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Plant and Cell Physiology, 1986, Vol. 27, No. 7 1263-1268
© 1986

Article

Selection of Copper and Zinc Resistant Nicotiana plumbaginifolia Cell Suspension Cultures

Isao Kishinami and Jack M. Widholm

Department of Agronomy, University of Illinois 1102 South Goodwin, Urbana, Illinois 61801, U.S.A.

Copper and zinc resistant cells of Nicotiana plumbaginifolia were selected using unmutagenized cell suspensions in medium containing normally lethal concentrations of CuSO4 or ZnSO4. Both resistances were retained for thirty cell doublings without selection pressure. The Cu resistant cells were 10-times and the Zn resistant cells were 6-times as resistant as the wild type cells. The Zn resistant cells were also somewhat resistant to AlCl3 in comparison with the wild type cells, while the Cu resistant cells were also somewhat resistant to ZnSO4 and AlCl3. The uptake of Cu by the Cu resistant cells and Zn by the Zn resistant cells was higher than that of the wild type cells.

(Received April 21, 1986; Accepted June 30, 1986)
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