1. 1) Mure M, Acc. Chem. Res., 37, 131-139 (2004).
2. 2) Smith TA, ``Biochemistry and Physiology of Polyamines in Plants,'' eds. Slocum RD and Flores HE, CRC Press, Boca Raton, pp. 1-22 (1991).
3. 3) Suzuki Y, Hirasawa E, Yanagisawa H, and Matsuda H, ``Polyamines and Ethylene; Biochemistry, Physiology and Interaction,'' eds. Flores HE, Arteca RN, and Shannon JC, American Society of Plant Physiologists, Rockville, pp. 73-90 (1990).
4. 4) Werle E and Roewer F, Biochem. Z. Bd., 320, 298-301 (1950).
5. 5) Werle E and Roewer F, Biochem. Z. Bd., 322, 320-326 (1952).