Faculty Profiles - YOSHIOKA, Hirofumi

Papers - YOSHIOKA, Hirofumi

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Properties of fluctuations in two coupled chains of Luttinger liquids

Yoshioka, H; Suzumura, Y

JOURNAL OF LOW TEMPERATURE PHYSICS Vol. 106 ( 1-2 ) page： 49 - 72 1997.1

Topological dislocations and mixed state of charge density waves

Hayashi, M; Yoshioka, H

PHYSICAL REVIEW LETTERS Vol. 77 ( 16 ) page： 3403 - 3406 1996.10

A cytosolic phospholipase A2 from potato tissues appears to be patatin. Reviewed

Senda, K, Yoshioka, H, Doke, N, Kawakita, K

Plant and Cell Physiology Vol. 37 page： 347-353 1996.1

ROLES OF INTERCHAIN HOPPING IN 2 COUPLED CHAINS OF TOMONAGA MODEL

YOSHIOKA, H; SUZUMURA, Y

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN Vol. 64 ( 10 ) page： 3811 - 3825 1995.10

Suppression of the activation of chitinase and β-1,3-glucanase in pea epicotyls by eogenous suppressor from Pisam sativum. Reviewed

Nasu, K, Yoshioka, H, Ichinose, Y, Yamada, T, Oku, H, Shiraishi, T

Annals of the Phytopathological Society of Japan Vol. 61 page： 13-17 1995.1

Suppression of phenylalanine ammonia-lyase mRNA accumulation by suppressors from Phytophthora infestans. Reviewed

Yoshioka, H, Hayakawa, Y, Doke, N

Annals of the Phytopathological Society of Japan Vol. 61 ( 1 ) page： 7-12 1995

THE X-RAY TELESCOPE ON BOARD ASCA

SERLEMITSOS, PJ; JALOTA, L; SOONG, Y; KUNIEDA, H; TAWARA, Y; TSUSAKA, Y; SUZUKI, H; SAKIMA, Y; YAMAZAKI, T; YOSHIOKA, H; FURUZAWA, A; YAMASHITA, K; AWAKI, H; ITOH, M; OGASAKA, Y; HONDA, H; UCHIBORI, Y

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN Vol. 47 ( 1 ) page： 105 - 114 1995

SUPPRESSORS - DETERMINANTS OF SPECIFICITY PRODUCED BY PLANT-PATHOGENS Invited Reviewed

T SHIRAISHI, T YAMADA, K SAITOH, T KATO, K TOYODA, H YOSHIOKA, HM KIM, Y ICHINOSE, M TAHARA, H OKU

PLANT AND CELL PHYSIOLOGY Vol. 35 ( 8 ) page： 1107 - 1119 1994.12

Language：English Publishing type：Research paper (scientific journal) Publisher：JAPANESE SOC PLANT PHYSIOLOGISTS

Plant pathogens secrete suppressors that delay or prevent the host defense responses, with resultant conditioning of host cells such that they become susceptible even to avirulent or nonpathogenic microorganisms. Suppressors have been characterized as glycoproteins, glycopeptides, peptides and anionic and nonanionic glucans. A suppressor itself is non-toxic to plant cells and, thus, it can be distinguished from host-specific toxins produced by certain pathogens. Suppressors disturb fundamental functions of host plasma membranes. For example, the suppressor from a pea pathogen, Mycosphaerella pinodes, inhibits both the ATPase activity and polyphosphoinositide metabolism in pea plasma membranes, causing the temporary suppression of the signal-transduction pathway that leads to the expression of defense genes, which encode key enzymes in the biosynthetic pathway to phytoalexin. In this review, evidence for the role of suppressors in the determination of plant host-parasite specificity is summarized.

Web of Science

Race-cultivar specificity in plant fungal disease and its molecular mechanisms. Invited

Plant Cell Technology Vol. 5 ( 1 ) page： 19-27 1993

AN ENDOGENOUS SUPPRESSOR OF THE DEFENSE RESPONSE IN PISUM-SATIVUM Reviewed

K NASU, T SHIRAISHI, H YOSHIOKA, N HORI, Y ICHINOSE, T YAMADA, H OKU

PLANT AND CELL PHYSIOLOGY Vol. 33 ( 5 ) page： 617 - 626 1992.7

Language：English Publishing type：Research paper (scientific journal) Publisher：JAPANESE SOC PLANT PHYSIOLOGISTS

Healthy pea plants contain a substance, tentatively called "endogenous suppressor", which specifically suppresses the accumulation of pisatin in pea plants that is induced by treatment with CuCl2 or an elicitor from Mycosphaerella pinodes. This suppressor elicits the accumulation of phytoalexins in other legumes, such as kidney bean, soybean and cowpea. The endogenous suppressor functions to delay the accumulation of pisatin, the activation of phenylalanine ammonialyase (PAL) and the accumulation of mRNAs for PAL and chalcone synthase induced by the elicitor from M. pinodes. The substance specifically induces susceptibility to nonpathogens, such as Mycosphaerella ligulicola and M. melonis, in pea out of four species of legume tested, but the effect is not cultivar-specific. Thus, the endogenous suppressor in healthy pea plants suppresses a series of self-defense reactions and induces susceptibility in pea plants in a species-specific manner, being similar to the exogenous fungal suppressor from the pea pathogen, M. pinodes.

Web of Science

PREPARATION OF THE INFECTION COURT BY ERYSIPHE-GRAMINIS F-SP HORDEI - CUTINASE IS A COMPONENT OF THE CONIDIAL EXUDATE Reviewed

SF PASCHOLATI, H YOSHIOKA, H KUNOH, RL NICHOLSON

PHYSIOLOGICAL AND MOLECULAR PLANT PATHOLOGY Vol. 41 ( 1 ) page： 53 - 59 1992.7

REGULATION OF POLYPHOSPHOINOSITIDE METABOLISM IN PEA PLASMA-MEMBRANES BY ELICITOR AND SUPPRESSOR FROM A PEA PATHOGEN, MYCOSPHAERELLA-PINODES Reviewed

K TOYODA, T SHIRAISHI, H YOSHIOKA, T YAMADA, Y ICHINOSE, H OKU

PLANT AND CELL PHYSIOLOGY Vol. 33 ( 4 ) page： 445 - 452 1992.6

Language：English Publishing type：Research paper (scientific journal) Publisher：OXFORD UNIV PRESS

Effects of the elicitor and the suppressor from a pea pathogen, Mycosphaerella pinodes, on polyphosphoinositide metabolism in pea plasma membranes were examined in vitro. Lipid phosphorylation in the isolated pea plasma membrane was drastically stimulated by the elicitor, but markedly inhibited by the suppressor. A similar inhibitory effect was observed by the treatment with orthovanadate or K-252a that blocked pisatin production induced by the elicitor. Neomycin, an aminoglycoside antibiotic that interacts with the polyphosphoinositide metabolism, also affected the lipid phosphorylation in vitro and blocked the elicitor-induced accumulation of pisatin in vivo. These results suggest that rapid changes of polyphosphoinositide metabolism in pea plasma membranes is one of indispensable processes during the elicitation of defense responses.

Web of Science

ORTHOVANADATE SUPPRESSES ACCUMULATION OF PHENYLALANINE AMMONIA-LYASE MESSENGER-RNA AND CHALCONE SYNTHASE MESSENGER-RNA IN PEA EPICOTYLS INDUCED BY ELICITOR FROM MYCOSPHAERELLA-PINODES Reviewed

H YOSHIOKA, T SHIRAISHI, S KAWAMATA, K NASU, T YAMADA, Y ICHINOSE, H OKU

PLANT AND CELL PHYSIOLOGY Vol. 33 ( 2 ) page： 201 - 204 1992.3

Language：English Publishing type：Research paper (scientific journal) Publisher：JAPANESE SOC PLANT PHYSIOLOGISTS

Orthovanadate delayed accumulation of mRNAs encoding phenylalanine ammonia-lyase and chalcone synthase in pea epicotyls induced by an elicitor from Mycosphaerella pinodes. However, accumulation of mRNA for a putative P-type ATPase was not affected. The relationship between the ATPase and defense responses is discussed.

Web of Science

Suppression of the activation of chitinase and β-1,3-glucanase in pea epicotyls by orthonadate and a suppressor from Mycosphaerella pinodes. Reviewed

Yoshioka, H, Shiraishi, T, Yamada, T, Nasu, K, Ichinose, Y, Oku, H

Annals of the Phytopathological Society of Japan Vol. 58 ( 3 ) page： 405-410 1992

SUPPRESSOR PRODUCTION AS A KEY FACTOR FOR FUNGAL PATHOGENESIS Reviewed

T SHIRAISHI, T YAMADA, H OKU, H YOSHIOKA

MOLECULAR STRATEGIES OF PATHOGENS AND HOST PLANTS page： 151 - 162 1991

エンドウ動的遺伝子の発現機構． Invited

山田哲治, 白石友紀, 一瀬勇規, 奥八郎, 川又伸治, 田中良和, Spirasertsak, P, 安成才, 吉岡博文, 橋本忠明

生物相互間の認識機構 Vol. 27 page： 56-65 1991

SUPPRESSION OF PISATIN PRODUCTION AND ATPASE ACTIVITY IN PEA PLASMA-MEMBRANES BY ORTHOVANADATE, VERAPAMIL AND A SUPPRESSOR FROM MYCOSPHAERELLA-PINODES Reviewed

H YOSHIOKA, T SHIRAISHI, T YAMADA, Y ICHINOSE, H OKU

PLANT AND CELL PHYSIOLOGY Vol. 31 ( 8 ) page： 1139 - 1146 1990.12

Language：English Publishing type：Research paper (scientific journal) Publisher：JAPANESE SOC PLANT PHYSIOLOGISTS

A pea pathogen, Mycosphaerella pinodes, secretes both an elicitor and a suppressor for the accumulation of pisatin, a major phytoalexin of pea, into the spore germination fluid. The effects of elicitor and the suppressor on the ATPase activity in pea plasma membranes was examined. The ATPase was sensitive to orthovanadate and dicyclohexylcarbodiimide but insensitive to nitrate and azide; it was unaffected by the elicitor but was markedly inhibited by the suppressor (50-mu-g.ml-1, bovine serum albumin equivalents) or verapamil (100-mu-M). The accumulation of pisatin induced by the elicitor was delayed for 3 to 6 h in the presence of orthovanadate or verapamil to an extent similar to that in the presence of the suppressor. The relationship between the inhibition of plasma membrane ATPase activity and the suppression of the active defense reaction that involves the production of pisatin in the pea plant is discussed.

Web of Science

PREPARATION OF THE INFECTION COURT BY ERYSIPHE-GRAMINIS - DEGRADATION OF THE HOST CUTICLE Reviewed

H KUNOH, RL NICHOLSON, H YOSIOKA, N YAMAOKA, KOBAYASHI, I

PHYSIOLOGICAL AND MOLECULAR PLANT PATHOLOGY Vol. 36 ( 5 ) page： 397 - 407 1990.5

PREPARATION OF THE INFECTION COURT BY ERYSIPHE-GRAMINIS .1. CONTACT-MEDIATED CHANGES IN MORPHOLOGY OF THE CONIDIUM SURFACE Reviewed

H KUNOH, N YAMAOKA, H YOSHIOKA, RL NICHOLSON

EXPERIMENTAL MYCOLOGY Vol. 12 ( 4 ) page： 325 - 335 1988.12

PREPARATION OF THE INFECTION COURT BY ERYSIPHE-GRAMINIS .2. RELEASE OF ESTERASE ENZYME FROM CONIDIA IN RESPONSE TO A CONTACT STIMULUS Reviewed

RL NICHOLSON, H YOSHIOKA, N YAMAOKA, H KUNOH

EXPERIMENTAL MYCOLOGY Vol. 12 ( 4 ) page： 336 - 349 1988.12

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Papers - YOSHIOKA, Hirofumi