Updated on 2025/11/03

写真a

 
OKADA Satoshi
 
Organization
Bioscience and Biotechnology Center Assistant Professor
Graduate School
Graduate School of Bioagricultural Sciences
Title
Assistant Professor

Degree 1

  1. 博士（農学） （ 2018.3   神戸大学 ） 

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Research Interests 3

  1. quantitative trait locus

  2. Genetics

  3. Breeding

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Research Areas 1

  1. Environmental Science/Agriculture Science / Plant genetics and breeding

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Research History 3

  1. Nagoya University   Bioscience and Biotechnology Center   Assistant Professor

    2022.6

  2. 東海国立大学機構名古屋大学生物機能開発利用研究センター   特任助教

    2021.7 - 2022.5

  3. Okayama University   Institute of Plant Science and Resources

    2019.4 - 2021.6

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Professional Memberships 1

  1. 一般社団法人日本育種学会

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Papers 13

  1. Six-gene model underlying heterosis for culm length and flowering date in sorghum (Sorghum bicolor (L.) Moench) (in press) Reviewed

    Scientific Reports     2025

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    Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

  2. Integrated genome-wide differentiation and association analyses identify causal genes underlying breeding-selected grain quality traits in japonica rice. International journal

    Hideki Yoshida, Satoshi Okada, Fanmiao Wang, Shohei Shiota, Masaki Mori, Mayuko Kawamura, Xue Zhao, Yiqiao Wang, Naho Nishigaki, Asako Kobayashi, Kotaro Miura, Shinya Yoshida, Masaru Ikegami, Akitoshi Ito, Lin-Tzu Huang, Yue-Ie Caroline Hsing, Yoshiyuki Yamagata, Yoichi Morinaka, Masanori Yamasaki, Toshihisa Kotake, Eiji Yamamoto, Jian Sun, Ko Hirano, Makoto Matsuoka

    Molecular plant   Vol. 16 ( 9 ) page： 1460 - 1477   2023.9

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    Language：English   Publishing type：Research paper (scientific journal)  

    Improving grain quality is a primary objective in contemporary rice breeding. Japanese modern rice breeding has developed two different types of rice, eating and sake-brewing rice, with different grain characteristics, indicating the selection of variant gene alleles during the breeding process. Given the critical importance of promptly and efficiently identifying genes selected in past breeding for future molecular breeding, we conducted genome scans for divergence, genome-wide association studies, and map-based cloning. Consequently, we successfully identified two genes, OsMnS and OsWOX9D, both contributing to rice grain traits. OsMnS encodes a mannan synthase that increases the white core frequency in the endosperm, a desirable trait for sake brewing but decreases the grain appearance quality. OsWOX9D encodes a grass-specific homeobox-containing transcription factor, which enhances grain width for better sake brewing. Furthermore, haplotype analysis revealed that their defective alleles were selected in East Asia, but not Europe, during modern improvement. In addition, our analyses indicate that a reduction in grain mannan content during African rice domestication may also be caused a defective OsMnS allele due to breeding selection. This study not only reveals the delicate balance between grain appearance quality and nutrition in rice but also provides a new strategy for isolating causal genes underlying complex traits, based on the concept of "breeding-assisted genomics" in plants.

    DOI： 10.1016/j.molp.2023.09.002

    PubMed

  3. High-Density Linkage Maps from Japanese Rice japonica Recombinant Inbred Lines Using Genotyping by Random Amplicon Sequencing-Direct (GRAS-Di). Reviewed International journal Open Access

    Rym Fekih, Yohei Ishimaru, Satoshi Okada, Michihiro Maeda, Ryutaro Miyagi, Takahiro Obana, Kazuyo Suzuki, Minoru Inamori, Hiroyuki Enoki, Masanori Yamasaki

    Plants (Basel, Switzerland)   Vol. 12 ( 4 )   2023.2

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    Language：English   Publishing type：Research paper (scientific journal)  

    The genetic dissection of agronomically important traits in closely related Japanese rice cultivars is still in its infancy mainly because of the narrow genetic diversity within japonica rice cultivars. In an attempt to unveil potential polymorphism between closely related Japanese rice cultivars, we used a next-generation-sequencing-based genotyping method: genotyping by random amplicon sequencing-direct (GRAS-Di) to develop genetic linkage maps. In this study, four recombinant inbred line (RIL) populations and their parents were used. A final RIL number of 190 for RIL71, 96 for RIL98, 95 for RIL16, and 94 for RIL91 derived from crosses between a common leading Japanese rice cultivar Koshihikari and Yamadanishiki, Taichung 65, Fujisaka 5, and Futaba, respectively, and the parent plants were subjected to GRAS-Di library construction and sequencing. Approximately 438.7 Mbp, 440 Mbp, 403.1 Mbp, and 392 Mbp called bases covering 97.5%, 97.3%, 98.3%, and 96.1%, respectively, of the estimated rice genome sequence at average depth of 1× were generated. Analysis of genotypic data identified 1050, 1285, 1708, and 1704 markers for each of the above RIL populations, respectively. Markers generated by GRAS-Di were organized into linkage maps and compared with those generated by GoldenGate SNP assay of the same RIL populations; the average genetic distance between markers showed a clear decrease in the four RIL populations when we integrated markers of both linkage maps. Genetic studies using these markers successfully localized five QTLs associated with heading date on chromosomes 3, 6, and 7 and which previously were identified as Hd1, Hd2, Hd6, Hd16, and Hd17. Therefore, GRAS-Di technology provided a low cost and efficient genotyping to overcome the narrow genetic diversity in closely related Japanese rice cultivars and enabled us to generate a high density linkage map in this germplasm.

    DOI： 10.3390/plants12040929

    Open Access

    PubMed

  4. An analysis of sugary endosperm in sorghum: Characterization of mutant phenotypes depending on alleles of the corresponding starch debranching enzyme. Reviewed International journal Open Access

    Shumpei Hashimoto, Satoshi Okada, Satoko Araki-Nakamura, Kozue Ohmae-Shinohara, Kotaro Miura, Hideo Kawaguchi, Chiaki Ogino, Shigemitsu Kasuga, Takashi Sazuka

    Frontiers in plant science   Vol. 14   page： 1114935 - 1114935   2023

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    Language：English   Publishing type：Research paper (scientific journal)  

    Sorghum is the fifth most important cereal crop. Here we performed molecular genetic analyses of the 'SUGARY FETERITA' (SUF) variety, which shows typical sugary endosperm traits (e.g., wrinkled seeds, accumulation of soluble sugars, and distorted starch). Positional mapping indicated that the corresponding gene was located on the long arm of chromosome 7. Within the candidate region of 3.4 Mb, a sorghum ortholog for maize Su1 (SbSu) encoding a starch debranching enzyme ISA1 was found. Sequencing analysis of SbSu in SUF uncovered nonsynonymous single nucleotide polymorphisms (SNPs) in the coding region, containing substitutions of highly conserved amino acids. Complementation of the rice sugary-1 (osisa1) mutant line with the SbSu gene recovered the sugary endosperm phenotype. Additionally, analyzing mutants obtained from an EMS-induced mutant panel revealed novel alleles with phenotypes showing less severe wrinkles and higher Brix scores. These results suggested that SbSu was the corresponding gene for the sugary endosperm. Expression profiles of starch synthesis genes during the grain-filling stage demonstrated that a loss-of-function of SbSu affects the expression of most starch synthesis genes and revealed the fine-tuned gene regulation in the starch synthetic pathway in sorghum. Haplotype analysis using 187 diverse accessions from a sorghum panel revealed the haplotype of SUF showing severe phenotype had not been used among the landraces and modern varieties. Thus, weak alleles (showing sweet and less severe wrinkles), such as in the abovementioned EMS-induced mutants, are more valuable for grain sorghum breeding. Our study suggests that more moderate alleles (e.g. produced by genome editing) should be beneficial for improving grain sorghum.

    DOI： 10.3389/fpls.2023.1114935

    Open Access

    PubMed

  5. Metabolic engineering for 4-aminophenylalanine production from lignocellulosic biomass by recombinant <i>Escherichia coli</i> Open Access

    Hideo Kawaguchi, Shunsuke Masuo, Keiko Wakai, Naoki Takaya, Tomohisa Hasunma, Tatsuo Kaneko, Satoshi Okada, Takashi Sazuka, Chiaki Ogino, Akihiko Kondo

    RSC Sustainability   Vol. 1 ( 4 ) page： 1043 - 1054   2023

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    Publishing type：Research paper (scientific journal)   Publisher：Royal Society of Chemistry (RSC)  

    4-Aminophenylalanine as a diamine monomer to synthesize unique biopolyimides was produced from lignocellulosic biomass by microbial fermentation. Fermentation inhibitors present in lignocellulosic hydrolysate of sorghum bagasse were identified.

    DOI： 10.1039/d3su00053b

    Open Access

  6. FE UPTAKE-INDUCING PEPTIDE1 maintains Fe translocation by controlling Fe deficiency response genes in the vascular tissue of Arabidopsis. Reviewed International journal Open Access

    Satoshi Okada, Gui J Lei, Naoki Yamaji, Sheng Huang, Jian F Ma, Keiichi Mochida, Takashi Hirayama

    Plant, cell & environment   Vol. 45 ( 11 ) page： 3322 - 3337   2022.11

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    Language：English   Publishing type：Research paper (scientific journal)  

    FE UPTAKE-INDUCING PEPTIDE1 (FEP1), also named IRON MAN3 (IMA3) is a short peptide involved in the iron deficiency response in Arabidopsis thaliana. Recent studies uncovered its molecular function, but its physiological function in the systemic Fe response is not fully understood. To explore the physiological function of FEP1 in iron homoeostasis, we performed a transcriptome analysis using the FEP1 loss-of-function mutant fep1-1 and a transgenic line with oestrogen-inducible expression of FEP1. We determined that FEP1 specifically regulates several iron deficiency-responsive genes, indicating that FEP1 participates in iron translocation rather than iron uptake in roots. The iron concentration in xylem sap under iron-deficient conditions was lower in the fep1-1 mutant and higher in FEP1-induced transgenic plants compared with the wild type (WT). Perls staining revealed a greater accumulation of iron in the cortex of fep1-1 roots than in the WT root cortex, although total iron levels in roots were comparable in the two genotypes. Moreover, the fep1-1 mutation partially suppressed the iron overaccumulation phenotype in the leaves of the oligopeptide transporter3-2 (opt3-2) mutant. These data suggest that FEP1 plays a pivotal role in iron movement and in maintaining the iron quota in vascular tissues in Arabidopsis.

    DOI： 10.1111/pce.14424

    PubMed

  7. Genetic and epistatic effects for grain quality and yield of three grain-size QTLs identified in brewing rice (Oryza sativa L.). Reviewed

    Satoshi Okada, Ken Iijima, Kiyosumi Hori, Masanori Yamasaki

    Molecular Breeding   Vol. 40 ( 9 )   2020.9

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

    Rice (Oryza sativaL.) in Japan is not only a food staple but also an important material for the Japanese alcoholic beverage,sake. The grain used insakebrewing has different characters from the cooking rice grain, including a large grain size and high white-core expression rate (WCE). Because large-sized grains often have a heavy grain weight and higher yield, this trait is also important for cooking rice. Chalky grains, such as white-core or white-belly grains, are not ideal as cooking rice. Here, we report that three grain-size quantitative trait loci (QTLs;qGL4-2,qGWh5,qGWh10), derived from the brewing cultivar, Yamadanishiki, affect grain shape, chalky grain rate, and yield, using near isogenic and pyramiding lines in the genetic background of the cooking cultivar, Koshihikari. First, these QTLs influenced multiple components of grain shape, where epistatic effects were detected betweenqGL4-2andqGWh5, for grain width and thickness, and betweenqGL4-2andqGWh10, for grain length. Therefore, these QTLs may coordinate to control grain shape. Second, lines harboringqGWh5orqGWh10at the Yamadanishiki allele exhibited increased WCE, whereas lines withqGL4-2andqGWh10exhibited decreased white-belly grain rate (WBR). Thus, grain shape is associated with the occurrence of chalky grain, where the chalky type depends on the QTL. Finally, we used total panicle weight of plants as a simplified rice yield index, and a promising line pyramidingqGL4-2andqGWh5emerged. In conclusion,qGL4-2would be useful for the breeding of cooking rice, to decrease WBR, whileqGWh5andqGWh10were definitely more beneficial for that of brewing rice, to increase grain weight and WCE.

    DOI： 10.1007/s11032-020-01166-0

    Web of Science

    Scopus

    Other Link： https://link.springer.com/article/10.1007/s11032-020-01166-0/fulltext.html

  8. Life-Course Monitoring of Endogenous Phytohormone Levels under Field Conditions Reveals Diversity of Physiological States among Barley Accessions Reviewed

    Takashi Hirayama, Daisuke Saisho, Takakazu Matsuura, Satoshi Okada, Kotaro Takahagi, Asaka Kanatani, Jun Ito, Hiroyuki Tsuji, Yoko Ikeda, Keiichi Mochida

    Plant and Cell Physiology   Vol. 61 ( 8 ) page： 1438 - 1448   2020.4

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Oxford University Press (OUP)  

    Abstract

    Agronomically important traits often develop during the later stages of crop growth as consequences of various plant–environment interactions. Therefore, the temporal physiological states that change and accumulate during the crop’s life course can significantly affect the eventual phenotypic differences in agronomic traits among crop varieties. Thus, to improve productivity, it is important to elucidate the associations between temporal physiological responses during the growth of different crop varieties and their agronomic traits. However, data representing the dynamics and diversity of physiological states in plants grown under field conditions are sparse. In this study, we quantified the endogenous levels of five phytohormones — auxin, cytokinins (CKs), ABA, jasmonate and salicylic acid — in the leaves of eight diverse barley (Hordeum vulgare) accessions grown under field conditions sampled weekly over their life course to assess the ongoing fluctuations in hormone levels in the different accessions under field growth conditions. Notably, we observed enormous changes over time in the development-related plant hormones, such as auxin and CKs. Using 3′ RNA-seq-based transcriptome data from the same samples, we investigated the expression of barley genes orthologous to known hormone-related genes of Arabidopsis throughout the life course. These data illustrated the dynamics and diversity of the physiological states of these field-grown barley accessions. Together, our findings provide new insights into plant–environment interactions, highlighting that there is cultivar diversity in physiological responses during growth under field conditions.

    DOI： 10.1093/pcp/pcaa046

    PubMed

    Other Link： http://academic.oup.com/pcp/article-pdf/61/8/1438/33662758/pcaa046.pdf

  9. Training instance segmentation neural network with synthetic datasets for crop seed phenotyping. Reviewed International journal Open Access

    Yosuke Toda, Fumio Okura, Jun Ito, Satoshi Okada, Toshinori Kinoshita, Hiroyuki Tsuji, Daisuke Saisho

    Communications biology   Vol. 3 ( 1 ) page： 173 - 173   2020.4

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    In order to train the neural network for plant phenotyping, a sufficient amount of training data must be prepared, which requires time-consuming manual data annotation process that often becomes the limiting step. Here, we show that an instance segmentation neural network aimed to phenotype the barley seed morphology of various cultivars, can be sufficiently trained purely by a synthetically generated dataset. Our attempt is based on the concept of domain randomization, where a large amount of image is generated by randomly orienting the seed object to a virtual canvas. The trained model showed 96% recall and 95% average Precision against the real-world test dataset. We show that our approach is effective also for various crops including rice, lettuce, oat, and wheat. Constructing and utilizing such synthetic data can be a powerful method to alleviate human labor costs for deploying deep learning-based analysis in the agricultural domain.

    DOI： 10.1038/s42003-020-0905-5

    Open Access

    Web of Science

    Scopus

    PubMed

  10. Validation of a quantitative trait locus for the white-core expression rate of grain on chromosome 6 in a brewing rice cultivar and development of DNA markers for marker-assisted selection Reviewed Open Access

    Satoshi Okada, Masanori Yamasaki

    Breeding Science   Vol. 69 ( 3 ) page： 401 - 409   2019

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    Publishing type：Research paper (scientific journal)   Publisher：Japanese Society of Breeding  

    DOI： 10.1270/jsbbs.18166

    Open Access

    PubMed

  11. A novel Rice QTL qOPW11 Associated with Panicle Weight Affects Panicle and Plant Architecture Reviewed Open Access

    Satoshi Okada, Megumi Sasaki, Masanori Yamasaki

    Rice   Vol. 11 ( 1 )   2018.9

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    Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

    DOI： 10.1186/s12284-018-0246-x

    Open Access

    PubMed

    Other Link： http://link.springer.com/article/10.1186/s12284-018-0246-x/fulltext.html

  12. Identification of QTLs for rice grain size using a novel set of chromosomal segment substitution lines derived from Yamadanishiki in the genetic background of Koshihikari Reviewed Open Access

    Satoshi Okada, Akio Onogi, Ken Iijima, Kiyosumi Hori, Hiroyoshi Iwata, Wakana Yokoyama, Miki Suehiro, Masanori Yamasaki

    Breeding Science   Vol. 68 ( 2 ) page： 210 - 218   2018

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    Publishing type：Research paper (scientific journal)   Publisher：Japanese Society of Breeding  

    DOI： 10.1270/jsbbs.17112

    Open Access

    Scopus

    PubMed

  13. Genetic dissection of grain traits in Yamadanishiki, an excellent sake-brewing rice cultivar Reviewed

    Satoshi Okada, Miki Suehiro, Kaworu Ebana, Kiyosumi Hori, Akio Onogi, Hiroyoshi Iwata, Masanori Yamasaki

    Theoretical and Applied Genetics   Vol. 130 ( 12 ) page： 2567 - 2585   2017.9

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MISC 15

  1. Field transcriptome analysis unveils novel genetic pathways for early heading in spring barley

    KIM June-Sik, KIM June-Sik, 井藤純, 上原由紀子, 高萩航太郎, 金谷麻加, 清水みなみ, 井上小槙, 岡田聡史, 岡田聡史, 松浦恭和, 服部公央亮, 池田陽子, 最相大輔, 辻寛之, 辻寛之, 平山隆志, 佐藤和広, 持田恵一, 持田恵一, 持田恵一, 持田恵一, 持田恵一

    日本植物生理学会年会(Web)   Vol. 65th   2024

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  2. Dissection of developmental state transition in the shoot apical meristem of barley by single meristem RNA-seq

    井藤純, 野村有子, 高萩航太郎, KIM J., KIM J., 鹿島誠, 岡田聡史, 佐藤奈緒, 清水みなみ, 最相大輔, 持田恵一, 平山隆志, 辻寛之, 辻寛之

    育種学研究   Vol. 25   2023

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  3. Data driven crop design technology

    平山隆志, 最相大輔, 井藤純, 服部公央亮, 岡田聡史, 池田陽子, 梅崎太造, 辻寛之, 持田恵一

    日本植物生理学会年会(Web)   Vol. 63rd   2022

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  4. Developmental state transition in the shoot apical meristem of barley

    井藤純, 野村有子, 高萩航太郎, 岡田聡史, 久下修平, 佐藤奈緒, 新井駿一, 松本大輝, 杉村みどり, 関緑, 服部公央亮, 梅崎太造, 池田陽子, 最相大輔, 持田恵一, 平山隆志, 辻寛之

    日本植物生理学会年会(Web)   Vol. 63rd   2022

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  5. Gene expression analysis of the unique inflorescence structure in barley

    井藤純, 佐藤奈緒, 野村有子, 新井駿一, 高萩航太郎, 岡田聡史, 岡田聡史, 武田(神谷)紀子, 豊岡公徳, 最相大輔, 平山隆志, 持田恵一, 辻寛之, 辻寛之

    育種学研究   Vol. 24   2022

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  6. Developmental trajectory analysis of the shoot apex in barley by single meristem transcriptome

    井藤純, 野村有子, 佐藤奈緒, 岡田聡史, 高萩航太郎, 杉村みどり, 関緑, 最相大輔, 持田恵一, 平山隆志, 辻寛之

    育種学研究   Vol. 23   2021

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  7. Data driven crop design technology

    平山隆志, 岡田聡史, 最相大輔, 井藤純, 服部公央亮, 池田陽子, 梅崎太造, 辻寛之, 持田恵一

    日本分子生物学会年会プログラム・要旨集(Web)   Vol. 44th   2021

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  8. Developmental trajectory analysis of barley life cycle using field transcriptome data

    岡田聡史, 最相大輔, 金谷麻加, 金谷麻加, 池田陽子, 井藤純, 辻寛之, 井上小槙, 上原由紀子, 清水みなみ, 持田恵一, 持田恵一, 持田恵一, 平山隆志

    育種学研究   Vol. 23   2021

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  9. Pseudo-time transition of barley life cycle in the field

    最相大輔, 岡田聡史, 金谷麻加, 金谷麻加, 池田陽子, 井藤純, 辻寛之, 持田恵一, 持田恵一, 持田恵一, 平山隆志

    育種学研究   Vol. 23   2021

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  10. Genomic research across the barley life cycle toward ’preemptive breeding’

    最相大輔, 岡田聡史, 金谷麻加, 金谷麻加, 池田陽子, 井藤純, 辻寛之, 持田恵一, 持田恵一, 持田恵一, 平山隆志

    育種学研究   Vol. 23   2021

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  11. Intraspecific variation of field growth dynamics in barley

    最相大輔, 岡田聡史, 井藤純, 辻寛之, 高萩航太郎, 高萩航太郎, 持田恵一, 持田恵一, 持田恵一, 平山隆志

    育種学研究   Vol. 22   2020

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  12. Genetic analysis on heading time of barley (Hordeum vulgare) under multiple environments

    岡田聡史, 最相大輔, 井藤純, 辻寛之, 高萩航太郎, 持田恵一, 持田恵一, 平山隆志

    育種学研究   Vol. 22   2020

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  13. 水稲品種「コシヒカリ」と「山田錦」との交雑系統群を用いた粒大および心白に関するQTL解析

    岡田聡史, 末廣美紀, 江花薫子, 堀清純, 小野木章雄, 岩田洋佳, 山崎将紀

    育種学研究   Vol. 16   page： 23   2014.9

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    Language：Japanese  

    DOI： 10.1270/jsbbr.16.23

    J-GLOBAL

  14. 表現形質評価システム「FieldBook」を用いたイネ稈長と穂長の計測

    前田道弘, 岡田聡史, 末廣美紀, 合田喬, 伊藤田鶴子, 山本洋, 最相大輔, GARCIA Arturo, 山崎将紀

    育種学研究   Vol. 16   2014

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  15. 「FieldBook」を使ったオオムギ遺伝資源の大規模表現型測定

    伊藤大樹, 岡田聡史, ARTURO Garcia, 石井誠, 伊藤田鶴子, 山本洋, 山崎将紀, 最相大輔, 佐藤和広

    育種学研究   Vol. 15   2013

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To the head of MISC.▲

Presentations 57

  1. Genome-wide association study of the sorghum root system in the early growth stage International conference

    Okada S, Inukai Y, Zhenyu H, Nishiuchi S, Hashimoto S, Araki-Nakamura S, Ohmae-Shinohara K, Sazuka T

    PAG Australia  2023.9.21 

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    Event date： 2023.9

    Language：English   Presentation type：Poster presentation  

    Venue：Perth, Australia  

  2. The sixth important locus for hybrid vigor in a Japanese F1 variety of sorghum International conference

    Okada S, Kikuchi T, Wake T, Hashimoto S, Araki-Nakamura S, Ohmae-Shinohara K, Miura K, Kawaguchi H, Ogino C, Kasuga S, Sazuka T

    Sorghum in the 21st Century Global Sorghum Conference  2023.6.7 

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    Event date： 2023.6

    Language：English   Presentation type：Poster presentation  

    Venue：Montpellier, France  

  3. GRAS-Di技術を利用した日本水稲品種交雑集団の連鎖地図作成と遺伝解析

    山崎 将紀, 小野 凌汰, Rym Fekih, 岡田 聡史, 前田 道弘, 堀 清純, 宮城 竜太郎, 尾鼻 孝浩, 榎 宏征

    日本育種学会第143回講演会  2023.3.18 

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    Event date： 2023.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  4. ソルガムの雑種強勢の一部をオーキシン輸送関連遺伝子Dw3の超優性効果で説明する試み

    橋本 舜平, 岡田 聡史, 中村(荒木)聡子, 篠原(大前)梢, 三浦 孝太郎, 川口 秀夫, 荻野 千秋, 春日 重光, 佐塚 隆志

    日本育種学会第143回講演会  2023.3.18 

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    Event date： 2023.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  5. ソルガムF1品種「天高」の雑種強勢に重要な第6の遺伝子

    菊池 樹, 岡田 聡史, 橋本 舜平, 中村(荒木) 聡子, 大前(篠原) 梢, 三浦 孝太郎, 川口 秀夫, 荻野 千秋, 春日 重光, 佐塚 隆志

    日本育種学会第143回講演会  2023.3.18 

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    Event date： 2023.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  6. ソルガムF1 品種「天高」の雑種強勢に重要な第6の遺伝子座の同定

    菊池樹、岡田聡史、橋本舜平、中村聡子、大前梢、三浦孝太郎、川口秀夫、荻野千秋、春日重光、佐塚隆志

    第29回日本育種学会中部地区談話会  2022.12.17 

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    Event date： 2022.12

    Presentation type：Oral presentation (general)  

  7. 名大ソルガムパネルを用いた根系に関するゲノムワイド関連解析

    岡田聡史、胡振宇、犬飼義明、西内俊策、山内卓樹、中村 (荒木) 聡子、篠原(大前) 梢、川口秀夫、荻野千秋、三浦孝太郎、佐塚隆志

    第13 回ソルガムワークショップ  2022.11.21 

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    Event date： 2022.11

    Presentation type：Oral presentation (general)  

  8. ソルガム由来成分による微生物発酵促進作用に関する網羅的遺伝子発現解析

    川口秀夫、兵頭梓、吉原久美子、岡田聡史、佐塚隆志

    第13 回ソルガムワークショップ  2022.11.21 

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    Event date： 2022.11

    Presentation type：Oral presentation (general)  

  9. 天高の高バイオマス性を説明する第6の遺伝子

    菊池樹、岡田聡史、橋本舜平、中村聡子、篠原梢、三浦孝太郎、川口秀夫、荻野千秋、春日重光、佐塚隆志

    第13 回ソルガムワークショップ  2022.11.21 

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    Event date： 2022.11

    Language：Japanese   Presentation type：Oral presentation (general)  

  10. Genome-wide association studies for root-system breeding of sorghum.

    2022.9.24 

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    Event date： 2022.9

    Language：Japanese   Presentation type：Poster presentation  

  11. ‘先制育種’を指向する生活環横断的なオオムギのゲノム研究

    最相大輔, 岡田聡史, 金谷麻加, 池田陽子, 井藤純, 辻寛之, 持田恵一, 平山隆志

    日本育種学会第140講演会 

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    Event date： 2021.9

    Presentation type：Symposium, workshop panel (nominated)  

  12. シングルメリステムトランスクリプト―ムによるオオムギ茎頂部の発生トラジェクトリ解析．

    井藤純, 野村有子, 佐藤奈緒, 岡田聡史, 高萩航太郎, 杉村みどり, 関緑, 最相大輔, 持田恵一, 平山隆志, 辻寛之

    日本育種学会第140回講演会  2021.9 

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    Event date： 2021.9

    Language：Japanese   Presentation type：Oral presentation (general)  

  13. 圃場でのオオムギ生活環の擬時間変遷

    最相大輔, 岡田聡史, 金谷麻加, 池田陽子, 井藤純, 辻寛之, 持田恵一, 平山隆志

    日本育種学会第139回講演会 

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    Event date： 2021.3

    Language：Japanese   Presentation type：Poster presentation  

  14. 圃場トランスクリプトームデータを用いたオオムギ生活環の生長トラジェクトリ解析

    岡田聡史, 最相大輔, 金谷麻加, 池田陽子, 井藤純, 辻寛之, 井上小槙, 上原由紀子, 清水みなみ, 持田恵一, 平山隆志

    日本育種学会第139回講演会 

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    Event date： 2021.3

    Language：Japanese   Presentation type：Poster presentation  

  15. 圃場オオムギにおけるヒストン修飾と遺伝子発現のゲノムワイド時系列解析

    池田陽子, 岡田聡史, 金谷麻加, 井上小槙, 最相大輔, 井藤純, 辻寛之, 持田恵一, 平山隆志

    第62回日本植物生理学会年会 

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    Event date： 2021.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  16. 圃場オオムギのライフコースモニタリングによるホルモン変動と成長および環境要因との相互作用

    平山隆志, 最相大輔, 松浦恭和, 井藤純, 岡田聡史, 金谷麻加, 辻寛之, 持田恵一

    第62回日本植物生理学会年会 

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    Event date： 2021.3

    Language：Japanese   Presentation type：Poster presentation  

  17. オオムギの圃場生長動態の種内変異

    最相大輔, 岡田聡史, 井藤純, 辻寛之, 高萩航太郎, 持田恵一, 平山隆志

    日本育種学会第137回講演会 

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    Event date： 2020.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  18. Interspecific variation of field growth dynamics in barley.

    2020.3.29 

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    Event date： 2020.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  19. Genetic analysis on heading time of barley (Hordeum vulgare) under multiple environments.

    Satoshi Okada, Jun Ito, Hiroyuki Tsuji, Kotaro Takahagi, Keiichi Mochida, Daisuke Saisho, Takashi Hirayama

    2020.3.29 

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    Event date： 2020.3

    Language：Japanese   Presentation type：Poster presentation  

  20. 圃場環境におけるオオムギ系統間の生理状態の多様性

    平山隆志, 高萩航太郎, 井上小槙, 山口由紀子, 金谷麻加, 最相大輔, 松浦恭和, 岡田聡史, 井藤純, 池田陽子, 松下康弘, 辻寛之, 持田恵一

    第61回日本植物生理学会年会 

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    Event date： 2020.3

    Language：Japanese   Presentation type：Poster presentation  

  21. 一穂重 QTL である qOPW11はイネの穂の分枝と分げつ形成に影響を及ぼす

    岡田聡史, 佐々木萌, 山崎将紀

    日本育種学会第135回講演会 

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    Event date： 2019.3

    Language：Japanese   Presentation type：Poster presentation  

  22. GRAS-Di技術を用いた日本水稲組換え自殖系統群の連鎖地図作成

    石丸陽平, Rym Fekih, 岡田聡史, 宮城竜太郎, 尾鼻孝浩, 鈴木一代, 稲森稔, 榎宏征, 山崎将紀

    日本育種学会第135回講演会 

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    Event date： 2019.3

    Language：Japanese   Presentation type：Poster presentation  

  23. Gene expression analysis of the unique inflorescence structure in barley.

    2022.9.24 

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    Language：Japanese   Presentation type：Poster presentation  

  24. ethanol

    Satoshi Okada

    129th Japanese Breeding Conference  2016.3 

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    Language：Japanese   Presentation type：Poster presentation  

  25. QTL analysis for rice grain size and white core using crossed populations between Koshihikari and Yamadanishiki

    Satoshi Okada

    126th Japanese Breeding Conference  2014.9.26 

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    Language：Japanese   Presentation type：Oral presentation (general)  

  26. 脱炭素社会構築を目指したジョンソングラスの遺伝資源調査

    2025.12.23 

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    Language：Japanese   Presentation type：Poster presentation  

    Venue：Nagoya  

  27. Influence on chalky grain including white-core grain by grain size QTLs identified from Yamadanishiki, a brewing rice cultivar.

    Satoshi Okada

    134th Japanese Breeding Conference  2018.9 

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    Language：Japanese   Presentation type：Poster presentation  

  28. Identification of QTLs for expression of white-core derived from Yamadanishiki, a brewing rice cultivar.

    Satoshi Okada

    2018.7 

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    Language：Japanese   Presentation type：Poster presentation  

  29. The verification of QTLs for White Core expression rate which “Yamadanishiki”, a brewing cultivar has.

    Satoshi Okada

    128th Japanese Breeding Conference  2015.9 

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    Language：Japanese   Presentation type：Poster presentation  

  30. Examination of phenotyping for precise mapping of a white-core QTL, qWCY6 derived from Yamadanishiki, a brewing rice cultivar.

    Satoshi Okada

    132th Japanese Breeding Conference  2017.10 

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    Language：Japanese   Presentation type：Poster presentation  

  31. QTL analysis of white core and grain size about “Yamadanishiki”, a brewing rice cultivar (2) and the development of white core.

    Satoshi Okada

    127th Japanese Breeding Conference  2015.3.21 

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    Language：Japanese   Presentation type：Poster presentation  

  32. NAM

    Satoshi Okada

    129th Japanese Breeding Conference  2016.3 

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    Language：Japanese   Presentation type：Poster presentation  

  33. 天高の高バイオマス性を説明する第6の遺伝子

    菊池樹, 岡田聡史, 橋本舜平, 中村聡子, 篠原梢, 三浦孝太郎, 川口秀夫, 荻野千秋, 春日重光, 佐塚隆志

    第13 回ソルガムワークショップ  2022.11.21 

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    Language：Japanese   Presentation type：Oral presentation (general)  

  34. 名大ソルガムパネルを用いた根系に関するゲノムワイド関連解析

    岡田聡史, 胡振宇, 犬飼義明, 西内俊策, 山内卓樹, 中村, 荒木) 聡子, 篠原(大前) 梢, 川口秀夫, 荻野千秋, 三浦孝太郎, 佐塚隆志

    第13 回ソルガムワークショップ  2022.11.21 

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    Language：Japanese   Presentation type：Oral presentation (general)  

  35. 6つの遺伝子でソルガムF1の雑種強勢を説明する

    2025.11.23 

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    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Nagoya  

  36. Genetic Analysis of White Core and Grain Size of “Yamadanishiki”, a Japanese-sake cultivar. International conference

    Okada, S, M. Suehiro, K. Ebana, K. Hori, A. Onogi, H. Iwata, M. Yamasaki

    57ndAnnual Maize Genetics Conference  2015.3.12 

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    Language：English   Presentation type：Poster presentation  

    Venue：St. Charles, IL, USA  

  37. QTL Analysis of White Core Grain in a Rice Cultivar, “Yamadanishiki” for Brewing Japanese Rice. International conference

    Satoshi Okada, Kiyosumi Hori, Kaworu Ebana, Akio Onogi, Hiroyoshi Iwata, Masanori Yamasaki

    Plant and Animal Genome XXIV Conference  2016.1 

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    Language：English   Presentation type：Poster presentation  

    Venue：own and Country Hotel, San Diego, CA  

  38. Rice nested association mapping population and its phenotyping. International conference

    Yamasaki, M, A. Garcia, M. Maeda, S. Okada, T. Goda, T. Yoshioka, M. Suehiro, W. Yokoyama, R. Takayama, D. Saisho, H. Yamamoto, K. Hori, K. Ebana, H. Iwata, K. Doi

    57nd Annual Maize Genetics Conference  2015.3.12 

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    Language：English   Presentation type：Poster presentation  

    Venue：St. Charles, IL, USA  

  39. Verification of epistatic effects for hybrid vigor of sorghum plant height International conference

    Satoshi Okada, Shumpei Hashimoto, Satoko Araki-Nakamura, Kozue Ohmae-Shinohara, Shigemitsu Kasuga, Takashi Sazuka

    PAG32  2025.1.13 

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    Language：English   Presentation type：Poster presentation  

    Venue：San Diego, CA, USA  

  40. high

    Satoshi Okada

    124th Japanese Breeding Conference  2013.10.12 

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    Language：Japanese   Presentation type：Oral presentation (general)  

  41. Population structure analysis of Japanese sorghum landrace for genetic analysis of ‘Amakibi’

    2025.9.25 

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    Language：Japanese   Presentation type：Poster presentation  

    Venue：Sapporo  

  42. Pyramiding effects of the Yamadanishiki alleles at large grain QTLs in the Koshihikari genetic background.

    Satoshi Okada

    131th Japanese Breeding Conference  2017.3 

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    Language：Japanese   Presentation type：Poster presentation  

  43. Development and QTL verification of chromosomal segment substitution lines derived from Yamadanishiki with Koshihikari genetic background.

    Satoshi Okada

    129th Japanese Breeding Conference  2016.3 

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    Language：Japanese   Presentation type：Oral presentation (general)  

  44. Yamadanishiki

    Satoshi Okada

    2014.12.25 

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    Language：Japanese   Presentation type：Poster presentation  

  45. ジョンソングラス(Sorghum halepense)の頑健性を活用した新しいエネルギー作物育種の可能性

    2025.3.24 

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    Language：Japanese   Presentation type：Poster presentation  

    Venue：Tokyo  

  46. ジョンソングラスの地下茎を利活用したDAC作物育種に向けて

    2025.6.24 

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    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Obihiro  

  47. スイートソルガムのスイート性のおもしろさと解析の難しさ

    2025.11.23 

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    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Nagoya  

  48. ソルガムF1 品種「天高」の雑種強勢に重要な第6の遺伝子座の同定

    菊池樹, 岡田聡史, 橋本舜平, 中村聡子, 大前梢, 三浦孝太郎, 川口秀夫, 荻野千秋, 春日重光, 佐塚隆志

    第29回日本育種学会中部地区談話会  2022.12.17 

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    Language：Japanese   Presentation type：Oral presentation (general)  

  49. ソルガムF1品種の純系化育種：優性アレル集積系統の高バイオマス高糖性育種.

    2025.9.23 

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    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Kobe  

  50. ソルガムF₁品種「風立」の稈長における雑種強勢の遺伝解析

    2025.3.25 

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    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Sendai  

  51. ソルガムF₁品種「風立」の稈長における雑種強勢の遺伝解析

    2025.12.24 

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    Language：Japanese   Presentation type：Poster presentation  

    Venue：Ina  

  52. ソルガムの草丈に関する雑種強勢におけるエピスタシスおよび疑似超優性の検証

    2025.10.29 

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    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Nagoya  

  53. ソルガムの雑種強勢におけるエピスタシス効果の検証

    2024.9.20 

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    Language：Japanese   Presentation type：Poster presentation  

    Venue：Hiroshima  

  54. ソルガム参照ゲノム配列を複数活用したトランスクリプトーム解析による搾汁液高糖性の解明

    2025.9.23 

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    Language：Japanese   Presentation type：Poster presentation  

    Venue：Kobe  

  55. ソルガム由来成分による微生物発酵促進作用に関する網羅的遺伝子発現解析

    川口秀夫, 兵頭梓, 吉原久美子, 岡田聡史, 佐塚隆志

    第13 回ソルガムワークショップ  2022.11.21 

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    Language：Japanese   Presentation type：Oral presentation (general)  

  56. 名古屋大学と信州大学によるソルガム育種の新展開へ向けて

    2025.11.24 

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    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：Tsukuba  

  57. 外来植物ジョンソングラスは栽培ソルガム育種の地下部改良の遺伝資源になり得るか？

    2024.9.20 

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    Language：Japanese   Presentation type：Poster presentation  

    Venue：Hiroshima  

▼display all

To the head of Presentations.▲

KAKENHI (Grants-in-Aid for Scientific Research) 3

  1. 量的形質遺伝子座における新しい解析アプローチによるソルガム高糖性遺伝子の解明

    Grant number：22K14868  2022.4 - 2025.3

    科学研究費助成事業  若手研究

    岡田 聡史

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    Authorship：Principal investigator 

    Grant amount：\4420000 （ Direct Cost: \3400000 、 Indirect Cost：\1020000 ）

    ソルガムは、高バイオマス性と高糖性（茎に糖液を蓄積する性質）を兼ね備えることができる重要なエネルギー作物の一つである。しかし、ソルガムの高糖性は環境要因や複雑な遺伝的構造が絡み合った複雑形質と考えら、これまで責任遺伝子の単離が困難であった。本研究では、①糖度と相関する発現変動を示す遺伝子群をマーカーとし、②QTL領域内の部分的な断片置換系統群とマーカー遺伝子群の発現量を比較することで領域を狭め、これを繰り返すという新しい責任遺伝子単離法（CSSLs-eQTL）を提案する。この方法を確立し、ソルガムの高糖性遺伝子を同定することで、糖蓄積メカニズム解明への基盤構築を行う。

  2. 東アジアスイートソルガムの起源と伝播及びその高糖性遺伝子座の研究

    Grant number：25K18218  2025.4 - 2028.3

    日本学術振興会  科学研究費助成事業  若手研究

    岡田 聡史

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    Authorship：Principal investigator 

    Grant amount：\4680000 （ Direct Cost: \3600000 、 Indirect Cost：\1080000 ）

    温帯で栽培できる唯一の糖料作物であるスイートソルガム（日本ではアマキビと呼ばれる）は、バイオものづくりの最適な原料である。そのため、それらの遺伝的多様性や高糖性遺伝子座の解明は、高糖性品種の育種戦略において重要である。最近、東アジアの在来スイートソルガムは、アフリカ（ソルガムの起源地）由来の系統とは異なる遺伝的背景を持つ可能性が報告された。そこで、本研究では、日本在来種（アマキビ）を加えた集団を構築し、ゲノムワイド関連解析による東アジア集団の高糖性遺伝子座を同定するとともに、東アジアの高糖性遺伝子の起源や伝播を解明することを目的とする。

  3. 酒米品種を特徴づける大粒化遺伝子の単離と遺伝的構成の解明

    Grant number：17J01082  2017.4 - 2019.3

    日本学術振興会  科学研究費助成事業  特別研究員奨励費

    岡田 聡史

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    Authorship：Principal investigator 

    Grant amount：\1700000 （ Direct Cost: \1700000 ）

    まず、酒米品種の「山田錦」の粒幅と粒重を制御している2つの主要な量的形質遺伝子座(Quantitative trait locus: QTL)、qGWh5とqGWh10の高精度マッピングによる原因遺伝子同定を行った。その結果、それぞれ約80kbと約96.7kbの領域まで狭めることができ、原因遺伝子候補としてそれぞれ3つと2つの遺伝子を抽出できた。本研究では原因遺伝子の単離には至らなかったが、これらQTLに強連鎖するDNAマーカーは開発でき、酒米育成時には、これらを用いて効率的なQTLの選抜が可能となった。また、ゲノムワイド関連解析によって粒長では1箇所、粒幅では5箇所にQTLが検出された。これらの内、染色体5で検出された粒幅のアソシエーションは上記のqGWh5と同座であった。さらに、粒幅を大きくするqGWh5の対立遺伝子頻度は在来品種で69.2%、育成酒米品種で74%、育成食用米品種で22%と大きな偏りが観察された。そのため、このQTLは酒米品種を特徴づけるQTLの一つであり、今後の酒米品種育成においても優先して選抜することが肝要であることが明らかとなった。
    加えて、4つの主要な粒大QTL、qGL4、qGWh5、qGWh10、qGL11をそれぞれ2つ集積した系統を用いた解析の結果、粒幅と粒厚ではqGL4、qGWh5、qGL11が同一の制御経路、qGWh10はそれ以外の経路で制御していると推察された。また、粒長ではqGL4とqGWh10、qGL11とqGWh10のそれぞれの組み合わせが関係する制御経路が予想された。このように、粒大は非常に複雑な制御経路によって支配されていた。最後に、4つのQTLを集積した系統は今年度の選抜によって1個体のみ作出できた。この個体の粒重は上記QTLを2つ集積した系統よりも大きくなく、推察された粒大制御経路の複雑さを反映しているものと示唆された。

To the head of KAKENHI (Grants-in-Aid for Scientific Research).▲