Oligo‐FISH Paints in Triticeae

Li, Guangrong; Yang, Zujun

doi:10.1002/cpz1.364

Cited by 8 publications

(10 citation statements)

References 32 publications

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“…These oligo probes were selected from linkage groups 1 to 7 chromosomes between wheat and barley. The sequential FISH with bulk painting with oligos was performed following the description by Li and Yang [ 51 ].…”

Section: Methodsmentioning

confidence: 99%

Chromosome Rearrangement in Elymus dahuricus Revealed by ND-FISH and Oligo-FISH Painting

Jiang,

Liu,

Yang

et al. 2023

Plants

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As a perennial herb in Triticeae, Elymus dahuricus is widely distributed in Qinghai–Tibetan Plateau and Central Asia. It has been used as high-quality fodders for improving degraded grassland. The genomic constitution of E. dahuricus (2n = 6x = 42) has been revealed as StStHHYY by cytological approaches. However, the universal karyotyping nomenclature system of E. dahuricus is not fully established by traditional fluorescent in situ hybridization (FISH) and genomic in situ hybridization (GISH). In this study, the non-denaturing fluorescent in situ hybridization (ND-FISH) using 14 tandem-repeat oligos could effectively distinguish the entire E. dahuricus chromosomes pairs, while Oligo-FISH painting by bulked oligo pools based on wheat-barley collinear regions combined with GISH analysis, is able to precisely determine the linkage group and sub-genomes of the individual E. dahuricus chromosomes. We subsequently established the 42-chromosome karyotype of E. dahuricus with distinctive chromosomal FISH signals, and characterized a new type of intergenomic rearrangement between 2H and 5Y. Furthermore, the comparative chromosomal localization of the centromeric tandem repeats and immunostaining by anti-CENH3 between cultivated barley (Hordeum vulgare L.) and E. dahuricus suggests that centromere-associated sequences in H subgenomes were continuously changing during the process of polyploidization. The precise karyotyping system based on ND-FISH and Oligo-FISH painting methods will be efficient for describing chromosomal rearrangements and evolutionary networks for polyploid Elymus and their related species.

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Section: Methodsmentioning

confidence: 99%

Chromosome Rearrangement in Elymus dahuricus Revealed by ND-FISH and Oligo-FISH Painting

Jiang,

Liu,

Yang

et al. 2023

Plants

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“…The tandem repeat-based oligo-nucleotide probes Oligo-k288 ( Wang et al., 2019 ) and Oligo-D ( Tang et al., 2018 ) for ND-FISH are listed in Table 1 . After FISH using the above oligos as probes, the sequential FISH painting with bulked oligos was conducted following the description by Li and Yang (2022) . Photomicrographs of FISH chromosomes were taken with an Olympus BX-53 microscope equipped with a DP-70 CCD camera.…”

Section: Methodsmentioning

confidence: 99%

Molecular and cytogenetic dissection of stripe rust resistance gene Yr83 from rye 6R and generation of resistant germplasm in wheat breeding

Zhang

et al. 2022

Front. Plant Sci.

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Rye 6R-derived stripe rust resistance gene Yr83 in wheat background was physically mapped to fraction length (FL) 0.87-1.00 on the long arm by non-denaturing-fluorescence in situ hybridization (ND-FISH), Oligo-FISH painting and 6R-specific PCR markers.Stripe rust resistance gene Yr83 derived from chromosome 6R of rye (Secale cereale) “Merced” has displayed high resistance to both Australian and Chinese wheat stripe rust isolates. With the aim to physically map Yr83 to a more precise region, new wheat- 6R deletion and translocation lines were produced from derived progenies of the 6R(6D) substitution line. The non-denaturing fluorescence in situ hybridization (ND-FISH) patterns of 6R were established to precisely characterize the variations of 6R in different wheat backgrounds. Comparative ND-FISH analysis localized the breakpoints of 6RL chromosomes relative to Oligo-pSc200 and Oligo-pSc119.2 rich sites in deletion lines. Molecular marker and resistance analyses confirmed that Yr83 is physically located at the fraction length (FL) 0.87-1.00 of 6RL and covers the corresponding region of 806-881 Mb in the reference genome of Lo7. Oligo-FISH painting demonstrated that the region carrying Yr83 is syntenic to the distal end of long arm of homoeologous group 7 of the Triticeae genome. The developed wheat-6R lines carrying the Yr83 gene will be useful for breeding for rust resistance.

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“…The Oligo-FISH painting probed with the 45bp single-copy oligo pools Synt1 to Synt7 for wheat-barley linkage group specific was used to reveal the linkage group assignment for wheat and Triticeae chromatin [ 50 ]. The procedure of Oligo-FISH painting was followed the description by Li and Yang [ 51 ].…”

Section: Methodsmentioning

confidence: 99%

Molecular and Cytogenetic Identification of Wheat-Thinopyrum intermedium Double Substitution Line-Derived Progenies for Stripe Rust Resistance

Chen

Jiang

et al. 2022

Plants

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Thinopyrum intermedium (2n = 6x = 42, JJJSJSStSt) has been hybridized extensively with common wheat and proven to be a valuable germplasm source for improving disease resistance and yield potential of wheat. A novel disease-resistant wheat-Th. intermedium double substitution line X479, carrying 1St(1B) and 4St-4JS (4B), was identified using multi-color non-denaturing fluorescence in situ hybridization (ND-FISH). With the aim of transferring Thinopyrum-specific chromatin to wheat, a total of 573 plants from F2 and F3 progenies of X479 crossed with wheat cultivar MY11 were developed and characterized using sequential ND-FISH with multiple probes. Fifteen types of wheat-Thinopyrum translocation chromosomes were preferentially transmitted in the progenies, and the homozygous wheat-1St, and wheat-4JSL translocation lines were identified using ND-FISH, Oligo-FISH painting and CENH3 immunostaining. The wheat-4JSL translocation lines exhibited high levels of resistance to stripe rust prevalent races in field screening. The gene for stripe rust resistance was found to be physically located on FL0–0.60 of the 4JSL, using deletion lines and specific DNA markers. The new wheat-Th. intermedium translocation lines can be exploited as useful germplasms for wheat improvement.

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Oligo‐FISH Paints in Triticeae

Cited by 8 publications

References 32 publications

Chromosome Rearrangement in Elymus dahuricus Revealed by ND-FISH and Oligo-FISH Painting

Chromosome Rearrangement in Elymus dahuricus Revealed by ND-FISH and Oligo-FISH Painting

Molecular and cytogenetic dissection of stripe rust resistance gene Yr83 from rye 6R and generation of resistant germplasm in wheat breeding

Molecular and Cytogenetic Identification of Wheat-Thinopyrum intermedium Double Substitution Line-Derived Progenies for Stripe Rust Resistance

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