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Plant and Cell Physiology, 1995, Vol. 36, No. 1 197-199
© 1995

Short Communication

Effects of an Epidermal Growth Factor on Growth of Zea Primary Roots and Mesocotyls

Ryoichi Kato1, Toshiko Shimoyama1, Takashi Suzuki2, Kenko Uchida3, Tomoko H. Shinomura3 and Yoshinori Harada3

1 Biology Laboratory, Faculty of Education, Yamagata University Yamagata, 990 Japan
2 Science Laboratory, Faculty of Education, Yamagata University Yamagata, 990 Japan
3 Advanced Research Laboratory, Hitachi, Ltd. Hatoyama, Saitama, 350-03 Japan

Sections of the elongation zones of primary roots and mesocotyls of Zea mays L. were incubated with various concentrations of human epidermal growth factor (EGF). The growth rates of root sections incubated with 1,000, 100 and 10 µg liter–1 EGF were higher than that of control by 15%, 26% and 14%, respectively. The rates of mesocotyl sections incubated with 100, 10, 1.0 and 0.1µg liter–1 EGF were 23%, 31%, 24% and 22% higher than that of control.

(Received August 8, 1994; Accepted November 1, 1994)
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