Soybean Breeding Materials Useful for Resistance to Soybean Rust in Brazil

Yamanaka, Naoki; Lemos, N. G.; Akamatsu, Hajime; Yamaoka, Yuichi; Silva, Danielle C. G.; Passianotto, André Luiz de Lima; Abdelnoor, R. V.; Soares, R. M.; Suenaga, Kazuhiro

doi:10.6090/jarq.45.385

Cited by 20 publications

(20 citation statements)

References 29 publications

(32 reference statements)

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“…P and SSD mean parental variety and single-seed decent, respectively. Pedigree of An76-1 and No6-12-1 has been reported in previous studies Yamanaka et al 2011Yamanaka et al , 2013b Table 1 Simple sequence repeat (SSR) markers used for marker-assisted selection (MAS) to obtain Rpp (Resistance to Phakopsora pachyrhizi) -pyramided lines in this study Rpp-pyramided lines, An76-1 (Rpp2+Rpp4) and No6-12-1 (Rpp2+Rpp4+Rpp5) were obtained in the previous studies Yamanaka et al 2011Yamanaka et al , 2013b and omitted in this table b Genotype of ovule and pollen parents are represented as 'A' and 'B,' respectively seven F 3 plants from Oy49 were identified to carry Rpp3 as homozygous resistant (Rpp2Rpp2Rpp3Rpp3Rpp4Rpp4). One of them, 'Oy49-4', was used to produce F 4 plants, followed by evaluation for ASR resistance.…”

Section: Mas Of Rpp-pyramided Linesmentioning

confidence: 89%

“…1). Among the seven Rpp-pyramided lines, An76-1 and No6-12-1 have been obtained from previous studies Yamanaka et al 2011Yamanaka et al , 2013b, while the other five were newly developed from three kinds of F 2 populations: 1) No population consisting of 140 plants derived from a cross 'An76-1'×'Kinoshita', 2) Oy population of 94 plants from 'An76-1'×'Hyuuga,' and 3) Mo population of 93 plants from 'PI 200492'×'An76-1'. All seven Rpppyramided lines used in this study were derived from a single F 3 plant.…”

Section: Plant Materialsmentioning

confidence: 99%

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Multiple Rpp-gene pyramiding confers resistance to Asian soybean rust isolates that are virulent on each of the pyramided genes

Yamanaka

Morishita

Mori

et al. 2015

Trop. plant pathol.

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Since Asian soybean rust (ASR) isolates in South America are highly virulent, diverse, and distantly related to Japanese ones, limited numbers of resistance resources are available in soybean breeding in that region. Pyramiding of available ASR resistance genes (Rpp) in a single soybean genotype may provide wider spectrum and higher level of ASR resistance to soybean. However, the desired combinations of genes conferring adequate resistance to highly virulent or distantly related ASR isolates have not yet been studied. In this study, seven pyramided lines carrying multiple Rpp genes have been developed and evaluated for their resistance against one ASR isolate from Japan and two from Brazil. Significantly higher resistance was observed in the pyramided lines, No6-12-B (Rpp4 + Rpp5), Oy49-4 (Rpp2 + Rpp3 + Rpp4), and No6-12-1 (Rpp2+Rpp4+Rpp5) compared to the original resistance sources, PI 230970 (Rpp2), Hyuuga (Rpp3), PI 459025 (Rpp4), and Kinoshita (Rpp5) carrying single Rpp genes. Although infection of the resistance sources with the highly virulent Brazilian ASR isolates resulted in susceptible phenotypes with moderate to abundant sporulation, highly resistant phenotypes with almost no sporulation were observed in the three Rpp-pyramided lines. Therefore, pyramided lines carrying these Rpp gene combinations are useful in soybean breeding for conferring broad spectrum, high resistance to ASR isolates that are virulent to the varieties carrying single resistance genes.

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Section: Mas Of Rpp-pyramided Linesmentioning

confidence: 89%

Section: Plant Materialsmentioning

confidence: 99%

Multiple Rpp-gene pyramiding confers resistance to Asian soybean rust isolates that are virulent on each of the pyramided genes

Yamanaka

Morishita

Mori

et al. 2015

Trop. plant pathol.

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“…This has limited the use of single major genes for breeding against ASR in soybean especially in South America, where bulk isolates of P. pachyrhizi were highly virulent (Yamanaka et al. , , Akamatsu et al. ).…”

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confidence: 99%

The locus for resistance to Asian soybean rust in PI 587855

et al. 2016

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Asian soybean rust (ASR) caused by Phakopsora pachyrhizi is one of the most serious soybean (Glycine max) diseases in tropical and subtropical areas. A soybean line, PI 587855, showed a resistance phenotype against ASR pathogens in Japan and South America at high frequency; however, little is known of the genetic control of this resistance and chromosomal location of the corresponding locus. Therefore, the aim of this study was to study the inheritance of PI 587855 resistance and map the corresponding locus with SSR markers aiming to use the linked markers in marker‐assisted selection. In the segregating population, resistance to ASR appeared to be controlled by a single dominant gene. The ASR resistance locus was mapped near to the chromosomal region where the resistant loci, Rpp1 and Rpp1‐b, were previously mapped. Comparative genetic mapping and disease reaction profiles of other seven lines carrying Rpp1 or Rpp1‐b to four Brazilian ASR isolates revealed that the resistance reaction exhibited by PI 587855 was similar to that of Rpp1‐b‐carrying varieties which have useful resistance to South American ASR strains.

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“…This feature, coupled with its ability to confer resistance against a highly virulent Brazilian isolate named BRP-2 (Yamanaka et al, 2011), makes PI 594767-A a very promising accession for resistance to soybean rust in breeding programs. The pyramiding of the resistance allele in PI 594767-A with the broadspectrum resistance genes available at loci Rpp2, Rpp3, Rpp4, Rpp5, and Rpp6 can confer more durable resistance in the field.…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, some accessions that had not been characterized, such as PI 594767-A, exhibited resistance to this isolate. Yamanaka et al (2011) assessed the resistance of 66 soybean genotypes to a highly virulent Brazilian isolate called BRP-2, and found that PI 594767-A was the only genotype that did not have any uredias or uredospores up to two weeks after inoculation. However, the genetic control of resistance in this accession is unknown, so characterizing the gene(s) that confer resistance in PI 594767-A will contribute to the adoption of new strategies for the development of durable resistance to ASR.…”

Section: Introductionmentioning

confidence: 99%

Identification and mapping of resistance genes to Phakopsora pachyrhizi in soybean (Glycine max L.) accession PI 594767-A

Rocha¹,

Alves²,

Oliveira³

et al. 2016

Genet. Mol. Res.

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ABSTRACT. The goal of this study was to study resistance inheritance in the soybean (Glycine max L.) accession PI 594767-A to the Phakopsora pachyrhizi isolate PPUFV02, and map the resistance gene(s) identified using microsatellite markers. Crosses between PI 594767-A and the susceptible cultivar 'Conquista' gave rise to the segregating subpopulations 26C-2 and 26C-5, which in the F 2 generation were evaluated for their reactions to PPUFV02. In addition, analyses with microsatellite markers linked to the Rpp1-Rpp5 loci were also performed. The segregation pattern obtained in 26C-2 revealed that resistance was governed by a recessive gene; a 1:2:1 segregation pattern was observed in 26C-5, indicating control by a gene with partial dominance. This variability may have been caused because environmental conditions, particularly temperature, when 26C-5 was assessed were unfavorable for pathogen development, allowing the phenotypic expression of heterozygous alleles in PI 594767-A. A resistance gene was located in the soybean linkage group G, in the genomic region between Sct_187r2 and Sat_064 that contains the Rpp1 locus. Resistance in PI 594767-A is probably conferred by a new Rpp1 gene allele, because this accession has a haplotype for Sct_187r2 and Sat_064, which differs from haplotypes of accessions that also contain resistance alleles that map the Rpp1 locus. The use of Sct_187r2 and Sat_064 will facilitate the introgression of the resistance allele from PI 594767-A and its pyramiding with other resistance genes into genotypes with superior agronomic characteristics, in order to obtain cultivars with broad-spectrum resistance to P. pachyrhizi.

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Soybean Breeding Materials Useful for Resistance to Soybean Rust in Brazil

Cited by 20 publications

References 29 publications

Multiple Rpp-gene pyramiding confers resistance to Asian soybean rust isolates that are virulent on each of the pyramided genes

Multiple Rpp-gene pyramiding confers resistance to Asian soybean rust isolates that are virulent on each of the pyramided genes

The locus for resistance to Asian soybean rust in PI 587855

Identification and mapping of resistance genes to Phakopsora pachyrhizi in soybean (Glycine max L.) accession PI 594767-A

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