Trehalose Changes Hydraulic Conductance of Tissue-cultured Soybean Embryos.

DOI Web Site 被引用文献6件 参考文献26件
  • IKEDA Takashi
    Plant Biophysics/Biochemistry Research Laboratory, College of Agriculture, Ehime University
  • IWAYA-INOUE Mari
    Laboratoly of Horticultural Science, Department of Plant Resources, Division of Bioresource and Bioenvironmental Sciences, Graduate School, Kyushu University
  • FUKUYAMA Toshio
    Plant Biophysics/Biochemistry Research Laboratory, College of Agriculture, Ehime University
  • NONAMI Hiroshi
    Plant Biophysics/Biochemistry Research Laboratory, College of Agriculture, Ehime University

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The hydraulic properties of tissue-cultured soybean (Glycine max [L.] Merr.) embryos grown on trehalose-containing culture media were investigated. Water potentials of culture media ranged from -0.13 to -0.65MPa when sucrose and/or trehalose concentrations were altered. The wall extensibility was greatly larger than hydraulic conductance, and the size of the effective turgor was much smaller than that of the growth-induced water potential, indicating that hydraulic conductance and the growth-induced water potential were predominantly regulating growth of soybean embryos under tissue culture conditions. The hydraulic conductance of soybean embryos grown on trehalose-containing media became smaller than that in sucrose-containing media. When both sucrose and trehalose were added to the culture media, the hydraulic conductance became an intermediate between only sucrose-containing and only trehalose-containing treatments. It is suggested that trehalose might reduce hydraulic conductance in soybean embryos, resulting in growth retardation of soybean embryos.

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