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The Involvement of Indole-3-Acetic Acid Produced by Bradyrhizobium elkanii in Nodule Formation |
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| Authors: | Fukuhara Hideyuki; Minakawa Yasuo; Akao Shoichiro; Minamisawa Kiwamu |
| Institution: | 1School of Agriculture, Ibaraki University Ami, Ibaraki, 300-03 Japan 2National Institute of Agrobiological Resources Tsukuba, Ibaraki, 305 Japan 3Center for Genetic Ecology, Tohoku University Sendai, Miyagi, 980 Japan |
| Abstract: | IAA-deficient mutants T10, T27 and TN3 were isolated from B.elkanii USDA 31 by spontaneous and/or N-methyl-N'-nitro-N-nitrosoguanidine(NTG) mutageneses. Inoculation with these mutants significantlyreduced the nodule number on soybean roots when compared tothat of the parent strain. Furthermore, exogenous IAA applicationrestored the nodule number of soybeans inoculated with TN3 tothe original level. (Received July 18, 1994; Accepted September 13, 1994) |
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