Identification of a major QTL on chromosome arm 2AL for reducing yellow rust severity from a Chinese wheat landrace with evidence for durable resistance

Wang, Zhen; Ren, Jingyao; Du, Zhangliu; Che, Mingzhe; Zhang, Yibin; Quan, Wei; Jiang, Xu; Ma, Yuan; Zhao, Yin; Zhang, Zhongjun

doi:10.1007/s00122-018-3232-1

Cited by 18 publications

(13 citation statements)

References 90 publications

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“…QYr.lrdc‐2A.2 mapped on the long arm of chromosome 2A was identified only in Creston 2020, where it explained 5.5% of the phenotypic variance (Table 3). The long arm of chromosome 2A has always been a major source of stripe rust resistance (Bokore et al., 2017; Vazquez et al., 2015; Wang et al., 2019). Furthermore, minor effect QTL on chromosome arm 2AL have been reported in wheat cultivars Recital (Dedryver et al., 2009), Taldor (Paillard et al., 2012), Kundan (Ren et al., 2017), Chuanmai 55 (Yang et al., 2019), and PI 197734 (Liu et al., 2020).…”

Section: Discussionmentioning

confidence: 99%

QTL mapping for adult plant field resistance to stripe rust in the AAC Cameron/P2711 spring wheat population

et al. 2022

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Stripe rust, caused by Puccinia striiformis f. sp. tritici (Pst), is a devastating disease of wheat (Triticum aestivum L.). Deployment of resistant wheat cultivars is one of the best strategies to mitigate disease-associated risks. The genotype P2711 possesses effective stripe rust resistance under field conditions in western Canada, however, the genetic basis of this resistance is unknown. To identify resistance, a recombinant inbred line (RIL) population comprised of 252 RILs was developed from the cross AAC Cameron/P2711. This population was evaluated for stripe rust severity at the adult plant stage in Creston, BC (in 2018, 2019, and 2020) and Lethbridge, AB (in 2018 and 2020), and was genotyped using the wheat 90K iSelect single nucleotide polymorphism (SNP) assay. A high-density genetic map comprised of 8,915 markers was constructed covering all the wheat chromosomes. Four resistance quantitative trait loci (QTLs) were contributed by P2711 and three from AAC Cameron. QYr.lrdc-2A.1, corresponding to the Yr17 gene, was the most stable QTL and detected in four out of five environments, whereas QYr.lrdc-2B was the second most stable QTL. These two QTL along with QYr.lrdc-5A showed a significant reduction in stripe rust severity when present together. Where most of the QTLs detected in both locations, QYr.lrdc-1A.1 and QYr.lrdc-1A.2, both were detected only in Creston, BC. Stable QTLs on chromosome 2A, 2B, and 5A, and their closely associated markers identified in this study could be utilized in marker-assisted selection for stripe rust resistant cultivar development.

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Section: Discussionmentioning

confidence: 99%

QTL mapping for adult plant field resistance to stripe rust in the AAC Cameron/P2711 spring wheat population

et al. 2022

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“…Advancements in the field of bioinformatics and genomics will help understand the pathogenicity process and race evolution of Pst ( 12 ). Draft of wheat genome is also available ( 13 ), which should also be explored for NBS-LRR and other gene families using bioinformatics tools to figure out putative Pst resistance genes for the development of durable Pst- resistant wheat cultivars ( 14 ).…”

Section: The Pst Pathogenmentioning

confidence: 99%

Role of Genetics, Genomics, and Breeding Approaches to Combat Stripe Rust of Wheat

et al. 2020

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Puccinia striiformis (Pst) is a devastating biotrophic fungal pathogen that causes wheat stripe rust. It usually loves cool and moist places and can cause 100% crop yield losses in a single field when ideal conditions for disease incidence prevails. Billions of dollars are lost due to fungicide application to reduce stripe rust damage worldwide. Pst is a macrocyclic, heteroecious fungus that requires primary (wheat or grasses) as well as secondary host ( Berberis or Mahonia spp.) for completion of life cycle. In this review, we have summarized the knowledge about pathogen life cycle, genes responsible for stripe rust resistance, and susceptibility in wheat. In the end, we discussed the importance of conventional and modern breeding tools for the development of Pst -resistant wheat varieties. According to our findings, genetic engineering and genome editing are less explored tools for the development of Pst -resistant wheat varieties; hence, we highlighted the putative use of advanced genome-modifying tools, i.e., base editing and prime editing, for the development of Pst -resistant wheat.

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“…Recording was done three times when the flag leaves of NG and MX showed disease severities of 10–30%, 50–60%, and 80–90%, respectively, within the period corresponding to wheat growth stages from 55 to 77 in the scale of Zadoks et al (1974) . The area under the disease progress curve (AUDPC) was calculated based on three times recordings for each plot entry according to Wang et al (2019) . QTL analysis was based on the mean AUDPC calculated by averaging the three replicates within an individual environment.…”

Section: Methodsmentioning

confidence: 99%

Identification and Validation of a Major Quantitative Trait Locus for Adult Plant Resistance Against Leaf Rust From the Chinese Wheat Landrace Bai Qimai

et al. 2022

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Leaf rust caused by Puccinia triticina Eriks. (Pt) is a common disease of wheat worldwide. The Chinese wheat landrace Bai Qimai (BQM) has shown high resistance to leaf rust for a prolonged period of time; the infected leaves of BQM displayed high infection types (ITs), but they showed low disease severities at the adult plant stage. To find quantitative trait loci (QTL) for resistance to leaf rust, 186 recombinant inbred lines from the cross Nugaines × BQM were phenotyped for leaf rust response in multiple field environments under natural Pt infections and genotyped using the 90K wheat single nucleotide polymorphism (SNP) chip and simple sequence repeat (SSR) markers. A total of 2,397 polymorphic markers were used for QTL mapping, and a novel major QTL (QLr.cau-6DL) was detected on chromosome 6DL from BQM. The effectiveness of QLr.cau-6DL was validated using the three additional wheat populations (RL6058 × BQM, Aikang58 × BQM, and Jimai22 × BQM). QLr.cau-6DL could significantly reduce leaf rust severities across all tested environments and different genetic backgrounds, and its resistance was more effective than that of Lr34. Moreover, QLr.cau-6DL acted synergistically with Lr34 to confer strong resistance to leaf rust. We believe that QLr.cau-6DL should have high potential value in the breeding of wheat cultivars with leaf rust resistance.

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Identification of a major QTL on chromosome arm 2AL for reducing yellow rust severity from a Chinese wheat landrace with evidence for durable resistance

Cited by 18 publications

References 90 publications

QTL mapping for adult plant field resistance to stripe rust in the AAC Cameron/P2711 spring wheat population

QTL mapping for adult plant field resistance to stripe rust in the AAC Cameron/P2711 spring wheat population

Role of Genetics, Genomics, and Breeding Approaches to Combat Stripe Rust of Wheat

Identification and Validation of a Major Quantitative Trait Locus for Adult Plant Resistance Against Leaf Rust From the Chinese Wheat Landrace Bai Qimai

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