Resistance to pathogens in wheat-rye and triticale genetic stocks

Spetsov, P.; Daskalova, N.

doi:10.1007/s42161-021-01019-5

Cited by 8 publications

(10 citation statements)

References 116 publications

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“…Therefore, the transfer of excellent genes from wheat relatives to wheat through distant hybridization is an effective way to improve and broaden wheat genetic variations. For example, the 1RS chromosome of rye carries many genes related to high-yield, adaptability, and disease resistance, such as Yr9 , Sr31 , Lr26 , Pm8 , Gb2, and so on [ 27 , 28 , 29 , 30 ].…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies have found that the powdery mildew resistance gene Pm20 is carried on the 6RL chromosome of Prolific rye [ 56 ], the Pm56 gene was located on the 6RS chromosome of Qinling rye [ 6 ], and many rye varieties carrying powdery mildew resistance genes on 6RL chromosomes have been successfully used in wheat powdery mildew resistance breeding [ 30 ]. It has also been found that the 6R chromosome of rye also carries the stripe rust resistance gene [ 57 ].…”

Section: Discussionmentioning

confidence: 99%

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Transfer of the Resistance to Multiple Diseases from a Triticum-Secale-Thinopyrum Trigeneric Hybrid to Ningmai 13 and Yangmai 23 Wheat Using Specific Molecular Markers and GISH

Dai

Shi

et al. 2022

Genes

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The middle to lower reaches of the Yangtze River are China’s second largest area for wheat production; wheat disease is more serious there than in other areas because of the high humidity and warm weather. However, most cultivated varieties are susceptible to Fusarium head blight (FHB), powdery mildew, and stripe rust, and the lack of disease-resistant germplasm is an obstacle in wheat breeding. Rye and Thinopyrum elongatum, related species of wheat, carry many genes involved in disease resistance. In this study, a trigeneric hybrid, YZU21, with resistance to FHB, powdery mildew, and stripe rust was used to improve two major wheat cultivars, Ningmai 13 (NM13) and Yangmai 23 (YM23). Specific molecular markers and GISH were used to identify hybrid progenies. Five addition or substitution lines and one translocation line of the Triticum-Secale-Thinopyrum trigeneric hybrid were obtained and evaluated for agronomic traits and the resistance to multiple diseases. The results showed that the six trigeneric hybrid lines had desirable agronomic traits and improved resistance to FHB, powdery mildew, and stripe rust; they might be used as parents in wheat breeding for the resistance to multiple disease.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Transfer of the Resistance to Multiple Diseases from a Triticum-Secale-Thinopyrum Trigeneric Hybrid to Ningmai 13 and Yangmai 23 Wheat Using Specific Molecular Markers and GISH

Dai

Shi

et al. 2022

Genes

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“…Wheat-related species contain abundant resistance genes. For example, rye ( Secale cereale L.) is an important gene source for wheat disease resistance breeding (Spetsov and Daskalova, 2022 ). Stripe rust gene Yr 9 located on the 1RS arm was successfully used in commercial wheat cultivars.…”

Section: Introductionmentioning

confidence: 99%

The Physical Location of Stripe Rust Resistance Genes on Chromosome 6 of Rye (Secale cereale L.) AR106BONE

et al. 2022

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It was reported that the chromosome 6R of rye (Secale cereale L.) carries stripe rust resistance gene Yr83, and the region with the candidate resistance gene(s) still needs to be narrowed down. This study confirmed that the chromosome 6RLAr derived from rye AR106BONE contains stripe rust resistance gene(s). A wheat-rye T6BS.6RLAr translocation chromosome, a wheat-rye small-segment translocation T6RLAr-6AS.6AL, and three kinds of deleted T6BS.6RLAr translocations, T6BS.6RLAr-1, T6BS.6RLAr-2, and T6BS.6RLAr-3, were identified. Translocations T6BS.6RLAr, T6BS.6RLAr-2, and T6RLAr-6AS.6AL were highly resistant to stripe rust and T6BS.6RLAr-1 and T6BS.6RLAr-3 were highly susceptible. The molecular markers specific to 6RL determined that the three regions of the 6RLAr arm from 732,999,830 bp to the telomere, from 735,010,030 to 848,010,414 bp, and from 848,011,262 bp to the telomere were deleted from T6BS.6RLAr-1, T6BS.6RLAr-2, and T6BS.6RLAr-3, respectively. T6BS.6RLAr-2 and T6RLAr-6AS.6AL contained the segment that was deleted in T6BS.6RLAr-3. Therefore, it can be concluded that about 37 Mb segment from 848,011,262 bp to the telomere carried stripe rust resistance gene(s), and it was smaller than that with the Yr83 gene. Gene annotation indicated that about 37 Mb region contains 43 potential resistance genes, and 42 of them are nucleotide-binding site and leucine-rich repeat (NBS-LRR)-like resistance protein genes. The results in this study narrowed down the size of the region with candidate stripe rust resistance gene(s) on the 6RL arm, and the T6RLAr-6AS.6AL is a promising small-segment translocation for improvement of wheat cultivars.

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“…Cultivated rye ( Secale cereale L.) has been a valuable source of potentially useful genes for wheat improvement ( Rabinovich, 1997 ; Tang et al., 2011 ). However, reports on stripe rust resistance genes derived from Secale species are far behind the other foliar disease resistance genes identified ( Spetsov and Daskalova, 2022 ). The chromosome arm 1RS from ‘Petkus’ rye was introduced into many wheat cultivars grown worldwide and carries stripe rust resistance gene Yr9 ( Mago et al., 2005 ), which is no longer effective in most locations.…”

Section: Introductionmentioning

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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Resistance to pathogens in wheat-rye and triticale genetic stocks

Cited by 8 publications

References 116 publications

Transfer of the Resistance to Multiple Diseases from a Triticum-Secale-Thinopyrum Trigeneric Hybrid to Ningmai 13 and Yangmai 23 Wheat Using Specific Molecular Markers and GISH

Transfer of the Resistance to Multiple Diseases from a Triticum-Secale-Thinopyrum Trigeneric Hybrid to Ningmai 13 and Yangmai 23 Wheat Using Specific Molecular Markers and GISH

The Physical Location of Stripe Rust Resistance Genes on Chromosome 6 of Rye (Secale cereale L.) AR106BONE

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

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