New Loci Including Pse-6 Conferring Resistance to Halo Bacterial Blight on Chromosome Pv04 in Common Bean Public Deposited

http://ir.library.oregonstate.edu/concern/articles/g445cf98t

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  • Halo bacterial blight caused by Pseudomonas syringae pv. phaseolicola (Psp) is a serious seed-borne disease of common bean (Phaseolus vulgaris L.). The disease can be controlled by major resistance (R) genes effective against specific races of the pathogen. Our objective was to characterize the R gene(s) conferring resistance to Psp Races 1, 5, 7, and 9 in the great northern dry bean germplasm release BelNeb-RR-1. A recombinant inbred population consisting of 76 F₉–derived lines (RILs) from the cross BelNeb-RR-1/A55 was inoculated with Races 1, 5, 7, and 9 and genotyped with 5398 single nucleotide polymorphism markers. Resistance to Races 1, 5, 7, and 9 cosegregated with each other and mapped to the proximal end of Pv04 in a known region of R genes that condition resistance to bean anthracnose and bean rust. Location on Pv04, combined with F₂ allelism tests, confirmed the presence of a new gene, Pse-6, for halo blight resistance. We mapped other unnamed R genes to proximal end of Pv04 that were segregating in Minuette/OSU5630 and Raven/I9365-31 RIL populations and that conditioned resistance to Psp Race 7 and Race 1, respectively. A second R gene, Pse-4, conditioning resistance solely to Race 5, was detected in BelNeb-RR-1 and tentatively positioned on chromosome Pv10. A sequence-characterized amplified region marker SB10.550 tightly linked (1.4 cM) with Pse-6 was generated for potential use in marker-assisted selection for resistance to halo bacterial blight.
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  • Miklas, P. N., Fourie, D., Trapp, J., Davis, J., & Myers, J. R. (2014). New Loci Including Conferring Resistance to Halo Bacterial Blight on Chromosome Pv04 in Common Bean. Crop Science, 54(5), 2099-2108. doi:10.2135/cropsci2014.03.0213
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  • description.provenance : Approved for entry into archive by Erin Clark(erin.clark@oregonstate.edu) on 2014-10-17T18:12:48Z (GMT) No. of bitstreams: 1 DavisJoelHorticultureNewLociIncluding.pdf: 1156594 bytes, checksum: efbfff604a5ea605c1172c63fd8fc75d (MD5)
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