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川出 健介(カワデ ケンスケ)
理工学研究科 生命科学部門 | 助教 |
理学部 生体制御学科 |
研究者情報
■ 学位■ 研究キーワード
■ 研究分野
■ 経歴
- 2023年04月 - 現在, 埼玉大学大学院理工学研究科, 助教
- 2014年04月 - 現在, 理化学研究所, 代謝システム研究チーム, 客員研究員
- 2025年04月 - 2026年03月, 立教大学 理学部生命理学科, 兼任講師
- 2022年05月 - 2024年03月, 豊橋技術科学大学 大学院工学研究科 応用化学・生命工学系, 非常勤講師
- 2020年03月 - 2023年03月, 基礎生物学研究所, 共生システム研究部門, 助教
- 2015年04月 - 2023年03月, 総合研究大学院大学, 准教授
- 2018年04月 - 2020年02月, 生命創成探究センター, 植物発生生理研究グループ, 特任准教授
- 2015年03月 - 2020年02月, 基礎生物学研究所, 植物発生生理研究室, 特任准教授
- 2015年03月 - 2018年03月, 岡崎統合バイオサイエンスセンター, 植物発生生理研究部門, 特任准教授
- 2014年04月 - 2015年02月, 北海道大学, 大学院理学研究院, 日本学術振興会特別研究員(PD)
- 2011年04月 - 2014年03月, 理化学研究所, 代謝システム研究チーム, 基礎科学特別研究員
- 2024年01月 - 現在
Journal of Plant Research, Editorial Board Member - 2015年04月 - 現在
文部科学省 科学技術・学術政策研究所, 専門調査員 - 2022年08月 - 2025年07月
7th International Conference on Plant Vascular Biology 2025, Local Organizing Committee - 2022年07月 - 2023年06月
日本学術振興会, 国際事業委員会書面審査員・書面評価員 - 2022年07月 - 2023年06月
日本学術振興会, 卓越研究員候補者選考委員会 書面審査員 - 2022年07月 - 2023年06月
日本学術振興会, 特別研究員等審査会 専門委員
業績情報
■ 論文- Loss-of-functional mutation in ANGUSTIFOLIA3 causes leucine hypersensitivity and hypoxia response during Arabidopsis thaliana seedling growth
Kensuke Kawade; Mamoru Nozaki; Gorou Horiguchi; Tomoko Mori; Katsushi Yamaguchi; Mami Okamoto; Hiromitsu Tabeta; Shuji Shigenobu; Masami Yokota Hirai; Hirokazu Tsukaya
Metabolomics, 2025年03月, [査読有り], [筆頭著者, 責任著者]
研究論文(学術雑誌)
DOI:https://doi.org/10.1007/s11306-025-02249-9
DOI ID:10.1007/s11306-025-02249-9, ORCID:181412372 - Functional conservation and divergence of Arabidopsis VENOSA4 and human SAMHD1 in DNA repair
Raquel Sarmiento-Mañús; Sara Fontcuberta-Cervera; Kensuke Kawade; Akira Oikawa; Hirokazu Tsukaya; Víctor Quesada; José Luis Micol; María Rosa Ponce
Heliyon, 2024年05月, [査読有り]
DOI:https://doi.org/10.1101/2024.05.27.596045
DOI ID:10.1101/2024.05.27.596045, ORCID:160687091 - Control of root nodule formation ensures sufficient shoot water availability in Lotus japonicus
Kensuke Kawade; Daisuke Sugiura; Akira Oikawa; Masayoshi Kawaguchi
Plant Physiology, 2024年03月, [査読有り], [筆頭著者, 責任著者]
Abstract
Leguminous plants provide carbon to symbiotic rhizobia in root nodules to fuel the energy-consuming process of nitrogen fixation. The carbon investment pattern from the acquired sources is crucial for shaping the growth regime of the host plants. The autoregulation of nodulation (AON) signaling pathway tightly regulates the number of nodules that form. AON disruption leads to excessive nodule formation and stunted shoot growth. However, the physiological role of AON in adjusting the carbon investment pattern is unknown. Here, we show that AON plays an important role in sustaining shoot water availability, which is essential for promoting carbon investment in shoot growth in Lotus japonicus. We found that AON-defective mutants exhibit substantial accumulation of nonstructural carbohydrates, such as sucrose. Consistent with this metabolic signature, resilience against water-deficit stress was enhanced in the shoots of the AON-defective mutants. Furthermore, the water uptake ability was attenuated in the AON-defective mutants, likely due to the increased ratio of nodulation zone, which is covered with hydrophobic surfaces, on the roots. These results increase our physiological understanding of legume–rhizobia symbiosis by revealing a trade-off between root nodule formation and shoot water availability.
Oxford University Press (OUP), 研究論文(学術雑誌)
DOI:https://doi.org/10.1093/plphys/kiae126
DOI ID:10.1093/plphys/kiae126, ISSN:0032-0889, eISSN:1532-2548 - IMA peptides regulate root nodulation and nitrogen homeostasis by providing iron according to internal nitrogen status
Momoyo Ito; Yuri Tajima; Mari Ogawa-Ohnishi; Hanna Nishida; Shohei Nosaki; Momona Noda; Naoyuki Sotta; Kensuke Kawade; Takehiro Kamiya; Toru Fujiwara; Yoshikatsu Matsubayashi; Takuya Suzaki
Nature Communications, 巻:15, 号:1, 2024年01月, [査読有り]
Abstract
Legumes control root nodule symbiosis (RNS) in response to environmental nitrogen availability. Despite the recent understanding of the molecular basis of external nitrate-mediated control of RNS, it remains mostly elusive how plants regulate physiological processes depending on internal nitrogen status. In addition, iron (Fe) acts as an essential element that enables symbiotic nitrogen fixation; however, the mechanism of Fe accumulation in nodules is poorly understood. Here, we focus on the transcriptome in response to internal nitrogen status during RNS in Lotus japonicus and identify that IRON MAN (IMA) peptide genes are expressed during symbiotic nitrogen fixation. We show that LjIMA1 and LjIMA2 expressed in the shoot and root play systemic and local roles in concentrating internal Fe to the nodule. Furthermore, IMA peptides have conserved roles in regulating nitrogen homeostasis by adjusting nitrogen-Fe balance in L. japonicus and Arabidopsis thaliana. These findings indicate that IMA-mediated Fe provision plays an essential role in regulating nitrogen-related physiological processes.
Springer Science and Business Media LLC, 研究論文(学術雑誌)
DOI:https://doi.org/10.1038/s41467-024-44865-4
DOI ID:10.1038/s41467-024-44865-4, eISSN:2041-1723 - The Roles of Functional Amino Acids in Plant Growth and Development
Kensuke Kawade; Hiromitsu Tabeta; Ali Ferjani; Masami Yokota Hirai
Plant and Cell Physiology, 2023年07月, [査読有り], [筆頭著者, 責任著者]
Abstract
Plants incorporate acquired carbon and nitrogen into amino acid metabolism, whereby the building blocks of proteins and the precursors of various metabolites are produced. This fundamental demand requires tight amino acid metabolism to sustain physiological homeostasis. There is increasing evidence that amino acid metabolism undergoes plastic alteration to orchestrate specific growth and developmental events. Consequently, there has been a gradual exploration of the interface at which amino acid metabolism and plant morphogenesis are mutually affected. This research progress offers an opportunity to explore amino acid metabolism, with the goal to understand how it can be modulated to serve special cellular needs and regulate specific growth and developmental pathways. Continuous improvements in the sensitivity and coverage of metabolomics technology, along with the development of chemoinformatics, have allowed the investigation of these research questions. In this review, we summarize the roles of threonine, serine, arginine and γ-aminobutyric acid as representative examples of amino acids relevant to specific developmental processes in plants (‘functional amino acids’). Our objective is to expand perspectives regarding amino acid metabolism beyond the conventional view that it is merely life-supporting machinery.
Oxford University Press (OUP), 研究論文(学術雑誌)
DOI:https://doi.org/10.1093/pcp/pcad071
DOI ID:10.1093/pcp/pcad071, ISSN:0032-0781, eISSN:1471-9053 - Leaf-size control beyond transcription factors: Compensatory mechanisms
Hiromitsu Tabeta; Shizuka Gunji; Kensuke Kawade; Ali Ferjani
Frontiers in Plant Science, 巻:13, 2023年01月, [査読有り]
Plant leaves display abundant morphological richness yet grow to characteristic sizes and shapes. Beginning with a small number of undifferentiated founder cells, leaves evolve via a complex interplay of regulatory factors that ultimately influence cell proliferation and subsequent post-mitotic cell enlargement. During their development, a sequence of key events that shape leaves is both robustly executed spatiotemporally following a genomic molecular network and flexibly tuned by a variety of environmental stimuli. Decades of work on Arabidopsis thaliana have revisited the compensatory phenomena that might reflect a general and primary size-regulatory mechanism in leaves. This review focuses on key molecular and cellular events behind the organ-wide scale regulation of compensatory mechanisms. Lastly, emerging novel mechanisms of metabolic and hormonal regulation are discussed, based on recent advances in the field that have provided insights into, among other phenomena, leaf-size regulation.
Frontiers Media SA, 研究論文(学術雑誌)
DOI:https://doi.org/10.3389/fpls.2022.1024945
DOI ID:10.3389/fpls.2022.1024945, eISSN:1664-462X - Tissue-targeted inorganic pyrophosphate hydrolysis in a fugu5 mutant reveals that excess inorganic pyrophosphate triggers developmental defects in a cell-autonomous manner
Shizuka Gunji; Kensuke Kawade; Hiromitsu Tabeta; Gorou Horiguchi; Akira Oikawa; Mariko Asaoka; Masami Yokota Hirai; Hirokazu Tsukaya; Ali Ferjani
Frontiers in Plant Science, 巻:13, 2022年08月, [査読有り]
Excess PPi triggers developmental defects in a cell-autonomous manner. The level of inorganic pyrophosphate (PPi) must be tightly regulated in all kingdoms for the proper execution of cellular functions. In plants, the vacuolar proton pyrophosphatase (H+-PPase) has a pivotal role in PPi homeostasis. We previously demonstrated that the excess cytosolic PPi in the H+-PPase loss-of-function fugu5 mutant inhibits gluconeogenesis from seed storage lipids, arrests cell division in cotyledonary palisade tissue, and triggers a compensated cell enlargement (CCE). Moreover, PPi alters pavement cell (PC) shape, stomatal patterning, and functioning, supporting specific yet broad inhibitory effects of PPi on leaf morphogenesis. Whereas these developmental defects were totally rescued by the expression of the yeast soluble pyrophosphatase IPP1, sucrose supply alone canceled CCE in the palisade tissue but not the epidermal developmental defects. Hence, we postulated that the latter are likely triggered by excess PPi rather than a sucrose deficit. To formally test this hypothesis, we adopted a spatiotemporal approach by constructing and analyzing fugu5-1 PDF1pro::IPP1, fugu5-1 CLV1pro::IPP1, and fugu5-1 ICLpro::IPP1, whereby PPi was removed specifically from the epidermis, palisade tissue cells, or during the 4 days following seed imbibition, respectively. It is important to note that whereas PC defects in fugu5-1 PDF1pro::IPP1 were completely recovered, those in fugu5-1 CLV1pro::IPP1 were not. In addition, phenotypic analyses of fugu5-1 ICLpro::IPP1 lines demonstrated that the immediate removal of PPi after seed imbibition markedly improved overall plant growth, abolished CCE, but only partially restored the epidermal developmental defects. Next, the impact of spatial and temporal removal of PPi was investigated by capillary electrophoresis time-of-flight mass spectrometry (CE-TOF MS). Our analysis revealed that the metabolic profiles are differentially affected among all the above transgenic lines, and consistent with an axial role of central metabolism of gluconeogenesis in CCE. Taken together, this study provides a conceptual framework to unveil metabolic fluctuations within leaf tissues with high spatio–temporal resolution. Finally, our findings suggest that excess PPi exerts its inhibitory effect in planta in the early stages of seedling establishment in a tissue- and cell-autonomous manner.
Frontiers Media SA, 研究論文(学術雑誌)
DOI:https://doi.org/10.3389/fpls.2022.945225
DOI ID:10.3389/fpls.2022.945225, eISSN:1664-462X - Metabolic Control of Gametophore Shoot Formation through Arginine in the Moss Physcomitrium patens
Kensuke Kawade; Gorou Horiguchi; Yuu Hirose; Akira Oikawa; Masami Yokota Hirai; Kazuki Saito; Tomomichi Fujita; Hirokazu Tsukaya
Cell Reports, 巻:32, 号:10, 開始ページ:108127, 終了ページ:108127, 2020年09月, [査読有り], [筆頭著者, 責任著者], [国際誌]
Shoot formation is accompanied by active cell proliferation and expansion, requiring that metabolic state adapts to developmental control. Despite the importance of such metabolic reprogramming, it remains unclear how development and metabolism are integrated. Here, we show that disruption of ANGUSTIFOLIA3 orthologs (PpAN3s) compromises gametophore shoot formation in the moss Physcomitrium patens due to defective cell proliferation and expansion. Trans-omics analysis reveals that the downstream activity of PpAN3 is linked to arginine metabolism. Elevating arginine level by chemical treatment leads to stunted gametophores and causes Ppan3 mutant-like transcriptional changes in the wild-type plant. Furthermore, ectopic expression of AtAN3 from Arabidopsis thaliana ameliorates the defective arginine metabolism and promotes gametophore formation in Ppan3 mutants. Together, these findings indicate that arginine metabolism is a key pathway associated with gametophore formation and provide evolutionary insights into the establishment of the shoot system in land plants through the integration of developmental and metabolic processes.
Elsevier {BV}, 英語, 研究論文(学術雑誌)
DOI:https://doi.org/10.1016/j.celrep.2020.108127
DOI ID:10.1016/j.celrep.2020.108127, ORCID:80025818, PubMed ID:32905770 - an3-Mediated Compensation Is Dependent on a Cell-Autonomous Mechanism in Leaf Epidermal Tissue
Mamoru Nozaki; Kensuke Kawade; Gorou Horiguchi; Hirokazu Tsukaya
Plant and Cell Physiology, 巻:61, 号:6, 開始ページ:1181, 終了ページ:1190, 2020年06月, [査読有り], [責任著者], [国内誌]
Leaves are formed by coordinated growth of tissue layers driven by cell proliferation and expansion. Compensation, in which a defect in cell proliferation induces compensated cell enlargement (CCE), plays an important role in cell-size determination during leaf development. We previously reported that CCE triggered by the an3 mutation is observed in epidermal and subepidermal layers in Arabidopsis thaliana (Arabidopsis) leaves. Interestingly, CCE is induced in a non-cell autonomous manner between subepidermal cells. However, whether CCE in the subepidermis affects cell size in the adjacent epidermis is still unclear. We induced layer-specific expression of AN3 in an3 leaves and found that CCE in the subepidermis had little impact on cell-size determination in the epidermis, and vice versa, suggesting that CCE is induced in a tissue-autonomous manner. Examination of the epidermis in an3 leaves having AN3-positive and -negative sectors generated by Cre/loxP revealed that, in contrast to the subepidermis, CCE occurred exclusively in AN3-negative epidermal cells, indicating a cell autonomous action of an3-mediated compensation in the epidermis. These results clarified that the epidermal and subepidermal tissue layers have different cell autonomies in CCE. In addition, quantification of cell-expansion kinetics in epidermal and subepidermal tissues of the an3 showed that the tissues exhibited a similar temporal profile to reach a peak cell-expansion rate as compared to wild type. This might be one feature representing that the two tissue layers retain their growth coordination even in the presence of CCE.
Oxford University Press ({OUP}), 英語, 研究論文(学術雑誌)
DOI:https://doi.org/10.1093/pcp/pcaa048
DOI ID:10.1093/pcp/pcaa048, ORCID:75676187, PubMed ID:32321167 - Quantitative Imaging Reveals Distinct Contributions of SnRK2 and ABI3 in Plasmodesmatal Permeability in Physcomitrella patens
Takumi Tomoi; Kensuke Kawade; Munenori Kitagawa; Yoichi Sakata; Hirokazu Tsukaya; Tomomichi Fujita
Plant and Cell Physiology, 巻:61, 号:5, 開始ページ:942, 終了ページ:956, 2020年05月, [査読有り], [責任著者]Abstract
Cell-to-cell communication is tightly regulated in response to environmental stimuli in plants. We previously used a photoconvertible fluorescent protein Dendra2 as a model reporter to study this process. This experiment revealed that macromolecular trafficking between protonemal cells in Physcomitrella patens is suppressed in response to abscisic acid (ABA). However, it remains unknown which ABA signaling components contribute to this suppression and how. Here, we show that ABA signaling components SUCROSE NON-FERMENTING 1-RELATED PROTEIN KINASE 2 (PpSnRK2) and ABA INSENSITIVE 3 (PpABI3) play roles as an essential and promotive factor, respectively, in regulating ABA-induced suppression of Dendra2 diffusion between cells (ASD). Our quantitative imaging analysis revealed that disruption of PpSnRK2 resulted in defective ASD onset itself, whereas disruption of PpABI3 caused an 81-min delay in the initiation of ASD. Live-cell imaging of callose deposition using aniline blue staining showed that, despite this onset delay, callose deposition on cross walls remained constant in the PpABI3 disruptant, suggesting that PpABI3 facilitates ASD in a callose-independent manner. Given that ABA is an important phytohormone to cope with abiotic stresses, we further explored cellular physiological responses. We found that the acquisition of salt stress tolerance is promoted by PpABI3 in a quantitative manner similar to ASD. Our results suggest that PpABI3-mediated ABA signaling may effectively coordinate cell-to-cell communication during the acquisition of salt stress tolerance. This study will accelerate the quantitative study for ABA signaling mechanism and function in response to various abiotic stresses.
Oxford University Press ({OUP}), 研究論文(学術雑誌)
DOI:https://doi.org/10.1093/pcp/pcaa021
DOI ID:10.1093/pcp/pcaa021, ISSN:0032-0781, eISSN:1471-9053, ORCID:71631777 - Pyrophosphate inhibits gluconeogenesis by restricting UDP-glucose formation in vivo
Ali Ferjani; Kensuke Kawade; Mariko Asaoka; Akira Oikawa; Takashi Okada; Atsushi Mochizuki; Masayoshi Maeshima; Masami Yokota Hirai; Kazuki Saito; Hirokazu Tsukaya
Scientific Reports, 巻:8, 号:1, 開始ページ:14696, 終了ページ:14696, 2018年12月, [査読有り], [国際誌]
Pyrophosphate (PPi) is produced by anabolic reactions and serves as an energy donor in the cytosol of plant cells; however, its accumulation to toxic levels disrupts several common biosynthetic pathways and is lethal. Before acquiring photosynthetic capacity, young seedlings must endure a short but critical heterotrophic period, during which they are nourished solely by sugar produced from seed reserves by the anabolic process of gluconeogenesis. Previously, we reported that excess PPi in H+-PPase-knockout fugu5 mutants of Arabidopsis thaliana severely compromised gluconeogenesis. However, the precise metabolic target of PPi inhibition in vivo remained elusive. Here, CE-TOF MS analyses of major metabolites characteristic of gluconeogenesis from seed lipids showed that the Glc6P;Fru6P level significantly increased and that Glc1P level was consistently somewhat higher in fugu5 compared to wild type. In contrast, the UDP-Glc level decreased significantly in the mutants. Importantly, specific removal of PPi in fugu5, and thus in AVP1pro:IPP1 transgenic lines, restored the Glc1P and the Glc6P;Fru6P levels, increased the UDP-Glc level ~2.0-fold, and subsequently increased sucrose synthesis. Given the reversible nature of the Glc1P/UDP-Glc reaction, our results indicate that UGP-Glc pyrophosphorylase is the major target when excess PPi exerts inhibitory effects in vivo. To validate our findings, we analyzed metabolite responses using a mathematical theory called structural sensitivity analysis (SSA), in which the responses of concentrations in reaction systems to perturbations in enzyme activity are determined from the structure of the network alone. A comparison of our experimental data with the results of pure structural theory predicted the existence of unknown reactions as the necessary condition for the above metabolic profiles, and confirmed the above results. Our data support the notion that H+-PPase plays a pivotal role in cytosolic PPi homeostasis in plant cells. We propose that the combination of metabolomics and SSA is powerful when seeking to identify and predict metabolic targets in living cells.
Springer Science and Business Media {LLC}, 英語, 研究論文(学術雑誌)
DOI:https://doi.org/10.1038/s41598-018-32894-1
DOI ID:10.1038/s41598-018-32894-1, ORCID:48634905, PubMed ID:30279540, PubMed Central ID:PMC6168488 - The cytochrome P450 CYP77A4 is involved in auxin-mediated patterning of the Arabidopsis thaliana embryo
Kensuke Kawade; Yimeng Li; Hiroyuki Koga; Yuji Sawada; Mami Okamoto; Ayuko Kuwahara; Hirokazu Tsukaya; Masami Yokota Hirai
Development, 巻:145, 開始ページ:dev168369, 2018年09月, [査読有り], [筆頭著者, 責任著者]
研究論文(学術雑誌)
DOI:https://doi.org/10.1242/dev.168369
DOI ID:10.1242/dev.168369, ORCID:48237685 - Probing the stochastic property of endoreduplication in cell size determination of Arabidopsis thaliana leaf epidermal tissue
Kensuke Kawade; Hirokazu Tsukaya
PLOS ONE, 巻:12, 号:9, 開始ページ:e0185050, 2017年09月, [査読有り], [筆頭著者, 責任著者]
Public Library of Science ({PLoS}), 研究論文(学術雑誌)
DOI:https://doi.org/10.1371/journal.pone.0185050
DOI ID:10.1371/journal.pone.0185050, ORCID:36993988, PubMed ID:28926847 - Spatially Different Tissue-Scale Diffusivity Shapes ANGUSTIFOLIA3 Gradient in Growing Leaves.
Kensuke Kawade; Hirokazu Tanimoto; Gorou Horiguchi; Hirokazu Tsukaya
Biophysical Journal, 巻:113, 号:5, 開始ページ:1109, 終了ページ:1120, 2017年09月, [査読有り], [筆頭著者, 責任著者], [国際誌]
The spatial gradient of signaling molecules is pivotal for establishing developmental patterns of multicellular organisms. It has long been proposed that these gradients could arise from the pure diffusion process of signaling molecules between cells, but whether this simplest mechanism establishes the formation of the tissue-scale gradient remains unclear. Plasmodesmata are unique channel structures in plants that connect neighboring cells for molecular transport. In this study, we measured cellular- and tissue-scale kinetics of molecular transport through plasmodesmata in Arabidopsis thaliana developing leaf primordia by fluorescence recovery assays. These trans-scale measurements revealed biophysical properties of diffusive molecular transport through plasmodesmata and revealed that the tissue-scale diffusivity, but not the cellular-scale diffusivity, is spatially different along the leaf proximal-to-distal axis. We found that the gradient in cell size along the developmental axis underlies this spatially different tissue-scale diffusivity. We then asked how this diffusion-based framework functions in establishing a signaling gradient of endogenous molecules. ANGUSTIFOLIA3 (AN3) is a transcriptional co-activator, and as we have shown here, it forms a long-range signaling gradient along the leaf proximal-to-distal axis to determine a cell-proliferation domain. By genetically engineering AN3 mobility, we assessed each contribution of cell-to-cell movement and tissue growth to the distribution of the AN3 gradient. We constructed a diffusion-based theoretical model using these quantitative data to analyze the AN3 gradient formation and demonstrated that it could be achieved solely by the diffusive molecular transport in a growing tissue. Our results indicate that the spatially different tissue-scale diffusivity is a core mechanism for AN3 gradient formation. This provides evidence that the pure diffusion process establishes the formation of the long-range signaling gradient in leaf development.
英語, 研究論文(学術雑誌)
DOI:https://doi.org/10.1016/j.bpj.2017.06.072
DOI ID:10.1016/j.bpj.2017.06.072, ORCID:36993982, PubMed ID:28877493, PubMed Central ID:PMC5611674 - A novel method for single-grain-based metabolic profiling of Arabidopsis seed
Yuji Sawada; Hirokazu Tsukaya; Yimeng Li; Muneo Sato; Kensuke Kawade; Masami Yokota Hirai
Metabolomics, 巻:13, 号:6, 2017年05月, [査読有り]
Introduction In plant metabolomics, metabolite contents are often normalized by sample weight. However, accurate weighing of very small samples, such as individual Arabidopsis thaliana seeds ( approximately 20 mu g), is difficult, which may lead to irreproducible results.Objectives We aimed to establish alternative normalization methods for seed-grain-based comparative metabolomics of A. thaliana.Methods Arabidopsis thaliana seeds were assumed to have a prolate spheroid shape. Using a microscope image of each seed, the lengths of major and minor axes were measured by fitting a projected 2-dimensional shape of each seed as an ellipse. Metabolic profiles of individual diploid or tetraploid A. thaliana seeds were measured by our highly sensitive protocol ("widely targeted metabolomics") that uses liquid chromatography coupled with tandem quadrupole mass spectrometry. Mass spectrometric analysis of 1 mu L of solution extract identified more than 100 metabolites. The data were normalized by various seed-size measures, including seed volume ( single-grain-based analysis). For comparison, metabolites were extracted from 4 mg of diploid and tetraploid A. thaliana seeds and their metabolic profiles were analyzed by normalization of weight (weight-based analysis).Results A small number of metabolites showed statistically significant differences in the single-grain-based analysis compared to weight-based analysis. A total of 17 metabolites showed statistically different accumulation between ploidy types with similar fold changes in both analyses.Conclusion Seed-size measures obtained by microscopic imaging were useful for data normalization. Single-grain-based analysis enables evaluation of metabolism of each seed and elucidates the metabolic profiles of precious bioresources by using small amounts of samples.
Springer Nature, 英語, 研究論文(学術雑誌)
DOI:https://doi.org/10.1007/s11306-017-1211-1
DOI ID:10.1007/s11306-017-1211-1, ISSN:1573-3882, eISSN:1573-3890, ORCID:33950835, Web of Science ID:WOS:000401711400010 - Detection of the Cell Proliferation Zone in Leaves by Using EdU
Hokuto Nakayama; Kensuke Kawade; Hirokazu Tsukaya; Seisuke Kimura
BIO-PROTOCOL, 巻:5, 号:18, 2015年09月, [査読有り]
Bio-Protocol, {LLC}, 研究論文(学術雑誌)
DOI:https://doi.org/10.21769/bioprotoc.1600
DOI ID:10.21769/bioprotoc.1600, ORCID:33950834 - Compensation: a key to clarifying the organ-level regulation of lateral organ size in plants
T. Hisanaga; K. Kawade; H. Tsukaya
Journal of Experimental Botany, 巻:66, 号:4, 開始ページ:1055, 終了ページ:1063, 2015年01月, [査読有り]
Oxford University Press ({OUP}), 研究論文(学術雑誌)
DOI:https://doi.org/10.1093/jxb/erv028
DOI ID:10.1093/jxb/erv028, ORCID:33951123 - Mobility of signaling molecules: the key to deciphering plant organogenesis
Kensuke Kawade; Hirokazu Tanimoto
Journal of Plant Research, 巻:128, 号:1, 開始ページ:17, 終了ページ:25, 2015年01月, [査読有り], [筆頭著者, 責任著者]
Springer Nature, 研究論文(学術雑誌)
DOI:https://doi.org/10.1007/s10265-014-0692-5
DOI ID:10.1007/s10265-014-0692-5, ORCID:33950983 - Proliferative control of leaf cells through inter-cell-layer AN3 signaling
Kensuke Kawade
PLANT MORPHOLOGY, 巻:26, 号:1, 開始ページ:59, 終了ページ:63, 2014年04月, [査読有り], [筆頭著者, 責任著者]
The Japanese Society of Plant Morphology, 研究論文(学術雑誌)
DOI:https://doi.org/10.5685/plmorphol.26.59
DOI ID:10.5685/plmorphol.26.59, ORCID:33951051 - Promotion of chloroplast proliferation upon enhanced post-mitotic cell expansion in leaves
Kensuke Kawade; Gorou Horiguchi; Naoko Ishikawa; Masami Hirai; Hirokazu Tsukaya
BMC Plant Biology, 巻:13, 号:1, 開始ページ:143, 終了ページ:143, 2013年09月, [査読有り], [筆頭著者, 責任著者], [国際誌]
BACKGROUND: Leaves are determinate organs; hence, precise control of cell proliferation and post-mitotic cell expansion is essential for their growth. A defect in cell proliferation often triggers enhanced post-mitotic cell expansion in leaves. This phenomenon is referred to as 'compensation'. Several lines of evidence from studies on compensation have shown that cell proliferation and post-mitotic cell expansion are coordinately regulated during leaf development. Therefore, compensation has attracted much attention to the mechanisms for leaf growth. However, our understanding of compensation at the subcellular level remains limited because studies of compensation have focused mainly on cellular-level phenotypes. Proper leaf growth requires quantitative control of subcellular components in association with cellular-level changes. To gain insight into the subcellular aspect of compensation, we investigated the well-known relationship between cell area and chloroplast number per cell in compensation-exhibiting lines, and asked whether chloroplast proliferation is modulated in response to the induction of compensation. RESULTS: We first established a convenient and reliable method for observation of chloroplasts in situ. Using this method, we analyzed Arabidopsis thaliana mutants fugu5 and angustifolia3 (an3), and a transgenic line KIP-RELATED PROTEIN2 overexpressor (KRP2 OE), which are known to exhibit typical features of compensation. We here showed that chloroplast number per cell increased in the subepidermal palisade tissue of these lines. We analyzed tetraploidized wild type, fugu5, an3 and KRP2 OE, and found that cell area itself, but not nuclear ploidy, is a key parameter that determines the activity of chloroplast proliferation. In particular, in the case of an3, we uncovered that promotion of chloroplast proliferation depends on the enhanced post-mitotic cell expansion. The expression levels of chloroplast proliferation-related genes are similar to or lower than that in the wild type during this process. CONCLUSIONS: This study demonstrates that chloroplast proliferation is promoted in compensation-exhibiting lines. This promotion of chloroplast proliferation takes place in response to cell-area increase in post-mitotic phase in an3. The expression of chloroplast proliferation-related genes were not promoted in compensation-exhibiting lines including an3, arguing that an as-yet-unknown mechanism is responsible for modulation of chloroplast proliferation in these lines.
Springer Nature, 英語, 研究論文(学術雑誌)
DOI:https://doi.org/10.1186/1471-2229-13-143
DOI ID:10.1186/1471-2229-13-143, ORCID:33951118, PubMed ID:24074400, PubMed Central ID:PMC3849334 - ANGUSTIFOLIA3 Signaling Coordinates Proliferation between Clonally Distinct Cells in Leaves
Kensuke Kawade; Gorou Horiguchi; Takeshi Usami; Masami Yokota Hirai; Hirokazu Tsukaya
Current Biology, 巻:23, 号:9, 開始ページ:788, 終了ページ:792, 2013年05月, [査読有り], [筆頭著者, 責任著者], [国際誌]
Coordinated proliferation between clonally distinct cells via inter-cell-layer signaling largely determines the size and shape of plant organs. Nonetheless, the signaling mechanism underlying this coordination in leaves remains elusive because of a lack of understanding of the signaling molecule (or molecules) involved. ANGUSTIFOLIA3 (AN3, also called GRF-INTERACTING FACTOR1) encodes a putative transcriptional coactivator with homology to human synovial sarcoma translocation protein. AN3 transcripts accumulate in mesophyll cells but are not detectable in leaf epidermal cells. However, we found here that in addition to mesophyll cells, epidermal cells of an3 leaves show defective proliferation. This spatial difference between the accumulation pattern of AN3 transcripts and an3 leaf phenotype is explained by AN3 protein movement across cell layers. AN3 moves into epidermal cells after being synthesized within mesophyll cells and helps control epidermal cell proliferation. Interference with AN3 movement results in abnormal leaf size and shape, indicating that AN3 signaling is indispensable for normal leaf development. AN3 movement does not require type II chaperonin activity, which is needed for movement of some mobile proteins. Taking these findings together, we present a novel model emphasizing the role of mesophyll cells as a signaling source coordinating proliferation between clonally independent leaf cells.
Elsevier {BV}, 英語, 研究論文(学術雑誌)
DOI:https://doi.org/10.1016/j.cub.2013.03.044
DOI ID:10.1016/j.cub.2013.03.044, ORCID:33951052, PubMed ID:23602479 - Key Proliferative Activity in the Junction between the Leaf Blade and Leaf Petiole of Arabidopsis
Yasunori Ichihashi; Kensuke Kawade; Takeshi Usami; Gorou Horiguchi; Taku Takahashi; Hirokazu Tsukaya
PLANT PHYSIOLOGY, 巻:157, 号:3, 開始ページ:1151, 終了ページ:1162, 2011年08月, [査読有り]
American Society of Plant Biologists ({ASPB}), 研究論文(学術雑誌)
DOI:https://doi.org/10.1104/pp.111.185066
DOI ID:10.1104/pp.111.185066, ORCID:33951187 - Non-cell-autonomously coordinated organ-size regulation in leaf development
Kensuke Kawade; Gorou Horiguchi; Hirokazu Tsukaya
Development, 巻:137, 号:24, 開始ページ:4221, 終了ページ:4227, 2010年11月, [査読有り], [筆頭著者]
The Company of Biologists, 研究論文(学術雑誌)
DOI:https://doi.org/10.1242/dev.057117
DOI ID:10.1242/dev.057117, CiNii Articles ID:20001449881, ORCID:33951121 - Transcriptional control of two ribosome-inactivating protein genes expressed in spinach (Spinacia oleracea) embryos
Kensuke Kawade; Kiyoshi Masuda
Plant Physiology and Biochemistry, 巻:47, 号:5, 開始ページ:327, 終了ページ:334, 2009年05月, [査読有り], [筆頭著者, 責任著者]
Elsevier {BV}, 研究論文(学術雑誌)
DOI:https://doi.org/10.1016/j.plaphy.2008.12.020
DOI ID:10.1016/j.plaphy.2008.12.020, ORCID:33950839 - Differential expression of ribosome-inactivating protein genes during somatic embryogenesis in spinach (Spinacia oleracea)
Kensuke Kawade; Takuma Ishizaki; Kiyoshi Masuda
Physiologia Plantarum, 巻:134, 号:2, 開始ページ:270, 終了ページ:281, 2008年10月, [査読有り], [筆頭著者]
Wiley-Blackwell, 研究論文(学術雑誌)
DOI:https://doi.org/10.1111/j.1399-3054.2008.01129.x
DOI ID:10.1111/j.1399-3054.2008.01129.x, ORCID:33950837
- コケ植物における茎葉形成に重要なアルギニン代謝
川出健介
バイオサイエンスとインダストリー, 巻:79, 開始ページ:222, 終了ページ:223, 2021年, [筆頭著者, 責任著者] - 代謝システムからみる植物の形づくり
川出健介
アグリバイオ, 巻:3, 開始ページ:453, 終了ページ:457, 2019年, [筆頭著者, 責任著者] - 表皮細胞の大きさと核内倍加のサイコロゲーム
川出健介
植物科学最前線, 2019年, [筆頭著者, 責任著者] - 拡散により植物モルフォゲンの濃度勾配ができる仕組み
川出健介; 谷本博一
academist Journal, 2017年, [筆頭著者, 責任著者]
- マメ科植物における根粒共生と水分獲得のトレードオフ
川出健介
第18回 メタボロームシンポジウム, 2024年10月, [招待有り]
2024年10月 - 2024年10月 - ヒメツリガネゴケの体制とアルギニン代謝の流れる方向性
川出健介
第87 回 日本植物学会大会, 2023年, [招待有り] - 植物の幹細胞活性とアルギニン代謝を紐付ける仕組み
川出健介
第42 回 日本分子生物学会年会, 2019年, [招待有り] - 発生シグナルの時空間動態を解くための実験と理論
川出健介
第82 回 日本植物学会大会, 2018年, [招待有り] - Biased distribution of tissue-scale diffusivity shapes ANGUSTIFOLIA3 signaling gradient in growing leaf tissue
Kensuke Kawade
第50 回 日本発生生物学会大会, 2017年, [招待有り] - 組織内の偏った拡散性が細胞間シグナル因子の発現勾配を形づくる
川出健介
第69 回 日本細胞生物学会大会, 2017年, [招待有り] - Plant morphogen intertwined with metabolism
Kensuke Kawade
ConBio2017, 2017年, [招待有り] - Spatiotemporal control of cell proliferation activity in a heterogeneous field of protein diffusivity in plants
Kensuke Kawade
第37 回 日本分子生物学会年会, 2014年, [招待有り] - Cell-to-cell variability of protein trafficking dynamics in leaf primordia
Kensuke Kawade
第55 回 日本植物生理学会年会, 2014年, [招待有り] - 葉原基におけるタンパク質拡散係数の非一様性と細胞増殖活性の時空間分布
川出健介
第46 回 日本発生生物学会大会, 2013年, [招待有り] - 葉原基におけるAN3 の発現勾配と細胞増殖活性の時空間分布
川出健介
第77 回 日本植物学会大会, 2013年, [招待有り]
- 共生を支える超階層システミックシグナリングとメタボロミクス
日本学術振興会, 科学研究費助成事業, 基盤研究(A), 2023年04月 - 2027年03月
川口 正代司; 岡本 暁; 川出 健介, 基礎生物学研究所
配分額(総額):47060000, 配分額(直接経費):36200000, 配分額(間接経費):10860000
課題番号:23H00381 - 陸上植物の体制進化におけるアルギニン代謝の新たな役割
日本学術振興会, 科学研究費助成事業 基盤研究(C), 基盤研究(C), 2022年04月 - 2025年03月
川出 健介, 基礎生物学研究所
配分額(総額):4290000, 配分額(直接経費):3300000, 配分額(間接経費):990000
これまでに、陸上植物の進化において初期に現れたコケ植物・ヒメツリガネゴケでは、茎や葉からなるシュート組織(茎葉体)の発生および成長がアルギニン代謝の変化で促進される現象を見いだしている。そこで本研究では、茎葉体の発生および成長に応じて活性化もしくは抑制される代謝経路の同定を最初の課題とした。そのために、安定同位体13C(炭素)もしくは15N(窒素)で標識したアルギニンをヒメツリガネゴケ組織に取り込ませ、茎葉体の発生および成長とともに利用される動態を質量分析装置で解析する実験系の構築に着手した。ここではまず、安定同位体標識アルギニンをヒメツリガネゴケ組織に処理する方法を検討するとともに、処理する濃度および時間の組み合わせを最適化することを試みた。そして、安定同位体標識アルギニンを添加した培地の上にセロハンを敷き、その上で培養したヒメツリガネゴケにおいて、安定同位体標識アルギニンだけでなく、アルギニン代謝に関連するアグマチン、シトルリン、オルニチンにも安定同位体を含むものを検出する実験系を確立することができた。次に、安定同位体標識アルギニンを処理した後に時系列に沿って原糸体や茎葉体を採集し、茎葉体で特徴的に見られるアルギニン代謝の動態を同定するための実験に取り組んだ。そうしたところ、アグマチン、シトルリン、オルニチンの3方向へ代謝されうるアルギニンが、茎葉体では特徴的な方向へ偏って代謝されていることが分かってきた。このような、アルギニン代謝の発生および成長に応じた特徴的な変化はこれまで知られていないことから、茎葉体におけるアルギニン代謝の役割について考察する重要な知見を得ることができた。
課題番号:22K06289 - トランスオミクスに基づく一次代謝を介した芽生えの発生制御システムの解明
日本学術振興会, 科学研究費助成事業 若手研究(B), 若手研究(B), 2017年04月01日 - 2020年03月31日
川出 健介
配分額(総額):4550000, 配分額(直接経費):3500000, 配分額(間接経費):1050000
生物の形づくりには細胞の増殖や肥大が欠かせない。したがって、その活発な増殖や肥大を維持もしくは駆動するような代謝の活性化メカニズムがあるはずである。本研究では、植物の芽生えを題材とし、そのような代謝活性化を担う遺伝的な仕組みの解明を進めた。そして、細胞の増殖とアミノ酸代謝をつなぐ新しい制御機構を同定することができた。また、その制御機構が進化の過程でどのように成立してきたのか理解するための、重要なヒントも得ることができた。
課題番号:17K15147 - 植物個体発生を支える代謝ネットワークの解明
日本学術振興会, 科学研究費助成事業, 新学術領域研究(研究領域提案型), 2013年06月 - 2018年03月
平井 優美; 望月 敦史; 及川 彰; 澤田 有司; 李 一蒙; 境 祐二; シュタサ カンスポーン; 岡村 英治; 川出 健介; ベルガラ フレッド, 国立研究開発法人理化学研究所
配分額(総額):141570000, 配分額(直接経費):108900000, 配分額(間接経費):32670000
代謝は生命現象の基盤であるが、代謝ネットワークのダイナミクスおよび個体発生における役割についての理解は不十分である。本研究は、メタボロミクスを駆使し、数理解析によって植物代謝システムのダイナミクスを理解すること、および分子遺伝学的手法によって発生過程を制御する代謝経路を明らかにすることを目的とした。理論構築とその適用、予測と検証などの数理的手法と生物学的実験を組み合わせた研究を行なって、いくつかの発生過程の原理を明らかにした。また、分子遺伝学的手法による研究を行ない、代謝酵素CYP77A4が関与する代謝経路がシロイヌナズナ胚のパターニングを制御していることを明らかにした。
課題番号:25113010 - 葉の発生ロジックの多元的開拓
日本学術振興会, 科学研究費助成事業, 新学術領域研究(研究領域提案型), 2013年06月 - 2018年03月
塚谷 裕一; Ferjani Ali; 坂本 卓也; 堀口 吾朗; 松永 幸大; 榊原 恵子; 山口 貴大; 川出 健介; 古賀 晧之, 東京大学
配分額(総額):165750000, 配分額(直接経費):127500000, 配分額(間接経費):38250000
教科書の知見を塗り替える、あるいは新たに付け加えることができる成果として、(1)核内倍加によるゲノムの量と細胞サイズとの関係性は、従来思われてきたような一義的なものではないことの発見(Tsukaya 2013; Katagiri et al. 2016:後者は、日本植物形態学会の平瀬賞を受賞)、(2)葉の細胞分裂領域の時空間的な制御は、AN3タンパク質のモルフォゲン的挙動(つまり細胞間の単純拡散)のみで説明できることの発見(Kawade et al. 2017)を得た。
課題番号:25113002 - 葉原基にみられるタンパク質拡散動態の非一様性
日本学術振興会, 科学研究費助成事業 若手研究(B), 若手研究(B), 2015年04月01日 - 2017年03月31日
川出 健介, 大学共同利用機関法人自然科学研究機構(岡崎共通研究施設)
配分額(総額):3120000, 配分額(直接経費):2400000, 配分額(間接経費):720000
葉における細胞増殖活性の時空間分布を規定するAN3シグナル勾配の形成原理について、実験および理論的に研究を進め、定量的に精度の高いモデルの構築に成功した。これにより、細胞サイズの偏りがシグナル勾配の形成に大きな影響をもつという、発生現象全般を考えるうえで重要な視点を初めて提示することに成功した。この成果は、日本植物形態学会および日本植物学会でポスター発表するとともに、国際誌に原著論文として投稿中である(Kawade et al., submitted)。
課題番号:15K18549 - 葉原基におけるAN3の発現勾配と細胞増殖活性の時空間分布
日本学術振興会, 科学研究費助成事業 特別研究員奨励費, 特別研究員奨励費, 2014年04月25日 - 2015年03月31日
川出 健介, 大学共同利用機関法人自然科学研究機構(岡崎共通研究施設)
配分額(総額):1820000, 配分額(直接経費):1400000, 配分額(間接経費):420000
本研究課題では、細胞増殖を促進する転写コアクチベータANGUSTIFOLIA3 (AN3) が、シロイヌナズナ葉原基内にいかにして再現性良く発現分布を形成しているのか解明することが目的のひとつである。そこで、AN3と同等の分子量をもつGFPを用いてまずはFRAP解析 によるGFP拡散性の検討を行った。その結果、細胞増殖の活発な葉原基の基部ではタンパク質拡散性が低く、細胞増殖を停止し始めている先端部では高いことが明らかになってきた。本年度は、EMBO workshopや日本分子生物学会ワークショップでこの興味深い現象を積極的に発表した。
これまで、原形質連絡を介したタンパク質の移動については、分子レベルで盛んに研究が進められてきたが、この際の理論モデルはほとんど検討されていない。そこで、核膜孔複合体で提案されている理論モデルを応用して(Paine et al., 1975)、GFPが原形質連絡を通る際の動態を理論的に調べた。その結果、原形質連絡の孔がGFPに比べて10倍大きい場合であってもGFP拡散性は孔の大きさに影響を受けること、原形質連絡の孔が10 nmから40 nmへと変化した場合にGFP拡散性は2倍も高まることが分かった。これらの内容はJournal of Plant Research誌に発表した(Kawade and Tanimoto, 2015)。
さらに、AN3の細胞間移動と細胞増殖活性の関係について進化的な視点で考察するため、体制のシンプルなヒメツリガネゴケのAN3ホモログに着目した研究についても取り組み始めた。まず、ヒメツリガネゴケのゲノムデータベースで類似のタンパク質を探索し、4つのAN3ホモログを同定した。そして、これらの遺伝子下流にDendra2をノックインした形質転換系統を作出した。現在、各タンパク質の詳細な発現パターンを調べているところである。
課題番号:14J02337 - CRE/Loxシステムを用いたキメラ解析による葉器官サイズ制御機構の解明
日本学術振興会, 科学研究費助成事業 特別研究員奨励費, 特別研究員奨励費, 2009年 - 2010年
川出 健介, 東京大学
配分額(総額):1400000, 配分額(直接経費):1400000
葉の発生過程において、細胞増殖がある閾値以下に欠損した場合、その後の細胞肥大が異常に昂進する補償作用という現象が知られている。本研究課題ではこれまで、Cre/lox系により、ANGUSTIFOLIA3(AN3)遺伝子をキメラ状に発現する葉を人工的に誘導できる実験系を構築してきた。そして、キメラ葉の解析から、補償作用が細胞間シグナリングを介して進行することを明らかにしてきた。そこで本年度は、この未知なる細胞間シグナリングの性質を明らかにするために、さらに詳細なキメラ解析を行った。まずは、an3遺伝的背景でセクター状にAN3の発現する野生型の細胞が存在するキメラ葉を用いて、この細胞間シグナリングの影響する範囲を検討した。その結果、この細胞間シグナリングの影響は、およそ20細胞以上も伝播する非常に広範囲に及ぶものであることが明らかになった。ところが、中肋を境としてan3と野生型の細胞が分かれるキメラ葉を解析した結果、an3の細胞は補償作用を起こしているにも関わらず、野生型の細胞は補償作用を起こしていなかった。この結果は、an3変異により誘導される細胞間シグナリングは、中肋構造を超えて影響を及ぼさないこと示している。このように、葉身の半分をひとつのユニットとして機能する細胞間シグナリングはこれまでに知られていないことから、多細胞レベルで進行する葉の発生メカニズムを理解するうえで、新規の手がかりになると期待される。
課題番号:09J07214
- プレスリリース「植物の形づくりを促すアミノ酸代謝を発見」
本人, https://www.excells.orion.ac.jp/news/1966, 2020年09月 - プレスリリース「植物の双葉を2枚にする酵素を発見」
本人, http://www.excells.orion.ac.jp/pr/20180913rh01.html, 2018年09月 - プレスリリース「シンプルな物理現象「拡散」で葉の形や大きさが決まる仕組みを解明」
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