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Plant and Cell Physiology, 2001, Vol. 42, No. 10 1169-1173
© 2001 Oxford University Press

Chalcone Isomerase Isozymes with Different Substrate Specificities towards 6'-Hydroxy- and 6'-Deoxychalcones in Cultured Cells of Glycyrrhiza echinata, a Leguminous Plant Producing 5-Deoxyflavonoids

Yuuki Kimura, Toshio Aoki and Shin-ichi Ayabe1

Department of Applied Biological Sciences, Nihon University, Fujisawa, Kanagawa, 252-8510 Japan

Three chalcone isomerase isozymes in Glycyrrhiza echinata (Fabaceae) were separated by chromatofocusing and partially purified to examine their substrate specificities. Two isozymes, one of which was elicitor-inducible, acted on both 6'-hydroxychalcone and 6'-deoxychalcone and presumably are involved in the legume-specific 5-deoxyflavonoid pathway, while another acted on only 6'-hydroxychalcone.

1 Corresponding author: E-mail, ayabe@brs.nihon-u.ac.jp; Fax, +81-466-80-1141.


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