Horizontal Transfer of Nodulation Genes in Soils and Microcosms from Bradyrhizobium japonicum to B. elkanii
スポンサーリンク
概要
- 論文の詳細を見る
We investigated the horizontal transfer of nodulation (nod) genes to a Bradyrhizobium elkanii strain, lacking common nod genes as a recipient, in soils and microcosms using selection systems of antibiotic resistance and legume nodulation. We observed the horizontal transfer of nod genes at 4★ in Nakazawa soil where peculiar strains (HRS strains) of B. japonicum harboring high copy numbers of insertion sequences dominated. In microcosms containing HRS strains as donors, we detected a similar horizontal transfer from B. japonicum HRS strain NK5 to the B. elkanii recipient more efficiently at 4★, which was verified by examining hybridization, nodulation and Nod factor production. These traits were, however, gradually lost during successive cultures. Plasmid analysis indicated that this event was not due to the simple transfer of plasmid carrying common nod genes. These results suggest the potential for horizontal transfer of nod genes among bradyrhizobia and other bacterial populations in soil environments.
- 日本微生物生態学会の論文
著者
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MINAMISAWA KIWAMU
Graduate School of Life Sciences, Tohoku University
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MITSUI Hisayuki
Graduate School of Life Sciences, Tohoku University
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ITAKURA MANABU
Graduate School of Life Sciences, Tohoku University
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Isawa T
Graduate School Of Life Sciences Tohoku University:school Of Agriculture Ibaraki University
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Itakura Manabu
Graduate School Of Life Sciences Tohoku University
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Hisamatsu M
Department Of Agricultural Chemistry Faculty Of Bioresources Mie University
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Hisamatsu M
Graduate School Of Life Sciences Tohoku University
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Mitsui Hisayuki
Graduate School Of Life Sciences Tohoku University
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Isawa Tsuyoshi
Graduate School Of Life Sciences Tohoku University:school Of Agriculture Ibaraki University
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SUZUKI MASAKO
School of Agriculture, Ibaraki University
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ICHIGE KAZUNORI
School of Agriculture, Ibaraki University
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YUHASHI KEN-ICHI
Graduate School of Life Sciences, Tohoku University
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Minamisawa K
Graduate School Of Life Sciences Tohoku University
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Yuhashi Ken-ichi
Graduate School Of Life Sciences Tohoku University:school Of Agriculture Ibaraki University:(present
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Minamisawa Kiwamu
Graduate School Of Life Sciences Tohoku Univ.
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Suzuki Masako
School Of Agriculture Ibaraki University
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Ichige Kazunori
School Of Agriculture Ibaraki University
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Mitsui Hisayuki
Graduate School Of Life Science Tohoku University
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Itakura Manabu
Graduate School Of Life Science Tohoku University
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Minamisawa Kiwamu
Graduate School of Life Science, Tohoku University
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