Abstract
The frequency and pattern of irradiation-induced intergenomic chromosome rearrangements were analysed in the mutagenized (M0) and the first selfed (M1) generations of Triticum aestivum L. - Aegilops biuncialis Vis. amphiploids (2n = 70, AABBDDUbUbMbMb) by multicolour genomic in situ hybridization (mcGISH). mcGISH allowed the simultaneous discrimination of individual Ae. biuncialis genomes and wheat chromosomes. Dicentric chromosomes, fragments, and terminal translocations were most frequently induced by gamma-irradiation, but centric fusions and internal exchanges were also more abundant in the treated plants than in control amphiploids. Rearrangements involving the Ub genome (Ub-type aberrations) were more frequent than those involving the Mb genome (Mb-type aberrations). This irradiation sensitivity of the Ub chromosomes was attributed to their centromeric or near-centromeric regions, since Ub-type centric fusions were significantly more abundant than Mb-type centric fusions at all irradiation doses. Dicentrics completely disappeared, but centric fusions and translocations were well transmitted from M0 to M1. Identification of specific chromosomes involved in some rearrangements was attempted by sequential fluorescence in situ hybridization with a mix of repeated DNA probes and GISH on the same slide. The irradiated amphiploids formed fewer seeds than untreated plants, but normal levels of fertility were recovered in their offspring. The irradiation-induced wheat - Ae. biuncialis intergenomic translocations will facilitate the successful introgression of drought tolerance and other alien traits into bread wheat.
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Claims 10
Claim · model-written summary
mcGISH distinguished Aegilops biuncialis genomes and wheat chromosomes simultaneously.
- Taxon
- Triticum aestivum L. - Aegilops biuncialis Vis. amphiploids
Triticum aestivume1 - Outcome
- simultaneous discrimination of individual Ae. biuncialis genomes and wheat chromosomese0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mcGISH allowed the simultaneous discrimination of individual Ae. biuncialis genomes and wheat chromosomes”
e1“Triticum aestivum L. - Aegilops biuncialis Vis. amphiploids”
Claim · model-written summary
Dicentrics, fragments and terminal translocations were most frequent after irradiation.
- Taxon
- Triticum aestivum L. - Aegilops biuncialis Vis. amphiploidsTriticum aestivume1
- Treatment
- gamma-irradiatione0
- Outcome
- Dicentric chromosomes, fragments, and terminal translocationse0
- Direction
- most frequentlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dicentric chromosomes, fragments, and terminal translocations were most frequently induced by gamma-irradiation”
e1“Triticum aestivum L. - Aegilops biuncialis Vis. amphiploids”
Claim · model-written summary
Centric fusions and internal exchanges were more abundant in irradiated plants than controls.
- Taxon
- Triticum aestivum L. - Aegilops biuncialis Vis. amphiploidsTriticum aestivume1
- Treatment
- treated plantse0
- Outcome
- centric fusions and internal exchangese0
- Direction
- more abundante0
- Comparator
- control amphiploidse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“centric fusions and internal exchanges were also more abundant in the treated plants than in control amphiploids”
e1“Triticum aestivum L. - Aegilops biuncialis Vis. amphiploids”
Claim · model-written summary
Ub-genome rearrangements were more frequent than Mb-genome rearrangements.
- Taxon
- Triticum aestivum L. - Aegilops biuncialis Vis. amphiploidsTriticum aestivume1
- Material
- Ub genomee0
- Outcome
- Rearrangementse0
- Direction
- more frequente0
- Comparator
- Mb genomee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rearrangements involving the Ub genome (Ub-type aberrations) were more frequent than those involving the Mb genome (Mb-type aberrations)”
e1“Triticum aestivum L. - Aegilops biuncialis Vis. amphiploids”
Claim · model-written summary
Ub-type centric fusions were significantly more abundant than Mb-type fusions at all doses.
- Taxon
- Triticum aestivum L. - Aegilops biuncialis Vis. amphiploidsTriticum aestivume1
- Material
- Ub-type centric fusionse0
- Outcome
- centric fusionse0
- Direction
- more abundante0
- Qualifier
- all irradiation dosese0
- Comparator
- Mb-type centric fusionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ub-type centric fusions were significantly more abundant than Mb-type centric fusions at all irradiation doses”
e1“Triticum aestivum L. - Aegilops biuncialis Vis. amphiploids”
Claim · model-written summary
Dicentrics disappeared between M0 and M1.
- Taxon
- Triticum aestivum L. - Aegilops biuncialis Vis. amphiploidsTriticum aestivume1
- Outcome
- Dicentricse0
- Direction
- completely disappearede0
- Qualifier
- from M0 to M1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dicentrics completely disappeared, but centric fusions and translocations were well transmitted from M0 to M1”
e1“Triticum aestivum L. - Aegilops biuncialis Vis. amphiploids”
Claim · model-written summary
Centric fusions and translocations were transmitted from M0 to M1.
- Taxon
- Triticum aestivum L. - Aegilops biuncialis Vis. amphiploidsTriticum aestivume1
- Outcome
- centric fusions and translocations were well transmitted from M0 to M1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“centric fusions and translocations were well transmitted from M0 to M1”
e1“Triticum aestivum L. - Aegilops biuncialis Vis. amphiploids”
Claim · model-written summary
Irradiated amphiploids formed fewer seeds than untreated plants.
- Taxon
- Triticum aestivum L. - Aegilops biuncialis Vis. amphiploidsTriticum aestivume1
- Treatment
- irradiated amphiploidse0
- Outcome
- seedse0
- Direction
- fewere0
- Comparator
- untreated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The irradiated amphiploids formed fewer seeds than untreated plants”
e1“Triticum aestivum L. - Aegilops biuncialis Vis. amphiploids”
Claim · model-written summary
Normal fertility was recovered in offspring of irradiated amphiploids.
- Taxon
- Triticum aestivum L. - Aegilops biuncialis Vis. amphiploidsTriticum aestivume1
- Organ / stage
- offspringe0
- Outcome
- normal levels of fertilitye0
- Direction
- recoverede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“normal levels of fertility were recovered in their offspring”
e1“Triticum aestivum L. - Aegilops biuncialis Vis. amphiploids”
Claim · model-written summary
Irradiation-induced translocations may facilitate introgression of drought tolerance and other traits into bread wheat.
- Taxon
- bread wheatTriticum aestivume0
- Outcome
- introgression of drought tolerance and other alien traitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The irradiation-induced wheat - Ae. biuncialis intergenomic translocations will facilitate the successful introgression of drought tolerance and other alien traits into bread wheat”
The same questions in other papers
radiation · yield · Triticum aestivum (wheat)Results differ
15 papers in the same direction as this paper · 23 in the opposite direction
- positive
- positive
- positive
35 papers more in this group
See all 39 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.