Koki Fujisaki

Profile Information

Affiliation: Iwate Biotechnology Research Center

J-GLOBAL ID: 201801012864430518
researchmap Member ID: B000334941

Research Interests

Research Areas

Environmental science/Agricultural science / Conservation science (plants) / Plant pathology

Research History

Apr, 2016 - Present

主任研究員, 園芸資源研究部, 岩手生物工学研究センター
Apr, 2012 - Mar, 2016

研究員, ゲノム育種研究部, 岩手生物工学研究センター
Apr, 2010 - Mar, 2012

契約研究員, 遺伝ゲノム研究部, 岩手生物工学研究センター
Jul, 2008 - Mar, 2010

Post-doctor, Texas A&M university / Indiana university
Apr, 2007 - Jun, 2008

特別研究員, 植物・微生物間相互作用研究ユニット, 農業生物資源研究所
Apr, 2004 - Mar, 2007

日本学術振興会特別研究員（農業生物資源研究所）
Apr, 2003 - Mar, 2004

教務補佐員, 農学研究科, 京都大学大学院

Education

Apr, 1998 - Mar, 2003

応用生物科学専攻, 農学研究科, 京都大学大学院
Apr, 1994 - Mar, 1998

Department of Applied Biological Science, Faculty of Agriculture, Tokyo University of Agriculture and Technology

Committee Memberships

Mar, 2017 - Present

幹事, 日本植物病理学会東北部会
Jan, 2024 - Dec, 2025

編集幹事, 日本植物病理学会誌編集局

Papers

Barley MLA3 recognizes the host-specificity effector Pwl2 from Magnaporthe oryzae.

Helen J Brabham, Diana Gómez De La Cruz, Vincent Were, Motoki Shimizu, Hiromasa Saitoh, Inmaculada Hernández-Pinzón, Phon Green, Jennifer Lorang, Koki Fujisaki, Kazuhiro Sato …

The Plant cell, Oct 11, 2023
Disentangling the complex gene interaction networks between rice and the blast fungus identifies a new pathogen effector.

Yu Sugihara, Yoshiko Abe, Hiroki Takagi, Akira Abe, Motoki Shimizu, Kazue Ito, Eiko Kanzaki, Kaori Oikawa, Jiorgos Kourelis, Thorsten Langner …

PLoS biology, 21(1) e3001945, Jan, 2023 Peer-reviewedLast authorCorresponding author
Damping-off on Cabbage Caused by Rhizoctonia solani AG-2-1 and AG-2-2 IV

Yasuya IWADATE, Honoka NISHIMURA, Koki FUJISAKI, Tomoo MISAWA

Annual rep. Soc. Plant Prot. North Japan, 73 26-31, Dec, 2022 Peer-reviewed
Rice apoplastic CBM1-interacting protein counters blast pathogen invasion by binding conserved carbohydrate binding module 1 motif of fungal proteins.

Takumi Takeda, Machiko Takahashi, Motoki Shimizu, Yu Sugihara, Tetsuro Yamashita, Hiromasa Saitoh, Koki Fujisaki, Kazuya Ishikawa, Hiroe Utsushi, Eiko Kanzaki …

PLoS pathogens, 18(9) e1010792, Sep, 2022 Peer-reviewed
Tangled gene-for-gene interactions mediate co-evolution of the rice NLR immune receptor Pik and blast fungus effector proteins

Yu Sugihara, Yoshiko Abe, Hiroki Takagi, Akira Abe, Motoki Shimizu, Kazue Ito, Eiko Kanzaki, Kaori Oikawa, Jiorgos Kourelis, Thorsten Langner …

Jul 20, 2022
Binding of a blast fungus Zinc-finger fold effector to a hydrophobic pocket in the host exocyst subunit Exo70 modulates immune recognition in rice

Juan Carlos De la Concepcion, Koki Fujisaki, Adam R. Bentham, Neftaly Cruz Mireles, Victor Sanchez de Medina Hernandez, Motoki Shimizu, David M. Lawson, Sophien Kamoun, Ryohei Terauchi, Mark J. Banfield

Proceedings of the National Academy of Sciences of the United States of America, 119(43) e2210559119, Jun 19, 2022 Peer-reviewed
A jacalin-like lectin domain-containing protein of Sclerospora graminicola acts as an apoplastic virulence effector in plant-oomycete interactions.

Michie Kobayashi, Hiroe Utsushi, Koki Fujisaki, Takumi Takeda, Tetsuro Yamashita, Ryohei Terauchi

Molecular plant pathology, 23(6) 845-854, Mar 8, 2022 Peer-reviewed
Apoplastic CBM1-interacting proteins bind conserved carbohydrate binding module 1 motifs in fungal hydrolases to counter pathogen invasion

Takumi Takeda, Machiko Takahashi, Motoki Shimizu, Yu Sugihara, Hiromasa Saitoh, Koki Fujisaki, Kazuya Ishikawa, Hiroe Utsushi, Eiko Kanzaki, Yuichi Sakamoto …

Jan 2, 2022 Peer-reviewed
Damping-off of Wasabi Caused by Rhizoctonia solani AG2-1・Subset2 and AG-2-1･Clade HK

Manami MORI, Yasuya IWADATE, Koki FUJISAKI, Tomoo MISAWA

Annual rep. Soc. Plant Prot. North Japan, 72 19-24, Dec, 2021 Peer-reviewed
Occurrence of Leaf-sheath Rot of Welsh Onion Caused by Rhizoctonia spp. in Iwate Prefecture and Its Pathogens.

Yasuya Iwadate, Honoka Nishimura, Hiroto Fukuda, Tomoyuki Tominaga, Manami Mori, Koki Fujisaki, Tomoo Misawa

Annual rep. Soc. Plant Prot. North Japan, 72 1-7, Dec, 2021 Peer-reviewed
Infectious in vitro transcripts from a cDNA clone of a Japanese gentian isolate of Sikte waterborne virus, which shows host-specific low-temperature-dependent replication

Koki Fujisaki, Chika Tateda, Yoshiko Abe, John Jewish A. Dominguez, Mari Iwai, Kazue Obara, Taiki Nakamura, Yasuya Iwadate, Masanori Kaido, Kazuyuki Mise

Archives of Virology, (7) 1991-1997, 2021 Peer-reviewedLead authorCorresponding author
Host specific preference for low temperature in the multiplication of a tombusvirus, gentian virus A

Koki Fujisaki, Yoshiko Abe, Chika Tateda, Mari Iwai, Masanori Kaido, Kazuyuki Mise

Virus Research, 286 198048-198048, Sep, 2020 Peer-reviewedLead authorCorresponding author
The host stomatal density determines resistance to Septoria gentianae in Japanese gentian.

Tateda C, Obara K, Abe Y, Sekine R, Nekoduka S, Hikage T, Nishihara M, Sekine KT, Fujisaki K

Molecular plant-microbe interactions : MPMI, 32(4) 428-436, Apr, 2019 Peer-reviewedLast authorCorresponding author
First Report of Southern Blight on Aconitum japonicum, a Medicinal Plant, Caused by Sclerotium rolfsii in Japan

69(69) 55-59, Dec, 2018 Peer-reviewedLast author
Identification and characterization of a tombusvirus isolated from Japanese gentian

Koki Fujisaki, Chika Tateda, Asuka Shirakawa, Mari Iwai, Yoshiko Abe

Archives of Virology, 163(9) 1-7, May, 2018 Peer-reviewedLead authorCorresponding author
A chloroplast-localized protein LESION AND LAMINA BENDING affects defence and growth responses in rice

Muluneh Tamiru, Hiroki Takagi, Akira Abe, Takao Yokota, Hiroyuki Kanzaki, Haruko Okamoto, Hiromasa Saitoh, Hideyuki Takahashi, Koki Fujisaki, Kaori Oikawa …

NEW PHYTOLOGIST, 210(4) 1282-1297, Jun, 2016 Peer-reviewed
Rice Exo70 interacts with a fungal effector, AVR-Pii, and is required for AVR-Pii-triggered immunity

Koki Fujisaki, Yoshiko Abe, Akiko Ito, Hiromasa Saitoh, Kentaro Yoshida, Hiroyuki Kanzaki, Eiko Kanzaki, Hiroe Utsushi, Tetsuro Yamashita, Sophien Kamoun …

PLANT JOURNAL, 83(5) 875-887, Sep, 2015 Peer-reviewedLead author
The tillering phenotype of the rice plastid terminal oxidase (PTOX) loss-of-function mutant is associated with strigolactone deficiency

Muluneh Tamiru, Akira Abe, Hiroe Utsushi, Kakoto Yoshida, Hiroki Takagi, Koki Fujisaki, Jerwin R. Undan, Sujay Rakshit, Shinichi Takaichi, Yusuke Jikumaru …

NEW PHYTOLOGIST, 202(1) 116-131, Apr, 2014 Peer-reviewed
Deployment of the Burkholderia glumae type III secretion system as an efficient tool for translocating pathogen effectors to monocot cells

Shailendra Sharma, Shiveta Sharma, Akiko Hirabuchi, Kentaro Yoshida, Koki Fujisaki, Akiko Ito, Aiko Uemura, Ryohei Terauchi, Sophien Kamoun, Kee Hoon Sohn …

PLANT JOURNAL, 74(4) 701-712, May, 2013 Peer-reviewed
Arms race co-evolution of Magnaporthe oryzae AVR-Pik and rice Pik genes driven by their physical interactions

Hiroyuki Kanzaki, Kentaro Yoshida, Hiromasa Saitoh, Koki Fujisaki, Akiko Hirabuchi, Ludovic Alaux, Elisabeth Fournier, Didier Tharreau, Ryohei Terauchi

PLANT JOURNAL, 72(6) 894-907, Dec, 2012 Peer-reviewed

Misc.

Establishment of a large-scale plant virus infection system using low temperature-dependent virus multiplication.

Fujisaki, K, Abe, Y, Iwai, M, Dominguez, J.J.A, Mise, K

Sep, 2023 Lead author
Barley MLA3 recognizes the host-specificity determinant PWL2 from rice blast (M. oryzae)

Helen J. Brabham, Diana Gómez De La Cruz, Vincent Were, Motoki Shimizu, Hiromasa Saitoh, Inmaculada Hernández-Pinzón, Phon Green, Jennifer Lorang, Koki Fujisaki, Kazuhiro Sato …

Oct 22, 2022
Basic research of plant-pathogen interactions from gentian fields

Fujisaki, K., Tateda, C., Dominguez, J.J.A., Sekine, KT. and Nishihara, M

56 97-105, Sep, 2022 Lead authorCorresponding author
Analysis of host adaptation mechanism of Sikte waterborne virus, a novel viral pathogen of Japanese gentians.

Mar, 2022 Lead author
Analysis of fungal disease resistance mediated by F3′5′H, a flower color determinant gene in Japanese gentians.

Mar, 2022 Last author
Analysis of systemic-induced susceptibility caused by Septoria gentianae in gentian plants.

Mar, 2022 Last author
Rhizoctonia solani AG-2-1 Subset 1によるホップ株腐病（新称）

岩舘康哉, 菅広和, 藤崎恒喜

令和3年度日本植物病理学会東北部会講演要旨集, Sep, 2021 Last author
培養リンドウを用いた炭疽病菌（Colletotrichum acutatum）の発病機構の解析

Dominguez, John Jewish, 岩井摩莉, 阿部善子, 藤崎恒喜

令和3年度日本植物病理学会東北部会講演要旨集, Mar, 2021 Last author
The blast pathogen effector AVR-Pik binds and stabilizes rice heavy metal-associated (HMA) proteins to co-opt their function in immunity

K. Oikawa, K. Fujisaki, M. Shimizu, T. Takeda, H. Saitoh, A. Hirabuchi, Y. Hiraka, A. Białas, T. Langner, R. Kellner …

Dec 2, 2020
Using genomics tools to understand plant resistance against pathogens: A case study of Magnaporthe-rice interactions.

Terauchi Ryohei, Fujisaki Koki, Shimizu Motoki, Saitoh Hiromasa

Applied Plant Biotechnology for Improving Resistance to Biotic Stress., 2020 Peer-reviewed
Synthesis of infectious in vitro transcripts from cDNA clone of sikte waterborne virus isolated from Japanese gentians in Iwate Prefecture.

藤崎恒喜, 舘田知佳, 阿部善子, 岩井摩莉, 中村太紀, 岩舘康哉, 海道真典, 三瀬和之

日本植物病理学会報, 86(1), Sep, 2019 Lead author
The Relationship Between Flower Color and Disease Resistance Against Septoria gentianae in Japanese Gentian, Possible Involvement of Flavonoids and Related-compounds in Blue Pigmentation

Chika Tateda, Masahiro Nishihara, Mari Iwai, Kazue Obara, Koki Fujisaki

18th International Congress of Molecular Plant-Microbe Interactions. Glasgow, UK, Jul, 2019 Last author
A putative zinc-binding motif in the rice blast effector AVR-Pii contributes to a stable and functional conformation of the protein

Koki Fujisaki, Kentaro Yoshida, Hiromasa Saitoh, Yoshiko Abe, Juan Carlos De, la Concepcion, Mark J. Banfield, Sophien Kamoun, Ryohei Terauchi

18th International Congress of Molecular Plant-Microbe Interactions. Glasgow, UK, Jul, 2019 Lead author
リンドウの花色と葉枯病菌抵抗性との関係性

舘田知佳, 西原昌宏, 岩井摩莉, 小原和恵, 藤崎恒喜

2019 113, Mar 5, 2019 Last author
リンドウから単離されたgentian virus Aの低温依存的増殖機構の解析

藤崎恒喜, 舘田知佳, 阿部善子, 岩井摩莉, 海道真典, 三瀬和之

平成31年度日本植物病理学会大会プログラム・講演要旨予稿集, Mar, 2019 Lead author
培養リンドウを用いたリンドウこぶ症関連ウイルス（GKaV）弱毒候補株の選抜

藤崎恒喜, 岩井摩莉, 白川明日佳, 阿部善子, 小原和恵, 舘田知佳

平成30年度日本植物病理学会大会プログラム・講演要旨予稿集, Mar, 2018 Lead author
Lessons in effector and NLR biology of plant-microbe systems

Aleksandra Białas, Erin K. Zess, Juan Carlos De La Concepcion, Marina Franceschetti, Helen G. Pennington, Kentaro Yoshida, Jessica L. Upson, Emilie Chanclud, Chih-Hang Wu, Thorsten Langner …

Molecular Plant-Microbe Interactions, 31(1) 34-45, Jan 1, 2018 Peer-reviewed
An unconventional NOI/RIN4 domain of a rice NLR protein binds host EXO70 protein to confer fungal immunity

Koki Fujisaki, Yoshiko Abe, Eiko Kanzaki, Kazue Ito, Hiroe Utsushi, Hiromasa Saitoh, Aleksandra Białas, Mark Banfield, Sophien Kamoun, Ryohei Terauchi

Biorxiv, 239400 doi: https://doi.org/10.1101/2, Dec, 2017 Lead author
Rice blast resistance gene Pii is controlled by a pair of NBS-LRR genes Pii-1 and Pii-2

Hiroki Takagi, Akira Abe, Aiko Uemura, Kaori Oikawa, Hiroe Utsushi, Hiroki Yaegashi, Hideko Kikuchi, Motoki Shimizu, Yoshiko Abe, Hiroyuki Kanzaki …

Biorxiv, 227132 doi: https://doi.org/10.1101/2, Nov, 2017 Corresponding author
葉の気孔密度操作によるリンドウ葉枯病制御機構

舘田知佳, 藤崎恒喜

平成29年度日本植物病理学会大会東北部会講演要旨集, Sep, 2017 Last author

Presentations

Establishment of a large-scale plant virus infection system using low temperature-dependent virus multiplication.

Sep, 2023
リンドウの病害診断と耐病性研究

藤崎恒喜

第24回りんどう研究会, Oct 28, 2022 Invited
Basic research of plant-pathogen interactions from gentian fields

Sep, 2022 Invited
Analysis of host adaptation mechanism of Sikte waterborne virus, a novel viral pathogen of Japanese gentians.

Mar, 2022
岩手県内のリンドウから単離されたシクテウォーターボーンウイルスの遺伝子操作系の確立

藤崎恒喜, 舘田知佳, 阿部善子, 岩井摩莉, 中村太紀, 岩舘康哉, 海道真典, 三瀬和之

令和元年度日本植物病理学会東北部会, Sep, 2019
A putative zinc-binding motif in the rice blast effector AVR-Pii contributes to a stable and functional conformation of the protein

18th International Congress of Molecular Plant-Microbe Interactions. Glasgow, UK, Jul, 2019
リンドウから単離されたgentian virus Aの低温依存的増殖機構の解析

藤崎恒喜, 舘田知佳, 阿部善子, 岩井摩莉, 海道真典, 三瀬和之

平成31年度日本植物病理学会大会, Mar, 2019
培養リンドウを用いたリンドウこぶ症関連ウイルス（GKaV）弱毒候補株の選抜

藤崎恒喜, 岩井摩莉, 白川明日佳, 阿部善子, 小原和恵, 舘田知佳

平成30年度日本植物病理学会, Mar, 2018
岩手県内のリンドウから単離されたトンブスウイルスの解析

藤崎恒喜, 舘田知佳, 白川明日佳

平成29年度日本植物病理学会東北部会, Sep, 2017
イネの抵抗性因子Pii-2 のNOI/RIN4 ドメインは Pii依存的抵抗性に必要なOsExo70-F3と結合する

藤崎恒喜, 阿部善子, 神崎英子, 神崎洋之, 齋藤宏昌, 寺内良平

平成29年度日本植物病理学会, Apr, 2017
The NOI/RIN4 integrated domain of the rice NLR Pii-2 binds to OsExo70-F3, an accessory protein required for Pii-dependent resistance.

Koki Fujisaki, Yoshiko Abe, Hiromasa Saitoh, Hiroyuki Kanzaki, Hiroki Takagi, Eiko Kanzaki, Aiko Uemura, Sophien Kamoun, Ryohei Terauchi

Jul, 2016 Invited
イネいもち病菌の非病原性因子AVR-Piiの亜鉛結合モチーフはAVR-Piiの安定な機能的構造形成に必須の役割を果たす

藤崎恒喜, 吉田健太郎, 阿部善子, 神崎洋之, 斎藤宏昌, 寺内良平

平成28年度日本植物病理学会, Mar, 2016
イネ品種「ひとめぼれ」における,イネいもち病菌に対する部分抵抗性因子MID1の同定

藤崎恒喜, 阿部善子, 高木宏樹, 阿部陽, 斎藤宏昌, 寺内良平

平成27年度日本植物病理学会東北部会, Sep, 2015
イネ品種「ひとめぼれ」と「蒙古稲」の組換え自殖系統（RIL）を用いたイネいもち病菌感受性決定因子の遺伝学的解析

藤崎恒喜, 阿部善子, 高木宏樹, 阿部陽, 中馬いづみ, 寺内良平

平成27年度日本植物病理学会, Mar, 2015
イネ品種「ひとめぼれ」と「蒙古稲」間に認められるイネいもち病菌感染性決定因子の遺伝学的解析

藤崎恒喜, 阿部善子, 高木宏樹, 阿部陽, 小林光智衣, 齋藤宏昌, 中馬いづみ, 寺岡徹, 寺内良平

平成26年度日本植物病理学会, Mar, 2014
Recognition of Magnaporthe oryzae AVR-Pii effector by rice NB-LRR immune receptor Pii requires OsExo70: a guardee, decoy or helper?

Fujisaki, K, Abe, Y, Ito, A, Yoshida, K, Kanzaki, H, Saitoh, H, Kanzaki, E, Utsushi H, Yamashita, T, Kamoun, S, Terauchi, R

Aug, 2013
イネいもち病菌の非病原性因子AVR-Piiと結合するイネのOsExo70タンパク質のPii依存的抵抗性への関与

藤崎恒喜, 阿部善子, 吉田健太郎, 齋藤宏昌, 神崎洋之, Sophien Kamoun, 寺内良平

平成25年度日本植物病理学会, Mar, 2013
Biochemical analysis of a Magnaporthe oryzae avirulence factor, avrPii.

Fujisaki,K, Ito, A, Yoshida, K, Saitoh, H, Kamoun, H, Terauchi, R

New Phytologist symposium, Sep, 2012
Biochemical analysis of a Magnaporthe oryzae avirulence factor, avrPii.

Fujisaki,K, Ito, A, Yoshida, K, Saitoh, H, Kamoun, H, Terauchi, R

Jul, 2012
イネいもち病菌の非病原性因子avrPiiのエフェクター機能の解析

藤崎恒喜, 伊東明子, 吉田健太郎, 齋藤宏昌, 寺内良平

平成24年度日本植物病理学会, Mar, 2012

Professional Memberships

Research Projects

気孔侵入型病原菌による宿主の気孔密度操作を伴うシステミックな感受性誘導機構の解明

科学研究費助成事業, 基盤研究(C), 日本学術振興会, Apr, 2022 - Mar, 2025

舘田知佳, 上杉祥太, 藤崎恒喜
Rice NLR genes, their function and evolution

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (S), Japan Society for the Promotion of Science, Aug, 2020 - Mar, 2025
温度依存的ウイルス増殖を利用したウイルス感染関連因子の迅速解析実験系の確立

科学研究費助成事業, 基盤研究(C), 日本学術振興会, Apr, 2021 - Mar, 2024

藤崎恒喜
Function and evolution of rice NLR genes

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (A), Japan Society for the Promotion of Science, Apr, 2020 - Mar, 2021
Analysis of transmission mechanism of an unusual plant RNA virus and establishment of its infection system

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Japan Society for the Promotion of Science, Apr, 2018 - Mar, 2021

Fujisaki Koki
Molecular understanding of rice-Magnaporthe interactions

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (S), Japan Society for the Promotion of Science, May, 2015 - Mar, 2020

TERAUCHI Ryohei
Pii-dependent resistance, as a model to elucidate molecular mechanism of effector-triggered immunity and pathogen recognition.

Grants-in-Aid for Scientific Research, Grant-in-Aid for Young Scientists (B), Japan Society for the Promotion of Science, Apr, 2014 - Mar, 2017

Fujisaki Koki
The study of the interaction between Magnaportha effector AVR-Pik and rice HMA domain protein

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, Apr, 2014 - Mar, 2017

Kanzaki Hiroyuki, TERAUCHI Ryohei, SAITOH Hiromasa, FUJISAKI Koki, TAKEDA Takumi, ITO Kazue, KANZAKI Eiko, Kamoun Sophien, Banfield Mark, Kroj Thomas
シロイヌナズナにおける植物RNAウイルスの宿主決定機構の解明

科学研究費助成事業, 特別研究員奨励費, 日本学術振興会, 2004 - 2006

藤崎恒喜

Industrial Property Rights

特許5142247 植物ウイルス抵抗性植物の製造方法及びその利用

藤崎恒喜, 石川雅之

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