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Observation 64

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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

Certain retrotransposable elements preferentially associate with knobs or centromeres.

Taxon
maizeZea mayst0
Outcome
retrotransposable elementse0

Verbatim

e0

“obvious preference for the integration/association of certain retrotransposable elements into knobs or centromere regions”

✓ located verbatim in the source · abstract, characters 832–953
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

Knobs were present on the abaxial surface of Stereospermumkunthianum.

Taxon
Stereospermumkunthianume0
Organ / stage
abaxial surfacee0
Outcome
Knobse0

Verbatim

e0

“Knobs are present on the abaxial and adaxial surfaces ofMarkhamia lutea, Markhamia tomentosa, abaxial surface of Stereospermumkunthianum and adaxial surface of Tabebuia rosea”

✓ located verbatim in the source · abstract, characters 981–1155

Title

Foliar epidermal studies in the family Bignoniaceae JUSS. in Nigeria

G. E. Ugbabe; A. E. Ayodele African Journal of Agricultural Research 2008. doi:10.5897/ajar.9000353

Other claims from this paper (15)

Association 14

Show all 14 →
Associationobservedoriginal resultmeasured

Claim · model-written summary

Knobbed chromosomes formed more micronuclei than chromosomes without knobs.

Taxon
maizeZea mayse2
Gene
knobbed chromosomese0
Outcome
micronucleie1
Direction
moree0
Comparator
chromosomes without knobse0

Verbatim

e0

“knobbed chromosomes form more than do chromosomes without knobs”

✓ located verbatim in the source · abstract, characters 483–546
e1

“micronuclei”

✓ located verbatim in the source · abstract, characters 439–450
e2

“chromosome 6 (NOR) of maize”

✓ located verbatim in the source · abstract, characters 320–347

Title

Chromosome Nondisjunction and Instabilities in Tapetal Cells Are Affected by B Chromosomes in Maize

A Mauricio Chiavarino; Marcela Rosato; Silvia Manzanero; et al. Genetics 2000. doi:10.1093/genetics/155.2.889

Other claims from this paper (11)
Associationobservedoriginal resultmeasured

Claim · model-written summary

Trapping by fungal knobs was inversely associated with nematicide concentration.

Treatment
nematicidee0
Outcome
trapping rate by fungal knobse0
Direction
inverselye0

Not reportedTaxon

Verbatim

e0

“The trapping rate by fungal knobs was inversely correlated to the concentration of the nematicide”

✓ located verbatim in the source · abstract, characters 563–660

Title

Control of the Southern Root-knot Nematode, Meloidogyne incognita Using Granule Formulations Containing Nematode-trapping Fungus, Monacrosporium ellipsosporum and a Nematicide

Satoshi Taba; Zen-ichi Moromizato; Kazuko Takaesu; et al. Japanese Journal of Applied Entomology and Zoology 2006. doi:10.1303/jjaez.2006.115

Other claims from this paper (6)
Associationobservedoriginal resultmeasured

Claim · model-written summary

Knobs tend to exclude retroelements in maize.

Taxon
maizeZea mayse1
Organ / stage
knobse3
Outcome
retroelementse3
Direction
decreaseinferrede3

Verbatim

e1

“Fluorescent in situ hybridization was used to examine the distribution of six abundant long terminal repeat (LTR) retroelements, Opie, Huck, Cinful-1, Prem-2/Ji, Grande, and Tekay/Prem-1 on maize pachytene chromosomes”

✓ located verbatim in the source · abstract, characters 0–217
e3

“The data show that knobs, known to function as facultative neocentromeres when Ab10 is present, tend to exclude retroelements”

✓ located verbatim in the source · abstract, characters 524–649

Title

Distribution of Retroelements in Centromeres and Neocentromeres of Maize

Rebecca J Mroczek; R Kelly Dawe Genetics 2003. doi:10.1093/genetics/165.2.809

Other claims from this paper (5)

Mechanism 14

Show all 14 →
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 resultmeasured

Claim · model-written summary

Maize knobs may be considered megatransposable elements.

Taxon
maizeZea mayst0
Outcome
maize knob may be consider as megatransposable elementse0
Qualifier
knob polymorphism and complex structuree0

Verbatim

e0

“knob polymorphism and complex structure suggest that maize knob may be consider as megatransposable elements”

✓ located verbatim in the source · abstract, characters 1773–1881
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)
Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

The authors interpret increased stickiness as involving both knob and nonknob chromosome regions.

Taxon
maizeZea mayst0
Outcome
chromosomal stickinesse0
Direction
increasee0
Qualifier
stickiness of knob and nonknob chromosomal regionse0

Verbatim

e0

“Thus, the increase in chromosomal stickiness appears to be due to an increase in stickiness of knob and nonknob chromosomal regions”

✓ located verbatim in the source · abstract, characters 966–1097
t0

“PRINS-Labeled Knobs Are Not Associated with Increased Chromosomal Stickiness in the Maize st1 Mutant”

✓ located verbatim in the source · title, characters 0–100

Title

PRINS-Labeled Knobs Are Not Associated with Increased Chromosomal Stickiness in the Maize st1 Mutant

T. C. Tatum Journal of Heredity 2006. doi:10.1093/jhered/esl014

Other claims from this paper (6)

Method / resource 2

Show all 2 →
Method / resourceobservedoriginal resultmeasured

Claim · model-written summary

PRINS-labeled regions corresponded to reported C bands.

Taxon
maizeZea mayst0
Outcome
chromosomal regions labeled by PRINSe0
Comparator
reported C bandse0

Verbatim

e0

“The chromosomal regions labeled by PRINS corresponded to the reported C bands found in these lines”

✓ located verbatim in the source · abstract, characters 537–635
t0

“PRINS-Labeled Knobs Are Not Associated with Increased Chromosomal Stickiness in the Maize st1 Mutant”

✓ located verbatim in the source · title, characters 0–100

Title

PRINS-Labeled Knobs Are Not Associated with Increased Chromosomal Stickiness in the Maize st1 Mutant

T. C. Tatum Journal of Heredity 2006. doi:10.1093/jhered/esl014

Other claims from this paper (6)
Method / resourceobservedoriginal resultmeasured

Claim · model-written summary

Genomic hybridization produced strong, readily identifiable knob signals in the tested maize chromosomes.

Taxon
maizeZea mayse0
Outcome
strong hybridization signalse0
Value
540e0

Not reportedComparator

Verbatim

e0

“The knobs gave strong hybridization signals and easily be identified when mitotic chromosomes from maize inbred 330, DP and alloplasmic pure line 540 which derived from the parthenocarpic progenies of a backcrossed distant hybrid between 330 DP were hybridized with total genomic DNA from Tripsacum dactyloides”

✓ located verbatim in the source · abstract, characters 221–531

Title

Genetic Stability Analysis of Heterochromatic Knob in Progeny of Distant Hybrid Between Maize and Teosint

Han Yong-hua Wuhan University Journal 2003

Other claims from this paper (1)

Recommendation 1

Show all 1 →
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)

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