Structure, expression, and mapping of two nodule-specific genes identified by mining public soybean EST databases

Jeong, Soon-Chun; Yang, Kiwoung; Park, Jiyoung; Han, Ki Soo; Yu, Seok Jong; Hwang, Tae-Young; Hur, Cheol Goo; Kim, Seong Ho; Park, Pheum Bum; Kim, Hwan Mook; Park, Youn‐Il; Liu, Jang Ryol

doi:10.1016/j.gene.2006.07.015

Cited by 10 publications

(6 citation statements)

References 42 publications

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“…In general, the order and relative distances of the SSR markers within LGs were similar to the information obtained in the public soybean genetic map (Cregan et al 1999; Song et al 2004). An exception was observed for the SSR marker GmEKN, located within a hypothetical nodulin gene and mapped in LG A2 by Jeong et al (2006), while in our study it was mapped on LG D1b (LOD > 10). On average, five markers were mapped per LG, ranging from two on LGs C1, D1a, D2, G and K to eight on LG A1 and B1.…”

Section: Resultscontrasting

confidence: 93%

Mapping of QTLs associated with biological nitrogen fixation traits in soybean

et al. 2013

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Biological nitrogen fi xation (BNF) is a key process, but despite the economic and environmental importance, few studies about quantitative trait loci (QTL) controlling BNF traits are available, even in the economically important crop soybean Glycine max (L.) Merr. In this study, a population of 157 F 2:7 RILs derived from crossing soybean cultivars Bossier (high BNF capacity) and Embrapa 20 (medium BNF capacity) was genotyped with 105 simple sequence repeat markers (SSRs). The genetic map obtained has 1231.2 cM and covers about 50% of the genome, with an average interval of 18.1 cM. Three traits, nodule number (NN), the ratio nodule dry weight (NDW)/NN and shoot dry weight (SDW) were used to evaluate BNF performance. A composite interval mapping for multiple traits method (mCIM) analysis mapped two QTLs for SDW (LGs E and L), three for NN (LGs B1, E and I), and one for NDW/NN (LG I); all QTLs were of small effect (R 2 -values ranging from 1.7% to 10.0%) and explained 15.4%, 13.8% and 6.5% of total variation for these three traits, respectively.

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Section: Resultscontrasting

confidence: 93%

Mapping of QTLs associated with biological nitrogen fixation traits in soybean

et al. 2013

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“…The actin gene primers were: forward 5′-TGGACTCTGGTGAT GGTGTC-3′ and reverse 5′-CTCCAATCCAAACACTGTA-3′. 23 …”

Section: Methodsmentioning

confidence: 99%

Population Structure and Domestication Revealed by High-Depth Resequencing of Korean Cultivated and Wild Soybean Genomes

et al. 2013

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Despite the importance of soybean as a major crop, genome-wide variation and evolution of cultivated soybeans are largely unknown. Here, we catalogued genome variation in an annual soybean population by high-depth resequencing of 10 cultivated and 6 wild accessions and obtained 3.87 million high-quality single-nucleotide polymorphisms (SNPs) after excluding the sites with missing data in any accession. Nuclear genome phylogeny supported a single origin for the cultivated soybeans. We identified 10-fold longer linkage disequilibrium (LD) in the wild soybean relative to wild maize and rice. Despite the small population size, the long LD and large SNP data allowed us to identify 206 candidate domestication regions with significantly lower diversity in the cultivated, but not in the wild, soybeans. Some of the genes in these candidate regions were associated with soybean homologues of canonical domestication genes. However, several examples, which are likely specific to soybean or eudicot crop plants, were also observed. Consequently, the variation data identified in this study should be valuable for breeding and for identifying agronomically important genes in soybeans. However, the long LD of wild soybeans may hinder pinpointing causal gene(s) in the candidate regions.

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“…Genetic mapping has helped identify two nodule-specific genes, GmPGN (a polygalacturonase-encoding gene) and GmEKN (a short nodule-specific gene). The former was located near a known QTL conferring resistance to soybean cyst nematode (SCN) on the molecular linkage group (MLG) B1 and the latter on MLG A2 (Jeong et al 2006). Studies on nodule development in other countries reported that three gene loci, rj1, rj5, and rj6, control the initial nodule development in soybean.…”

Section: Progress On Soybean Molecular Breeding In the Republic Of Koreamentioning

confidence: 99%

Impacts of genomic research on soybean improvement in East Asia

Wang

Jiang

et al. 2019

Theor Appl Genet

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It has been commonly accepted that soybean domestication originated in East Asia. Although East Asia has the historical merit in soybean production, the USA has become the top soybean producer in the world since 1950s. Following that, Brazil and Argentina have been the major soybean producers since 1970s and 1990s, respectively. China has once been the exporter of soybean to Japan before 1990s, yet she became a net soybean importer as Japan and the Republic of Korea do. Furthermore, the soybean yield per unit area in East Asia has stagnated during the past decade. To improve soybean production and enhance food security in these East Asian countries, much investment has been made, especially in the breeding of better performing soybean germplasms. As a result, China, Japan, and the Republic of Korea have become three important centers for soybean genomic research. With new technologies, the rate and precision of the identification of important genomic loci associated with desired traits from germplasm collections or mutants have increased significantly. Genome editing on soybean is also becoming more established. The year 2019 marked a new era for crop genome editing in the commercialization of the first genome-edited plant product, which is a high-oleic-acid soybean oil. In this review, we have summarized the latest developments in soybean breeding technologies and the remarkable progress in soybean breeding-related research in China, Japan, and the Republic of Korea. Communicated by Rajeev K. Varshney.

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Structure, expression, and mapping of two nodule-specific genes identified by mining public soybean EST databases

Cited by 10 publications

References 42 publications

Mapping of QTLs associated with biological nitrogen fixation traits in soybean

Mapping of QTLs associated with biological nitrogen fixation traits in soybean

Population Structure and Domestication Revealed by High-Depth Resequencing of Korean Cultivated and Wild Soybean Genomes

Impacts of genomic research on soybean improvement in East Asia

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