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The Type III Secretion System of Bradyrhizobium japonicum USDA122 Mediates Symbiotic Incompatibility with Rj2 Soybean Plants |
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| Authors: | Takahiro Tsukui Shima Eda Takakazu Kaneko Shusei Sato Shin Okazaki Kaori Kakizaki-Chiba Manabu Itakura Hisayuki Mitsui Akifumi Yamashita Kimihiro Terasawa Kiwamu Minamisawa |
| Affiliation: | aGraduate School of Life Sciences, Tohoku University, Sendai, Japan;bFaculty of Engineering, Kyoto Sangyo University, Kyoto, Japan;cKazusa DNA Research Institute, Kisarazu, Chiba, Japan;dFaculty of Agriculture, Tokyo University of Agricultural Technology, Tokyo, Japan |
| Abstract: | The rhcJ and ttsI mutants of Bradyrhizobium japonicum USDA122 for the type III protein secretion system (T3SS) failed to secrete typical effector proteins and gained the ability to nodulate Rj2 soybean plants (Hardee), which are symbiotically incompatible with wild-type USDA122. This suggests that effectors secreted via the T3SS trigger incompatibility between these two partners. |
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