Tatsuo Kakimoto

Summary

Affiliation: Osaka University
Country: Japan

Publications

  1. ncbi request reprint Biosynthesis of cytokinins
    Tatsuo Kakimoto
    Department of Biology, Graduate School of Science, Osaka University, Toyonaka, Osaka 560 0043, Japan
    J Plant Res 116:233-9. 2003
  2. ncbi request reprint Perception and signal transduction of cytokinins
    Tatsuo Kakimoto
    Department of Biology, Graduate School of Science, Osaka University, Machikaneyama 1 1, Toyonaka, Osaka 560 0043, Japan
    Annu Rev Plant Biol 54:605-27. 2003
  3. ncbi request reprint Identification of plant cytokinin biosynthetic enzymes as dimethylallyl diphosphate:ATP/ADP isopentenyltransferases
    T Kakimoto
    Department of Biology, Graduate School of Science, Osaka University, and Recognition and Formation, PRESTO, JST, Osaka, 560 0043, Japan
    Plant Cell Physiol 42:677-85. 2001
  4. ncbi request reprint [Cytokinin]
    Tatsuo Kakimoto
    Tanpakushitsu Kakusan Koso 47:1651-7. 2002
  5. doi request reprint The CKH2/PKL chromatin remodeling factor negatively regulates cytokinin responses in Arabidopsis calli
    Kaori Furuta
    Department of Biological Sciences, Graduate School of Science, Osaka University, Toyonaka, Osaka 560 0043 Japan
    Plant Cell Physiol 52:618-28. 2011
  6. doi request reprint Epidermal cell density is autoregulated via a secretory peptide, EPIDERMAL PATTERNING FACTOR 2 in Arabidopsis leaves
    Kenta Hara
    Department of Biological Science, Graduate School of Sciences, Osaka University, Toyonaka, Osaka, Japan
    Plant Cell Physiol 50:1019-31. 2009
  7. pmc Roles of Arabidopsis ATP/ADP isopentenyltransferases and tRNA isopentenyltransferases in cytokinin biosynthesis
    Kaori Miyawaki
    Department of Biology, Graduate School of Science, Osaka University, Toyonaka, Osaka 560 0043, Japan
    Proc Natl Acad Sci U S A 103:16598-603. 2006
  8. pmc Cytokinins are central regulators of cambial activity
    Miho Matsumoto-Kitano
    Department of Biological Sciences, Graduate School of Science, Osaka University, Toyonaka, Osaka 560 0043, Japan
    Proc Natl Acad Sci U S A 105:20027-31. 2008
  9. doi request reprint The CKH1/EER4 gene encoding a TAF12-like protein negatively regulates cytokinin sensitivity in Arabidopsis thaliana
    Minoru Kubo
    Department of Biology, Graduate School of Science, Osaka University, Toyonaka, Osaka 560 0043, Japan
    Plant Cell Physiol 52:629-37. 2011
  10. ncbi request reprint Expression of cytokinin biosynthetic isopentenyltransferase genes in Arabidopsis: tissue specificity and regulation by auxin, cytokinin, and nitrate
    Kaori Miyawaki
    Department of Biology, Graduate School of Science, Osaka University, Toyonaka, Osaka 560 0043, Japan
    Plant J 37:128-38. 2004

Collaborators

Detail Information

Publications23

  1. ncbi request reprint Biosynthesis of cytokinins
    Tatsuo Kakimoto
    Department of Biology, Graduate School of Science, Osaka University, Toyonaka, Osaka 560 0043, Japan
    J Plant Res 116:233-9. 2003
    ..The isopentenylated side chain is hydroxylated to form zeatin-type cytokinins. An alternative pathway, in which a hydroxylated side chain is directly added to the N(6) position of the adenine moiety, has also been suggested...
  2. ncbi request reprint Perception and signal transduction of cytokinins
    Tatsuo Kakimoto
    Department of Biology, Graduate School of Science, Osaka University, Machikaneyama 1 1, Toyonaka, Osaka 560 0043, Japan
    Annu Rev Plant Biol 54:605-27. 2003
    ..How phosphorelay regulate response regulators and how response regulators control downstream events are open questions and discussed in this review...
  3. ncbi request reprint Identification of plant cytokinin biosynthetic enzymes as dimethylallyl diphosphate:ATP/ADP isopentenyltransferases
    T Kakimoto
    Department of Biology, Graduate School of Science, Osaka University, and Recognition and Formation, PRESTO, JST, Osaka, 560 0043, Japan
    Plant Cell Physiol 42:677-85. 2001
    ..AtIPT4 did not exhibit the DMAPP:tRNA isopentenyltransferase activity. These results indicate that cytokinins are, at least in part, synthesized from ATP and ADP in plants...
  4. ncbi request reprint [Cytokinin]
    Tatsuo Kakimoto
    Tanpakushitsu Kakusan Koso 47:1651-7. 2002
  5. doi request reprint The CKH2/PKL chromatin remodeling factor negatively regulates cytokinin responses in Arabidopsis calli
    Kaori Furuta
    Department of Biological Sciences, Graduate School of Science, Osaka University, Toyonaka, Osaka 560 0043 Japan
    Plant Cell Physiol 52:618-28. 2011
    ..A yeast two-hybrid experiment showed protein interaction between CKH1/EER4/AtTAF12b and CKH2/PKL. These results suggest that CKH1/EER4/AtTAF12b and CKH2/PKL may act together on cytokinin-regulated genes...
  6. doi request reprint Epidermal cell density is autoregulated via a secretory peptide, EPIDERMAL PATTERNING FACTOR 2 in Arabidopsis leaves
    Kenta Hara
    Department of Biological Science, Graduate School of Sciences, Osaka University, Toyonaka, Osaka, Japan
    Plant Cell Physiol 50:1019-31. 2009
    ..Although targets of EPF1 and EPF2 are different, both EPF1 and EPF2 require common putative receptor components TOO MANY MOUTHS (TMM), ERECTA (ER), ERECTA LIKE 1 (ERL1) and ERL2 in order to function...
  7. pmc Roles of Arabidopsis ATP/ADP isopentenyltransferases and tRNA isopentenyltransferases in cytokinin biosynthesis
    Kaori Miyawaki
    Department of Biology, Graduate School of Science, Osaka University, Toyonaka, Osaka 560 0043, Japan
    Proc Natl Acad Sci U S A 103:16598-603. 2006
    ..This work clarifies the long-standing questions of the biosynthetic routes for isopentenyladenine-, tZ-, and cZ-type cytokinin production...
  8. pmc Cytokinins are central regulators of cambial activity
    Miho Matsumoto-Kitano
    Department of Biological Sciences, Graduate School of Science, Osaka University, Toyonaka, Osaka 560 0043, Japan
    Proc Natl Acad Sci U S A 105:20027-31. 2008
    ..Collectively, it can be concluded that cytokinins are important regulators of cambium development and that production of cytokinins in either the root or shoot is sufficient for normal development of both the root and shoot...
  9. doi request reprint The CKH1/EER4 gene encoding a TAF12-like protein negatively regulates cytokinin sensitivity in Arabidopsis thaliana
    Minoru Kubo
    Department of Biology, Graduate School of Science, Osaka University, Toyonaka, Osaka 560 0043, Japan
    Plant Cell Physiol 52:629-37. 2011
    ..These results suggest that the CKH1 protein regulates a set of genes involved in late signaling processes governing a range of cytokinin responses, including cell proliferation and differentiation...
  10. ncbi request reprint Expression of cytokinin biosynthetic isopentenyltransferase genes in Arabidopsis: tissue specificity and regulation by auxin, cytokinin, and nitrate
    Kaori Miyawaki
    Department of Biology, Graduate School of Science, Osaka University, Toyonaka, Osaka 560 0043, Japan
    Plant J 37:128-38. 2004
    ..They were expressed ubiquitously, with highest expression in proliferating tissues. These findings are discussed in relation to the role of cytokinins in plant development...
  11. pmc In planta functions of the Arabidopsis cytokinin receptor family
    Masayuki Higuchi
    Department of Biology, Graduate School of Science, Osaka University, Toyonaka, Osaka 560 0043, Japan
    Proc Natl Acad Sci U S A 101:8821-6. 2004
    ..These results confirm that cytokinins are a pivotal class of plant growth regulators but provide no evidence that cytokinins are required for the processes of gametogenesis and embryogenesis...
  12. pmc Auxin-inducible protein depletion system in fission yeast
    Mai Kanke
    Graduate School of Science, Osaka University, 1 1 Machikaneyama cho, Toyonaka, Osaka 560 0043, Japan
    BMC Cell Biol 12:8. 2011
    ..The aim of this work was to construct a useful and powerful protein-depletion system in Shizosaccaromyces pombe...
  13. pmc The secretory peptide gene EPF1 enforces the stomatal one-cell-spacing rule
    Kenta Hara
    Department of Biological Science, Graduate School of Sciences, Osaka University, Toyonaka, Osaka 560 0043, Japan
    Genes Dev 21:1720-5. 2007
    ..EPF1 activity is dependent on the TOO MANY MOUTHS receptor-like protein and ERECTA family receptor kinases, suggesting that EPF1 may provide a positional cue interpreted by these receptors...
  14. pmc Cytokinin receptors in sporophytes are essential for male and female functions in Arabidopsis thaliana
    Kaori Kinoshita-Tsujimura
    Department of Biological Sciences, Graduate School of Science, Osaka University, Toyonaka, Osaka, Japan
    Plant Signal Behav 6:66-71. 2011
    ..These results suggest that cytokinin receptors in the sporophyte are indispensable for anther dehiscence, pollen maturation, induction of pollen germination by the stigma, and female gametophyte formation and maturation...
  15. ncbi request reprint CKI1, a histidine kinase homolog implicated in cytokinin signal transduction
    T Kakimoto
    Department of Biology, Graduate School of Science, Osaka University, Toyonaka, Osaka 560, Japan
    Science 274:982-5. 1996
    ..CKI1 encodes a protein similar to the two-component regulators. These results suggest that CKI1 is involved in cytokinin signal transduction, possibly as a cytokinin receptor...
  16. doi request reprint An auxin-based degron system for the rapid depletion of proteins in nonplant cells
    Kohei Nishimura
    Department of Biological Sciences, Osaka University, Japan
    Nat Methods 6:917-22. 2009
    ....
  17. ncbi request reprint Identification of CRE1 as a cytokinin receptor from Arabidopsis
    T Inoue
    Department of Biology, Graduate School of Science, Osaka University, Toyonaka, Japan
    Nature 409:1060-3. 2001
    ..10), providing direct evidence that CRE1 is a cytokinin receptor. We also provide evidence that cytokinins can activate CRE1 to initiate phosphorelay signalling...
  18. pmc Functional analysis of AHK1/ATHK1 and cytokinin receptor histidine kinases in response to abscisic acid, drought, and salt stress in Arabidopsis
    Lam Son Phan Tran
    Biological Resources Division, Japan International Research Center for Agricultural Sciences, Tsukuba, Ibaraki 305 8686, Japan
    Proc Natl Acad Sci U S A 104:20623-8. 2007
    ..Last, cytokinin clearly mediates stress responses because it was required for CRE1 to function as a negative regulator of osmotic stress...
  19. ncbi request reprint A plant peptide encoded by CLV3 identified by in situ MALDI-TOF MS analysis
    Tatsuhiko Kondo
    Graduate School of Bio agricultural Sciences, Nagoya University, Chikusa, Nagoya, 464 8601, Japan
    Science 313:845-8. 2006
    ..These results suggest that the functional peptide of CLV3 is MCLV3...
  20. ncbi request reprint Cytokinins regulate a bidirectional phosphorelay network in Arabidopsis
    Ari Pekka Mähönen
    Plant Molecular Biology Laboratory, Institute of Biotechnology, University of Helsinki, Post Office Box 56, FIN 00014 Helsinki, Finland
    Curr Biol 16:1116-22. 2006
    ..In the absence of cytokinins, CRE1 removes phosphate from HPt proteins, decreasing the system phosphoload...
  21. ncbi request reprint Cytokinin signaling and its inhibitor AHP6 regulate cell fate during vascular development
    Ari Pekka Mähönen
    Plant Molecular Biology Laboratory, Institute of Biotechnology, POB 56, FI 00014, University of Helsinki, Finland
    Science 311:94-8. 2006
    ....
  22. pmc Cytokinin receptors are involved in alkamide regulation of root and shoot development in Arabidopsis
    José López-Bucio
    Instituto de Investigaciones Quimico Biologicas, Universidad Michoacana de San Nicolas de Hidalgo, Ciudad Universitaria, CP 58030 Morelia, Michoacan, Mexico
    Plant Physiol 145:1703-13. 2007
    ....
  23. ncbi request reprint AHK5 histidine kinase regulates root elongation through an ETR1-dependent abscisic acid and ethylene signaling pathway in Arabidopsis thaliana
    Ayako Iwama
    Laboratory of Molecular Microbiology, School of Agriculture, Nagoya University, Furocho, Chikusa ku, Nagoya, Japan
    Plant Cell Physiol 48:375-80. 2007
    ..Our results suggest that AHK5 His-kinase acts as a negative regulator in the signaling pathway in which ethylene and ABA inhibit the root elongation through ETR1 (an ethylene receptor)...