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Bradyrhizobium elkanii Induces Outer Cortical Root Swelling in Soybean |
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| Authors: | Yuhashi, Ken-Ichi Akao, Shoichiro Fukuhara, Hideyuki Tateno, Eiji Chun, Jong-Yoon Stacey, Gary Hara, Hiromichi Kubota, Masatsugu Asami, Teruo Minamisawa, Kiwamu |
| Affiliation: | 1 School of Agriculture, Ibaraki University Ami, Ibaraki, 300-03 Japan 2 National Institute of Agrobiological Resources Tsukuba, Ibaraki, 305 Japan 3 Center for Legume Research, Department of Microbiology, University of Tennessee Knoxville, 77V37996-0845, U.S.A. 4 Institute of Genetic Ecology, Tohoku University Sendai, Miyagi, 980 Japan |
| Abstract: | When soybean roots were inoculated with Bradyrhizobium elkaniiUSDA76, USDA94 or USDA31, a localized swelling of the root outercortical cells was observed within 10 days after inoculation.This phenotype was designated outer cortical swelling (OCS).OCS was not observed in roots inoculated with B.japonicum USDA110or USDA122. Therefore, the OCS response appears to be specificfor B. elkanii. To determine the involvement of the nodulationgenes in OCS formation, we constructed a nod- mutant, strainUSDA94 |
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