Confirmation of Rpp Genes Conferring Resistance to Asian Soybean Rust and Mapping of Rpp1 Allele from PI 594723

Meira, Daniela; VdBB, Batti; Lg, Woyann; As, Milioli; Ah, Bozi; Beche, Eduardo; Mc, Panho; Barrionuevo, Francisco; La, Madella; Malone, G. W.; Slb, Júnior; Finatto, Taciane; Benin, Giovani

doi:10.21203/rs.3.rs-267310/v1

Cited by 2 publications

(1 citation statement)

References 30 publications

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“…Rpp1 , Rpp4 and Rpp6 were mapped to three different regions on chromosome 18 (Barros et al ., 2023 ; Chakraborty et al ., 2009 ; Garcia et al ., 2011 ; Hyten et al ., 2007 ; Kim et al ., 2012 ; King et al ., 2016a ; Li et al ., 2012 ; Liu et al ., 2016 ; McLean and Byth, 1980 ). New alleles of Rpp1 and Rpp4 , designated Rpp1‐b (Hossain et al ., 2015 ; Meira et al ., 2021 ; Ray et al ., 2009 ; Yamanaka et al ., 2016 ) and Rpp4‐b (King et al ., 2017 ) were mapped on chromosome 18. Rpp2 (Laperuta et al ., 2008 ; Silva et al ., 2008 ; Yu et al ., 2015 ) and the recessive allele rpp2 (Garcia et al ., 2008 ) were mapped on chromosome 16.…”

Section: Recent Advancements In Our Understanding Of the P ...mentioning

confidence: 99%

Soybean‐Phakopsora pachyrhizi interactions: towards the development of next‐generation disease‐resistant plants

Chicowski,

Bredow,

Utiyama

et al. 2023

Plant Biotechnology Journal

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SummarySoybean rust (SBR), caused by the obligate biotrophic fungus Phakopsora pachyrhizi, is a devastating foliar disease threatening soybean production. To date, no commercial cultivars conferring durable resistance to SBR are available. The development of long‐lasting SBR resistance has been hindered by the lack of understanding of this complex pathosystem, encompassing challenges posed by intricate genetic structures in both the host and pathogen, leading to a gap in the knowledge of gene‐for‐gene interactions between soybean and P. pachyrhizi. In this review, we focus on recent advancements and emerging technologies that can be used to improve our understanding of the P. pachyrhizi‐soybean molecular interactions. We further explore approaches used to combat SBR, including conventional breeding, transgenic approaches and RNA interference, and how advances in our understanding of plant immune networks, the availability of new molecular tools, and the recent sequencing of the P. pachyrhizi genome could be used to aid in the development of better genetic resistance against SBR. Lastly, we discuss the research gaps of this pathosystem and how new technologies can be used to shed light on these questions and to develop durable next‐generation SBR‐resistant soybean plants.

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Section: Recent Advancements In Our Understanding Of the P ...mentioning

confidence: 99%

Soybean‐Phakopsora pachyrhizi interactions: towards the development of next‐generation disease‐resistant plants

Chicowski,

Bredow,

Utiyama

et al. 2023

Plant Biotechnology Journal

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Allelic variability in the Rpp1 locus conferring resistance to Asian soybean rust revealed by genome-wide association

Aoyagi,

Ferreira,

da Silva

et al. 2024

BMC Plant Biol

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Soybean is a crucial crop for the Brazilian economy, but it faces challenges from the biotrophic fungus Phakopsora pachyrhizi, which causes Asian Soybean Rust (ASR). In this study, we aimed to identify SNPs associated with resistance within the Rpp1 locus, which is effective against Brazilian ASR populations. We employed GWAS and re-sequencing analyzes to pinpoint SNP markers capable of differentiating between soybean accessions harboring the Rpp1, Rpp1b and other alternative alleles in the Rpp1 locus and from susceptible soybean cultivars. Seven SNP markers were found to be associated with ASR resistance through GWAS, with three of them defining haplotypes that efficiently distinguished the accessions based on their ASR resistance and source of the Rpp gene. These haplotypes were subsequently validated using a bi-parental population and a diverse set of Rpp sources, demonstrating that the GWAS markers co-segregate with ASR resistance. We then examined the presence of these haplotypes in a diverse set of soybean genomes worldwide, finding a few new potential sources of Rpp1/Rpp1-b. Further genomic sequence analysis revealed nucleotide differences within the genes present in the Rpp1 locus, including the ULP1-NBS-LRR genes, which are potential R gene candidates. These results provide valuable insights into ASR resistance in soybean, thus helping the development of resistant soybean varieties through genetic breeding programs.

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Confirmation of Rpp Genes Conferring Resistance to Asian Soybean Rust and Mapping of Rpp1 Allele from PI 594723

Cited by 2 publications

References 30 publications

Soybean‐Phakopsora pachyrhizi interactions: towards the development of next‐generation disease‐resistant plants

Soybean‐Phakopsora pachyrhizi interactions: towards the development of next‐generation disease‐resistant plants

Allelic variability in the Rpp1 locus conferring resistance to Asian soybean rust revealed by genome-wide association

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