フルタニ アヤコ古谷 綾子助教Ayako FURUTANI
■研究者基本情報
経歴
■研究活動情報
論文
- I- Sce I Endonuclease-Mediated Plant Genome Editing by Protein Transport through a Bacterial Type III Secretion System
Yuki Yanagawa; Kasumi Takeuchi; Masaki Endo; Ayako Furutani; Hirokazu Ochiai; Seiichi Toki; Ichiro Mitsuhara, Xanthomonas campestris is one of bacteria carrying a type III secretion system which transports their effector proteins into host plant cells to disturb host defense system for their infection. To establish a genome editing system without introducing any foreign gene, we attempted to introduce genome editing enzymes through the type III secretion system. In a test of protein transfer, X. campestris pv. campestris (Xcc) transported a considerable amount of a reporter protein sGFP-CyaA into tobacco plant cells under the control of the type III secretion system while maintaining cell viability. For proof of concept for genome editing, we used a reporter tobacco plant containing a luciferase (LUC) gene interrupted by a meganuclease I-SceI recognition sequence; this plant exhibits chemiluminescence of LUC only when a frameshift mutation is introduced at the I-SceI recognition site. Luciferase signal was observed in tobacco leaves infected by Xcc carrying an I-SceI gene which secretes I-SceI protein through the type III system, but not leaves infected by Xcc carrying a vector control. Genome-edited tobacco plant could be regenerated from a piece of infected leaf piece by repeated selection of LUC positive calli. Sequence analysis revealed that the regenerated tobacco plant possessed a base deletion in the I-SceI recognition sequence that activated the LUC gene, indicating genome editing by I-SceI protein transferred through the type III secretion system of Xcc., Multidisciplinary Digital Publishing Institute
Plants, 2020年08月20日, [査読有り] - Concomitant regulation by a LacI-Type transcriptional repressor XylR on genes involved in xylan and xylose metabolism and the type III secretion system in rice pathogen xanthomonas oryzae pv. oryzae
Yumi Ikawa; Sayaka Ohnishi; Akiko Shoji; Ayako Furutani; Seiji Tsuge, The hypersensitive response and pathogenicity (hrp) genes of Xanthomonas oryzae pv. oryzae, the causal agent of bacterial leaf blight of rice, encode components of the type III secretion system and are essential for virulence. Expression of hrp genes is regulated by two key hrp regulators, HrpG and HrpX
HrpG regulates hrpX and hrpA, and HrpX regulates the other hrp genes on hrpB-hrpF operons. We previously reported the sugar-dependent quantitative regulation of HrpX
the regulator highly accumulates in the presence of xylose, followed by high hrp gene expression. Here, we found that, in a mutant lacking the LacI-type transcriptional regulator XylR, HrpX accumulation and hrp gene expression were high even in the medium without xylose, reaching the similar levels present in the wild type incubated in the xylose-containing medium. XylR also negatively regulated one of two xylose isomerase genes (xylA2 but not xylA1) by binding to the motif sequence in the upstream region of the gene. Xylose isomerase is an essential enzyme in xylose metabolism and interconverts between xylose and xylulose. Our results suggest that, in the presence of xylose, inactivation of XylR leads to greater xylan and xylose utilization and, simultaneously, to higher accumulation of HrpX, followed by higher hrp gene expression in the bacterium., American Phytopathological Society
Molecular Plant-Microbe Interactions, 2018年06月01日, [査読有り] - Characterization of two acetyltransferase genes in the pyripyropene biosynthetic gene cluster from Penicillium coprobium
Jie Hu; Ayako Furutani; Kentaro Yamamoto; Kazuhiko Oyama; Masaaki Mitomi; Hiroyuki Anzai, Pyripyropenes potently and selectively inhibit acyl-CoA:cholesterol acyltransferase 2 (ACAT-2). Among multiple isomers of pyripyropene (A to R), pyripyropene A (PyA) has insecticidal properties in addition to its growth inhibition properties against human umbilical vein endothelial cells. Based on the predicted biosynthetic gene cluster of pyripyropene A, two genes (ppb8 and ppb9) encoding two acetyltransferases (ATs) were separately isolated and introduced into the model fungus Aspergillus oryzae, using the protoplast-polyethylene glycol method. The bioconversion of certain predicted intermediates in the transformants revealed the manner by which acetylation occurred in the biosynthetic pathway by the products expressed by these two genes (AT-1 and AT-2). The acetylated products detected by high-performance liquid chromatography (HPLC) in the extracts from AT-1 and AT-2 transformant clones were not present in the extract from the transformant clone with an empty vector. The HLPC charts of each bioconversion study exhibited high peaks at 12, 10.5 and 9min, respectively. Further ultraviolet absorption and mass spectrometry analyses identified the products as PyE, PyO and PyA, respectively. AT-1 acetylated the C-1 of deacetyl-pyripyropene E (deAc-PyE), while AT-2 played an active role in acetylating the C-11 of 11-deAc-PyO and C-7 of deAc-PyA at two different steps of the biosynthetic pathway., TAYLOR & FRANCIS LTD
BIOTECHNOLOGY & BIOTECHNOLOGICAL EQUIPMENT, 2014年09月, [査読有り] - Regulatory network of hrp gene expression in Xanthomonas oryzae pv. oryzae
Seiji Tsuge; Ayako Furutani; Yumi Ikawa, Like other plant-pathogenic bacteria, Xanthomonas oryzae pv. oryzae, the causal agent of bacterial leaf blight of rice, has hrp genes that are indispensable for its virulence. The hrp genes are involved in the construction of the type III secretion (T3S) apparatus, through which dozens of virulence-related proteins, called effectors, are directly secreted into plant cells to suppress and disturb plant immune systems and/or induce plant susceptibility genes. The expression of hrp genes is strictly regulated and induced only in plants and in certain nutrient-poor media. Two proteins, HrpG and HrpX, are known as key regulators for hrp gene expression. Great efforts by many researchers have revealed unexpectedly that, besides HrpG and HrpX, many regulators are involved in this regulation, some of which also regulate the expression of virulence-related genes other than hrp. Moreover, it has been found that HrpG and HrpX regulate not only hrp genes and effector genes but also genes unrelated to the T3S system. These findings suggest that the expression of the hrp gene is orchestrally regulated with other virulence-related genes by a complicated, sophisticated regulatory network in X. oryzae pv. oryzae., SPRINGER JAPAN KK
JOURNAL OF GENERAL PLANT PATHOLOGY, 2014年07月, [査読有り] - StoS, a Hybrid Histidine Kinase Sensor of Xanthomonas oryzae pv. oryzae, Is Activated by Sensing Low O2 Concentration and Is Involved in Stress Tolerance and Virulence.
Yumi Ikawa; Ayako Furutani; Hirokazu Ochiai; Seiji Tsuge, Bacteria have two-component signal transduction systems (TCSTS), which are important devices for receiving various environmental signals. A TCSTS generally consists of a sensor histidine kinase (HK) and a response regulator (RR) that contains a receiver domain. There are also hybrid-type HK (HyHK) that comprise a HK with a receiver domain within one molecule. In this study, we show that the deletion mutant of a HyHK XOO-0635 (StoS) of Xanthomonas oryzae pv. oryzae, the causal agent of bacterial leaf blight of rice, had decreased stress tolerance to high osmolarity, sodium, and H2O2. Growth of the StoS mutant was delayed, and viability was lower than the wild type in medium and in rice leaves. We found that StoS regulates the expression of various genes including XOO-3715, XOO-0131, and stoS itself. A domain search revealed a PAS domain with a heme pocket in StoS, implying that the HyHK functions as an O2 sensor. When the bacteria were incubated in low oxygen, the StoS-dependent expression of XOO-0131 and XOO-3715 became higher. Therefore, StoS is activated by sensing a low O2 concentration in its environs and is involved in gene expression for adapting to various stressful conditions. © 2014 The American Phytopathological Society., American Phytopathological Society
Mol Plant Microbe Interact., 2014年07月, [査読有り] - Real Time Live Imaging of Phytopathogenic Bacteria Xanthomonas campestris pv. campestris MAFF106712 in 'Plant Sweet Home'.
Akimoto-Tomiyama C; Furutani A; Ochiai H., Xanthomonas is one of the most widespread phytobacteria, causing diseases on a variety of agricultural plants. To develop novel control techniques, knowledge of bacterial behavior inside plant cells is essential. Xanthomonas campestris pv. campestris, a vascular pathogen, is the causal agent of black rot on leaves of Brassicaceae, including Arabidopsis thaliana. Among the X. campestris pv. campestris stocks in the MAFF collection, we selected XccMAFF106712 as a model compatible pathogen for the A. thaliana reference ecotype Columbia (Col-0). Using modified green fluorescent protein (AcGFP) as a reporter, we observed real time XccMAFF106712 colonization in planta with confocal microscopy. AcGFP-expressing bacteria colonized the inside of epidermal cells and the apoplast, as well as the xylem vessels of the vasculature. In the case of the type III mutant, bacteria colonization was never detected in the xylem vessel or apoplast, though they freely enter the xylem vessel through the wound. After 9 days post inoculation with XccMAFF106712, the xylem vessel became filled with bacterial aggregates. This suggests that Xcc colonization can be divided into main four steps, (1) movement in the xylem vessel, (2) movement to the next cell, (3) adhesion to the host plant cells, and (4) formation of bacterial aggregates. The type III mutant abolished at least steps (1) and (2). Better understanding of Xcc colonization is essential for development of novel control techniques for black rot., PUBLIC LIBRARY SCIENCE
PLoS One., 2014年04月, [査読有り] - XopR, a type III effector secreted by Xanthomonas oryzae pv. oryzae, suppresses microbe-associated molecular pattern-triggered immunity in Arabidopsis thaliana.
Akimoto-Tomiyama C; Furutani A; Tsuge S; Washington EJ; Nishizawa Y; Minami E; Ochiai H., Xanthomonas oryzae pv. oryzae is the causal agent of bacterial blight of rice. The XopR protein, secreted into plant cells through the type III secretion apparatus, is widely conserved in xanthomonads and is predicted to play important roles in bacterial pathogenicity. Here, we examined the function of XopR by constructing transgenic Arabidopsis thaliana plants expressing it under control of the dexamethasone (DEX)-inducible promoter. In the transgenic plants treated with DEX, slightly delayed growth and variegation on leaves were observed. Induction of four microbe-associated molecular pattern (MAMP)-specific early-defense genes by a nonpathogenic X. campestris pv. campestris hrcC deletion mutant were strongly suppressed in the XopR-expressing plants. XopR expression also reduced the deposition of callose, an immune response induced by flg22. When transiently expressed in Nicotiana benthamiana, a XopR::Citrine fusion gene product localized to the plasma membrane. The deletion of XopR in X. oryzae pv. oryzae resulted in reduced pathogenicity on host rice plants. Collectively, these results suggest that XopR inhibits basal defense responses in plants rapidly after MAMP recognition., AMER PHYTOPATHOLOGICAL SOC
Mol Plant Microbe Interact., 2012年04月, [査読有り] - Two new complete genome sequences offer insight into host and tissue specificity of plant pathogenic Xanthomonas spp.
Bogdanove AJ; Koebnik R; Lu H; Furutani A; Angiuoli SV; Patil PB; Van Sluys MA; Ryan RP; Meyer DF; Han SW 「第4著者、他33名」, Xanthomonas is a large genus of bacteria that collectively cause disease on more than 300 plant species. The broad host range of the genus contrasts with stringent host and tissue specificity for individual species and pathovars. Whole-genome sequences of Xanthomonas campestris pv. raphani strain 756C and X. oryzae pv. oryzicola strain BLS256, pathogens that infect the mesophyll tissue of the leading models for plant biology, Arabidopsis thaliana and rice, respectively, were determined and provided insight into the genetic determinants of host and tissue specificity. Comparisons were made with genomes of closely related strains that infect the vascular tissue of the same hosts and across a larger collection of complete Xanthomonas genomes. The results suggest a model in which complex sets of adaptations at the level of gene content account for host specificity and subtler adaptations at the level of amino acid or noncoding regulatory nucleotide sequence determine tissue specificity., AMER SOC MICROBIOLOGY
J Bacteriol, 2011年10月, [査読有り] - An H-NS-like protein involved in the negative regulation of hrp genes in Xanthomonas oryzae pv. oryzae.
ametani-Ikawa Y; Tsuge S; Furutani A; Ochiai H., hrp genes encode components of a type III secretion (T3S) system and play crucial roles in the pathogenicity of the rice pathogen Xanthomonas oryzae pv. oryzae (Xoo). A histone-like nucleoid-structuring (H-NS) protein binds DNA and acts as a global transcriptional repressor. Here, we investigated the involvement of an h-ns-like gene, named xrvB, in the expression of hrp genes in Xoo. Under the hrp-inducing culture condition, the expression of a key hrp regulator HrpG increased in the XrvB mutant, followed by activation of the downstream gene expression. Also, in planta, the secretion of a T3S protein (XopR) was activated by the mutation in xrvB. Gel retardation assay indicated that XrvB has DNA-binding activity, but without a preference for the promoter region of hrpG. The results suggest that XrvB negatively regulates hrp gene expression and that an unknown factor(s) mediates the regulation of hrpG expression by XrvB., WILEY-BLACKWELL
FEMS Microbiol Lett., 2011年06月, [査読有り] - Identification of novel type III secretion effectors in Xanthomonas oryzae pv. oryzae.
Furutani A; Takaoka M; Sanada H; Noguchi Y; Oku T; Tsuno K; Ochiai H; Tsuge S., Many gram-negative bacteria secrete so-called effector proteins via a type III secretion (T3S) system. Through genome screening for genes encoding potential T3S effectors, 60 candidates were selected from rice pathogen Xanthomonas oryzae pv. oryzae MAFF311018 using these criteria: i) homologs of known T3S effectors in plant-pathogenic bacteria, ii) genes with expression regulated by hrp regulatory protein HrpX, or iii) proteins with N-terminal amino acid patterns associated with T3S substrates of Pseudomonas syringae. Of effector candidates tested with the Bordetella pertussis calmodulin-dependent adenylate cyclase reporter for translocation into plant cells, 16 proteins were translocated in a T3S system-dependent manner. Of these 16 proteins, nine were homologs of known effectors in other plant-pathogenic bacteria and seven were not. Most of the effectors were widely conserved in Xanthomonas spp.; however, some were specific to X. oryzae. Interestingly, all these effectors were expressed in an HrpX-dependent manner, suggesting coregulation of effectors and the T3S system. In X. campestris pv. vesicatoria, HpaB and HpaC (HpaP in X. oryzae pv. oryzae) have a central role in recruiting T3S substrates to the secretion apparatus. Secretion of all but one effector was reduced in both HpaB(-) and HpaP(-) mutant strains, indicating that HpaB and HpaP are widely involved in efficient secretion of the effectors., AMER PHYTOPATHOLOGICAL SOC
Mol Plant Microbe Interact., 2009年01月, [査読有り] - Genome sequence and rapid evolution of the rice pathogen Xanthomonas oryzae pv. oryzae PXO99(A) (vol 9, pg 534, 2008)
Steven L. Salzberg; Daniel D. Sommer; Michael C. Schatz; Adam M. Phillippy; Pablo D. Rabinowicz; Seiji Tsuge; Ayako Furutani; Hirokazu Ochiai; Arthur L. Delcher; David Kelley; Ramana Madupu; Daniela Puiu; Diana Radune; Martin Shumway; Cole Trapnell; Gudlur Aparna; Gopaljee Jha; Alok Pandey; Prabhu B. Patil; Hiromichi Ishihara; Damien F. Meyer; Boris Szurek; Valerie Verdier; Ralf Koebnik; J. Maxwell Dow; Robert P. Ryan; Hisae Hirata; Shinji Tsuyumu; Sang Won Lee; Young-Su Seo; Malinee Sriariyanum; Pamela C. Ronald; Ramesh V. Sonti; Marie-Anne Van Sluys; Jan E. Leach; Frank F. White; Adam J. Bogdanove, BIOMED CENTRAL LTD
BMC GENOMICS, 2008年11月, [査読有り] - Genome sequence and rapid evolution of the rice pathogen Xanthomonas oryzae pv. oryzae PXO99A.
Salzberg SL; Sommer DD; Schatz MC; Phillippy AM; Rabinowicz PD; Tsuge S; Furutani A; Ochiai H; Delcher AL; Kelley D 「第7著者、他27名」, Background: Xanthomonas oryzae pv. oryzae causes bacterial blight of rice (Oryza sativa L.), a major disease that constrains production of this staple crop in many parts of the world. We report here on the complete genome sequence of strain PXO99(A) and its comparison to two previously sequenced strains, KACC10331 and MAFF311018, which are highly similar to one another.
Results: The PXO99(A) genome is a single circular chromosome of 5,240,075 bp, considerably longer than the genomes of the other strains (4,941,439 bp and 4,940,217 bp, respectively), and it contains 5083 protein-coding genes, including 87 not found in KACC10331 or MAFF311018. PXO99(A) contains a greater number of virulence-associated transcription activator-like effector genes and has at least ten major chromosomal rearrangements relative to KACC10331 and MAFF311018. PXO99(A) contains numerous copies of diverse insertion sequence elements, members of which are associated with 7 out of 10 of the major rearrangements. A rapidly-evolving CRISPR (clustered regularly interspersed short palindromic repeats) region contains evidence of dozens of phage infections unique to the PXO99(A) lineage. PXO99(A) also contains a unique, near-perfect tandem repeat of 212 kilobases close to the replication terminus.
Conclusion: Our results provide striking evidence of genome plasticity and rapid evolution within Xanthomonas oryzae pv. oryzae. The comparisons point to sources of genomic variation and candidates for strain-specific adaptations of this pathogen that help to explain the extraordinary diversity of Xanthomonas oryzae pv. oryzae genotypes and races that have been isolated from around the world., BIOMED CENTRAL LTD
BMC Genomics., 2008年05月, [査読有り] - Gene involved in transcriptional activation of the hrp regulatory gene hrpG in Xanthomonas oryzae pv. oryzae.
Tsuge S; Nakayama T; Terashima S; Ochiai H; Furutani A; Oku T; Tsuno K; Kubo Y; Kaku H., A novel regulatory gene, trh, which is involved in hrp gene expression, is identified in the plant pathogen Xanthomonas oryzae pv. oryzae. In the trh mutant, expression of HrpG, which is a key regulator for hrp gene expression, is reduced both under the in vitro hrp-inducing condition and in planta., AMER SOC MICROBIOLOGY
J Bacteriol., 2006年06月, [査読有り] - Identification of novel HrpXo regulons preceded by two cis-acting elements, a plant-inducible promoter box and a -10 box-like sequence, from the genome database of Xanthomonas oryzae pv. oryzae.
Furutani A; Nakayama T; Ochiai H; Kaku H; Kubo Y; Tsuge S., A regulatory protein HrpXo of Xanthomonas oryzae pv. oryzae, the causal agent of bacterial leaf blight of rice, is known to control the expression of hrp genes that encode components of a type III secretion system and of some effector protein genes. In this study, we screened novel HrpXo regulons from the genome database of X. oryzae pv. oryzae, searching for ORFs preceded by two predicted sequence motifs, a plant-inducible promoter box-like sequence and a -10 box-like sequence. Using a gus reporter system, nine of 15 ORF candidates were expressed HrpXo dependently. We also showed by base-substituted mutagenesis that both motifs are essential for the expression of the genes., WILEY-BLACKWELL PUBLISHING, INC
FEMS Microbiol Lett., 2006年06月, [査読有り] - Effects on promoter activity of base substitutions in the cis-acting regulatory element of HrpXo regulons in Xanthomonas oryzae pv. oryzae.
Tsuge S; Terashima S; Furutani A; Ochiai H; Oku T; Tsuno K; Kaku H; Kubo Y
J Bacteriol., 2005年04月, [査読有り] - Evidence for HrpXo-dependent expression of type II secretory proteins in Xanthomonas oryzae pv. oryzae.
Furutani A; Tsuge S; Ohnishi K; Hikichi Y; Oku T; Tsuno K; Inoue Y; Ochiai H; Kaku H; Kubo Y., Xanthomonas oryzae pv. oryzae is a causal agent of bacterial leaf blight of rice. Recently, an efficient hrp-inducing medium, XOM2, was established for this bacterium. In this medium, more than 10 proteins were secreted from the wild-type strain of X. oryzae pv. oryzae. Many of these proteins disappeared or decreased in amount in culture on XOM2 when incubated with the strain that has a mutation in the hrp regulatory gene. Interestingly, the secretory protein profile of a mutant lacking a type III secretion system (TTSS), components of which are encoded by hrp genes, was similar to that of the wild-type strain except that a few proteins had disappeared. This finding suggests that many HrpXo-dependent secretory proteins are secreted via systems other than the TTSS. By isolating mutant strains lacking a type II secretion system, we examined this hypothesis. As expected, many of the HrpXo-dependent secretory proteins disappeared or decreased when the mutant was cultured in XOM2. By determining the N-terminal amino acid sequence, we identified one of the type II secretory proteins as a cysteine protease homolog, CysP2. Nucleotide sequence analysis revealed that cysP2 has an imperfect plant-inducible-promoter box, a consensus sequence which HrpXo regulons possess in the promoter region, and a deduced signal peptide sequence at the N terminus. By reverse transcription-PCR analysis and examination of the expression of CysP2 by using a plasmid harboring a cysP2::gus fusion gene, HrpXo-dependent expression of CysP2 was confirmed. Here, we reveal that the hrp regulatory gene hrpXo is also involved in the expression of not only hrp genes and type III secretory proteins but also some type II secretory proteins., AMER SOC MICROBIOLOGY
J Bacteriol., 2004年03月, [査読有り] - Hpa1 secretion via a type III secretion system in Xanthomonas oryzae pv. oryzae
Furutani A; Tsuge, S; Oku T; Tsuno K; Inoue Y; Ochiai H; Kaku H; Kubo Y
J. Gen. Plant Pathol., 2003年, [査読有り] - Expression of Xanthomonas oryzae pv. oryzae hrp genes in XOM2, a novel synthetic medium.
Tsuge S; Furutani A; Fukunaka R; Oku T; Tsuno K; Ochiai H; Inoue Y; Kaku H; Kubo Y, To analyze the regulation of hrp expression and to detect and identify hrp-dependent secretion proteins of plant- pathogenic bacteria, an appropriate hrp-inducing medium is indispensable. In this study, two efficient hrp-inducing media for Xanthomonas oryzae pv. Oryzae were designed by assaying the expression of a hrcU (the first gene of the hrpC operon) and a gus (β-glucuronidase) fusion gene. We modified XVM2, which is a hrp-inducig medium for X. campestris pv. vesicatoria, by adding 0.01% xylose in place of fructose and sucrose (0.18 and 0.34%, respectively) as a sugar source. The resulting medium induced approximately 15-fold more GUS activity from transformants containing a hrcU :: gus gene than did XVM2. Moreover, a methionine-containing synthetic medium with 0.18% xylose as a sugar source was able to induce much stronger expression of HrcU : : GUS, with GUS activity approximately 100-fold greater than that in XVM2. Induction depended on a regulator, HrpXo, and the PIP (plant-inducible-promoter) box, suggesting that HrcU : : GUS was expressed in a hrp-dependent manner. The induction of operons hrp A to hrpF in XOM2 was also confirmed. These results suggest that both media, especially XOM2, are highly efficient hrp-inducing media for X. oryzae pv. Oryzae. (Received October 7, 2002 ; Accepted November 22, 2002), Phytopathological Society of Japan
Journal of General Plant Pathology, 2002年, [査読有り] - Growth of glucose-uptake-deficient mutant of Xanthomonas oryzae pv. oryzae in rice leaves.
Tsuge S; Nishida M; Furutani A; Kubo Y; Horino O, We isolated Xanthornonas oryzae pv. oryzae mutants deficient in the phosphoenolpyruvate : carbohydrate phosphotransferase system, a major glucose transport system in bacteria, using the glucose analogue 3-deoxy-3-fluoro-D-glucose (3FG). Glucose uptake by the mutants was decreased to 15-35% of the parental strain, and growth greatly decreased in synthetic media containing glucose as a sole sugar source. Growth of the mutants in rice leaves was, however, similar to the wild type. These findings suggest that glucose is not necessarily a major carbohydrate source for X. o. pv. oryzae in rice leaves. (Received August 11, 2000 ; Accepted December 15, 2000), Phytopathological Society of Japan
Journal of General Plant Pathology, 2001年, [査読有り] - Growth complementation of hrpXo mutants of Xanthomonas oryzae pv. oryzae by virulent strains in rice cultivars resistant and susceptible to the parental strain.
Tsuge S; Furutani A; Fukunaka R; Kubo Y; Horino O, Xanthomonas oryzae pv. oryzae (X. o. pv. oryzae) T7174 is virulent on rice cultivar IR24 and avirulent on IR-BB2. From recent reports, some virulence and avirulence factors of plant pathogenic bacteria are transferred to plant cells through the hrp-dependent type III secretion system. In this study, we investigated the involvement of hrp genes in the compatible and the incompatible interactions between rice and X. o. pv. oryzae after co-inoculation with hrpXo mutants derived from T7174 and virulent strains. Growth of the mutants, named 74ΔHrpXo and 76ΔHrpXo, was repressed in IR24 when the mutants were applied alone. However, growth of the mutants was complemented by co-inoculation with virulent strains. Growth of bioluminescent hrpXo mutant 76ΔHrpXo in IR24 and its growth in IR-BB2 after co-inoculation with T7133, which is virulent on both cultivars, was equally complemented, as detected by bioluminescence from the mutant. On the other hand, only partial complementation of growth of T7174L76, which is a bioluminescent and pathogenic derivative of T7174, by T7133 was observed in IR-BB2. Thus, growth of the hrpXo mutant of X. o. pv. oryzae was complemented by virulent strains in both susceptible and resistant rice leaves with the parental strain., Phytopathological Society of Japan
Journal of General Plant Pathology, 2001年, [査読有り] - Isolation and sequence of a gene, celDXo involved in cellobiose utilization of Xanthomonas oryzae pv. oryzae.
Tsuge S; Nishida M; Furutani A; Kubo Y; Horino O, A genomic library of Xanthomonas oryzae pv.oryzae(X.o.pv.oryzae)T7174 was screened for 4-methylumbelliferyl β-D-glucoside-hydrolyzing(MUGase)activity. In subcloning of one of the MuGase-positive clones, an approximately 4.2-kb SacI-SphI fragment conferred not only MUGase activity but also 4-methylumbelliferyl β-D-cellobioside-hydrolyzing(MUCase)activity. Sequence analysis showed that the fragment contained an ORF of 2951 bp. The conceptual ORF product was significantly homologous with 1, 4-β-D-glucan glucohydrolase D(CELD)from Pseudomonas fluorescens subsp.cellulosa, and was named CELD_. Cell fractionation experiments suggested that CELD_ is localized in the cell-envelope fraction. We constructed a CELD_ -deficient mutant(74ΔCELD)from X.o.pv.oryzae. Little MUCase activity was detected in the cell-envelope fraction prepared from the mutant. The mutant 74ΔCELD did not grow in synthetic medium containing cellobiose as the sole sugar source. On the other hand, growth in rice leaves and pathogenicity of the mutant and the parental strain did not differ. These results suggested that CELD_ is involved in cellobiose utilization of X.o.pv.oryzae but that the gene is not required for bacterial growth in rice leaves., Phytopathological Society of Japan
Journal of General Plant Pathology, 2001年, [査読有り] - Identification of a H+/glucose and galactose symporter gene glt from Xanthomonas oryzae pv. oryzae.
Tsuge S; Furutani A; Kubo Y; Horino O., We identified a glucose and galactose transporter gene from the plant-pathogenic bacterium Xanthomonas oryzae pv, oryzae, Sequence analysis indicated that the gene, named glt, encoded a polypeptide of 592 amino acid residues and the product was significantly homologous with members of the Na+/glucose cotransporter (SGLT) family from mammalian and bacterial origin, especially with vSGLT from Vibrio parahaemolyticus (50% identity). GLT functioned as a glucose and galactose transporter in an Escherichia coli mutant deficient in glucose and galactose transport activity. A protonophore inhibited the transport activity, suggesting that GLT is a H+-coupled glucose/galactose symporter., CENTER ACADEMIC PUBL JAPAN
Microbiol Immunol., 2001年, [査読有り]
MISC
- Xanthomonas属細菌が分泌するタイプIIIエフェクターXopRは植物の基礎免疫を攻撃する
秋本 千春; 古谷 綾子; 津下 誠治; 落合 弘和
日本細菌学雑誌, 2013年02月 - エフェクター研究の最先端 Xanthomonas属植物病原細菌のタイプIII分泌エフェクターXopRの機能解析
古谷 綾子; 秋本 千春; 落合 弘和; 津下 誠治
日本細菌学雑誌, 2012年02月 - アブラナ科植物黒腐病菌ATCC33913株のxopR欠失変異株の病原性への関与についての検討
沖友香; 秋本千春; 落合弘和; 津下誠治; 安西弘行; 古谷綾子
日本植物病理学会大会プログラム・講演要旨予稿集, 2012年 - イネ白葉枯病菌タイプIIIエフェクターXopRはシロイヌナズナにおける基礎的抵抗反応を抑制する
秋本千春; 古谷綾子; 古谷綾子; 津下誠治; 落合弘和
日本植物病理学会大会プログラム・講演要旨予稿集, 2011年 - イネ白葉枯病菌タイプIIIエフェクターによって発現が影響されるイネ遺伝子の解析
落合弘和; 古谷綾子; 秋本千春; 田部茂; 藤澤由紀子; 木村麻美子; 大竹祐子; 津下誠治; 南栄一
日本植物病理学会大会プログラム・講演要旨予稿集, 2010年 - (73)イネ白葉枯病菌のHpa1はタイプIII分泌機構を介して分泌される
古谷 綾子; 津下 誠治; 奥 尚; 津野 和宣; 井上 康宏; 落合 弘和; 加来 久敏; 久保 康之
日本植物病理學會報, 2003年02月25日 - (354)イネ白葉枯病菌hrpCオペロンのXOM2培地での発現 : そのHrpG,HrpXoおよびPIP-boxへの依存性(平成14年度 日本植物病理学会大会講演要旨)
福中 理絵; 津下 誠治; 古谷 綾子; 奥 尚; 津野 和宣; 落合 弘和; 加来 久敏; 久保 康之
日本植物病理學會報, 2002年08月25日
講演・口頭発表等
- ソルガム根に内生する細菌のトマト萎凋病菌に対する生育抑制効果
佐藤紗耶; 古谷綾子; 中島雅己
令和6年度 日本植物病理学会大会, 2024年03月14日 - 踏込温床コンポストのトマト青枯病に対する抑制効果
岡島護; 根本大輔; 佐藤沙耶; 古谷綾子; 中島雅己
2023年度茨城県病害虫研究会発表会, 2023年06月30日 - 〔主要な業績〕イネ白葉枯病菌の6型分泌系のエフェクターおよび免疫タンパク質の機能解析
野洲由美子・中島雅己・古谷綾子
令和5年度 日本植物病理学会大会, 2023年03月27日 - ソルガム根に内生する拮抗細菌のトマト青枯病抑制効果
山田夏菜・市川純・古谷綾子・中島雅己
令和5年度 日本植物病理学会大会, 2023年03月27日 - 〔主要な業績〕アブラナ科黒腐病菌に拮抗する葉面細菌の探索
向川こひめ・宮地 駿・中島雅己・古谷綾子
令和4年度 日本植物病理学会関東部会, 2022年09月15日 - Botrytis cinerea弱病原性株におけるカタラーゼ遺伝子の発現解析
佐藤菜々実・古谷綾子・中島雅己
令和4年度日本植物病理学会大会, 2022年03月29日 - 踏み込み温床コンポストのトマト萎凋病に対する抑制効果
根本大輔・岡島 護・西條圭祐・古谷綾子・中島雅己
令和4年度日本植物病理学会大会, 2022年03月28日 - イネ白葉枯病菌 3 型分泌機構の新規制御因子の探索
菊池真緒・中島雅己・古谷綾子
令和3年度日本植物病理学会関東部会, 2021年09月21日 - イネ白葉枯病菌の6型分泌機構は細菌間競合に関与する
田熊万奈美・宮城果奈・安西弘行・古谷綾子
平成31年度日本植物病理学会大会, 2019年03月20日, 日本植物病理学会 - 土壌から分離したStenotrophomonas属細菌によるアブラナ科野菜黒腐病の発病抑制効果についての検討
羽野愛理・安西弘行・古谷綾子
平成29年度日本植物病理学会関東部会, 2017年09月23日 - 白葉枯病菌の宿主イネへの感染時におけるリゾビトキシン生合成遺伝子ホモログの機能解析
児玉孝弘・落合弘和・安西弘行・古谷綾子
第11回日本ゲノム微生物学会年会, 2017年03月03日 - Nicotiana tabacumとN.benthamiana間の接ぎ木によるRdDMを介した発現抑制
伊藤一成・高島瞭・中島颯甫・葛西厚史・赤田辰治・原田竹雄・古谷綾子・安西弘行
日本生化学会大会, 2017年 - ヒトサイトカイン遺伝子導入イネの作出とその発現解析
松井颯、角田裕太郎、古谷綾子、安西弘行
日本生化学会大会, 2017年 - Pantoea ananatis CTB1135株のVI型分泌系は競合する細菌の増殖抑制に関与する
古谷綾子・木戸一孝・安西弘行・瀧川雄一
平成28年度日本植物病理学会大会, 2016年03月21日 - イネ白葉枯病菌タイプⅢ分泌タンパク質 XopK の機能解析
鈴木愛子・安西弘行・古谷綾子
第10回日本ゲノム微生物学会年会, 2016年03月04日 - トランスポゾン挿入により得られたアブラナ科植物黒腐病菌ATCC33913株の病原性変異株の解析
藁科昌倫・安西弘行・古谷綾子
第9回日本ゲノム微生物学会年会, 2015年03月06日 - Penicillium coprobium由来ピリピロペンA生合成遺伝子を有するイネの発現解析
柿澤夏紀・丹治有優美・古谷綾子・山本憲太朗・梅村賢司・三富正明・魚本勝人・安西弘行
第37回日本分子生物学会年会, 2014年11月 - プロベナゾール処理したイネにおけるサリチル酸生合成関連遺伝子の発現解析
佐藤ゆり・駒場麻有佳・古谷綾子・梅村賢司・山本憲太朗・三冨正明・魚本勝人・安西弘行
第37回分子生物学会年会, 2014年11月 - アブラナ科植物黒腐病菌の弱病原性トランスポゾン挿入変異株の性状解析
加治屋太貴・津下誠治・安西弘行・古谷綾子
平成26年度日本植物病理学会大会, 2014年06月03日 - プロベナゾール処理したイネにおけるサリチル酸合成関連遺伝子の発現解析
駒場麻有佳・古谷綾子・梅村賢司・山本憲太朗・三冨正明・魚本勝人・安西弘行
日本育種学会第125回講演会, 2014年03月 - Xanthomonas属植物病原細菌のタイプIII分泌エフェクターXopRの機能解析
沖友香・秋本千春・落合弘和・安西弘行・津下誠治・古谷綾子
第8回日本ゲノム微生物学会年会, 2014年 - 生物的ストレス下のダウンレギュレーションされた2つのArabidopsis葉緑体PP2Csは病原菌増殖の原因である
AKIMOTO‐TOMIYAMA Chiharu; FURUTANI Ayako; OCHIAI Hirokazu
第55回日本植物生理学会年会, 2014年 - Xanthomonas oryzae pv.oryzaeの二成分制御系因子StoSは感染植物体での増殖と生存に関与する
伊川有美、津下誠治、古谷綾子、落合弘和
平成25年度日本植物病理学会関西部会, 2014年 - イネ白葉枯病菌の新規LacI型転写制御因子はグルコース存在下においてhrp遺伝子発現の負の制御に関与する
大西紗矢佳・伊川有美・真嶋綾子・庄司明子・古谷綾子・津下誠治
平成26年度日本植物病理学会大会, 2014年 - 植物病原菌の蛋白質XopRは植物の基本的な防御応答を阻害しエチレン生合成経路を変える
AKIMOTO‐TOMIYAMA Chiharu、FURUTANI Ayako、TSUGE Seiji、OCHIAI Hirokazu
第54回日本植物生理学会年会, 2013年03月 - Xanthomonas属細菌が分泌するタイプIIIエフェクターXopRは植物の基礎免疫を攻撃する
秋本千春、古谷綾子、津下誠治、落合弘和
第86回日本細菌学会総会, 2013年03月 - 糸状菌Trichoderma reeseiに眠る生理活性物質生合成遺伝子の探索
第36回日本分子生物学会年会, 2013年 - 耐熱性シクロデキストリン合成酵素のイネにおける発現
佐藤ゆり・安瀬禎紀・石野真理・石上拓也・古谷綾子・安西弘行
第36回日本分子生物学会年会, 2013年 - Loop‐mediated isothermal amplification(LAMP)法による植物ウイルス病の簡易検定法の検討とインドネシアにおける現地利用
江口ゆみ ・篠原麻希 ・WIDIASTUTI Ani・古谷綾子・坂上伸生・佐藤達夫
日本熱帯農業学会第113回講演会, 2013年 - Xanthomonas oryzae pv.oryzaeの二成分制御系因子XOO0635は低酸素濃度を感知し病原性に関与する
平成24年度日本植物病理学会大会, 2012年03月 - イネ白葉枯病菌のLonプロテアーゼはhrp遺伝子発現の負の制御に関与する
亀谷(伊川)有美、真嶋綾子、久原侑子、古谷綾子、津下誠治
平成24年度日本植物病理学会関西部会, 2012年 - Xanthomonas属細菌感染時におけるクレードK PP2Cの発現解析
平成24年度日本植物病理学会大会, 2012年 - アブラナ科植物黒腐病菌ATCC33913株のxopR欠失変異株の病原性への関与についての検討
沖友香、秋本千春、落合弘和、津下誠治、安西弘行、古谷綾子
平成24年度日本植物病理学会大会, 2012年 - Xanthomonas oryzae pv.oryzaeの二成分制御系因子XOO0635は酸化ストレス耐性および細菌の生存に関与する
亀谷有美、古谷綾子、落合弘和、津下誠治
平成24年度日本植物病理学会大会, 2012年 - Xanthomonas属植物病原細菌のタイプIII分泌エフェクターXopRの機能解析
古谷綾子、秋本千春、落合弘和、津下誠治
第85回日本細菌学会総会, 2012年 - イネ白葉枯病菌エフェクターXopPの標的因子の同定および機能解析
石川和也、山口公志、古谷綾子、落合弘和、津下誠治、島本功、児嶋長次郎、川崎努
平成23年度日本植物病理学会関西部会, 2011年10月 - 白葉枯病菌エフェクターの新奇標的因子OsRLCKの解析
山口公志、石川和也、石濱信明、古谷綾子、落合弘和、津下誠治、島本功、吉岡博文、川崎努
平成23年度日本植物病理学会関西部会, 2011年10月 - Xanthomonas oryzae pv.oryzaeの二成分制御系因子XOO0635は低酸素濃度を感知し病原性に関与する
亀谷(伊川)有美、津下誠治、古谷綾子、落合弘和
平成23年度日本植物病理学会関西部会, 2011年10月 - Pantoea ananatis Group 1の病原性関連遺伝子の探索
松本大雪、松本洋司、丸山菜美保、古谷綾子、木戸一孝、瀧川雄一
平成23年度日本植物病理学会大会, 2011年03月 - イネ白葉枯病菌エフェクターが標的とするOsRLCKの解析
山口公志、石川和也、古谷綾子、落合弘和、津下誠治、島本功、川崎努
平成23年度日本植物病理学会大会, 2011年03月 - イネ白葉枯病菌エフェクターXopPの標的因子の機能解析
石川和也、山口公志、古谷綾子、落合弘和、津下誠治、島本功、川崎努
平成23年度日本植物病理学会大会, 2011年03月 - イネ白葉枯病菌タイプIIIエフェクターXopRはシロイヌナズナにおける基礎的抵抗反応を抑制する
秋本千春、古谷綾子、古谷綾子、津下誠治、落合弘和
平成23年度日本植物病理学会大会, 2011年03月 - Penicillium coprobium由来pyripyropene A生合成遺伝子の植物への導入
江幡辰也、HU Jie、HU Jie、山本憲太朗、尾山和彦、三冨正明、古谷綾子、安西弘行
第34回日本分子生物学会年会, 2011年 - GolSとRafS遺伝子を同時発現するテンサイ形質転換体におけるラフィノースの産生
堀内貴純、鈴木良祐、中垣良太、武石愛佳、玉掛秀人、古谷綾子、安西弘行
第34回日本分子生物学会年会, 2011年 - アグロバクテリウム法によるAspergillus oryzaeの形質転換
大河拓斗、HU Jie、古谷綾子、安西弘行
第34回日本分子生物学会年会, 2011年 - Penicillium coprobium由来のピリピロペン生合成遺伝子クラスタの2つのアセチルトランスフェラーゼ遺伝子の特性化
HU Jie、HU Jie、OKAWA Hiroto、YAMAMOTO Kentaro、OYAMA Kazuhiko、MITOMI Masaaki、FURUTANI Ayako; ANZAI Hiroyuki
第34回日本分子生物学会年会, 2011年 - イネ白葉枯病菌エフェクターXopPの標的因子の同定
石川和也、山口公志、古谷綾子、落合弘和、津下誠治、島本功、川崎努
第52回日本植物生理学会年会, 2011年 - Xanthomonas oryzae pv. oryzaeのhrp遺伝子の負の調節におけるH‐NS様蛋白質XrvBの関与
TSUGE Seiji; KAMETANI‐IKAWA Yumi; FURUTANI Ayako; OCHIAI Hirokazu
日本細菌学会総会, 2011年 - 白葉枯病菌エフェクターの標的因子OsRLCKsの同定と解析
山口公志、石川和也、古谷綾子、落合弘和、津下誠治、島本功、川崎努
第52回日本植物生理学会年会, 2011年 - イネ白葉枯病菌エフェクターを利用したイネPAMPs誘導抵抗性の解析
山口公志、古谷綾子、落合弘和、津下誠治、島本功、川崎努
平成22年度日本植物病理学会大会, 2010年04月 - Pantoea ananatis Group1がタバコに誘導する過敏感反応様反応(HR‐like reaction)の特徴
木戸一孝、古谷綾子、落合弘和、松本洋司、松本大雪、瀧川雄一
平成22年度日本植物病理学会大会, 2010年04月 - イネ白葉枯病菌タイプIIIエフェクターXopRを発現するシロイヌナズナ変異体の解析
秋本千春、古谷綾子、津下誠治、落合弘和
平成22年度日本植物病理学会大会, 2010年04月 - イネ白葉枯病菌タイプIIIエフェクターによって発現が影響されるイネ遺伝子の解析
落合弘和、古谷綾子、秋本千春、田部茂、藤澤由紀子、木村麻美子、大竹祐子、津下誠治、南栄一
平成22年度日本植物病理学会大会, 2010年04月 - イネ白葉枯病菌エフェクターXopPの標的宿主因子の探索
石川和也、山口公志、古谷綾子、落合弘和、津下誠治、島本功、川崎努
第466回日本農芸化学会関西支部講演会, 2010年 - イネ白葉枯病菌エフェクターを利用したイネ耐病性機構の解明
山口公志、石川和也、古谷綾子、落合弘和、津下誠治、島本功、川崎努
第466回日本農芸化学会関西支部講演会, 2010年 - イネいもち病菌および白葉枯病菌感染時に応答するイネ遺伝子発現解析
田部茂、藤澤由紀子、木村麻美子、古谷綾子、落合弘和、高橋章、大竹祐子、西澤洋子、南栄一
第51回植物生理学会年会, 2010年 - 白葉枯病菌エフェクターが標的とする植物免疫因子の探索
山口公志、古谷綾子、落合弘和、津下誠治、島本功、川崎努
第51回日本植物生理学会年会, 2010年 - 植物との相互作用に関与するイネ白葉枯病菌のタイプIII分泌タンパク質
津下誠治、古谷綾子、落合弘和、奥尚
第82回日本細菌学会総会, 2009年03月 - アブラナ科植物黒腐病菌の新規タイプIIIエフェクターの同定
古谷綾子、秋本千春、津下誠治、落合弘和
平成21年度日本植物病理学会大会, 2009年03月 - イネ白葉枯病菌Type IIIエフェクターの機能解析
山口公志、古谷綾子、落合弘和、津下誠治、島本功、川崎努
平成21年度日本植物病理学会大会, 2009年03月 - 病原性に関与するイネ白葉枯病菌の2つの二成分制御系遺伝子の同定
津下誠治、古谷綾子、落合弘和
平成21年度日本植物病理学会大会, 2009年03月 - 白葉枯病菌タイプIIIエフェクター導入形質転換イネの作出
古谷綾子、秋本千春、山口公志、川崎努、島本功、奥尚、津下誠治、落合弘和
平成21年度日本植物病理学会関西部会, 2009年 - イネ白葉枯病菌のタイプIIIエフェクターの病原性への関与
古谷綾子、津下誠治、高岡美菜子、眞田春美、奥尚、落合弘和
平成20年度日本植物病理学会大会, 2008年04月 - イネ白葉枯病菌のタイプⅢ分泌エフェクターの同定と性状解析
津下誠治、古谷綾子、高岡美菜子、眞田春美、奥尚、落合弘和
平成20年度日本植物病理学会大会, 2008年04月 - イネ白葉枯病菌のタイプⅢ分泌タンパク質の同定
古谷綾子、落合弘和、奥尚、津下誠治
第81回日本細菌学会総会, 2008年 - イネ白葉枯病菌におけるHrpXoに発現制御される5つの新奇エフェクター
古谷綾子、川畑真人、中山健、加来久敏、奥尚、落合弘和、津下誠治
平成19年度日本植物病理学会大会, 2007年03月 - イネ白葉枯病菌マイクロアレイの作製と遺伝子発現解析
手島光平、中山健、沼田慎一、古谷綾子、津下誠治、加来久敏、落合弘和
平成19年度日本植物病理学会大会, 2007年03月 - イネ白葉枯病菌に見出される既知エフェクターホモローグとそれらの植物細胞内への分泌
奥尚、高岡美菜子、眞田春美、南部羽蘭、古谷綾子、落合弘和、加来久敏、津下誠治
平成19年度日本植物病理学会大会, 2007年 - イネ白葉枯病菌の新奇タイプIII分泌エフェクターの同定
野口由香里、古谷綾子、落合弘和、加来久敏、久保康之、津下誠治
平成18年度日本植物病理学会大会, 2006年06月 - イネ白葉枯病菌の2成分制御遺伝子の機能解析
落合弘和、津下誠治、古谷綾子、沼田慎一、手島光平、中山健、加来久敏
平成18年度日本植物病理学会大会, 2006年06月 - イネ白葉枯病菌における新奇hrp発現制御関連遺伝子の探索
庄司明子、真嶋綾子、古谷綾子、落合弘和、加来久敏、久保康之、津下誠治
平成18年度日本植物病理学会大会, 2006年06月 - イネ白葉枯病菌におけるH‐NS様タンパク質によるhrpGの発現抑制機構
津下誠治、古谷綾子、落合弘和、加来久敏、久保康之
平成18年度日本植物病理学会大会, 2006年06月 - 変異型plant-inducible promoter boxをもつイネ白葉枯病菌のHrpXoレギュロンの同定
近藤千恵、古谷綾子、落合弘和、奥尚、津野和宣、加来久敏、久保康之、津下誠治
平成17年度日本植物病理学会, 2005年03月31日 - イネ白葉枯病菌のHpaBの病原性への関与
古谷綾子、谷口紫香子、津下誠治、奥尚、津野和宣、落合弘和、加来久敏、久保康之
平成15年度日本植物病理学会関西部会, 2003年10月18日 - イネ白葉枯病菌のHrpE1はタイプⅢ分泌機構を介して分泌される病原性因子である
古谷綾子、津下誠治、大西浩平、曵地康史、奥尚、津野和宣、井上康宏、落合弘和、加来久敏、久保康之
平成15年度日本植物病理学会大会, 2003年03月29日 - イネ白葉枯病菌のHpa1はタイプⅢ分泌機構を介して分泌される
古谷綾子、津下誠治、奥尚、津野和宣、井上康宏、落合弘和、加来久敏、久保康之
平成14年度日本植物病理学会関西部会, 2002年09月28日 - EZ::TNトランスポゾン挿入システムを用いたイネ白葉枯病菌変異株の作出
津下誠治、古谷綾子、奥尚、津野和宣、井上康宏、落合弘和、加来久敏、久保康之
平成14年度日本植物病理学会関西部会, 2002年09月28日 - イネ白葉枯病菌のhrpCオペロンのXOM2培地での発現:そのHrpG, HrpXoおよびPIP-boxへの依存性
福中理絵、津下誠治、古谷綾子、奥尚、津野和宣、落合弘和、加来久敏、久保康之
平成14年度日本植物病理学会大会, 2002年04月03日 - XOM2培地におけるイネ白葉枯病菌のhrpA, B, D, Fオペロンの発現誘導とhrpG変異によるその活性化
古谷綾子、福中理絵、津下誠治、奥尚、津野和宣、落合弘和、加来久敏、久保康之
平成14年度日本植物病理学会大会, 2002年04月03日 - イネ白葉枯病菌のin vitroにおけるhrp発現誘導条件の検討
福中理絵、古谷綾子、津下誠治、奥尚、津野和宣、久保康之
平成13年度日本植物病理学会関西部会, 2001年10月21日 - イネ白葉枯病菌のhpaP遺伝子の病原性への関与およびそのin vitroにおける発現
古谷綾子、津下誠治、奥尚、津野和宣、落合弘和、加来久敏、久保康之
平成13年度日本植物病理学会関西部会, 2001年10月21日 - イネ白葉枯病菌のβ-glucosidase遺伝子の単離と性状解析
西田真美、津下誠治、古谷綾子、久保康之、堀野修
平成13年度日本植物病理学会大会, 2001年04月03日 - イネ白葉枯病菌のhpaP変異株のイネ葉内での増殖について
古谷綾子、津下誠治、奥尚、津野和宣、落合弘和、加来久敏、久保康之、堀野修
平成13年度日本植物病理学会大会, 2001年04月03日 - イネ白葉枯病菌のグルコース吸収経路はそのイネ葉内における増殖と病原性に必須でない
古谷綾子、西田真美、津下誠治、久保康之、堀野修
平成12年度日本植物病理学会関西部会, 2000年10月12日 - イネ白葉枯病菌のNa+/glucose symporter (SglS) 様遺伝子の構造および機能解析
古谷綾子、津下誠治、久保康之、堀野修
平成12年度日本植物病理学会大会, 2000年04月03日 - 野生株との混合接種の際における白葉枯病菌hrpXo変異株の親和性・非親和性イネ葉内での増殖
古谷綾子、津下誠治、久保康之、堀野修
平成10年度日本植物病理学会関西部会, 1999年10月17日