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  1. No Access

    Article

    Low-Distortion Sinewave Generation Method Using Arbitrary Waveform Generator

    This paper describes algorithms for generating a low-distortion single-tone signal, for testing ADCs, using an arbitrary waveform generator (AWG). The AWG consists of DSP (or waveform memory) and DAC, and the ...

    Kazuyuki Wakabayashi, Keisuke Kato, Takafumi Yamada… in Journal of Electronic Testing (2012)

  2. No Access

    Article

    Changes in the transcript levels of microtubule-associated protein MAP65-1 during reorientation of cortical microtubules in azuki bean epicotyls

    The relation between orientation of cortical microtubules and the transcript levels of a 65 kDa microtubule-associated protein (VaMAP65-1) was investigated along epicotyls of azuki bean (Vigna angularis) seedling...

    Kouichi Soga, Toshihisa Kotake, Kazuyuki Wakabayashi… in Acta Physiologiae Plantarum (2012)

  3. No Access

    Article

    Transient increase in the transcript levels of γ-tubulin complex genes during reorientation of cortical microtubules by gravity in azuki bean (Vigna angularis) epicotyls

    By hypergravity treatment, the percentage of cells with transverse microtubules was decreased, while that with longitudinal microtubules was increased in azuki bean (Vigna angularis) epicotyls. The expression of ...

    Kouichi Soga, Toshihisa Kotake, Kazuyuki Wakabayashi… in Journal of Plant Research (2008)

  4. No Access

    Article

    Hypergravity induces reorientation of cortical microtubules and modifies growth anisotropy in azuki bean epicotyls

    We examined the changes in the orientation of cortical microtubules during the hypergravity-induced modification of growth anisotropy (inhibition of elongation growth and promotion of lateral growth) in azuki ...

    Kouichi Soga, Kazuyuki Wakabayashi, Seiichiro Kamisaka, Takayuki Hoson in Planta (2006)

  5. No Access

    Article

    Cellular basis for the automorphic curvature of rice coleoptiles on a three-dimensional clinostat: possible involvement of reorientation of cortical microtubules

    Coleoptiles of rice (Oryza sativa L.) show a spontaneous (automorphic) curvature toward the caryopsis under microgravity conditions. The possible involvement of the reorientation of cortical microtubules in autom...

    Mizue Saiki, Hiroshi Fujita, Kouichi Soga… in Journal of Plant Research (2005)

  6. No Access

    Article

    Cell wall changes involved in the automorphic curvature of rice coleoptiles under microgravity conditions in space

    Seedlings of rice (Oryza sativa L. cv. Koshihikari and cv. Tan-ginbozu) were cultivated on board the Space Shuttle STS-95 mission and changes in the morphology and the cell wall properties of coleoptiles were ana...

    Takayuki Hoson, Kouichi Soga, Ryuji Mori, Mizue Saiki… in Journal of Plant Research (2004)

  7. No Access

    Article

    Graviperception in growth inhibition of plant shoots under hypergravity conditions produced by centrifugation is independent of that in gravitropism and may involve mechanoreceptors

    Hypergravity caused by centrifugation inhibits elongation growth of shoots by decreasing the cell wall extensibility via suppression of xyloglucan breakdown as well as by the thickening of cell walls. The mech...

    Kouichi Soga, Kazuyuki Wakabayashi, Seiichiro Kamisaka, Takayuki Hoson in Planta (2004)

  8. No Access

    Article

    Growth and cell wall changes in rice roots during spaceflight

    We analyzed the changes in growth and cell wall properties of roots of rice (Oryza sativa L. cv. Koshihikari) grown for 68.5, 91.5, and 136 h during the Space Shuttle STS-95 mission. In space, most of rice roots ...

    Takayuki Hoson, Kouichi Soga, Kazuyuki Wakabayashi, Seiichiro Kamisaka… in Plant and Soil (2003)

  9. No Access

    Chapter

    Growth and cell wall changes in rice roots during spaceflight

    We analyzed the changes in growth and cell wall properties of roots of rice (Oryza sativa L. cv. Koshihikari) grown for 68.5, 91.5, and 136 h during the Space Shuttle STS-95 mission. In space, most of rice roots ...

    Takayuki Hoson, Kouichi Soga… in Roots: The Dynamic Interface between Plant… (2003)

  10. No Access

    Article

    Effects of temperature on the cell wall and osmotic properties in dark-grown rice and azuki bean seedlings

    The mechanism inducing the difference in growth rate under various temperature (10–50 °C) conditions was analyzed using rice and azuki bean seedlings. The growth rate of rice coleoptiles and azuki bean epicot...

    Yukiko Nakamura, Kazuyuki Wakabayashi, Seiichiro Kamisaka… in Journal of Plant Research (2002)

  11. No Access

    Article

    Stimulation of elongation growth and xyloglucan breakdown in Arabidopsis hypocotyls under microgravity conditions in space

    Seedlings of Arabidopsis thaliana (L.) Heynh. (ecotype Columbia and an ethylene-resistant mutant etr1-1) were cultivated for 68.5, 91.5 and 136 h on board during the Space Shuttle STS-95 mission, and changes in ...

    Kouichi Soga, Kazuyuki Wakabayashi, Seiichiro Kamisaka, Takayuki Hoson in Planta (2002)

  12. No Access

    Article

    Changes in Cell Wall Polysaccharides During Fruit Ripening

    Kazuyuki Wakabayashi in Journal of Plant Research (2000)

  13. No Access

    Article

    Morphogenesis of Rice and Arabidopsis Seedlings in Space

    L.) and Arabidopsis (A. thaliana L.) were cultivated for 68.5 hr in the RICE experiment on board during Space Shuttle STS-95 mission, and changes in their growth and morphology were analyzed. Microgravity in spa...

    Takayuki Hoson, Kouichi Soga, Ryuji Mori, Mizue Saiki… in Journal of Plant Research (1999)

  14. No Access

    Article

    Increased Molecular Mass of Hemicellulosic Polysaccharides is Involved in Growth Inhibition of Maize Coleoptiles and Mesocotyls under Hypergravity Conditions

    mays L. cv. Cross Bantam T51) coleoptiles and mesocotyls was suppressed by hypergravity at 30 g and above. Acceleration at 300 g significantly decreased the mechanical extensibility of cell walls of both organs....

    Kouichi Soga, Keita Harada, Kazuyuki Wakabayashi… in Journal of Plant Research (1999)

  15. No Access

    Article

    Suppression of cell wall stiffening along coleoptiles of wheat (Triticum aestivum L.) seedlings grown under osmotic stress conditions

    Effects of polyethylene glycol (PEG)-induced osmotic stress on the mechanical properties of cell walls and the levels of their components were investigated along intact wheat (Triticum aestivum L.) coleoptiles. S...

    Kazuyuki Wakabayashi, Takayuki Hoson, Seiichiro Kamisaka in Journal of Plant Research (1997)