8, A New Locus in Soybean for Resistance to

Burnham, K. D.; Dorrance, A. E.; Francis, David M.; Fioritto, R. J.; Martin, S. K. St.

doi:10.2135/cropsci2003.0101

Cited by 39 publications

(42 citation statements)

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“…Resistant cultivars carrying major resistance (R) genes against P. sojae (Rps genes) have been a cornerstone for management of the pathogen for 50 years (Schmitthenner, 1985;Buzzell et al, 1987). Currently, 14 Rps genes at eight loci are known (Buzzell and Anderson, 1992;Burnham et al, 2003;Sandhu et al, 2005). The Rps genes function in a gene-for-gene interaction with avirulence genes in P. sojae (Whisson et al, 1994;Tyler et al, 1995;Gijzen et al, 1996;May et al, 2002;Tyler, 2009).…”

Section: Introductionmentioning

confidence: 99%

Transcriptional Programming and Functional Interactions within the Phytophthora sojae RXLR Effector Repertoire

et al. 2011

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The genome of the soybean pathogen Phytophthora sojae contains nearly 400 genes encoding candidate effector proteins carrying the host cell entry motif RXLR-dEER. Here, we report a broad survey of the transcription, variation, and functions of a large sample of the P. sojae candidate effectors. Forty-five (12%) effector genes showed high levels of polymorphism among P. sojae isolates and significant evidence for positive selection. Of 169 effectors tested, most could suppress programmed cell death triggered by BAX, effectors, and/or the PAMP INF1, while several triggered cell death themselves. Among the most strongly expressed effectors, one immediate-early class was highly expressed even prior to infection and was further induced 2- to 10-fold following infection. A second early class, including several that triggered cell death, was weakly expressed prior to infection but induced 20- to 120-fold during the first 12 h of infection. The most strongly expressed immediate-early effectors could suppress the cell death triggered by several early effectors, and most early effectors could suppress INF1-triggered cell death, suggesting the two classes of effectors may target different functional branches of the defense response. In support of this hypothesis, misexpression of key immediate-early and early effectors severely reduced the virulence of P. sojae transformants.

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Section: Introductionmentioning

confidence: 99%

Transcriptional Programming and Functional Interactions within the Phytophthora sojae RXLR Effector Repertoire

et al. 2011

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“…Besides Rpa1, MLG F contains many other single-gene disease resistance loci and QTL's. For example, there are two resistance genes that confer resistance to P. sojae (Rps), Rps3 and (Burnham et al, 2003a, Demirbas et al, 2001, Sandhu et al 2005, one resistance gene that confers resistance to Phomopsis seed decay (Rpsd1) (Jackson, et al 2005). The linkage group F also contains additional disease resistance loci conferring bacterial disease resistance (Pseudomonas syringae pv.…”

Section: ____________________________________________________________mentioning

confidence: 99%

Resistance to Pythium Seedling Disease in Soybean

Rupe¹,

Rothrock²,

Bates³

et al. 2011

Soybean - Molecular Aspects of Breeding

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“…For instance, the hypocotyl inoculation test detects single dominant genes, known as Rps, while the root inoculation test detects partial resistance, which is expressed as fewer rotted roots and slower disease progress (Tooley and Grau 1984). To date, eight dominant genes, designated as Rps1 to Rps8, have been identified to convey resistance to 55 physiologic races of P. sojae (Burnham et al 2003). Among these, Rps1 and Rps3 were reported to have multiple alleles (Grau et al 2004).…”

Section: Phytophthoramentioning

confidence: 99%

“…Lohnes and Schmitthenner (1997) used another set of RFLP markers to map locus Rps7 in a 'Clark x Harosoy' isoline mapping population and reported this locus was closely linked to the RFLP marker R022-1 on LG N. The genomic location of the loci Rps1 and Rps7 on LG N was subsequently confirmed by Demirbas et al (2001) and Weng et al (2001), who utilized SSR markers and compared their linkage group to a consensus linkage group of the soybean (Cregan et al 1999a). Burnham et al (2003) reported a novel Phytophthora resistant locus, Rps8, in PI399073 from South Korea and mapped the locus on LG A2. Subsequently, however, the locus was re-located on LG F based on linkage analysis with SSR and RFLP markers (Gordon et al 2006).…”

Section: Phytophthoramentioning

confidence: 99%

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Genomics Approaches To Soybean Improvement

Vuong

Pathan

et al.

Genomics-Assisted Crop Improvement

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Abstract:Soybean, Glycine max (L.) Merr., has become the major source of edible vegetable oils and high protein feeds for livestocks in the world. A native of Eastern Asia, soybean was introduced into the USA and South America where it has become the most economically important agricultural crop and export commodity. In recent years, as demand for soybean increased due to the values of seed oil and protein, as well as industrial and nutriceutical uses, it has received more attention by scientists aiming to the development and employment of genomic technology for soybean improvement. Several DNA marker systems, such as restriction fragment length polymorphism (RFLP), simple sequence repeat (SSR), and single nucleotide polymorphism (SNP), were integrated into the soybean genetic linkage map, which has been successfully utilized for mapping quantitative trait loci (QTL) linked to desirable traits and marker-assisted breeding of disease resistance and seed composition. The availability of a large number of expressed sequence tags (EST) and BAC sequences facilitated the discovery of new SNP and SSR markers in soybean toward the construction of high resolution genetic maps. Integrated genetic and physical maps will provide an invaluable resource for gene identification and positional cloning of important quantitative trait loci in soybean. Functional genomics has emerged as a new and rapidly evolved discipline to identify and understand gene functions via an integrated approach which includes transcriptomics, proteomics, metabolomics, translational genomics, and bioinformatics. The completion of whole soybean genome sequencing is anticipated in a few years. The availability of the soybean genome sequences in combination with the integrated genetic and physical maps will be invaluable resources providing soybean researchers powerful and efficient genomic tools to identify and characterize genes or QTLs for agronomic traits of soybean. As a result, it facilitates marker-assisted breeding and soybean improvement.

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8, A New Locus in Soybean for Resistance to

Cited by 39 publications

References 0 publications

Transcriptional Programming and Functional Interactions within the Phytophthora sojae RXLR Effector Repertoire

Transcriptional Programming and Functional Interactions within the Phytophthora sojae RXLR Effector Repertoire

Resistance to Pythium Seedling Disease in Soybean

Genomics Approaches To Soybean Improvement

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