Performance information

• Ethylene promotes SMAX1 accumulation to inhibit arbuscular mycorrhiza symbiosis.　　　　　　　　　　　　　　　
  Debatosh Das; Kartikye Varshney; Satoshi Ogawa; Salar Torabi; Regine Hüttl; David C Nelson; Caroline Gutjahr
  Nature Communications, Volume：16, Number：1, First page：2025, Last page：2025, Feb. 2025, [Reviewed], ［International magazine］
  Most land plants engage in arbuscular mycorrhiza (AM) symbiosis with Glomeromycotina fungi for better access to mineral nutrients. The plant hormone ethylene suppresses AM development, but a molecular explanation for this phenomenon is lacking. Here we show that ethylene inhibits the expression of many genes required for AM formation in Lotus japonicus. These genes include strigolactone biosynthesis genes, which are needed for fungal activation, and Common Symbiosis genes, which are required for fungal entry into the root. Application of strigolactone analogs and ectopic expression of the Common Symbiosis gene Calcium Calmodulin-dependent Kinase (CCaMK) counteracts the effect of ethylene. Therefore, ethylene likely inhibits AM development by suppressing expression of these genes rather than by inducing defense responses. These same genes are regulated by SUPPRESSOR OF MAX2 1 (SMAX1), a transcriptional repressor that is proteolyzed during karrikin signaling. SMAX1 is required for suppression of AM by ethylene, and SMAX1 abundance in nuclei increases after ethylene application. We conclude that ethylene suppresses AM by promoting accumulation of SMAX1. SMAX1 emerges as a signaling hub that integrates karrikin and ethylene signaling, thereby orchestrating development of a major plant symbiosis with a plant's physiological state.
  English, Scientific journal
  DOI：https://doi.org/10.1038/s41467-025-57222-w
  DOI ID：10.1038/s41467-025-57222-w, PubMed ID：40016206, 共同研究・競争的資金等ID：35768353
• Dominant-negative KAI2d paralogs putatively attenuate strigolactone responses in root parasitic plants
  Alexandra R.F White; Annalise Kane; Satoshi Ogawa; Ken Shirasu; David C Nelson
  Plant And Cell Physiology, Sep. 2024, [Reviewed]
  ABSTRACT
  
  Many root parasitic plants in the Orobanchaceae use host-derived strigolactones as germination cues. This adaptation facilitates attachment to a host and is particularly important for the success of obligate parasitic weeds that cause substantial crop losses globally. Parasite seeds sense strigolactones through “divergent” KARRIKIN INSENSITIVE2 (KAI2d)/HYPOSENSITIVE TO LIGHT (HTL) α/β-hydrolases that have undergone substantial duplication and diversification in Orobanchaceae genomes. After germination, chemotropic growth of parasite roots toward a strigolactone source also occurs in some species. We investigated which of the seven KAI2d genes found in a facultative hemiparasite, Phtheirospermum japonicum, may enable chemotropic responses to strigolactones. To do so, we developed a triple mutant Nbd14a,b kai2i line of Nicotiana benthamiana in which strigolactone-induced degradation of SMAX1, an immediate downstream target of KAI2 signaling, is disrupted. In combination with a transiently expressed, ratiometric reporter of SMAX1 protein abundance, this mutant forms a system for the functional analysis of parasite KAI2d proteins in a plant cellular context. Using this system, we unexpectedly found three PjKAI2d proteins that do not trigger SMAX1 degradation in the presence of strigolactones. Instead, these PjKAI2d inhibit the perception of low strigolactone concentrations by strigolactone-responsive PjKAI2d in a dominant-negative manner that depends upon an active catalytic triad. Similar dominant-negative KAI2d paralogs were identified in an obligate hemiparasitic weed, Striga hermonthica. These proteins suggest a mechanism for attenuating strigolactone signaling in parasites, which might be used to enhance the perception of shallow strigolactone gradients during root growth toward a host or to restrict germination responses to specific strigolactones.
  Oxford University Press (OUP), Scientific journal
  DOI：https://doi.org/10.1093/pcp/pcae106
  DOI ID：10.1093/pcp/pcae106, ISSN：0032-0781, eISSN：1471-9053, 共同研究・競争的資金等ID：35768353
• Strigolactones in Rhizosphere Communication: Multiple Molecules With Diverse Functions
  Yee Jia Kee; Satoshi Ogawa; Yasunori Ichihashi; Ken Shirasu; Satoko Yoshida
  Plant And Cell Physiology, Jun. 2023, [Reviewed], [Lead]
  Abstract
  
  Strigolactones (SLs) are root-secreted small molecules that influence organisms living in the rhizosphere. While SLs are known as germination stimulants for root parasitic plants and as hyphal branching factors for arbuscular mycorrhizal fungi, recent studies have also identified them as chemoattractants for parasitic plants, sensors of neighboring plants and key players in shaping the microbiome community. Furthermore, the discovery of structurally diverged SLs, including so-called canonical and non-canonical SLs in various plant species, raises the question of whether the same SLs are responsible for their diverse functions ‘in planta’ and the rhizosphere or whether different molecules play different roles. Emerging evidence supports the latter, with each SL exhibiting different activities as rhizosphere signals and plant hormones. The evolution of D14/KAI2 receptors has enabled the perception of various SLs or SL-like compounds to control downstream signaling, highlighting the complex interplay between plants and their rhizosphere environment. This review summarizes the recent advances in our understanding of the diverse functions of SLs in the rhizosphere.
  Oxford University Press (OUP), English, Scientific journal
  DOI：https://doi.org/10.1093/pcp/pcad055
  DOI ID：10.1093/pcp/pcad055, ISSN：0032-0781, eISSN：1471-9053, 共同研究・競争的資金等ID：35768353
• Strigol induces germination of the facultative parasitic plant Phtheirospermum japonicum in the absence of nitrate ions.　　　　　　　　　　　　　　　
  Satoshi Ogawa; Ken Shirasu
  Plant Signaling & Behavior, Volume：17, Number：1, First page：2114647, Dec. 2022, [Reviewed], [Lead, Corresponding], ［International magazine］
  Root parasitic plants in the family Orobanchaceae, such as Striga and Orobanche spp., infest major crops worldwide, leading to a multibillion-dollar loss annually. Host-derived strigolactones (SLs), recognized by a group of α/β hydrolase receptors (KAI2d) in these parasites, are important determinants for germinating root parasitic plants near the roots of host plants. Phtheirospermum japonicum, a facultative hemiparasitic Orobanchaceae plant, can germinate and grow in the presence or absence of the host and can also exhibit root chemotropism to host-derived SLs that are perceived via KAI2d. However, the importance of SLs in P. japonicum germination remains unclear. In this study, we found that germination of P. japonicum was suppressed in the absence of nitrate ions and that germination of P. japonicum was promoted by exogenous strigol, an SL, under such conditions. We propose a model in which P. japonicum may select either independent living or parasitism in response to ambient nitrogen conditions and host presence.
  English, Scientific journal
  DOI：https://doi.org/10.1080/15592324.2022.2114647
  DOI ID：10.1080/15592324.2022.2114647, PubMed ID：35993137, 共同研究・競争的資金等ID：35768353
• Strigolactones are chemoattractants for host tropism in Orobanchaceae parasitic plants.　　　　　　　　　　　　　　　
  Satoshi Ogawa; Songkui Cui; Alexandra R F White; David C Nelson; Satoko Yoshida; Ken Shirasu
  Nature Communications, Volume：13, Number：1, First page：4653, Last page：4653, Aug. 2022, [Reviewed], [Lead], ［International magazine］
  Parasitic plants are worldwide threats that damage major agricultural crops. To initiate infection, parasitic plants have developed the ability to locate hosts and grow towards them. This ability, called host tropism, is critical for parasite survival, but its underlying mechanism remains mostly unresolved. To characterise host tropism, we used the model facultative root parasite Phtheirospermum japonicum, a member of the Orobanchaceae. Here, we show that strigolactones (SLs) function as host-derived chemoattractants. Chemotropism to SLs is also found in Striga hermonthica, a parasitic member of the Orobanchaceae, but not in non-parasites. Intriguingly, chemotropism to SLs in P. japonicum is attenuated in ammonium ion-rich conditions, where SLs are perceived, but the resulting asymmetrical accumulation of the auxin transporter PIN2 is diminished. P. japonicum encodes putative receptors that sense exogenous SLs, whereas expression of a dominant-negative form reduces its chemotropic ability. We propose a function for SLs as navigators for parasite roots.
  English, Scientific journal
  DOI：https://doi.org/10.1038/s41467-022-32314-z
  DOI ID：10.1038/s41467-022-32314-z, PubMed ID：35970835, PubMed Central ID：PMC9378612, 共同研究・競争的資金等ID：35768353
• Subtilase activity in intrusive cells mediates haustorium maturation in parasitic plants　　　　　　　　　　　　　　　
  Satoshi Ogawa; Takanori Wakatake; Thomas Spallek; Juliane K. Ishida; Ryosuke Sano; Tetsuya Kurata; Taku Demura; Satoko Yoshida; Yasunori Ichihashi; Andreas Schaller; Ken Shirasu
  Plant Physiology, Volume：185, Number：4, First page：1381, Last page：1394, Dec. 2020, [Reviewed], [Lead], ［International magazine］
  Parasitic plants that infect crops are devastating to agriculture throughout the world. They develop a unique inducible organ called the haustorium, which connects the vascular systems of the parasite and host to establish a flow of water and nutrients. Upon contact with the host, the haustorial epidermal cells at the interface with the host differentiate into specific cells called intrusive cells that grow endophytically towards the host vasculature. Then, some of the intrusive cells re-differentiate to form a xylem bridge that connects the vasculatures of the parasite and host. Despite the prominent role of intrusive cells in host infection, the molecular mechanisms mediating parasitism in the intrusive cells are unknown. In this study, we investigated differential gene expression in the intrusive cells of the facultative parasite Phtheirospermum japonicum in the family Orobanchaceae by RNA-Sequencing of laser-microdissected haustoria. We then used promoter analyses to identify genes that are specifically induced in intrusive cells, and used promoter fusions with genes encoding fluorescent proteins to develop intrusive cell-specific markers. Four of the intrusive cell-specific genes encode subtilisin-like serine proteases (SBTs), whose biological functions in parasitic plants are unknown. Expression of an SBT inhibitor in the intrusive cells inhibited their development, inhibited the development of the xylem bridge, and reduced auxin response levels near the site where the xylem bridge normally develops. Therefore, we propose that subtilase activity plays an important role in haustorium development in this parasitic plant.
  
  Tissue-specific analysis showed that the subtilases specifically expressed in intrusive cells regulate auxin-mediated host-parasite connections in the parasitic plant Phtheirospermum japonicum.
  
  
  Cold Spring Harbor Laboratory, English, Scientific journal
  DOI：https://doi.org/10.1101/2020.03.30.015149
  DOI ID：10.1101/2020.03.30.015149, PubMed ID：33793894, PubMed Central ID：PMC8133603
• Host-parasite tissue adhesion by a secreted type of β-1,4-glucanase in the parasitic plant Phtheirospermum japonicum　　　　　　　　　　　　　　　
  Ken-ichi Kurotani; Takanori Wakatake; Yasunori Ichihashi; Koji Okayasu; Yu Sawai; Satoshi Ogawa; Songkui Cui; Takamasa Suzuki; Ken Shirasu; Michitaka Notaguchi
  Communications Biology, Volume：3, Number：1, Dec. 2020, [Reviewed]
  Tissue adhesion between plant species occurs both naturally and artificially. Parasitic plants establish intimate relationship with host plants by adhering tissues at roots or stems. Plant grafting, on the other hand, is a widely used technique in agriculture to adhere tissues of two stems. Here we found that the model Orobanchaceae parasitic plant Phtheirospermum japonicum can be grafted on to interfamily species. To understand molecular basis of tissue adhesion between distant plant species, we conducted comparative transcriptome analyses on both infection and grafting by P. japonicum on Arabidopsis. Despite different organs, we identified the shared gene expression profile, where cell proliferation- and cell wall modification-related genes are up-regulated. Among genes commonly induced in tissue adhesion between distant species, we showed a gene encoding a secreted type of beta -1,4-glucanase plays an important role for plant parasitism. Our data provide insights into the molecular commonality between parasitism and grafting in plants. Ken-ichi Kurotani, Takanori Wakatake et al. study tissue adhesion in plants. They found that the model Orobanchaceae parasitic plant Phtheirospermum japonicum can be grafted on to interfamily species. Using transcriptome profiling, the identify genes involved in tissue adhesion between distant species and demonstrate that beta -1,4-glucanase plays an important role in plant parasitism.
  Springer Science and Business Media LLC, English, Scientific journal
  DOI：https://doi.org/10.1038/s42003-020-01143-5
  DOI ID：10.1038/s42003-020-01143-5, eISSN：2399-3642, Web of Science ID：WOS:000559022600005
• Auxin transport network underlies xylem bridge formation between the hemi-parasitic plant Phtheirospermum japonicum and host Arabidopsis.　　　　　　　　　　　　　　　
  Takanori Wakatake; Satoshi Ogawa; Satoko Yoshida; Ken Shirasu
  Development (Cambridge, England), Volume：147, Number：14, Jun. 2020, [Reviewed], ［International magazine］
  Parasitic plants form vascular connections to host plants for efficient material transport. The haustorium is the responsible organ for host invasion and subsequent vascular connection. After invasion of host tissues, vascular meristem-like cells emerge in the central region of the haustorium, differentiate into tracheary elements, and establish a connection, known as a xylem bridge, between parasite and host xylem systems. Despite the importance of this parasitic connection, the regulatory mechanisms of xylem bridge formation are unknown. Here we show the role of auxin and auxin transporters during the process of xylem bridge formation using an Orobanchaceae hemiparasitic plant, Phtheirospermum japonicum The auxin response marker DR5 has a similar expression pattern to tracheary element differentiation genes in haustoria. Auxin transport inhibitors alter tracheary element differentiation in haustoria, but biosynthesis inhibitors do not, demonstrating the importance of auxin transport during xylem bridge formation. The expression patterns and subcellular localization of PIN family auxin efflux carriers and AUX1/LAX influx carriers correlate with DR5 expression patterns. The cooperative action of auxin transporters is therefore responsible for controlling xylem vessel connections between parasite and host.
  English, Scientific journal
  DOI：https://doi.org/10.1242/dev.187781
  DOI ID：10.1242/dev.187781, PubMed ID：32586973
• OsMYC2 mediates numerous defence-related transcriptional changes via jasmonic acid signalling in rice　　　　　　　　　　　　　　　
  Satoshi Ogawa; Ryouka Kawahara-Miki; Koji Miyamoto; Hisakazu Yamane; Hideaki Nojiri; Yoshimasa Tsujii; Kazunori Okada
  BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, Volume：486, Number：3, First page：796, Last page：803, May 2017, [Reviewed], [Lead]
  Jasmonic acid (JA) plays central roles in various events in plants, especially defence against pathogens and insects. The basic helix-loop-helix (bHLH) transcription factor MYC2 has attracted attention as a master regulator of JA signalling in dicotyledonous plants. However, how MYC2 functions in monocotyledonous plants, including agriculturally important crops such as cultivated rice, has been poorly understood. To elucidate the comprehensive effects of rice MYC2 (OsMYC2) on the JA-inducible transcriptional modifications, we performed RNA-sequencing by using OsMYC2-knockdown plants (osmyc2RNAi). In osmyc2RNAi, JA-inducible expression of many defence-related genes, for example chitinases and proteinase inhibitors, was compromised. Decrease in JA-dependent activation of the biosynthetic pathways of specialised metabolites, especially defence compounds, was also evident in the osmyc2RNAi line. Furthermore, a substantial change was noted in the expression of distinct types of transcription factors, such as MYB-type factors, likely depicting the importance of OsMYC2 in not only defence responses but also other morphogenetic events. Our findings provide fundamental information to understand the overall functions of MYC2 in JA signalling in monocotyledonous plants, which might yield agricultural benefits. (C) 2017 Elsevier Inc. All rights reserved.
  ACADEMIC PRESS INC ELSEVIER SCIENCE, English, Scientific journal
  DOI：https://doi.org/10.1016/j.bbrc.2017.03.125
  DOI ID：10.1016/j.bbrc.2017.03.125, ISSN：0006-291X, eISSN：1090-2104, Web of Science ID：WOS:000399966700030
• OsMYC2, an essential factor for JA-inductive sakuranetin production in rice, interacts with MYC2-like proteins that enhance its transactivation ability　　　　　　　　　　　　　　　
  Satoshi Ogawa; Koji Miyamoto; Keiichirou Nemoto; Tatsuya Sawasaki; Hisakazu Yamane; Hideaki Nojiri; Kazunori Okada
  SCIENTIFIC REPORTS, Volume：7, Jan. 2017, [Reviewed], [Lead]
  Biosynthesis of sakuranetin, a flavonoid anti-fungal phytoalexin that occurs in rice, is highly dependent on jasmonic acid (JA) signalling and induced by a variety of environmental stimuli. We previously identified OsNOMT, which encodes naringenin 7-O-methyltransferase (NOMT); NOMT is a key enzyme for sakuranetin production. Although OsNOMT expression is induced by JA treatment, the regulation mechanism that activates the biosynthetic pathway of sakuranetin has not yet been elucidated. In this study, we show that JA-inducible basic helix-loop-helix transcriptional factor OsMYC2 drastically enhances the activity of the OsNOMT promoter and is essential for JA-inducible sakuranetin production. In addition, we identified 2 collaborators of OsMYC2, OsMYC2-like protein 1 and 2 (OsMYL1 and OsMYL2) that further activated the OsNOMT promoter in synergy with OsMYC2. Physical interaction of OsMYC2 with OsMYL1 and OsMYL2 further supported the idea that these interactions lead to the enhancement of the transactivation activity of OsMYC2. Our results indicate that JA signalling via OsMYC2 is reinforced by OsMYL1 and OsMYL2, resulting in the inductive production of sakuranetin during defence responses in rice.
  NATURE PUBLISHING GROUP, English, Scientific journal
  DOI：https://doi.org/10.1038/srep40175
  DOI ID：10.1038/srep40175, ISSN：2045-2322, Web of Science ID：WOS:000391759200001
• Overexpression of Phosphomimic Mutated OsWRKY53 Leads to Enhanced Blast Resistance in Rice　　　　　　　　　　　　　　　
  Tetsuya Chujo; Koji Miyamoto; Satoshi Ogawa; Yuka Masuda; Takafumi Shimizu; Mitsuko Kishi-Kaboshi; Akira Takahashi; Yoko Nishizawa; Eiichi Minami; Hideaki Nojiri; Hisakazu Yamane; Kazunori Okada
  PLOS ONE, Volume：9, Number：6, Jun. 2014, [Reviewed]
  WRKY transcription factors and mitogen-activated protein kinase (MAPK) cascades have been shown to play pivotal roles in the regulation of plant defense responses. We previously reported that OsWRKY53-overexpressing rice plants showed enhanced resistance to the rice blast fungus. In this study, we identified OsWRKY53 as a substrate of OsMPK3/OsMPK6, components of a fungal PAMP-responsive MAPK cascade in rice, and analyzed the effect of OsWRKY53 phosphorylation on the regulation of basal defense responses to a virulence race of rice blast fungus Magnaporthe oryzae strain Ina86-137. An in vitro phosphorylation assay revealed that the OsMPK3/OsMPK6 activated by OsMKK4 phosphorylated OsWRKY53 recombinant protein at its multiple clustered serine-proline residues (SP cluster). When OsWRKY53 was coexpressed with a constitutively active mutant of OsMKK4 in a transient reporter gene assay, the enhanced transactivation activity of OsWRKY53 was found to be dependent on phosphorylation of the SP cluster. Transgenic rice plants overexpressing a phospho-mimic mutant of OsWRKY53 (OsWRKY53SD) showed further-enhanced disease resistance to the blast fungus compared to native OsWRKY53-overexpressing rice plants, and a substantial number of defense-related genes, including pathogenesis-related protein genes, were more upregulated in the OsWRKY53SD-overexpressing plants compared to the OsWRKY53-overexpressing plants. These results strongly suggest that the OsMKK4-OsMPK3/OsMPK6 cascade regulates transactivation activity of OsWRKY53, and overexpression of the phospho-mimic mutant of OsWRKY53 results in a major change to the rice transcriptome at steady state that leads to activation of a defense response against the blast fungus in rice plants.
  PUBLIC LIBRARY SCIENCE, English, Scientific journal
  DOI：https://doi.org/10.1371/journal.pone.0098737
  DOI ID：10.1371/journal.pone.0098737, ISSN：1932-6203, Web of Science ID：WOS:000336911400087

• Identification of key genetic player candidates in the biosynthesis of a putative plant hormone in Arabidopsis thaliana　　　　　　　　　　　　　　　
  Satoshi Ogawa; Kiyoshi Mashiguchi; Shinjiro Yamaguchi; David C. Nelson
  The 66th Annual Meeting of the Japanese Society of Plant Physiologists, First page：2P107, 15 Mar. 2025, [Lead]
  English, Meeting report
  共同研究・競争的資金等ID：47156465
• Selection and analysis of candidate biosynthetic genes for an unknown plant hormone that signals through KAI2　　　　　　　　　　　　　　　
  Qianfan Xu; Satoshi Ogawa; Kiyoshi Mashiguchi; Shinjiro Yamaguchi; David C. Nelson
  The 66th Annual Meeting of the Japanese Society of Plant Physiologists, First page：2P108, 15 Mar. 2025
  English, Meeting report
  共同研究・競争的資金等ID：47156465
• SMAX1 is a Signaling Hub That Integrates Karrikin- and Ethylene-mediated Regulation of Seedling Photomorphogenesis in Arabidopsis thaliana　　　　　　　　　　　　　　　
  Satoshi Ogawa; Caroline Gutjahr; David C. Nelson
  The 65th Annual Meeting of the Japanese Society of Plant Physiologists, First page：2P50, 18 Mar. 2024, [Lead]
  English, Meeting report
  共同研究・競争的資金等ID：35768353
• Interaction of phytohormone signaling pathways regulating root colonization by arbuscular mycorrhizal fungi　　　　　　　　　　　　　　　
  Debatosh Das; Kartikye Varshney; Satoshi Ogawa; Salar Torabi; Regina Hüttl; David Nelson; Caroline Gutjahr
  The 24th International Conference on Plant Growth Substances, Jul. 2023, [Invited]
  English
  共同研究・競争的資金等ID：35768353
• Molecular mechanisms of host tropism in Orobanchaceae parasitic plants　　　　　　　　　　　　　　　
  Satoshi Ogawa; Songkui Cui; Satoko Yoshida; Ken Shirasu
  日本植物生理学会年会(Web), Volume：63rd, Mar. 2022, [Lead]
  共同研究・競争的資金等ID：35768353
• Role of the subtilases in the haustorial formation in the parasitic plant Phtheirospermum japonicum　　　　　　　　　　　　　　　
  Satoshi Ogawa; Takanori Wakatake; Thomas SPALLEK; Juliane K. Ishida; Ryosuke Sano; Tetsuya Kurata; Taku Demura; Satoko Yoshida; Yasunori Ichihashi; Andreas Schaller; Ken Shirasu
  Volume：62nd, 2021, [Lead]
  J-Global ID：202102283398226677
• Parasitism-inducible proteases and their putative peptide hormone in the haustorium of the parasitic plant Phtheirospermum japonicum　　　　　　　　　　　　　　　
  Satoshi Ogawa; Takanori Wakatake; Juliane K. Ishida; Satoko Yoshida; Thomas Spallek; Yasunori Ichihashi; Ken Shirasu
  The 23rd International Conference on Plant Growth Substances, Jun. 2019, [Reviewed], [Lead]
• Expression dynamics of subtilases in the haustorium of the parasitic plant Phtheirospermum japonicum　　　　　　　　　　　　　　　
  OGAWA Satoshi; WAKATAKE Takanori; WAKATAKE Takanori; ISHIDA Juliane K.; ISHIDA Juliane K.; YOSHIDA Satoko; YOSHIDA Satoko; ICHIHASHI Yasunori; ICHIHASHI Yasunori; SHIRASU Ken; SHIRASU Ken
  日本植物生理学会年会(Web), Volume：60th, 2019, [Lead]
  J-Global ID：201902282247993674
• Classification and expression dynamics of subtilases in the parasitic plant Phtheirospermum japonicum　　　　　　　　　　　　　　　
  OGAWA Satoshi; WAKATAKE Takanori; YOSHIDA Satoko; YOSHIDA Satoko; ICHIHASHI Yasunori; ICHIHASHI Yasunori; SHIRASU Ken
  日本植物生理学会年会(Web), Volume：59th, 2018, [Lead]
  J-Global ID：201802249331828856
• イネのフラボノイド化合物サクラネチンの生産誘導におけるジャスモン酸とフォスファチジン酸の協調作用　　　　　　　　　　　　　　　
  石田明大; 小川哲史; 西澤洋子; 南栄一; 山根久和; 有村源一郎; 野尻秀昭; 岡田憲典
  Volume：2017, 2017
  ISSN：2186-7976, J-Global ID：201702250042792762
• イネのサクラネチン生合成酵素遺伝子を制御する転写因子の探索　　　　　　　　　　　　　　　
  小川哲史; 宮本皓司; 山根久和; 野尻秀昭; 岡田憲典
  Volume：56th, 2015, [Lead]
  J-Global ID：201502298418204255
• イネのサクラネチン生合成酵素遺伝子OsNOMTの転写を制御する因子の探索　　　　　　　　　　　　　　　
  小川哲史; 宮本皓司; 山根久和; 野尻秀昭; 岡田憲典
  Volume：2015, 2015, [Lead]
  ISSN：2186-7976, J-Global ID：201502255531516483
• イネのフラボノイド型ファイトアレキシン生合成酵素遺伝子の発現制御機構の解析　　　　　　　　　　　　　　　
  小川哲史; 宮本皓司; 山根久和; 野尻秀昭; 岡田憲典
  Number：Supplement, First page：56, Oct. 2014, [Lead]
  Japanese, Meeting report
  ISSN：1346-5406, J-Global ID：201402228794551599
• Biological roles of sakuranetin, a flavonoid specialized metabolite inductively produced in rice　　　　　　　　　　　　　　　
  Satoshi Ogawa; Chie Yoshiga; Gen-ichiro Arimura; Takafumi Shimizu; Koji Miyamoto; Koichi Hamada; Yoko Nishizawa; Eiichi Minami; Hisakazu Yamane; Hideaki Nojiri; Kazunori Okada
  The 41st Annual Meeting of the Plant Growth Regulation Society of America, First page：8, Jul. 2014, [Reviewed], [Lead]
  English, Meeting report
• イネのサクラネチン生合成酵素遺伝子OsNOMTのジャスモン酸依存的な発現機構の解析　　　　　　　　　　　　　　　
  小川哲史; 野尻秀昭; 岡田憲典
  First page：PF154 (0571), Mar. 2014, [Lead]
  Japanese, Meeting report
  J-Global ID：201402221595190558
• イネにおけるサクラネチン生合成酵素遺伝子のジャスモン酸依存的な発現制御機構の解明　　　　　　　　　　　　　　　
  小川哲史; 清水崇史; 山根久和; 山根久和; 野尻秀昭; 岡田憲典
  Volume：2014, First page：2C04a10, Mar. 2014, [Lead]
  Japanese, Meeting report
  ISSN：2186-7976, J-Global ID：201402232787456731
• イネの病害抵抗性を制御する転写因子OsWRKY53の標的遺伝子の同定　　　　　　　　　　　　　　　
  小川哲史; 宮本皓司; 清水崇史; 増田優花; 中条哲也; 西澤洋子; 南栄一; 山根久和; 野尻秀昭; 岡田憲典
  Volume：2013, First page：2A44p04, Mar. 2013, [Lead]
  Japanese, Meeting report
  ISSN：2186-7976, J-Global ID：201302296458587141
• イネの病害抵抗性を制御する転写因子OsWRKY53の相互作用因子の探索と機能解析　　　　　　　　　　　　　　　
  小川哲史; 宮本皓司; 清水崇史; 増田優花; 中条哲也; 西澤洋子; 南栄一; 野尻秀昭; 山根久和; 岡田憲典
  Volume：47, Number：Supplement, First page：P92, Oct. 2012, [Lead]
  Japanese, Meeting report
  ISSN：1346-5406, J-Global ID：201202292509203316
• Molecular mechanisms for disease resistance in rice that is regulated by the transcriptional activator OsWRKY53　　　　　　　　　　　　　　　
  Satoshi Ogawa; Koji Miyamoto; Takafumi Shimizu; Yuka Masuda; Tetsuya Chujo; Yoko Nishizawa; Eiichi Minami; Hideaki Nojiri; Hisakazu Yamane; Kazunori Okada
  XV International Congress on Molecular Plant-Microbe Interactions, First page：PS13-485, Jul. 2012, [Reviewed], [Lead]
  English, Meeting report
• イネの病害抵抗性を制御する転写因子OsWRKY53の機能発現機構の解析　　　　　　　　　　　　　　　
  小川哲史; 清水崇史; 宮本皓司; 西澤洋子; 南栄一; 増田優花; 中条哲也; 岡田憲典; 野尻秀昭; 山根久和
  Volume：2012, First page：3A30a01, Mar. 2012, [Lead]
  Japanese, Meeting report
  ISSN：2186-7976, J-Global ID：201302273439890283
• イネの病害抵抗性に関与する転写因子OsWRKY53の翻訳後修飾機構の解明　　　　　　　　　　　　　　　
  増田優花; 小川哲史; 中条哲也; 宮本皓司; 岡田憲典; 加星光子; 高橋章; 西澤洋子; 南栄一; 野尻秀昭; 山根久和
  Volume：2011, First page：3A35p14, Mar. 2011
  J-Global ID：201102222746394201

• Regulation of Plant Growth & Development 58 (2)　　　　　　　　　　　　　　　
  Satoshi Ogawa; Ken Shirasu, [Contributor], Neofunctionalization of strigolactones – chemoattractants for host tropism in Orobanchaceae parasitic plants
  The Japanese Society for Chemical Regulation of Plants, Dec. 2023
  共同研究・競争的資金等ID：35768353
• 月刊アグリバイオ 7 (11)　　　　　　　　　　　　　　　
  小川哲史, [Contributor]
  Sep. 2023
• 生物の科学 遺伝 74(5)　　　　　　　　　　　　　　　
  小川哲史; 白須賢, [Contributor]
  Sep. 2020

• Be ready to grab a chance at any time!　　　　　　　　　　　　　　　
  Satoshi Ogawa
  The 42nd Meeting of the Japanese Society for Young Plant Physiologists, Mar. 2025, [Invited]
  Mar. 2025 - Mar. 2025, Japanese, Public discourse
  共同研究・競争的資金等ID：47156465
• Low molecular compounds regulating plant growth - studies in Japan and the U.S.　　　　　　　　　　　　　　　
  Satoshi Ogawa
  The 6th Meeting of Associates of Young Researchers of Chemical Regulation of Plants, Sep. 2024, [Invited]
  Sep. 2024 - Sep. 2024, Japanese, Public discourse
  共同研究・競争的資金等ID：47156465
• How do Orobanchaceae parasitic plants grow their roots toward host roots?　　　　　　　　　　　　　　　
  Satoshi Ogawa
  Seminar at Tohoku University, Nov. 2023, [Invited]
  English, Public discourse
  共同研究・競争的資金等ID：35768353
• Molecular basis for host tropism in Orobanchaceae parasitic plants　　　　　　　　　　　　　　　
  Satoshi Ogawa
  KU-ICR Seminar, Nov. 2023, [Invited]
  English, Public discourse
  共同研究・競争的資金等ID：35768353
• ハマウツボ科寄生植物における宿主への接近メカニズム　　　　　　　　　　　　　　　
  小川 哲史
  Apr. 2023, [Invited]
  Japanese, Public discourse
  共同研究・競争的資金等ID：35768353
• Molecular basis underlying host tropism in Orobanchaceae parasitic plants　　　　　　　　　　　　　　　
  Satoshi Ogawa
  ITbM-GTR Seminar, Apr. 2023, [Invited]
  English, Public discourse
  共同研究・競争的資金等ID：35768353
• Orobanchaceae parasitic plants use strigolactones as chemoattractants for host tropism　　　　　　　　　　　　　　　
  Satoshi Ogawa
  The International Parasitic Plant Society Online Seminar Series #11, Apr. 2022, [Invited]
  English, Public discourse

• Jun. 2019 - Present, International Plant Growth Substances Association
• Jan. 2014 - Present, THE JAPANESE SOCIETY OF PLANT PHYSIOLOGISTS
• Oct. 2012 - Present, THE JAPANESE SOCIETY FOR CHEMICAL REGULATION OF PLANTS
• Dec. 2010 - Present, JAPAN SOCIETY FOR BIOSCIENCE, BIOTECHNOLOGY, AND AGROCHEMISTRY
• Apr. 2022 - Mar. 2023, International Parasitic Plant Society

• KAI2 ligandシグナルが関与する植物ホルモン間クロストークの解明　　　　　　　　　　　　　　　
  Apr. 2025 - Mar. 2028
  Satoshi Ogawa, Principal investigator
  Grant amount(Total)：6370000, Direct funding：4900000, Indirect funding：1470000
  Grant number：25K09038
• Identification of biosynthetic genes for a novel signaling molecule that modulates plant development　　　　　　　　　　　　　　　
  Institute for Chemical Research, Kyoto University, International Collaborative Research Program of Institute for Chemical Research, International Collaborative Research, Apr. 2025 - Mar. 2026
  David C. Nelson; Shinjiro Yamaguchi; Qianfan Xu; Kiyoshi Mashiguchi; Satoshi Ogawa, Kyoto University, Coinvestigator
  Grant number：2025-107
• Identification of biosynthetic genes for a novel signaling molecule that modulates plant development　　　　　　　　　　　　　　　
  Institute for Chemical Research, Kyoto University, International Collaborative Research Program of Institute for Chemical Research, International Collaborative Research, Apr. 2024 - Mar. 2025
  David Nelson; Shinjiro Yamaguchi; Satoshi Ogawa; Kiyoshi Mashiguchi; Qianfan Xu, Kyoto University, Coinvestigator
  Grant number：2024-102
  MISC ID：49430771, 講演・口頭発表等ID：49430596
• 寄生植物-宿主間と植物-菌根菌間における他者認識の分子機構　　　　　　　　　　　　　　　
  Apr. 2021 - Mar. 2024
  Principal investigator
  Grant amount(Total)：4810000, Direct funding：3700000, Indirect funding：1110000
  Grant number：21J00718
  論文ID：49275740, MISC ID：45863776, 書籍等出版物ID：44529284, 講演・口頭発表等ID：44143625, 受賞ID：41802386