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Faculty Members
Faculty of Biotechnology / Department of Bioscience Professor

Iwasaki Yukimoto

Profile Research Interest Selected Publications Social Activities Educational Activies

Profile

Date of Birth1957.7.23
AffiliationFaculty of Biotechnology / Department of Bioscience
TitleProfessor
RoomFaculty of Biotechnology514 (Extension 3514)
E-mailiwasaki at fpu.ac.jp ( at = @ )
EducationPh D.
Academic Societies

The American Society of Plant Biologist
Japanese Society of Breeding
The Japanese Society of Plant Physiologist
Japan Society for Bioscience, Biotechnology and Agrochemistry

Career

1986 -1987 :Postdoctoral fellow (University of Edinburgh)
1987 -1991: Rsearch associate,(Meijyo University)
1992 - Present: Accociate professor, Professor (Fukui Prefectural University)

Research Interest

Research FieldPlant Biochemistry
Research Summary

Study of genes regulating seed size.
Study of function of rice heterotrimeric G protein.

KeywordsRice, heterotrimeric G protein, signal transduction

Selected Publications

Utsunomiya, Y., Samejima, C., Fujisawa, Y., Kato, H. and Iwasaki, Y. Rice transgenic plants with suppressed expression of the β subunit of the heterotrimeric G protein. Plant Signaling Behavior, 7, 1-4 (2012)

Segami,S., Kono, I., Ando, T., Yano, M., Kitano,H., Miura, K..and Iwasaki, Y. Rice SMALL AND ROUND SEED5 gene encodes alpha-tubulin and regulates seed cell elongation. Rice, 5:4 (2012)

Abe, Y., Matsusita, K., Komatu, S. and Iwasaki. Y. Identification of heterotrimeric G protein α and β subunits in rice. Protein Peptide Letters, 19, 277-281 (2012)

Kato, T, Segami, S., Toriyama, M., Kono, I., Ando, T., Yano, M., Kitano, H., Miura, K. and Iwasaki, Y. Detection of QTLs for grain length from large grain rice (Oryza sativa L.). Breeding Science, 61, 269-274 (2011)

Utsunomiya, Y., Samejima, C., Takayanagi, Y., Izawa, Y., Yoshida, T., Sawada, Y., Fujisawa, Y., Kato, H. and Iwasaki, Y. Suppression of the rice heterotrimeric G protein β-subunit gene, RGB1, causes dwarfism and browning of internodes and lamina joint regions. Plant J , 67, 907-916 (2011)

Abe, Y., Mieda, K., Ando, T., Kono, I., Yano, M., Kitano, H. and Iwasaki, Y. The SMALL AND ROUND SEED1 (SRS1/DEP2) gene is involved in the regulation of seed size in rice. Genes Genetic Systems, 85, 327-339 (2010)

Kitagawa, K., Kurinami, S., Oki, K., Abe, Y., Ando, T., Kono, I., Yano, M., Kitano, H., and Iwasaki, Y. A novel kinesin 13 protein regulating rice seed length. Plant Cell Physiol., 51, 1315-1329 (2010)

Izawa, Y., Minami, M., Ohki, S.and Iwasaki Y. Expression profile of the α subunit of the heterotrimeric G protein in rice. Plant Signaling Behavior, 5, 1-3 (2010)

Izawa, Y., Takayanagi, Y., Inaba, N., Abe, Y., Minami, M., Fujisawa, Y., Kato, H., Ohki, S., Kitano, H., and Iwasaki Y. Function and expression pattern of the α subunit of the heterotrimeric G protein in rice. Plant Cell Physiol., 51, 271-281 (2010)

Abe, Y., Kitano, H., Ando, T., Kono, I., Yano, M., and Iwasaki, Y. Mapping of small and round 2 (SRS2) gene in rice. Rice Genetics Newsletter, 25, 30-31 (2010)

Hashimoto, M., Toorchi, M., Matsusita, K., Iwasaki, Y. And Komatsu, S. Proteome analysis of rice root plasma menbrare and detection of cold stress responsive protein. Proteins and Peptide Letters, 16, 685-697 (2009)

Oki, K., Inaba, N., Kitano, H., Takahashi, S., Fujisawa, Y., Kato, H. And Iwasaki, Y. Study of novel d1 alleles, defective mutants of the α subunit of heterotrimeric G-protein in rice. Genes Genetic Systems, 84, 35-42 (2009)

Oki, K., Kitagawa, K., Fujisawa, Y., Kato, H. And Iwasaki, Y. Function of the α subunit of the heterotrimeric G protein in the brassinosteroid response of rice plants. Plant Signaling Behavior, 4, 34-36 (2009)

Oki, K., Inaba, N., Kitagawa, K., Fujioka, S., Kitano, H., Fujisawa, Y., Kato, H. and Iwasaki, Y. Function of the α Subunit of Rice Heterotrimeric G Protein in Brassinosteroid Signaling. Plant Cell Physiol., 50, 161-172 (2009)

Tanabe, S., Kurinami, S., Ashikari, M., Kitano, H., and Iwasaki Y. Mapping of small and round seed 3 gene in rice. Rice Genetics Newsletter, 23, 56-58 (2007)

Tanabe, S., Mieda, K., Ashikari, M., Kitano, H., and Iwasaki Y. Mapping of small and round seed 1 gene in rice. Rice Genetics Newsletter, 23, 44-47 (2007)

Miyao, A., Iwasaki, Y., Kitano, H., Itoh, J., Maekawa, M., Murata, K., Yatou, O., Nagato, Y., and Hirochika, H. A large-scale collection of phenotypic data describing an insertional mutant population to facilitate functional analysis of rice genes. Plant Mol. Biol.,63: 625-635 (2006)

Komatsu, S., Abbasi, F., Kobori, E., Fujisawa, Y., Kato H., and Iwasaki, Y.
Proteomic analysis of rice embryo: An approach for investigating Gα protein-regulated proteins. Proteomics, 5, 3932-3941 (2005)

Oki, K., Fujisawa, Y., Kato, H. and Iwasaki, Y. Study of the constitutively active form of the alpha subunit of rice heterotrimeric G proteins. Plant Cell Physiol. 46, 381-386 (2005)

Tanabe, S., Ashikari, M., Fujioka, S., Takatsuto, S., Yoshida, S., Yano, M., Yoshimura, A., Kitano, H., Matsuoka, M., Fujisawa, Y., Kato, H., and Iwasaki, Y. A Novel Cytochrome P450 is Implicated in Brassinosteroid Biosynthesis via the Characterization of Rice Dwarf Mutant, dwarf11, with Reduced Seed Length. Plant Cell 17, 778-790 (2005)

Khan, M.M.K., Yang, S., Iwasaki, Y., Fujisawa, Y., Fukuda, H. and Komatsu, S. A gibberellin-regulated protein phosphorylated by a putative Ca2+-dependent protein kinase is G-protein mediated in rice root. Plant Cell Enviroment 28, 679-687 (2005)

Kato, C., Mizutani, T., Tamaki, H., Kumagai, H., Kamiya, T., Hirobe, A., Fujisawa, Y., Kato, H. and Iwasaki, Y. Characterization of heterotrimeric G protein complexes in rice plasma membrane. Plant J. 38,320-331 (2004)

Komatsu, S., Yang, G., Hayashi, N., Kaku, H., Uemura, K. and Iwasaki, Y. Alterations by a defect in a rice G protein alpha subunit in probenazol and pathogen-induced responses. Plant Cell Enviroment, 27, 947-957. (2004)

Iwasaki, Y., Fujisawa, Y. and Kato, H. Function of heterotrimeric G protein in gibberellin signaling. J. Plant Growth Regulation, 22, 126-133. (2003)

Yang G., Matsuoka M., Iwasaki Y. and Komatsu S. A novel brassinolide-enhanced gene identified by cDNA microarray is involved in the growth of rice. Plant Mol. Biol. 52, 843-854. (2003)

Iwata, M., Umemura, K., Teraoka, T., Usami, H., Fujisawa, Y. and Iwasaki, Y. Role of the alpha subunit of heterotrimeric G-protein in probenazole-inducing defense signaling in rice. J. Gen. Plant Pathol., 69, 83-86. (2003)

Tsukada, K., Ishizaka, M., Fujisawa, Y., Iwasaki, Y., Yamaguchi, T., Minami, E. and Shibuya, N. Rice receptor for chitin oligosaccharide elicitor does not couple to heterotrimeric G-protein: Elicitor responses of suspension cultured rice cells from Daikoku dwarf (d1) mutants lacking a functional G-protein alpha-subunit. Physiologia Plantarium, 116, 373-382. (2002)

Suharsono U., Fujisawa Y., Kawasaki T., Iwasaki Y., Satoh H. and Shimamoto K. The heterotrimeric G protein alpha subunit acts upstream of the small GTPase Rac in disease resistance of rice. Proc. Natl. Acad. Sci. USA, 99, 13307-13312. (2002)

Fujisawa, Y., Kato, H. and Iwasaki, Y. Structure and function of heterotrimeric G proteins in plants. Plant Cell Physiol., 42, 789-794 (2001)

Fujisawa, Y., Sawaki, S., Kato, H., Asahi, T. and Iwasaki, Y. Biochemical responses of rice cells to mastoparan 7, an activator of heterotrimeric G proteins. Plant Biotechnology, 18, 241-249 (2001)

Ishikawa A., Okamoto H., Iwasaki Y. and Asahi, T. A deficiency of coproporphyrinogen III oxidase causes lesion formation in Arabidopsis. Plant J. 27, 89-99 (2001)

Tanaka-Ueguchi, M., Fujisawa, Y., Kobayashi, M., Ashikari, M., Iwasaki, Y., Kitano, H. and Matsuoka M. Rice dwarf mutant, d1, which is defective in the alpha subunit of the heterotrimeric G protein, affects gibberellin signal transduction. Proc. Natl. Acad. Sci. USA, 97, 11638-11643. (2000)

Tanabe, S. B., Ashikari, M., Yano, M., Yoshimura, A., Matsuoka, M., Kitano, H., Asahi, T. and Iwasaki, Y. High resolution map of rice dwarf mutant gene, dwarf 11. Rice Genetics Newsletter, 17, 18-19 (2000)

Kato, T., Ishikawa, A., Asahi, T. and Iwasaki, Y. Molecular cloning and characterization of a cDNA for a rice Sec31p homolog. Biosci. Biotechnol. Biochem., 64, 2490-2492. (2000)

Fujisawa, Y., Kato,T., Ohki, S., Ishikawa, A., Kitano, H., Sasaki, T., Asahi,T. and Iwasaki, Y. Suppression of the heterotrimeric G protein causes abnormal morphology, including dwarfism, in rice. Proc. Natl. Acad. Sci. USA, 96, 7575-7580. (1999)

Iwasaki, Y., Kato, T., Kaido, T., Ishikawa, A. and Asahi,T. Characterization of the putative alpha subunit of a heterotrimeric G protein in rice. Plant Mol. Biol., 34, 563-572. (1997)

Ishikawa, A., Iwasaki, Y. and Asahi, T. Molecular cloning and characterization of a cDNA for the beta subunit of a G protein from rice. Plant Cell Physiol., 37, 223-228. (1996)

Ishikawa, A., Tsubouchi, H., Iwasaki, Y. and Asahi, T. Molecular cloning and characterization of cDNA for an alpha subunit of G protein from rice. Plant Cell Physiol., 36, 353-359. (1995)

Iwasaki,Y., Komano,Y., Ishikawa,A., Sasaki,T. and Asahi,T. Molecular cloning and characterization of cDNA for a protein containing seven repetitive segments of Trp-Asp amino acids repeat (WD-40 repeat) from rice. Plant Cell Physiol., 36, 505-510. (1995)

Iwasaki, Y., Komano, M. and Takabe, T. Molecular cloning of cDNA for a 17.5-kDa polypeptide, the psaL gene product, associated with cucumber Photosystem I. Biosci. Biotech. Biochem., 59, 1758-1760. (1995)

Iwasaki, Y., Ishikawa, H., Hibino, T. and Takabe, T. Characterization of genes that encode subunits of cucumber PSI complex by N-terminal sequencing. Biochim. Biophys. Acta, 1059. 141-148. (1991)

Takabe, T., Iwasaki, Y., Hibino, T. and Ando, T. Subunit composition of photosystem I complex that catalyzes light-dependent transfer of electrons from plastocyanin to ferredoxin. J. Biochem., 110, 622-627. (1991)

Iwasaki, Y., Sasaki, T. and Takabe, T. Sequencing and expression of the gene that encodes a 20-kDa polypeptide of the PSI complex from cucumber cotyledon. Plant Cell Physiol., 31, 871-879. (1990)

Takabe, T., Ishikawa, H., Iwasaki, Y. and Inoue, H. Electron transfer between plastocyanin and P700 in various types of photosystem I complex. Plant Cell Physiol., 30, 85-90. (1989)

Iwatsuki, N., Hattori, T., Iwasaki, Y., Nakano, M. and Nakamura, K. A complete length rat serum albumin cDNA clone directly identified by immunological screenig of cDNA expression library. Agric. Biol. Chem., 51, 379-384. (1987)

Kobayashi, K., Iwasaki, Y., Sasaki, T., Nakamura, K. and Asahi, T. Putative amino-terminal presequence for alpha subunit of plant mitochondrial F1ATPase deduced from the amino-terminal sequence of the mature subunit. FEBS Letters, 203, 144-148. (1986)

Nakamura, K., Iwasaki, Y. and Hattori, T. An improved Escherichia coli expression vector for the construction and identification of full-length cDNA clones. Gene, 44, 347-351. (1986)

Iwasaki, Y. and Asahi, T. Intracellular sites of the synthesis of sweet potato mitochondrial F1ATPase subunits. Plant Mol. Biol., 5, 339-346. (1985)

Iwasaki, Y., Matsuoka, M. and Asahi, T. Immunological comparisons among energy-transducing adenosine triphosphatase from higher plants with respect to the structures of their subunits. FEBS Letters, 171, 249-252. (1984)

Iwasaki, Y. and Asahi, T. Purification and characterization of the soluble form of mitochondrial adenosine triphosphatase from sweet potato. Arch. Biochem. Biophys., 227, 164-173. (1983)

Hattori, T., Iwasaki, Y., Sakajo, S.and Asahi, T. Cell-free synthesis of succinate dehydrogenase and mitochondrial adenosine triphosphatase of sweet potato. Biochem. Biophys. Res. Commun., 113, 235-240. (1983)

Educational Activies

ClassesBiochemistry I, Cell Engineering, Seminar in Bioscience, Graduation Thesis
Available Topics

Study of genes regulating seed size.
Study of function of rice heterotrimeric G protein.

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