Seleção de genótipos de soja resistentes a duas estirpes de Soybean mosaic virus

Almeida, A. M. R.; Almeida, Leones Alves de; Kiihl, Romeu A. S.

doi:10.1590/s0100-41582001000100019

Cited by 3 publications

(2 citation statements)

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“…Recently, by the fine-mapping of a locus conferring resistance to Soybean Mosaic Virus (SMV) identified a region of 79 kbp on chromosome 13 [54], and among the genes located in the region, it was identified the Glyma13g.194700, which had high gene expression levels at 8 hpi (hours post inoculation) [55]. Locus conferring both resistance to nematode and virus was already described.…”

Section: Expression Analyses Of Candidate Genes For Resistance To M mentioning

confidence: 99%

Genome-Wide Association Study for Resistance to the <em>Meloidogyne javanica</em> Causing Root-Knot Nematode in Soybean

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et al. 2019

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Meloidogyne javanica causing root-knot nematode in soybean is an important problem in soybean areas, leading to several yield losses. Some accessions have been identified carrying resistance loci to this nematode specie. In this study, a set of 317 soybean accessions were characterized for resistance to M. javanica. Genome-wide association study (GWAS) was performed using SNPs from genotyping-by-sequencing (GBS), and a region of 29.2 Kbp on chromosome 13 was identified. The haplotype analysis showed that SNPs were able to discriminate susceptible and resistant accessions, leading to 25 accessions sharing the resistance locus. Furthermore, 5 accessions may be new M. javanica resistance sources. The screening of the SNPs in the USDA soybean germplasm showed that several accessions previous reported as resistance to other nematodes also showed the resistance haplotype on chromosome 13. High levels of concordance among the phenotypes of Brazilian cultivars and the SNPs in chromosome 13 were observed. A in silico analysis of the mapped region on soybean genome revealed a presence of 5 genes with structural similarity with major resistance genes. The expression levels of the candidate genes in the interval demonstrated a potential pseudogene, and other two model genes up-regulated in the resistance source after pathogen infection. The SNPs associated to the region conferring resistance is a important tool for introgression of the resistance by marker-assisted selection in soybean breeding programs.

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Section: Expression Analyses Of Candidate Genes For Resistance To M mentioning

confidence: 99%

Genome-Wide Association Study for Resistance to the <em>Meloidogyne javanica</em> Causing Root-Knot Nematode in Soybean

Alekcevetch

Passianotto

Ferreira

et al. 2019

Preprint

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“…production has gained increasing importance in the Brazilian Amazon region, taking place through cropland intensification into pristine forests (Lathuillière et al, 2017). The expansion of soybean cultivation areas to the Amazon region was possible due to long-term selection programs of soybean breeding for low-latitude regions (Almeida et al, 1999) and the isolation and inoculation of N-fixing strains capable of supplying N to soybean (Hungria et al, 2020). Brazil is currently the world's largest soybean producer and is responsible for producing 132.9 million tons in the crop year 2020/2021.…”

Section: Introductionmentioning

confidence: 99%