View: List Claim type Research area Organism Taxon as written Decade Paper Molecular Characterization of a Family of Tandemly Repeated DNA Sequences, TR-1, in Heterochromatic Knobs of Maize and Its Relatives 5 Show all 5 → Mechanism hypothesis original result basis n/a Claim · model-written summary
B' may have originated from B through lateral amplification accompanied by base-pair changes (author interpretation).
originate from B through lateral amplification accompanied by base-pair changes e4 Verbatim
e2 “we isolated 59 clones belonging to the TR-1 family from maize and teosinte ”
✓ located verbatim in the source · abstract, characters 103–177 e4 “B' may originate from B through lateral amplification accompanied by base-pair changes ”
✓ located verbatim in the source · abstract, characters 671–757 Other claims from this paper (8) Mechanism hypothesis original result basis n/a Claim · model-written summary
The B component may have evolved from the 180-bp knob repeat through mutations during evolution (author interpretation).
as a result of mutations during evolution e3 Verbatim
e2 “we isolated 59 clones belonging to the TR-1 family from maize and teosinte ”
✓ located verbatim in the source · abstract, characters 103–177 e3 “the B component may evolve from the 180-bp knob repeat as a result of mutations during evolution ”
✓ located verbatim in the source · abstract, characters 569–665 Other claims from this paper (8) Mechanism hypothesis original result basis n/a Claim · model-written summary
C plus A may be a single sequence added to B and B', probably via nonhomologous recombination (author interpretation).
probably via nonhomologous recombination e5 Verbatim
e2 “we isolated 59 clones belonging to the TR-1 family from maize and teosinte ”
✓ located verbatim in the source · abstract, characters 103–177 e5 “C plus A may be a single sequence that is added to B and B', probably via nonhomologous recombination ”
✓ located verbatim in the source · abstract, characters 763–864 Other claims from this paper (8) Meiotic Drive of Chromosomal Knobs Reshaped the Maize Genome 4 Show all 4 → Mechanism author interpretation original result measured Claim · model-written summary
Transposition may influence knob evolution.
evolution of knobs e0 Not reported Direction
Verbatim
e0 “environmental factors and transposition may play a role in the evolution of knobs . ”
✓ located verbatim in the source · abstract, characters 1122–1204 t0 “Maize ”
✓ located verbatim in the source · title, characters 48–53 Other claims from this paper (6) Mechanism author interpretation original result measured Claim · model-written summary
Environmental factors may influence knob evolution.
evolution of knobs e0 environmental factors e0 Not reported Direction
Verbatim
e0 “environmental factors and transposition may play a role in the evolution of knobs . ”
✓ located verbatim in the source · abstract, characters 1122–1204 t0 “Maize ”
✓ located verbatim in the source · title, characters 48–53 Other claims from this paper (6) Mechanism author interpretation original result measured Claim · model-written summary
Authors propose meiotic drive can cause rapid genome structural and diversity change.
changes in genome structure and diversity e0 Verbatim
e0 “Meiotic drive may be a major force of genome evolution, allowing revolutionary changes in genome structure and diversity over short evolutionary periods. ”
✓ located verbatim in the source · abstract, characters 1432–1585 t0 “Maize ”
✓ located verbatim in the source · title, characters 48–53 Other claims from this paper (6) Independently Regulated Neocentromere Activity of Two Classes of Tandem Repeat Arrays 3 Show all 3 → Mechanism author interpretation original result measured Claim · model-written summary
Authors suggest microtubule-based motors mediate neocentromere motility.
microtubule-based motors e1 Verbatim
e0 “In maize, genes on abnormal chromosome 10 induce the tandem repeats that make up knobs to move poleward on the meiotic spindle ”
✓ located verbatim in the source · abstract, characters 104–230 e1 “suggesting that the mechanism of motility involves microtubule-based motors ”
✓ located verbatim in the source · abstract, characters 658–733 Other claims from this paper (5) Mechanism observed original result measured Claim · model-written summary
At least two repeat-specific activators control neocentromere motility in trans.
repeat-specific activators e1 Verbatim
e0 “In maize, genes on abnormal chromosome 10 induce the tandem repeats that make up knobs to move poleward on the meiotic spindle ”
✓ located verbatim in the source · abstract, characters 104–230 e1 “their motility is controlled in trans by at least two repeat-specific activators ”
✓ located verbatim in the source · abstract, characters 449–529 Other claims from this paper (5) Mechanism author interpretation original result measured Claim · model-written summary
Microtubule dynamics contributed little to neocentromere movement despite taxol.
movement of neocentromeres e1 Microtubule dynamics appear to contribute little e1 Verbatim
e0 “In maize, genes on abnormal chromosome 10 induce the tandem repeats that make up knobs to move poleward on the meiotic spindle ”
✓ located verbatim in the source · abstract, characters 104–230 e1 “Microtubule dynamics appear to contribute little to the movement of neocentromeres (they are active in the presence of taxol) ”
✓ located verbatim in the source · abstract, characters 531–656 Other claims from this paper (5) Neocentromere-mediated Chromosome Movement in Maize 2 Show all 2 → Mechanism author interpretation original result basis n/a Claim · model-written summary
Microtubule depolymerization is not required for neocentromere motility.
neocentromere motility e6 microtubule depolymerization is not required e6 Verbatim
e0 “In maize, neocentromeres are induced by a gene or genes on Abnormal chromosome 10 (Ab10) which causes heterochromatic knobs to move poleward at meiotic anaphase ”
✓ located verbatim in the source · abstract, characters 83–243 e6 “These data suggest that microtubule depolymerization is not required for neocentromere motility ”
✓ located verbatim in the source · abstract, characters 1241–1336 Other claims from this paper (8) Mechanism author interpretation original result basis n/a Claim · model-written summary
Neocentromeres are mobilized on microtubules by minus end-directed motor proteins.
mobilized on microtubules e7 minus end-directed motor proteins e7 Verbatim
e0 “In maize, neocentromeres are induced by a gene or genes on Abnormal chromosome 10 (Ab10) which causes heterochromatic knobs to move poleward at meiotic anaphase ”
✓ located verbatim in the source · abstract, characters 83–243 e7 “We argue that neocentromeres are mobilized on microtubules by the activity of minus end-directed motor proteins ”
✓ located verbatim in the source · abstract, characters 1338–1449 Other claims from this paper (8) PRINS-Labeled Knobs Are Not Associated with Increased Chromosomal Stickiness in the Maize st1 Mutant 2 Show all 2 → Mechanism author interpretation original result negative measured Claim · model-written summary
The authors interpret increased stickiness as involving both knob and nonknob chromosome regions.
chromosomal stickiness e0 stickiness of knob and nonknob chromosomal regions e0 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 Other claims from this paper (6) Mechanism hypothesis original result measured Claim · model-written summary
The mechanism of st1 stickiness is hypothesized to differ from other reported sticky chromosome cases.
mechanism responsible for the st1 mutant e0 other previously described sticky chromosomes situations e0 Verbatim
e0 “The mechanism responsible for the st1 mutant, therefore, is hypothesized to be different from that implicated in the other previously described sticky chromosomes situations ”
✓ located verbatim in the source · abstract, characters 1099–1272 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 Other claims from this paper (6) CAUSES AND CONSEQUENCES OF DNA CONTENT VARIATION IN ZEA 2 Show all 2 → Mechanism author interpretation original result basis n/a Claim · model-written summary
The authors proposed intragenomic conflict between B chromosomes and heterochromatic knobs in maize landraces.
intragenomic conflict e0 Bs and heterochromatic knobs e0 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 Other claims from this paper (10) Mechanism author interpretation original result measured Claim · model-written summary
Differences in knob heterochromatin and retrotransposon DNA were attributed as the main sources of genome size variation in Zea .
differences in the heterochromatin located in the knobs and to the amount of interspersed DNA from retrotransposons e0 Verbatim
e0 “This variation is mainly attributed to differences in the heterochromatin located in the knobs and to the amount of interspersed DNA from retrotransposons. ”
✓ located verbatim in the source · abstract, characters 610–765 t0 “ZEA ”
✓ located verbatim in the source · title, characters 52–55 Other claims from this paper (10) Complex structure of knobs and centromeric regions in maize chromosomes. 2 Show all 2 → Mechanism author interpretation original result measured Claim · model-written summary
Maize knobs may be considered megatransposable elements.
maize knob may be consider as megatransposable elements e0 knob polymorphism and complex structure e0 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 Other claims from this paper (13) Mechanism author interpretation original result measured Claim · model-written summary
Interspersed retrotransposable elements and tandem repeats may be a basic feature of eukaryotic heterochromatin organization.
heterochromatin organization for eukaryotes e0 interspersion of retrotransposable elements among blocks of tandem repeats e0 Verbatim
e0 “interspersion of retrotransposable elements among blocks of tandem repeats in maize and some other organisms suggests that this pattern may be basic to heterochromatin organization for eukaryotes ”
✓ located verbatim in the source · abstract, characters 1904–2099 t0 “maize ”
✓ located verbatim in the source · title, characters 54–59 Other claims from this paper (13) Higher order repeat structures reflect diverging evolutionary paths in maize centromeres and knobs 2 Show all 2 → Mechanism hypothesis original result measured Claim · model-written summary
The repeat units in knobs likely promote unequal crossing over, enabling rapid knob expansion.
rapid knob expansion e0 unequal crossing over e0 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 Other claims from this paper (9) Mechanism hypothesis original result measured Claim · model-written summary
The repeat units may harbor motifs recognized by trans-acting factors involved in meiotic drive.
motifs recognized by trans-acting factors e0 Verbatim
t0 “maize ”
✓ located verbatim in the source · title, characters 71–76 e0 “may harbor motifs recognized by trans-acting factors involved in meiotic drive ”
✓ located verbatim in the source · abstract, characters 1487–1565 Other claims from this paper (9) Genomic affinities revealed by GISH suggests intergenomic restructuring between parental genomes of the paleopolyploid genus Zea 1 Show all 1 → Mechanism author interpretation original result measured Claim · model-written summary
The absence of hybridization signals in all maize knobs indicates that these heterochromatic regions were lost during Z. perennis genome evolution.
absence of hybridization signals in all maize knobs e7 heterochromatic regions were lost during the Z. perennis genome evolution e7 Verbatim
e7 “the absence of hybridization signals in all maize knobs indicate that these heterochromatic regions were lost during the Z. perennis genome evolution ”
✓ located verbatim in the source · abstract, characters 1666–1815 Other claims from this paper (9) Alanine Zipper-Like Coiled-Coil Domains Are Necessary for Homotypic Dimerization of Plant GAGA-Factors in the Nucleus and Nucleolus 1 Show all 1 → Mechanism author interpretation original result simulated Claim · model-written summary
Predicted salt bridges and hydrogen bonds form an interaction domain differing from the classical zipper model.
interaction domain e0 Interhelical salt bridges and charge-stabilized hydrogen bonds e0 Verbatim
e0 “Interhelical salt bridges and charge-stabilized hydrogen bonds between acidic and basic residues of the two monomers are predicted to form an interaction domain, which does not follow the classical knobs -into-holes zipper model. ”
✓ located verbatim in the source · abstract, characters 1036–1264 e1 “from Arabidopsis thaliana ”
✓ located verbatim in the source · abstract, characters 432–457 Other claims from this paper (7) 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.
Zea mays
Zea
Arabidopsis thaliana