Plant and Cell Physiology, 2000, Vol. 41, No. 7 893-897
© 2000 Oxford University Press
Effects of Ethylene Precursor and Inhibitors for Ethylene Biosynthesis and Perception on Nodulation in Lotus japonicus and Macroptilium atropurpureum
1 Institute of Genetic Ecology, Tohoku University, Katahira, Aoba-ku, Sendai, 980-8577 Japan 2 Plant Biotechnology Institute, IBARAKI Agricultural Center, Ago, Iwama, Nishi-ibaraki, 319-0292 Japan
Inhibitors of ethylene synthesis or its physiological function enhanced nodulation in Lotus japonicus and Macroptilium atropurpureum. In contrast, the application of 1-aminocyclopropane-1-carboxylic acid, a precursor of ethylene biosynthesis, reduced the nodule number in these legumes. These results suggest that an ethylene-mediated signaling pathway is involved in the nodulation process even in the determinate nodulators.
3 Corresponding author: E-mail, kiwamu@ige.tohoku.ac.jp; Fax, +81-022-217-5684.
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