研究者詳細 - 一瀬　勇規

論文 - 一瀬　勇規

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Salicylic acid-dependent immunity contributes to resistance against Rhizoctonia solani, a necrotrophic fungal agent of sheath blight, in rice and Brachypodium distachyon. 査読

Kouzai Y, Kimura M, Watanabe M, Kusunoki K, Osaka D, Suzuki T, Matsui H, Yamamoto M, Ichinose Y, Toyoda K, Matsuura T, Mori IC, Hirayama T, Minami E, Noutoshi Y

New Phytologist 217 ( 2 ) 771 - 783 2018年1月

Characterization of the suppressive effects of the biological control strain VAR03-1 of Rhizobium vitis on the virulence of tumorigenic R. vitis （共著）査読

Kirara Saito, Megumi Watanabe, Hidenori Matsui, Mikihiro Yamamoto, Yuki Ichinose, Kazuhiro Toyoda, Akira Kawaguchi, Yoshiteru Noutoshi

Journal of General Plant Pathology 84 ( 1 ) 58 - 64 2018年

AefR transcription factor negatively regulates the virulence of Pseudomonas syringae pv. tomato DC3000 査読

Ishiga, T, Ishiga, Y, Kiyokawa, T, Maruyama, N, Betsuyaku, S, Ichinose, Y, Nomura, N

PHYTOPATHOLOGY 107 ( 12::S ) 83 - 83 2017年12月

Ultrastructural and Cytological Studies on Mycosphaerella pinodes Infection of the Model Legume Medicago truncatula 査読

Tomoko Suzuki, Aya Maeda, Masaya Hirose, Yuki Ichinose, Tomonori Shiraishi, Kazuhiro Toyoda

FRONTIERS IN PLANT SCIENCE 8 2017年6月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：FRONTIERS MEDIA SA

Ascochyta (Mycosphaerella) blight on cultivated peas is primarily caused by infection through asexual spores (pycnospores) of Mycosphaerella pinodes (Berk. et Blox.) Vestergren [recently renamed Peyronellaea pinodes (Berk. & A. Bloxam) Aveskamp, Gruyter & Verkley]. Using a model pathosystem involving Medicago truncatula and Mycosphaerella pinodes strain OMP-1, we examined the histology and ultrastructure of early infection events and fungal development including penetration by appressoria, vegetative growth of infection hyphae, and host responses. On the susceptible ecotype R108-1, pycnospores germinated and grew over the surface of the epidermis, then formed an appressoria and penetrated the cuticle. Beneath the cuticle, the infection peg expanded into a hyphae that grew within the outer wall of the epidermis. Subsequently, the hyphae penetrated down within mesophyll cells and proliferated vigorously, eventually, forming asexual fruiting bodies (pycnidia). In contrast, successful penetration and subsequent growth of infection hyphae were considerably restricted in the ecotype Caliph. Detected by its reaction with cerium chloride (CeCl3) to generate electron-dense cerium perhydroxides in transmission electron micrographs, hydrogen peroxide (H2O2) accumulated in epidermal and mesophyll cells of Caliph challenged with pycnospores of M. pinodes. This intracellular localization was confirmed by energydispersive X-ray spectroscopy. Our observations thus indicate that the oxidative burst reaction leading to the generation of reactive oxygen species is associated with a local host defense response in Caliph, since no clear H2O2 accumulation was detectable in susceptible R108-1. Indeed, aberrant hyphae such as intrahyphal hyphae and dead hyphae, probably due to a local defense elicited by the fungus, were abundant in Caliph but not in R108-1. Our results on the cellular interactions between the fungus and host cells provide additional insights to understand foliar infection by M. pinodes on cultivated peas.

DOI： 10.3389/fpls.2017.01132

Web of Science

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Pseudomonas syringaeの菌体密度感知機構と多剤排出ポンプの病原力における役割招待

一瀬勇規, 澤田貴博, 髙田基弘, 山本悟, 藤山友里, 中津有紀子, 田阪洋昌, 下村洪祐, 田口富美子, 松井英譲, 山本幹博, 能年義輝, 豊田和弘

植物細菌病談話会論文集 27 77 - 88 2016年8月

Expression profiling of marker genes responsive to the defence-associated phytohormones salicylic acid, jasmonic acid and ethylene in Brachypodium distachyon. 査読

Kouzai Y, Kimura M, Yamanaka Y, Watanabe M, Matsui H, Yamamoto M, Ichinose Y, Toyoda K, Onda Y, Mochida K, Noutoshi Y

BMC plant biology 16 ( 1 ) 59 2016年3月

The plant cell wall as a site for molecular contacts in fungal pathogenesis (共著) 招待査読

Kazuhiro Toyoda, Sachiyo Yao, Mai Takagi, Maki Uchioki, Momiji Miki, Kaori Tanaka, Tomoko Suzuki, Masashi Amano, Akinori Kiba, Toshiaki Kato, Hirotaka Takahashi, Yasuhiro Ishiga, Hidenori Matsui, Yoshiteru Noutoshi, Mikihiro Yamamoto, Yuki Ichinose, Tomonori Shiraishi

Physiological and Molecular Plant Pathology 95 44 - 49 2016年

Protection induced by volatile limonene against anthracnose disease in Arabidopsis thaliana. 査読

Fujioka, K, Gotoh, H, Noumi, T, Yoshida, A, Noutoshi, Y, Inagaki, Y, Yamamoto, M, Ichinose, Y, Shiraishi, T, Toyoda K

J Gen Plant Pathol 81 ( 6 ) 415 - 419 2015年

Expression of Medicago truncatula ecto-apyrase MtAPY1;1 in leaves of Nicotiana benthamiana restricts necrotic lesions induced by a virulent fungus. 査読

Toyoda K, Kawakami E, Nagai H, Shiobara-Komatsu T, Tanaka K, Inagaki Y, Ichinose Y, Shiraishi T

J Gen Plant Pathol 80 ( 3 ) 222 - 229 2014年

植物細胞壁における病原体認識・情報伝達・応答のダイナミズム

豊田和弘, 田中佳織, 稲垣善茂, 一瀬勇規, 白石友紀

日本植物病理学会報 80 ( 3 ) 146 - 151 2014年

Defects in D-Rhamnosyl Residue Biosynthetic Genes Affect Lipopolysaccharide Structure, Motility, and Cell-Surface Hydrophobicity in Pseudomonas syringae Pathovar glycinea Race 4 査読

Kazuhiro Chiku, Kazuhiko Tsunemi, Masanobu Yamamoto, Mayumi Ohnishi-Kameyama, Mitsuru Yoshida, Tadashi Ishii, Fumiko Taguchi, Masako Iwaki, Yuki Ichinose, Hiroshi Ono

BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY 77 ( 3 ) 505 - 510 2013年3月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：TAYLOR & FRANCIS LTD

D-rhamnose (D-Rha) residue is a major component of lipopolysaccharides (LPSs) in strains of the phytopathogen Pseudomonas syringae pathovar glycinea. To investigate the effects of a deficiency in GDP-D-rhamnose biosynthetic genes on LPS structure and pathogenicity, we generated three mutants defective in D-Rha biosynthetic genes, encoding proteins GDP-D-mannose 4,6-dehydratase (GMD), GDP-4-keto-6-deoxy-D-mannose reductase (RMD), and a putative alpha-D-rhamnosyltransferase (WbpZ) in P. syringae pv. glyeinea race 4. The Delta gmd, Delta rmd, and Delta wbpZ mutants had a reduced O-antigen polysaccharide consisting of D-Rha residues as compared with the wild type (WT). The swarming motility of the Delta gmd, Delta rmd, and Delta wbpZ mutant strains decreased and hydrophobicity and adhesion ability increased as compared with WT. Although the mutants had truncated O-antigen polysaccharides, and altered surface properties, they showed virulence to soybean, as WT did.

DOI： 10.1271/bbb.120736

Suppression of mRNAs for lipoxygenase (LOX), allene oxide synthase (AOS), allene oxide cyclase (AOC) and 12-oxo-phytodienoic acid reductase (OPR) in pea reduces sensitivity to the phytotoxin coronatine and disease development by Mycosphaerella pinodes. 査読

Toyoda K, Kawanishi Y, Kawamoto Y, Kurihara C, Yamagishi N, Tamura A, Yoshikawa N, Inagaki Y, Ichinose Y, Shiraishi T

J Gen Plant Pathol 79 ( 5 ) 321 - 334 2013年

岡山県の栽培圃場における植物生育促進菌の探索と同定

山際泰夫, 豊田和弘, 稲垣善茂, 一瀬勇規, 白石友紀

岡山大学農学部学術報告 102 1 - 6 2013年

記述言語：日本語掲載種別：研究論文（大学，研究機関等紀要）出版者・発行元：岡山大学農学部

A plant growth-promoting fungus was isolated from an agricultural field in Okayama Prefecture, Japan. The strain FS2, which enhanced seed germination, root elongation and leaf growth of Brassica rapa var. perviridis, was identified as Talaromyces wortmannii based on ITS1 sequence and its morphology.
本研究では，実際の生産圃場から植物生育促進菌（PGPF）の探索を試み，コマツナの生育を促進するFS2株を分離した．FS2株の形態観察並びにのITS1領域の系統樹解析から本菌をTalaromyces wortmanniiと同定した．

CiNii Article

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β-caryophylleneの植物に対する生育促進作用および耐病性増進作用の解析

山際泰夫, 豊田和弘, 稲垣善茂, 一瀬勇規, 百町満朗, 白石友紀

岡山大学農学部学術報告 102 7 - 14 2013年

記述言語：日本語掲載種別：研究論文（大学，研究機関等紀要）出版者・発行元：岡山大学農学部

A plant growth-promoting fungus, Talaromyces wortmannii strain FS2 was isolated from an agricultural field at Okayama Pref. FS2 enhanced seed germination, root elongation and leaf growth of Brassica rapa var perviridis (Komatsuna). Such plant growth-promoting effect was observed in the same sealed chamber where FS2 was cultured on PDA medium separated from seedlings, suggesting effective volatile compound(s). GC‒MS analysis showed that FS2 emitted at least seven terpenoids, of which a volatile was identified as β‒caryophyllene. β‒caryophyllene alone promoted the growth of cucumber, Nicotiana benthamiana and barley. Furthermore β‒caryophyllene increased the yield of cucumber fruits. Interestingly, we found that β‒caryophyllene conditioned these plants to be resistant to respective diseases caused by Colletotrichum orbiculare, Botrytis cinerea or Blumeria graminis f. sp hordei. The findings indicate that β‒caryophyllene has desirable dual features and therefore, it is available to cultivation of many crops.
岡山県総社市の圃場から分離した植物生育促進菌Talaromyces wortmannii FS2が生産するβ-caryophylleneは，コマツナ（アブラナ科）のみならず，キュウリ（ウリ科），タバコ（ナス科）およびオオムギ（イネ科）など広汎な植物に対して，生育促進作用および耐病性増進作用を示したことから，有用な農業資材として利用可能であるものと考察した．

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The Medicago truncatula-Mycoshaerella pinodes interaction: a new pathosystem for dissecting the fungal suppressor-mediated plant disease susceptibility in plants. 査読

Toyoda K, Ikeda S, Morikawa J, Hirose M, Maeda A, Suzuki T, Inagaki Y, Ichinose Y, Shiraishi T

J Gen Plant Pathol, 79 ( (1) ) 1 - 11 2013年

Plant cell walls as suppliers of potassium and sodium ions for induced resistance of pea (Pisum sativum L.) and cowpea (Vigna ungiculata L.). 査読

Amano M, Toyota K, Kiba A, Inagaki Y, Ichinose Y, Shiraishi T

J Gen Plant Pathol, 79 ( (1) ) 12 - 17 2013年

Infection-inhibition activity of avenacin saponins against the cereal pathogens Blumeria graminis f.sp. hordei, Bipolaris oryzae, and Magnaporthe oryzae. 査読

Inagaki Y, Noutoshi Y, Fujita K, Imaoka A, Arase S, Toyoda K, Shiraishi T, Ichinose Y

J Gen Plant Pathol, 79 ( (1) ) 69 - 73 2013年

Identification of natural diterpenes that inhibit bacterial wilt disease in Tobacco, Tomato and Arabidopsis 査読

Shigemi Seo, Kenji Gomi, Hisatoshi Kaku, Hiroshi Abe, Hideharu Seto, Shingo Nakatsu, Masahiro Neya, Michie Kobayashi, Kazuhiro Nakaho, Yuki Ichinose, Ichiro Mitsuhara, Yuko Ohashi

Plant and Cell Physiology 53 ( 8 ) 1432 - 1444 2012年8月

掲載種別：研究論文（学術雑誌）

The soil-borne bacterial pathogen Ralstonia solanacearum invades a broad range of plants through their roots, resulting in wilting of the plant, but no effective protection against this disease has been developed. Two bacterial wilt disease-inhibiting compounds were biochemically isolated from tobacco and identified as sclareol and cis-abienol, labdane-type diterpenes. When exogenously applied to their roots, sclareol and cis-abienol inhibited wilt disease in tobacco, tomato and Arabidopsis plants without exhibiting any antibacterial activity. Microarray analysis identified many sclareol-responsive genes in Arabidopsis roots, including genes encoding or with a role in ATP-binding cassette (ABC) transporters, and biosynthesis and signaling of defense-related molecules and mitogen-activated protein kinase (MAPK) cascade components. Inhibition of wilt disease by sclareol was attenuated in Arabidopsis mutants defective in the ABC transporter AtPDR12, the MAPK MPK3, and ethylene and abscisic acid signaling pathways, and also in transgenic tobacco plants with reduced expression of NtPDR1, a tobacco homolog of AtPDR12. These results suggest that multiple host factors are involved in the inhibition of bacterial wilt disease by sclareol-related compounds. © The Author 2012. Published by Oxford University Press on behalf of Japanese Society of Plant Physiologists.

DOI： 10.1093/pcp/pcs085

Scopus

PubMed

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Characterization of each aefR and mexT mutant in Pseudomonas syringae pv. tabaci 6605. 査読

Kawakita Y, Taguchi F, Inagaki Y, Toyoda K, Shiraishi T, Ichinose Y

Mol. Genet. Genomics 287 ( 6 ) 473 - 484 2012年

H2O2 production by copper amine oxidase, a component of the ecto-apyrase (ATPase)-containing protein complex(es) in the pea cell wall, is regulated by an elicitor and a suppressor from Mycosphaerella pinodes. 査読

Toyoda K, Yasunaga E, Niwa M, Ohwatari Y, Nakashima A, Inagaki Y, Ichinose Y, Shiraishi T

J Gen Plant Pathol, 78 ( (5) ) 311 - 315 2012年

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