Growth Regulation Research Group

Group Director
Yuji KAMIYA (D.Agr.)
(1,2) It is important to know the localization and transport of plant hormones to understand the regulation of plant growth. We have developed a high-resolution plant hormone analysis system. We have analyzed unstable auxin intermediates by LC-MS and identified the main auxin biosynthesis pathway in plants. The pathway was so far unknown for 60 years. (3) Isolation and identification of new growth regulators from plants and microorganisms and study the roles of these chemicals in plants. (4) There are a couple of environmentally friendly agrochemicals whose mode of actions are still unknown. Using FOX lines of Arabidopsis, we will reveal the mode of actions of these chemicals.
- Identification of the main auxin pathway in plants.
- Improvement of comprehensive and high-sensitive plant hormone analyses.
- Development of new methods for analysis of novel bioactive compounds and their intermediates and metabolites.
- Development of new agrochemicals and study on their mode of action.
- October 25, 2011
- Researchers clarify main auxin biosynthesis pathway
- May 11, 2011
- Plant Steroid Hormone Receptor Is Recycled
- September 6, 2010
- New plant hormone functions offer solutions for parasitic weeds
- Mashiguchi, K., Tanaka, K., Sakai, T., Sugawara, S., Kawaide, H., Ntasume, M., Hanada, A., Yaeno, T., Shirasu, K., Yao, H., McSteen, P., Zaho, Y., Hayashi, K., Kamiya, Y., Kasahara, H.:
" The main biosynthetic pathway of auxin in Arabidopsis "
Proc. Nat. Acad. Sci., USA 108, 18512-18517 (2011) - Won, C., Shen, X., Mashiguchi, K., Zheng, Z., Whitten, R., Kasahara, H., Dai, X., Cheng, Y., Kamiya, Y., Chory, J., Dubois, J., Zaho, Y.:
" Conversion of tryptophan to indole-3-acetic acid by TAAs and YUCs in Arabidopsis."
Proc. Natl. Acad. Sci., USA 108, 18518-18523 (2011) - Suzuki, A., Suriyagoda, L., Shigeyama, T., Tominaga, A., Sasaki, M., Hiratsuka, Y., Yoshinaga, A., Arima, S., Agrie, S., Sakai, T., Inada, S., Jikumaru, Y., Kamiya, Y., Uchiumi, T., Abe, M., Hashiguchi, M., Akashi, R., Sato, S., Kaneko, T., Tabata, S., Hrsch, A.M.:
" Lotus japonica nodulation is photomorphogenetically controlled by sensing the R/FR ratio through JA signaling."
Proc. Nat. Acad. Sci., USA 108, 16837-16842 (2011) - Asahina, M., Azuma, K., Pitaksaringkarn, W., Yamazaki, T., Mitsuda, N., Ohme-Takagi, M., Yamaguchi, S., Kamiya, Y., Nambara, E., Okada, K., Nishimura, T., Koshiba, T., Yokota, T., Kamada, H., Satoh, S.:
" Spatially selective hormonal control of RAP2.6L and ANAC071 transcription factors involved in tissue reunion in Arabidopsis"
Proc. Nat. Acad. Sci., USA 108, 16128-16132 (2011) - Wu, G., Wang, X., Li, X., Kamiya, Y., Otegui, MS., Chory, J.:
" Methylation of a Phospahatase Specifies Dephosphorylation and Degradation of Activated Brassinosteroid Receptors."
Science Signaling. 4, ra29. (2011) - Zhang, Z.L., Ogawa, M., Fleet, C. M., Zentella, R., Hu, J., Heo, J.O., Lim, J., Kamiya, Y., Yamaguchi, S., Sun, T.P.:
" SCARECROW-LIKE 3 promotes gibberellin signaling by antagonizing DELLA in Arabidopsis."
Proc. Nat. Acad. Sci., USA 108, 2160-2165 (2011) - Tsuchiya, Y., Vidaurre, D., Toh, S., Hanada, A., Nambara, E., Kamiya, Y., Yamaguchi, S., McCourt, P.
" A samll molecule screen identifies new functions for the plant hormone strigolactones"
Nature Chemical Biology, 6, 741-749 (2010) - Yoshimoto, K., Jikumaru, Y., Kamiya, Y., Kusano, M., Consonni, C., Panstruga, R., Ohsumi, Y., Shirasu, K.:
" Plant autophagy negatively regulates cell death by controlling NPR1-dependent salicylic acid signaling during senesence and innate immune response."
Plant Cell 21, 2914-2927 (2009) - Sugawara, S., Hishiyama, S., Jikumaru, Y., Hanada, A., Koshiba, T., Cheng, Y., Zaho, Y., Kamiya, Y. and Kasahara, H.:
" Biochemical analyses of the indole-3-acetaldoxyme-dependent auxin biosynthesis in Arabidopsis"
Proc. Natl. Acad. Sci. USA, 106, 5430-5435 (2009) - Umehara, M., Hanada, A., Yoshida, S., Akiyama, K., Arite, T., Takeda-Kamiya, N., Magome, H., Kamiya, Y., Shirasu, K., Yoneyama, K., Kyozuka, J. and Yamaguchi, S.:
" Inhibition of shoot branching by new terpenoids plant hormones."
Nature 455, 195-200 (2008)
Principal Investigator
- Yuji KAMIYA
- Group Director
Members
- Hiroyuki KASAHARA
- Senior Research Scientist
- Yusuke JIKUMARU
- Research Scientist
- Atsuko KINOSHITA
- Special Postdoctoral Researcher
- Kiyoshi MASHIGUCHI
- Postdoctoral Researcher
- Keita TANAKA
- Junior Research Associate
- Yasutaka CHIBA
- Junior Research Associate
- Yumiko TAKEBAYASHI
- Technical Staff