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© 1995 Oxford University Press

OTHER

SHORT COMMUNICATION:Response of nicotianamine synthase activity to Fe-deficiency in tobacco plants as compared with barley

Kiyoko Higuchi1,3, Naoko-Kishi Nishizawa1, Hirotaka Yamaguchi1, Volker Römheld2, Horst Marschner2 and Satoshi Mori1

1Laboratory of Plant Molecular Physiology, Department of Applied Biological Chemistry, Faculty of Agriculture and Agricultural Life Sciences, The University of Tokyo Yayoi 1–1, Bunkyo-ku 113, Tokyo, Japan
2Institute of Plant Nutrition (330), The University of Hohenheim D-70593 Stuttgart, Germany

3To whom correspondence should be addressed. Fax: +81 3 3812 0544.

In vitro nicotianamine synthase activity was measured in tobacco under Fe-deficient or Fe-sufficient conditions. Its activity was not induced by Fe-deficiency, in contrast to barley roots, implying that the molecular biological regulation of nicotianamine synthase in response to Fe-deficiency may be different between tobacco and barley.

Key words: Barley, Fe-deficiency, ferric reduction, nicotianamine synthase, tobacco


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