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Multiple genes confer resistance to soybean mosaic virus in the soybean cultivar Hwangkeum

Published online by Cambridge University Press:  16 July 2014

Namhee Jeong  and
Soon-Chun Jeong
Namhee Jeong
Affiliation:
Bio-Evaluation Center, Korea Research Institute of Bioscience and Biotechnology, Cheongwon, Republic of Korea
Soon-Chun Jeong*
Affiliation:
Bio-Evaluation Center, Korea Research Institute of Bioscience and Biotechnology, Cheongwon, Republic of Korea
*
* Corresponding author. E-mail: scjeong@kribb.re.kr
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Abstract

Recombinant inbred lines (RILs) generated from a cross between a cultivated species and its wild progenitor species serve as important germplasm for introgressing valuable genes from a wild species to a cultivated species. During this breeding process, it is equally important to prevent the loss of agronomically important genes in the cultivated species. In an effort to establish an efficient selection system for the single Rsv1 gene conferring durable resistance to soybean mosaic virus (SMV) in the soybean cultivar Hwangkeum (also known as Suweon 97), which is a parent of a RIL population from Hwangkeum (cultivated soybean) × IT182932 (wild soybean), in the present study, we unexpectedly identified an additional necrosis-conditioning gene unmasked by a recombination in the middle of the Rsv1-containing nucleotide-binding leucine-rich repeat gene cluster region and the Rsv3 gene in Hwangkeum. Thus, Hwangkeum contains at least three SMV resistance genes consisting of two tightly linked genes at the Rsv1 locus and the Rsv3 locus. The results of this study provide additional important information for use of the Hwangkeum genome in soybean breeding programmes.

Keywords

Hwangkeumresistance genesoybeansoybean mosaic virus
Type
Research Article
Information
Plant Genetic Resources , Volume 12 , Issue S1: Special issue on the 3rd International Symposium on “Genomics of Plant Genetic Resources” , July 2014 , pp. S41 - S44
Copyright
Copyright © NIAB 2014 

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