Refine

Claim type

Research area

Polarity

Statistics

More filters

Observation 253

Show all 253 →
Observationobservedoriginal resultmeasured

Claim · model-written summary

Maize knobs contain 180-bp repeats, TR1 repeats, or both.

Taxon
maizeZea mayst0
Outcome
knobse0

Verbatim

e0

“knobs may be composed of either 180-bp or TR1, or both repeats”

✓ located verbatim in the source · abstract, characters 1510–1572
t0

“maize”

✓ located verbatim in the source · title, characters 54–59

Title

Complex structure of knobs and centromeric regions in maize chromosomes.

E V Ananiev; R L Phillips; H W Rines PubMed 2000

Other claims from this paper (13)
Observationobservedoriginal resultmeasured

Claim · model-written summary

Chromosomes had conspicuous heterochromatic knobs.

Taxon
husk tomatot0
Outcome
conspicuous heterochromatic knobse0

Verbatim

e0

“The chromosomes of this species are characterized by conspicuous heterochromatic knobs”

✓ located verbatim in the source · abstract, characters 336–422
t0

“Husk Tomato”

✓ located verbatim in the source · title, characters 41–52

Title

Overview of the Genetics and Breeding of Husk Tomato

Carlos F. Quiros HortScience 1984. doi:10.21273/hortsci.19.6.872

Other claims from this paper (6)
Observationobservedoriginal resultmeasured

Claim · model-written summary

Mapped maize knobs lie in gene-dense genomic regions.

Taxon
maizeZea mayse0
Outcome
knobs lie in gene-dense regionse0

Verbatim

e0

“The data show that knobs lie in gene-dense regions of the maize genome”

✓ located verbatim in the source · abstract, characters 615–685

Title

Maize chromosomal knobs are located in gene-dense areas and suppress local recombination

Rashin Ghaffari; Ethalinda K. S. Cannon; Lisa B. Kanizay; et al. Chromosoma 2012. doi:10.1007/s00412-012-0391-8

Other claims from this paper (3)

Association 43

Show all 43 →
Associationauthor interpretationoriginal resultsimulated

Claim · model-written summary

Simulations suggested knobs may be deleterious without Ab10.

Taxon
maizeZea mayst0
Gene
Ab10e0
Outcome
knobs might be deleteriouse0

Not reportedDirection

Verbatim

e0

“Simulations were used to illustrate the dynamics of this meiotic drive model and suggest knobs might be deleterious in the absence of Ab10.”

✓ located verbatim in the source · abstract, characters 582–721
t0

“Maize”

✓ located verbatim in the source · title, characters 48–53

Title

Meiotic Drive of Chromosomal Knobs Reshaped the Maize Genome

Edward S Buckler; Tara L Phelps-Durr; Carlyn S Keith Buckler; et al. Genetics 1999. doi:10.1093/genetics/153.1.415

Other claims from this paper (6)
Associationobservedoriginal resultmeasured

Claim · model-written summary

Large knobs locally reduce crossing over by as much as twofold on a cM/Mb scale.

Taxon
MaizeZea mayst0
Material
large knobse0
Outcome
crossing overe0
Direction
reducee0
Value
twofolde0

Verbatim

e0

“large knobs can locally reduce crossing over by as much as twofold on a cM/Mb scale”

✓ located verbatim in the source · abstract, characters 795–878
t0

“Maize”

✓ located verbatim in the source · title, characters 0–5

Title

Maize chromosomal knobs are located in gene-dense areas and suppress local recombination

Rashin Ghaffari; Ethalinda K. S. Cannon; Lisa B. Kanizay; et al. Chromosoma 2012. doi:10.1007/s00412-012-0391-8

Other claims from this paper (3)
Associationobservedoriginal resultmeasured

Claim · model-written summary

B chromosomes and heterochromatic knobs had a negative relationship in maize landraces.

Taxon
maizeZea mayse1
Outcome
Bse0
Direction
negative relationshipe0
Comparator
heterochromatic knobse0

Verbatim

e0

“the negative relationship found between Bs and heterochromatic knobs”

✓ located verbatim in the source · abstract, characters 1463–1531
e1

“native Argentinian and Bolivian maize landraces”

✓ located verbatim in the source · abstract, characters 232–279

Title

CAUSES AND CONSEQUENCES OF DNA CONTENT VARIATION IN ZEA

G.E. González; M.F. Realini; M.F. Fourastié; et al. Journal of Basic and Applied Genetics 2022. doi:10.35407/bag.2022.33.01.03

Other claims from this paper (10)

Intervention effect 41

Show all 41 →
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Methyl alcohol pretreatment was effective in revealing centromeres, heterochromatin and knobs in prophase chromosomes.

Treatment
methyl alcohol pretreatmente1
Outcome
revealing centromeres, heterochromatin, and knobse1
Direction
effectivee1

Not reportedTaxonComparator

Verbatim

e1

“For prophase studies, methyl alcohol pretreatment was found effective in revealing centromeres, heterochromatin, and knobs”

✓ located verbatim in the source · abstract, characters 270–392

Title

Acetic Acid Methods for Chromosome Studies at Prophase and Metaphase in Meristems

Joseph G. O'mara Stain Technology 1948. doi:10.3109/10520294809106249

Other claims from this paper (2)
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

A. japonica did not form knobs after antibiotic or heat treatment.

Taxon
theA. japonicae0
Treatment
antibiotics or by heat treatmente0
Outcome
knobs are never formede0

Not reportedComparatorDirection

Verbatim

e0

“theA. japonica which is closely affined to them and non-leaf-nodular plant, knobs are never formed either by antibiotics or by heat treatment”

✓ located verbatim in the source · abstract, characters 336–477

Title

Studies on the Leaf Nodules V The Formation of Knobs by the Effect of Antibiotics on theArdisia crispa andA. punctata

Tamotsu YAMADA Shokubutsugaku Zasshi 1955. doi:10.15281/jplantres1887.68.267

Other claims from this paper (8)
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

smd1 causes a quantitative reduction in the mobility of knobs on the meiotic spindle in maize.

Taxon
maizeZea mayst0
Treatment
smd1e3
Gene
smd1e3
Outcome
mobility of knobs on the meiotic spindlee3
Direction
reductione3

Not reportedComparator

Verbatim

t0

“centromeric activity in maize”

✓ located verbatim in the source · title, characters 13–42
e3

“smd1 causes a quantitative reduction in the mobility of knobs on the meiotic spindle”

✓ located verbatim in the source · abstract, characters 417–501

Title

Induction of centromeric activity in maize by suppressor of meiotic drive 1.

R K Dawe; W Z Cande Proceedings of the National Academy of Sciences 1996. doi:10.1073/pnas.93.16.8512

Other claims from this paper (3)

Mechanism 35

Show all 35 →
Mechanismobservedoriginal resultmeasured

Claim · model-written summary

Only one neocentromere activating region is sufficient to move many knobs.

Taxon
MaizeZea mayst0
Outcome
move many knobse0
Qualifier
one of the neocentromere-activating regionse0

Verbatim

t0

“Maize”

✓ located verbatim in the source · title, characters 67–72
e0

“only one of the neocentromere-activating regions is sufficient to move many knobs”

✓ located verbatim in the source · abstract, characters 642–723

Title

Four Loci on Abnormal Chromosome 10 Contribute to Meiotic Drive in Maize

Evelyn N Hiatt; R Kelly Dawe Genetics 2003. doi:10.1093/genetics/164.2.699

Other claims from this paper (6)
Mechanismauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors proposed intragenomic conflict between B chromosomes and heterochromatic knobs in maize landraces.

Taxon
maizeZea mayse1
Outcome
intragenomic conflicte0
Qualifier
Bs and heterochromatic knobse0

Verbatim

e0

“the negative relationship found between Bs and heterochromatic knobs allowed us to propose the existence of an intragenomic conflict between these elements.”

✓ located verbatim in the source · abstract, characters 1463–1619
e1

“native Argentinian and Bolivian maize landraces”

✓ located verbatim in the source · abstract, characters 232–279

Title

CAUSES AND CONSEQUENCES OF DNA CONTENT VARIATION IN ZEA

G.E. González; M.F. Realini; M.F. Fourastié; et al. Journal of Basic and Applied Genetics 2022. doi:10.35407/bag.2022.33.01.03

Other claims from this paper (10)
Mechanismhypothesisoriginal resultmeasured

Claim · model-written summary

The repeat units in knobs likely promote unequal crossing over, enabling rapid knob expansion.

Taxon
maizeZea mayst0
Outcome
rapid knob expansione0
Qualifier
unequal crossing overe0

Verbatim

t0

“maize”

✓ located verbatim in the source · title, characters 71–76
e0

“These repeat units likely promote unequal crossing over, enabling rapid knob expansion”

✓ located verbatim in the source · abstract, characters 1395–1481

Title

Higher order repeat structures reflect diverging evolutionary paths in maize centromeres and knobs

Rebecca D. Piri; Mingyu Wang; M. Cinta Romay; et al. Genome biology 2026. doi:10.1186/s13059-026-03993-4

Other claims from this paper (9)

Method / resource 15

Show all 15 →
Method / resourceobservedoriginal resultbasis n/a

Claim · model-written summary

The HSY map covers all four HSY-specific Knobs.

Taxon
PapayaCarica papayae1
Outcome
HSY-specific Knobse0
Value
foure0

Verbatim

e0

“covers all four HSY-specific Knobs”

✓ located verbatim in the source · abstract, characters 946–980
e1

“Papaya is a major fruit crop”

✓ located verbatim in the source · abstract, characters 12–40

Title

Construction of physical maps for the sex-specific regions of papaya sex chromosomes

Jong-Kuk Na; Jianping Wang; Jan E Murray; et al. BMC Genomics 2012. doi:10.1186/1471-2164-13-176

Other claims from this paper (10)
Method / resourceobservedoriginal resultmeasured

Claim · model-written summary

Quercus bicolor swamp forest sites were mapped in Kentucky Bluegrass and Knobs regions.

Taxon
Quercus bicolorQuercus bicolore0
Outcome
distribution of swamp forest sitese0
Setting
Bluegrass and Knobs regions of Kentuckye0

Not reportedComparatorValue

Verbatim

e0

“The distribution of swamp forest sites as indicated by Quercus bicolor is mapped for the Bluegrass and Knobs regions of Kentucky.”

✓ located verbatim in the source · abstract, characters 0–129

Title

Swamp Forests on High Terrace Deposits in the Bluegrass and Knobs Regions of Kentucky

Leslie E. Meade; W. Meijer; Julian Campbell; et al. ScholarWorks - MoreheadState (Morehead State University) 1981

Other claims from this paper (5)
Method / resourceobservedoriginal resultpositivemeasured

Claim · model-written summary

The data reveal internal structure of seven centromeres and five heterochromatic knobs.

Taxon
maizeZea mayse0
Outcome
internal structure of seven centromeres and five heterochromatic knobse1
Value
seven centromerese1

Verbatim

e0

“a maize genome (B73-Ab10)”

✓ located verbatim in the source · abstract, characters 202–227
e1

“The data also reveal the internal structure of seven centromeres and five heterochromatic knobs”

✓ located verbatim in the source · abstract, characters 418–513

Title

Gapless assembly of maize chromosomes using long-read technologies

Jianing Liu; Arun S. Seetharam; Kapeel Chougule; et al. Genome biology 2020. doi:10.1186/s13059-020-02029-9

Other claims from this paper (5)

Recommendation 3

Show all 3 →
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

To maintain the features of Estonian inland sand knob plant communities, they must be kept open and the dense bottom layer vegetation removed in some places.

Taxon
Estonian inland sand knobs plant communitiese7
Outcome
kept opene7
Qualifier
dense bottom layer vegetation must be removede7

Verbatim

e7

“To maintain the peculiar features of Estonian inland sand knobs plant communities they must be kept open and in some places also the dense bottom layer vegetation must be removed”

✓ located verbatim in the source · abstract, characters 1593–1771

Title

On sand knobs vegetation in Verhulitsa-Lutepää region, South-Eastern Estonia

Jaanus Paal; Kaie Kurg; Taimi Paal Forestry Studies / Metsanduslikud Uurimused 2008. doi:10.2478/v10132-011-0065-y

Other claims from this paper (7)
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors support biofertilizer and algae extract with compost for organic kohlrabi production and quality.

Outcome
organic production of kohlrabi and for improving yield and knobs qualitye0

Verbatim

e0

“using biofertilizer and algae extract in addition to compost for organic production of kohlrabi and for improving yield and knobs quality.”

✓ located verbatim in the source · abstract, characters 1038–1176

Title

Enhancing the organic production of kohlrabi using algae extract and biofertilizers

Abou-El-Hassan, Saad; Salem, Emad Abdel Aziz; El-Batran, Heba Said; et al. Zenodo (CERN European Organization for Nuclear Research) 2020. doi:10.5281/zenodo.4319573

Other claims from this paper (7)
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors support biofertilizer and algae extract alongside compost for organic kohlrabi production and improved yield and knob quality.

Outcome
organic production of kohlrabi and for improving yield and knobs qualitye0

Verbatim

e0

“using biofertilizer and algae extract in addition to compost for organic production of kohlrabi and for improving yield and knobs quality”

✓ located verbatim in the source · abstract, characters 1038–1175

Title

Enhancing the organic production of kohlrabi using algae extract and biofertilizers

Saad Abou-El-Hassan; Emad Abdel Aziz Salem; Heba Said El-Batran; et al. GSC Advanced Research and Reviews 2020. doi:10.30574/gscarr.2020.5.2.0093

Other claims from this paper (4)

Lexical search (BM25). All words must match; if nothing does, any word. Organism names also match every spelling of the same organism. No semantic search yet.