Quantitative trait loci associated with short inter-node length in soybean

Oki, Nobuhiko; Sayama, Takashi; Ishimoto, Masao; Yokota, Y.; Kaga, Akito; Takahashi, Masakazu; Takahashi, Masatoshi

doi:10.1270/jsbbs.18087e

Cited by 4 publications

(7 citation statements)

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“…This result explains why this locus overlaps with the previously reported short internode length QTL (Oki et al. , 2018). It has been reported that a longer internode length may facilitate the trailing growth phenotype (Wu et al.…”

Section: Resultssupporting

confidence: 83%

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Increased copy number of gibberellin 2‐oxidase 8 genes reduced trailing growth and shoot length during soybean domestication

Wang

Wong

et al. 2021

The Plant Journal

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Copy number variations (CNVs) play important roles in crop domestication. However, there is only very limited information on the involvement of CNVs in soybean domestication. Trailing growth and long shoots are soybean adaptations for natural habitats but cause lodging that hampers yield in cultivation. Previous studies have focused on Dt1/2 affecting the indeterminate/determinate growth habit, whereas the possible role of the gibberellin pathway remained unclear. In the present study, quantitative trait locus (QTL) mapping of a recombinant inbred population of 460 lines revealed a trailing-growth-and-shoot-length QTL. A CNV region within this QTL was identified, featuring the apical bud-expressed gibberellin 2-oxidase 8A/B, the copy numbers of which were positively correlated with expression levels and negatively with trailing growth and shoot length, and their effects were demonstrated by transgenic soybean and Arabidopsis thaliana. Based on the fixation index, this CNV region underwent intense selection during the initial domestication process.

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Section: Resultssupporting

confidence: 83%

“…This QTL was significant in all replicates and overlapped with the reported QTL related to short internode length (Oki et al. , 2018). It was also located in the same position of a trailing growth QTL that we reported earlier using a low‐resolution genetic map (Xie et al.…”

Section: Resultssupporting

confidence: 72%

Increased copy number of gibberellin 2‐oxidase 8 genes reduced trailing growth and shoot length during soybean domestication

Wang

Wong

et al. 2021

The Plant Journal

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“…The main stem length of DR was significantly longer than those of YH and TM, but their lodging scores were similar (Table 2). The control of soybean internode extension is important to avoid seed yield reduction caused by lodging (Oki et al, 2018; Umezaki and Yoshida, 1992). In the next field experiment, internode lengths of DR were compared with other indeterminate cultivars (Experiment 3).…”

Section: Resultsmentioning

confidence: 99%

Evaluation of High‐Yielding Canadian Soybean Cultivars Suited to Japanese Growing Conditions

Yamaguchi

Tsuji

Suzuki

et al. 2019

Agrosystems Geosci & Env

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Core Ideas Five Canadian soybean cultivars achieved high yields in Hokkaido, northern Japan, in screening tests. OAC Dorado soybean produced a significantly greater yield than a Hokkaido's leading cultivar. OAC Dorado soybean had six characteristics that were distinct from the Hokkaido cultivars. OAC Dorado soybean is an important germplasm for high‐yield breeding. The broadening of genetic diversity is essential to improving soybean [Glycine max (L.) Merr.] seed yields, and exotic germplasms can be a source of new alleles that improve yield. The stem termination habit is an important trait affecting seed yield in soybean, and this habit can be used to classify soybean into indeterminate, semi‐determinate, and determinate phenotypes. The genetic background and environment determine whether indeterminate phenotypes have a higher yield than determinate phenotypes. Most soybean cultivars developed in high latitude countries such as Canada, Switzerland, and Poland have an indeterminate growth habit, but this is not found in any of the commercial Japanese cultivars. This study investigated high‐yielding Canadian soybean cultivars growing in Hokkaido, northern Japan. Five Canadian cultivars, Haroson, RCAT Angora, Block, RCAT Alliance, and OAC Dorado, produced significantly greater than Hokkaido's leading cultivar Yukihomare in the preliminary screening tests. OAC Dorado also produced a significantly greater yield than Yukihomare in the trials (116%). OAC Dorado had six characteristics that were distinct from the Hokkaido cultivars: an indeterminate growth habit; high pod number, especially on branches; high seed number per pod; long reproductive period; low protein content; and short lower internodes. Our findings indicate that OAC Dorado is an important germplasm for high‐yield breeding and suggest that it may be possible to breed a high‐yielding cultivar with an indeterminate growth habit in Hokkaido.

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“…By using these same RILs, a research group found that the lodging tolerance of 'Toyoharuka' is controlled by a major QTL, qLS19-1, that is not associated with maturity or growth habit on chromosome 19 (Yamaguchi et al 2014). Another QTL on chromosome 13, qSI13-1, the determinant of short internodal length and reduced plant height of the cultivar, 'Y2' (Oki et al 2018), is being used to control plant height to prevent lodging.…”

Section: Progress On Soybean Molecular Breeding In Japanmentioning

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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Quantitative trait loci associated with short inter-node length in soybean

Abstract: In the above article, the name of the fourth author was incorrectly published. Therefore, we herewith would like to publish the correct name.

Cited by 4 publications

References 0 publications

Increased copy number of gibberellin 2‐oxidase 8 genes reduced trailing growth and shoot length during soybean domestication

Increased copy number of gibberellin 2‐oxidase 8 genes reduced trailing growth and shoot length during soybean domestication

Evaluation of High‐Yielding Canadian Soybean Cultivars Suited to Japanese Growing Conditions

Impacts of genomic research on soybean improvement in East Asia

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