbatim in the source · title, characters 0–37

e5
“as ICK2/KRP2 levels decrease, the increase in lateral root density depends on CYCD2;1”
✓ located verbatim in the source · abstract, characters 1135–1220

Title

The Arabidopsis D-Type Cyclin CYCD2;1 and the Inhibitor ICK2/KRP2 Modulate Auxin-Induced Lateral Root Formation

Luis Sanz; Walter Dewitte; Celine Forzani; et al. The Plant Cell 2011. doi:10.1105/tpc.110.080002

Other claims from this paper (10)

Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

CYCD4;1 is required for normal lateral root density, so density decreases without it.

Taxon: ArabidopsisArabidopsist0
Gene: CYCD4;1e2
Outcome: LR densitye2
Direction: decreaseinferrede2

Verbatim

t0
“modulates lateral root density in Arabidopsis”
✓ located verbatim in the source · title, characters 26–71

e2
“CYCD4;1 is expressed in meristematic pericycle protoxylem poles and is required for normal LR density”
✓ located verbatim in the source · abstract, characters 461–562

Title

The D-type cyclin CYCD4;1 modulates lateral root density in Arabidopsis by affecting the basal meristem region

Jeroen Nieuwland; Spencer Maughan; Walter Dewitte; et al. Proceedings of the National Academy of Sciences 2009. doi:10.1073/pnas.0906354106

Other claims from this paper (13)

Observation CYCD4;1 is expressed in meristematic pericycle protoxylem poles.
Intervention effect Cycd4;1 mutants have longer pericycle basal meristem cells.
Intervention effect Cycd4;1 mutants show a displacement of the apical/basal meristem boundary in the pericycle.
Intervention effect In Cycd4;1 mutants, other cell layers, overall meristem size and root growth are unaffected.
Intervention effect Low concentrations of applied auxin rescue the pericycle cell length and LR density phenotypes of cycd4;1.
Mechanism The basal meristem has a role in determining LR density.
Association Stimulation is unimpaired in cycd4;1 mutants.
Mechanism CYCD4;1 is required for normal spacing of lateral roots but not for their initiation.
Mechanism CYCD4;1 is rate-limiting for sucrose-dependent lateral root formation.
Observation CYCD4;1 expression is sucrose-dependent.
Intervention effect Wild-type roots fully phenocopy cycd4;1 in the absence of sucrose.
Mechanism CYCD4;1 links meristem pericycle cell behaviour to LR density, consistent with a basal meristem prepatterning model.
Mechanism D-type cyclins can confer division potential of defined cell types through cell-specific expression patterns.

Associationobservedoriginal resultmeasured

Claim · model-written summary

Size-symmetric competition produced more biomass at a given density than size-asymmetric competition.

Taxon: ArabidopsisArabidopsise0
Outcome: biomasse1
Direction: moree1
Qualifier: at a given densitye1
Comparator: size-asymmetric competitione1

Verbatim

e0
“Using transgenic Arabidopsis”
✓ located verbatim in the source · abstract, characters 779–807

e1
“This decrease in density-dependent mortality results in more biomass at a given density under size-symmetric compared with size-asymmetric competition.”
✓ located verbatim in the source · abstract, characters 1028–1179

Title

Size symmetry of competition alters biomass–density relationships

Peter Stoll; Jacob Weiner; Helene Muller-Landau; et al. Proceedings of the Royal Society B Biological Sciences 2002. doi:10.1098/rspb.2002.2137

Other claims from this paper (2)

Associationobservedoriginal resultmeasured

Claim · model-written summary

In Arabidopsis ecotypes, expression of epi-alleles at these loci decreases as methylation density increases, mainly within the transcribed region.

Taxon: ArabidopsisArabidopsise3
Material: Arabidopsis ecotypese3
Outcome: expression patternse3
Direction: decreaseinferrede3
Qualifier: with methylation densitye3

Verbatim

e3
“Arabidopsis ecotypes contain distinct epi-alleles of these loci with expression patterns that inversely correlate with methylation density, predominantly within the transcribed region”
✓ located verbatim in the source · abstract, characters 1223–1406

Title

Transmission of Epi-Alleles with MET1-Dependent Dense Methylation in Arabidopsis thaliana

Michael Watson; Emily Hawkes; Peter Meyer PLoS ONE 2014. doi:10.1371/journal.pone.0105338

Other claims from this paper (6)

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“decrease in density”

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