Identification and molecular mapping of YrBm for adult plan resistance to stripe rust in Chinese wheat landrace Baimangmai

Hu, Chaoyue; Martínek, Radek; Jing, Feng; Sun, Cai; Guo, Jun; Lang, Xiaowei; Hu, Jinghuang; Bai, Bin; Zhang, Wentao; Li, Hongjie; Lin, Ruiming; Xu, Shichang

doi:10.1007/s00122-022-04139-3

Cited by 4 publications

(2 citation statements)

References 44 publications

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“…QYr.crc-4BL was flanked by markers BS00048794_51 and RAC875_rep_c72961_977 , and the physical map position of QYr.crc-4BL was 601.93–617.00 Mb ( Rosa et al., 2019 ). YrBm , an APR QTL, was derived from Chinese winter wheat landrace Baimangmai ( Hu et al., 2022 ). It was flanked by markers Xgpw7272 and Xwmc652 .…”

Section: Discussionmentioning

confidence: 99%

Genome-wide QTL mapping for stripe rust resistance in spring wheat line PI 660122 using the Wheat 15K SNP array

Yan,

Jia,

Tan

et al. 2023

Front. Plant Sci.

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IntroductionStripe rust is a global disease of wheat. Identification of new resistance genes is key to developing and growing resistant varieties for control of the disease. Wheat line PI 660122 has exhibited a high level of stripe rust resistance for over a decade. However, the genetics of stripe rust resistance in this line has not been studied. A set of 239 recombinant inbred lines (RILs) was developed from a cross between PI 660122 and an elite Chinese cultivar Zhengmai 9023.MethodsThe RIL population was phenotyped for stripe rust response in three field environments and genotyped with the Wheat 15K single-nucleotide polymorphism (SNP) array.ResultsA total of nine quantitative trait loci (QTLs) for stripe rust resistance were mapped to chromosomes 1B (one QTL), 2B (one QTL), 4B (two QTLs), 4D (two QTLs), 6A (one QTL), 6D (one QTL), and 7D (one QTL), of which seven QTLs were stable and designated as QYrPI660122.swust-4BS, QYrPI660122.swust-4BL, QYrPI660122.swust-4DS, QYrPI660122.swust-4DL, QYrZM9023.swust-6AS, QYrZM9023.swust-6DS, and QYrPI660122.swust-7DS. QYrPI660122.swust-4DS was a major all-stage resistance QTL explaining the highest percentage (10.67%–20.97%) of the total phenotypic variation and was mapped to a 12.15-cM interval flanked by SNP markers AX-110046962 and AX-111093894 on chromosome 4DS.DiscussionThe QTL and their linked SNP markers in this study can be used in wheat breeding to improve resistance to stripe rust. In addition, 26 lines were selected based on stripe rust resistance and agronomic traits in the field for further selection and release of new cultivars.

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Section: Discussionmentioning

confidence: 99%

Genome-wide QTL mapping for stripe rust resistance in spring wheat line PI 660122 using the Wheat 15K SNP array

Yan,

Jia,

Tan

et al. 2023

Front. Plant Sci.

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“…In contrast, ASR, which is mediated by a single dominant resistance gene, may be ineffective following the widespread distribution of new highly virulent pathogen strains (Chen 2013; Chen 2020). Consequently, breeders should focus on the application of highly effective APR stripe rust resistance genes, while wheat growers should avoid cultivating highly susceptible varieties on which most of the inoculum is generated(Zheng et al 2017;Hu et al 2022). The wild relatives of wheat represent a natural genetic resource for improving wheat stripe rust resistance; approximately 25 resistance genes from wild relatives have been reported, including Yr9 and Yr83 in rye; Yr8, Yr17, Yr19, and Yr28 in Aegilops; and Yr50 and Yr69 in Thinopyrum.…”

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Introgression of tetraploid Thinopyrum elongatum 6EL segments enhances the stripe rust resistance of adult wheat plants

Zeng,

Li,

et al. 2023

Preprint

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Preventing the widespread occurrence of stripe rust in wheat largely depends on the identification of new stripe rust resistance genes and the breeding of cultivars with durable resistance. We obtained a wheat–tetraploid Thinopyrum elongatum 6E (6D) substitution line and determined that chromosome 6E contains genetic material conferring superior resistance to stripe rust at the adult stage. In this study, three novel wheat–tetraploid Th. elongatum translocation lineswere generated from the offspring of a cross between common wheat and the 6E (6D) substitution line. Genomic in situ hybridization (GISH), fluorescence in situ hybridization chromosome painting (FISH painting), repetitive sequential FISH, and 55K SNP analyses indicated that K227-48, K242-82, and K246-6 contained 42 chromosomes and were 6ES·6DL, 2DL·6EL, and 6DS·6ELtranslocation lines, respectively. The assessment of stripe rust resistance revealed that K227-48 was susceptible to a mixture of Pst races, whereas the 6EL lines K242-82 and K246-6 exhibited adult plant resistance to stripe rust. Thus, this resistance was due to the 6EL chromosome. The overall good agronomic performance of K246-6 implies this line may be a useful germplasm resource for wheat breeding programs. Furthermore, 34 PCR-based markers for chromosome 6EL were developed using the whole-genome sequence of diploid Th. elongatum. This novel translocation line may be applicable for breeding wheat lines resistant to stripe rust. Additionally, themarkers developed in this study will enablethe accurate tracing of tetraploid Th. elongatum chromosome 6E and the mapping of additional favorable genes on 6EL.

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Introgression of tetraploid Thinopyrum elongatum 6EL segments enhances the stripe rust resistance of adult wheat plants

Zeng,

Li,

et al. 2024

Mol Breeding

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Identification and molecular mapping of YrBm for adult plan resistance to stripe rust in Chinese wheat landrace Baimangmai

Cited by 4 publications

References 44 publications

Genome-wide QTL mapping for stripe rust resistance in spring wheat line PI 660122 using the Wheat 15K SNP array

Genome-wide QTL mapping for stripe rust resistance in spring wheat line PI 660122 using the Wheat 15K SNP array

Introgression of tetraploid Thinopyrum elongatum 6EL segments enhances the stripe rust resistance of adult wheat plants

Introgression of tetraploid Thinopyrum elongatum 6EL segments enhances the stripe rust resistance of adult wheat plants

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