Molecular genetics of leaf rust resistance in wheat and barley

Dinh, Hoan X.; Singh, Davinder; Periyannan, Sambasivam; Park, Robert; Pourkheirandish, Mohammad

doi:10.1007/s00122-020-03570-8

Cited by 50 publications

(64 citation statements)

References 157 publications

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“…Despite the paucity of success in gene cloning, pathways to engineer genes of interest via high throughput modern genome editing technology have already been unlocked (Figlan et al, 2020) tracking success in powdery mildew resistance (Wang et al, 2014). Other modern genomic approaches to rust resistance gene isolation such as mutant chromosome sequencing (MutChromSeq), resistance gene enrichment sequencing (RenSeq), and platform combining association genetics (GWAS) with RenSeq (AgRenSeq) have been discussed recently (Dinh et al, 2020). Above all, the molecular and genomic basis of resistance breeding relies on our understanding of host resistance as well as pathogen virulence genes and their interactive mechanisms involved in rust resistance.…”

Section: Modern Genomic Approaches For Breeding Lr and Sr Resistancementioning

confidence: 99%

“…Basel resistance is effective against a wider range of plant pathogens and includes both host and non-host resistance; whereas, R-gene mediated resistance is effective against specific pathogens (Gururani et al, 2012;Dinh et al, 2020). Overall, rust disease resistance mechanisms in wheat take place in three main steps: recognition of the pathogens, signal transduction, and defense responses (Dinh et al, 2020). When the rust pathogens land on the wheat plant, pattern recognition receptors (PRRs) in the host plant detect the pathogens which is followed by the transduction of signals to the immune system of the plants.…”

Section: Molecular Mechanisms Of Lr and Sr Resistancementioning

confidence: 99%

“…When the rust pathogens land on the wheat plant, pattern recognition receptors (PRRs) in the host plant detect the pathogens which is followed by the transduction of signals to the immune system of the plants. Once the pathogen is recognized and the signal is received, different mechanisms are induced in plant cells including programmed cell death (PCD) or sacrificing the infected cells and blocking the nutrient sources to the pathogens, as a disease resistance mechanism (Dinh et al, 2020).…”

Section: Molecular Mechanisms Of Lr and Sr Resistancementioning

confidence: 99%

“…However, only a few of the SR resistance genes, such as Yr10, Yr5/YrSP, and Yr7 encode this protein (Liu et al, 2014;Marchal et al, 2018). The activation of these NBS-LRR genes normally induces PCD or produces ROS in plants (Qi and Innes, 2013;Dinh et al, 2020). Therefore, the presence of these NBS-LRR genes in wheat is considered to be important to confer resistance against LR and SR with hypersensitive reaction via PCD.…”

Section: Molecular Mechanisms Of Lr and Sr Resistancementioning

confidence: 99%

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Fusarium Head Blight and Rust Diseases in Soft Red Winter Wheat in the Southeast United States: State of the Art, Challenges and Future Perspective for Breeding

et al. 2020

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Among the biotic constraints to wheat (Triticum aestivum L.) production, fusarium head blight (FHB), caused by Fusarium graminearum, leaf rust (LR), caused by Puccinia triticina, and stripe rust (SR) caused by Puccinia striiformis are problematic fungal diseases worldwide. Each can significantly reduce grain yield while FHB causes additional food and feed safety concerns due to mycotoxin contamination of grain. Genetic resistance is the most effective and sustainable approach for managing wheat diseases. In the past 20 years, over 500 quantitative trait loci (QTLs) conferring small to moderate effects for the different FHB resistance types have been reported in wheat. Similarly, 79 Lr-genes and more than 200 QTLs and 82 Yr-genes and 140 QTLs have been reported for seedling and adult plant LR and SR resistance, respectively. Most QTLs conferring rust resistance are race-specific generally conforming to a classical gene-for-gene interaction while resistance to FHB exhibits complex polygenic inheritance with several genetic loci contributing to one resistance type. Identification and deployment of additional genes/ QTLs associated with FHB and rust resistance can expedite wheat breeding through marker-assisted and/or genomic selection to combine small-effect QTL in the gene pool. LR disease has been present in the southeast United States for decades while SR and FHB have become increasingly problematic in the past 20 years, with FHB arguably due to increased corn acreage in the region. Currently, QTLs on chromosome 1B from

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Section: Modern Genomic Approaches For Breeding Lr and Sr Resistancementioning

confidence: 99%

Section: Molecular Mechanisms Of Lr and Sr Resistancementioning

confidence: 99%

Section: Molecular Mechanisms Of Lr and Sr Resistancementioning

confidence: 99%

Section: Molecular Mechanisms Of Lr and Sr Resistancementioning

confidence: 99%

See 2 more Smart Citations

Fusarium Head Blight and Rust Diseases in Soft Red Winter Wheat in the Southeast United States: State of the Art, Challenges and Future Perspective for Breeding

et al. 2020

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“…The deployment of resistance genes has long been considered as the most effective and sustainable way to control cereal leaf rust diseases. Dinh et al (2020) reviewed recent studies on the defense mechanisms conferred by the leaf rust resistance genes identified to date in cereals and their roles in either pattern-triggered immunity (PTI) or effector-triggered immunity (ETI). They highlighted latest strategies based on advances in genome sequencing and gene isolation by overcoming the complexity of cereal genomes.…”

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confidence: 99%